WO2021145000A1 - Method for manufacturing liquid cooling jacket - Google Patents
Method for manufacturing liquid cooling jacket Download PDFInfo
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- WO2021145000A1 WO2021145000A1 PCT/JP2020/010899 JP2020010899W WO2021145000A1 WO 2021145000 A1 WO2021145000 A1 WO 2021145000A1 JP 2020010899 W JP2020010899 W JP 2020010899W WO 2021145000 A1 WO2021145000 A1 WO 2021145000A1
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- WIPO (PCT)
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- sealing body
- stirring pin
- jacket
- aluminum alloy
- peripheral wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
Definitions
- the present invention relates to a method for manufacturing a liquid-cooled jacket.
- Patent Document 1 discloses a method for manufacturing a liquid-cooled jacket.
- FIG. 12 is a cross-sectional view showing a conventional method for manufacturing a liquid-cooled jacket.
- the butt portion J10 formed by abutting the step side surface 101c provided on the step portion of the aluminum alloy jacket body 101 and the side surface 102c of the aluminum alloy sealing body 102. This is to perform friction stir welding.
- the stirring pin F52 of the rotating tool F50 is inserted into the butt portion J10 to perform friction stir welding.
- the rotation center axis C of the rotation tool F is overlapped with the butt portion J10 and relatively moved.
- the jacket body 101 tends to have a complicated shape.
- a jacket body 101 formed of a cast material of 4000 series aluminum alloy and a relatively simple shape such as a sealing body 102 is a wrought material of 1000 series aluminum alloy. In some cases, it is formed by.
- a liquid-cooled jacket may be manufactured by joining members of different grades of aluminum alloy.
- the jacket body 101 generally has a higher hardness than the sealing body 102. Therefore, when friction stir welding is performed as shown in FIG. 12, the stirring pin F52 becomes the sealing body 102.
- the material resistance received from the jacket body 101 side is larger than the material resistance received from the side. Therefore, it becomes difficult to stir different grades in a well-balanced manner by the stirring pin of the rotary tool F50, and there is a problem that cavity defects occur in the plasticized region after joining and the joining strength decreases.
- the stirring pin F52 when the stirring pin F52 is inserted into the butt portion J10, the stirring pin F52 is pushed in in the vertical direction until it reaches a predetermined depth, so that the frictional heat at the start position of frictional stirring becomes excessive. As a result, at the start position, the metal on the jacket body 101 side is likely to be mixed into the sealing body 102, which causes a problem of contributing to poor joining.
- the stirring pin F52 when the stirring pin F52 is separated from the butt portion J10, the stirring pin F52 is moved in the vertical direction, so that the frictional heat at the end position of frictional stirring becomes excessive. As a result, at the end position, the metal on the jacket body 101 side is likely to be mixed into the sealing body 102 side, which causes a problem of contributing to poor joining.
- the present invention uses a rotating tool provided with a stirring pin to form a bottom, a jacket body having a peripheral wall portion rising from the peripheral edge of the bottom, and a sealing body for sealing the opening of the jacket body.
- a method for manufacturing a liquid-cooled jacket to be joined wherein the jacket body is formed of a first aluminum alloy, and the sealing body is a clad formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a material having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the sealing body, and the plan view area of the sealed body is increased from the lower side to the upper side.
- the rotating tool is rotated around the end face of the peripheral wall portion along a preset movement route to stir the friction.
- the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to ⁇
- the rotation center of the outer peripheral surface of the stirring pin is set to ⁇ .
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side.
- the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described.
- the rotating tool While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining.
- the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed.
- the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool to a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point on the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route.
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side.
- the main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining.
- ⁇ the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body
- the inclination angle ⁇ of the outer peripheral surface of the stirring pin with respect to the rotation center axis ⁇
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side.
- the main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining.
- ⁇ the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body
- ⁇ ⁇
- the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed.
- the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool to a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point on the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route. Further, the joining strength can be increased by inserting the tip of the stirring pin of the rotating tool deeper than the height of the bottom surface of the step.
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side.
- the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described.
- the rotating tool While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining.
- the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to ⁇ , and the inclination of the outer peripheral surface of the stirring pin with respect to the rotation center axis.
- the angle is ⁇
- the end position is set outside the set movement route, and after friction-stirring joining with respect to the first butt portion, the rotation tool is used.
- the stirring pin is gradually pulled out from the end surface of the peripheral wall portion while being moved to the end position, and the rotating tool is separated from the peripheral wall portion at the end position.
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side.
- the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described.
- the rotating tool While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining.
- the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to ⁇ , and the inclination of the outer peripheral surface of the stirring pin with respect to the rotation center axis.
- the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed.
- the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pulling out the stirring pin while moving the rotation tool from a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pulling out the stirring pin while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point of the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route.
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side.
- the end position is set outside the set movement route, and after friction stirring joining with respect to the first butt portion, the stirring pin is moved to the peripheral wall portion while moving the rotation tool to the end position. It is characterized in that the rotating tool is gradually pulled out from the end surface of the aluminum alloy and the rotating tool is detached from the peripheral wall portion at the end position.
- a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side.
- the first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface.
- a stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side.
- an end position is set on the set movement route, and after friction stirring joining with respect to the first butt portion, the stirring pin is moved to the end position while moving the rotation tool. Is gradually pulled out from the peripheral wall portion, and the rotating tool is separated from the sealing body at the end position.
- the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed.
- the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pulling out the stirring pin while moving the rotation tool from a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pulling out the stirring pin while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point of the set movement route. Further, the joining strength can be increased by inserting the tip of the stirring pin of the rotating tool deeper than the height of the bottom surface of the step.
- the plate thickness of the sealing body is larger than the height dimension of the step side surface.
- the heat exchange efficiency with the heating element arranged in the liquid-cooled jacket can be improved.
- friction stir welding can be efficiently performed over the entire height direction of the side surface of the step.
- the first aluminum alloy is formed of a cast material and the second aluminum alloy is formed of a wrought material.
- the strength of the jacket body can be increased and the thermal conductivity of the sealed body can be increased.
- a left-handed spiral groove is engraved on the outer peripheral surface of the rotation tool from the proximal end side toward the distal end side
- the rotary tool is rotated clockwise and the peripheral surface of the rotary tool is from the proximal end side to the distal end side.
- a clockwise spiral groove is carved toward, it is preferable to rotate the rotation tool counterclockwise.
- the plastic fluid material can be guided to the tip side of the stirring pin, so that the generation of burrs can be suppressed.
- the rotation direction of the rotation tool and the rotation direction of the rotation tool so that the jacket body side is the flow side and the sealing body side is the shear side in the plasticized region formed in the movement locus of the rotation tool. It is preferable to set the traveling direction.
- friction stir welding of the first butt portion is promoted, and more suitable joining can be performed.
- a stepped portion having a stepped bottom surface and a stepped side surface that rises diagonally from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the main joining is performed.
- the method for manufacturing a liquid-cooled jacket according to the first embodiment of the present invention is to manufacture a liquid-cooled jacket 1 by friction-stir welding the jacket body 2 and the sealing body 3.
- the liquid-cooled jacket 1 is a member in which a heating element (not shown) is installed on the sealing body 3 and a fluid is allowed to flow inside to exchange heat with the heating element.
- the "front surface” in the following description means the surface opposite to the "back surface”.
- the method for manufacturing the liquid-cooled jacket according to the present embodiment includes a preparation step, a mounting step, and a main joining step. Hereinafter, each step will be described in order.
- the preparation step is a step of preparing the jacket body 2 and the sealing body 3.
- the jacket body 2 is mainly composed of a bottom portion 10 and a peripheral wall portion 11.
- the jacket body 2 is formed mainly containing an aluminum alloy.
- an aluminum alloy casting material such as JISH5302 ADC12 (Al—Si—Cu system) is used.
- the bottom portion 10 is a plate-shaped member having a rectangular shape in a plan view.
- the peripheral wall portion 11 is a wall portion that rises in a rectangular frame shape from the peripheral edge portion of the bottom portion 10.
- a step portion 12 is formed on the inner peripheral edge of the peripheral wall portion 11.
- the step portion 12 is composed of a step bottom surface 12a and a step side surface 12b rising from the step bottom surface 12a.
- the step side surface 12b rises vertically from the step bottom surface 12a toward the opening.
- a recess 13 is formed in the bottom portion 10 and the peripheral wall portion 11.
- a convex portion 20 along the step side surface 12b is formed over the entire inner peripheral edge.
- the cross-sectional shape of the convex portion 20 is not particularly limited, but is rectangular in the present embodiment. It is preferable that the size and position of the convex portion 20 are such that a metal shortage does not occur in the first butt portion J1 after the main joining step.
- the convex portion 20 may be omitted.
- the sealing body 3 is a plate-shaped member that seals the opening of the jacket body 2.
- the sealing body 3 is a clad material, and the lower first base portion 31 is formed of a second aluminum alloy and the upper second base portion 32 is formed of copper or a copper alloy.
- the second aluminum alloy is a material having a lower hardness than the first aluminum alloy.
- the second aluminum alloy is formed of, for example, an aluminum alloy wrought material such as JIS A1050, A1100, A6063.
- the hardness refers to Brinell hardness, which can be measured by a method according to JIS Z 2243.
- the first base portion 31 on at least the lower side of the sealing body 3 is provided with an inclination on the side surface 31c so that the plane viewing area decreases from the lower side to the upper side.
- the inclination angle of the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 with respect to the normal direction of the back surface 3b of the sealing body 3 is defined as ⁇ .
- the side surface 3c of the sealing body 3 (the side surface 31c of the first base portion 31 and the second base).
- the entire side surface 32c) of the portion 32 is provided with an inclination.
- the back surface 3b of the sealing body 3 has a size that covers the step bottom surface 12a with almost no gap when it is placed on the step bottom surface 12a of the jacket body 2 in the subsequent mounting process.
- the plate thickness of the sealing body 3 may be the same as the height dimension of the step side surface 12b, but in the present embodiment, it is larger than the height dimension of the step side surface 12b.
- the mounting step is a step of mounting the sealing body 3 on the jacket body 2.
- the back surface 3b of the sealing body 3 is mounted on the bottom surface 12a of the step.
- the step side surface 12b and the side surface 3c of the sealing body 3 are abutted to form the first abutting portion J1. Since the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 is provided with an inclination, a gap having a V-shaped cross section is formed between the side surface 31c and the stepped side surface 12b. Further, the step bottom surface 12a and the back surface 3b of the sealing body 3 are abutted to form the second butt portion J2.
- the boundary between the lower first base portion 31 and the upper second base portion 32 of the sealing body 3 is higher than the end surface 11a of the peripheral wall portion 11. Become.
- this joining step is a step of friction-stir welding the jacket body 2 and the sealing body 3 using the rotary tool F.
- the rotation tool F includes a base shaft portion F1 and a stirring pin F2.
- the rotary tool F is made of, for example, tool steel.
- the base shaft portion F1 is a portion connected to a rotating shaft of a friction stir device (not shown).
- the base shaft portion F1 has a columnar shape.
- the stirring pin F2 hangs down from the base shaft portion F1 and is coaxial with the base shaft portion F1.
- the stirring pin F2 is tapered as it is separated from the base shaft portion F1.
- a flat flat surface F3 is formed at the tip of the stirring pin F2.
- the flat surface F3 is perpendicular to the rotation center axis C.
- the outer surface of the stirring pin F2 is composed of a tapered outer peripheral surface and a flat surface F3 formed at the tip.
- the inclination angle ⁇ formed by the rotation center axis C and the outer peripheral surface of the stirring pin F2 may be appropriately set in the range of, for example, 5 ° to 30 °.
- a spiral groove is engraved on the outer peripheral surface of the stirring pin F2 over the entire length direction.
- the length dimension of the region where the spiral groove is formed is set to be larger than the height dimension of the step side surface 11b of the peripheral wall portion 11.
- the spiral groove in order to rotate the rotation tool F clockwise, is formed counterclockwise from the proximal end side toward the distal end side.
- the spiral groove is formed counterclockwise when viewed from above when the spiral groove is traced from the proximal end side to the distal end side.
- the spiral groove When rotating the rotation tool F counterclockwise, it is preferable to form the spiral groove clockwise from the base end side to the tip end side.
- the spiral groove in this case is formed clockwise when viewed from above when the spiral groove is traced from the base end side to the tip end side.
- the "set movement route L1" which is the route through which the center of the flat surface F3 of the rotation tool F passes, is set. As shown in FIG. 4, the set movement route L1 is indicated by a alternate long and short dash line. The set movement route L1 is set on the convex portion 20 in the present embodiment. The set movement route L1 will be described later.
- the three sections of the detachment section are continuously subjected to friction stir welding.
- the intermediate points S1 and S2 are set on the set movement route L1.
- the start position SP1 is set on the end surface 11a of the peripheral wall portion 11 and outside the set movement route L1.
- the start position SP1 is set at a position where the angle formed by the line segment connecting the start position SP1 and the intermediate point S1 and the set movement route L1 is an obtuse angle.
- the stirring pin F2 When the intermediate point S1 is reached, the stirring pin F2 has reached a predetermined depth.
- the “predetermined depth” means the depth at which the stirring pin F2 is inserted in this section from the intermediate point S1 to the intermediate point S2 on the set movement route L1.
- the predetermined depth is set so that the peripheral wall portion 11 of the jacket body 2 and the base shaft portion F1 of the rotation tool F are separated from each other, and only the stirring pin F2 is inserted into the peripheral wall portion 11.
- the outer peripheral surface of the stirring pin F2 and the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 are set so as to be in a slightly contacted state.
- a predetermined depth is set so that the flat surface F3 of the rotation tool F is at a position higher than the step bottom surface 12a.
- the rotary tool F that has reached the intermediate point S1 shifts to the friction stir welding in this section while maintaining a predetermined depth.
- the contact allowance (offset amount) N between the outer peripheral surface of the stirring pin F2 and the side surface 31c of the first substrate portion 31 is set, for example, between 0 ⁇ N ⁇ 1.0 mm, preferably 0 ⁇ N ⁇ 0.85 mm. It is set between 0 ⁇ N ⁇ 0.65 mm, more preferably 0 ⁇ N ⁇ 0.65 mm.
- the set movement route L1 includes the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 and the outer peripheral surface of the stirring pin F2 when the stirring pin F2 is pushed in in the circumferential direction of the first butt portion J1. Are set as appropriate so that they are slightly in contact with each other while keeping them parallel to each other. In the present embodiment, the set movement route L1 is set on the surface (upper surface) of the convex portion 20.
- the rotation tool F is made to go around along the set movement route L1, and after the stirring pin F2 reaches the intermediate point S2, the rotation tool F shifts to the departure section as it is.
- the stirring pin F2 is gradually pulled out from the intermediate point S2 toward the end position EP1, and the stirring pin F2 is detached from the jacket body 2 at the end position EP1. That is, as shown in FIG. 8, the rotation tool F is gradually pulled out while being moved to the end position EP1 without staying at one place.
- the end position EP1 is set on the end surface 11a of the peripheral wall portion 11 outside the set movement route L1. Further, in the present embodiment, the end position EP1 is set at a position where the angle formed by the line segment connecting the end position EP1 and the intermediate point S2 and the set movement route L1 is an obtuse angle. A plasticized region W1 is formed in the movement locus of the rotation tool F.
- the first aluminum alloy mainly on the jacket body 2 side of the first butt portion J1 is agitated by the frictional heat between the jacket body 2 and the stirring pin F2. It is plastically fluidized, and the stepped side surface 12b of the jacket body 2 and the side surface 3c of the sealing body 3 (the side surface 31c of the first base portion 31) can be joined at the first butt portion J1. Further, since the outer peripheral surface of the stirring pin F2 is kept slightly in contact with the side surface 3c of the sealing body 3, it is possible to minimize the mixing of the second aluminum alloy from the sealing body 3 into the jacket body 2.
- the first aluminum alloy on the jacket body 2 side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed.
- the second base portion 32 made of copper or copper alloy in the sealing body 3 and the rotating tool F are not brought into contact with each other, copper or copper alloy may be mixed into the jacket body 2 side. do not have.
- the contact allowance between the side surface 3c and the rotation tool F can be reduced.
- the inclination angle of the side surface 3c of the sealing body 3 with respect to the normal direction of the back surface 3b of the sealing body 3 is ⁇
- the inclination angle of the outer peripheral surface of the stirring pin F2 with respect to the rotation center axis C is ⁇ .
- the load acting on the friction stir device can be reduced as compared with the case where the shoulder portion is brought into contact with the jacket body 2.
- the positions of the start position SP1 and the end position EP1 may be appropriately set, but the angle formed by the start position SP1 and the set movement route L1 and the angle formed by the end position EP1 and the set movement route L1 are different.
- the angle By setting the angle to be obtuse, it is possible to smoothly shift to the main section or the departure section without reducing the moving speed of the rotation tool F at the intermediate points S1 and S2.
- the rotation tool F may be moved from the start position SP1 to the set movement route L1 so that the locus of the rotation tool F draws an arc when viewed from above.
- the rotation tool F may be moved from the set movement route L1 to the end position EP1 so that the locus of the rotation tool F draws an arc when viewed from above.
- the sealing body 3 is a clad material in which the lower first base portion 31 is made of a second aluminum alloy and the upper second base portion 32 is made of copper or a copper alloy, the copper or copper alloy is high.
- the liquid-cooled jacket 1 having both thermal conductivity and light weight of an aluminum alloy can be obtained. Further, since the jacket body 2 is made of cast aluminum alloy, the strength of the liquid-cooled jacket 1 can be increased.
- the rotation direction and the traveling direction of the rotation tool F may be appropriately set, but of the plasticized region W formed in the movement locus of the rotation tool F, the sealing body 3 side becomes the shear side.
- the rotation direction and the traveling direction of the rotation tool F were set so that the jacket body 2 side was the flow side.
- the shear side is the side where the relative speed of the outer circumference of the rotating tool F with respect to the jointed portion is the value obtained by adding the magnitude of the moving speed to the magnitude of the tangential velocity on the outer circumference of the rotating tool F. means.
- the flow side (Retreating side) refers to a side in which the relative speed of the rotating tool F with respect to the jointed portion becomes low due to the rotation of the rotating tool F in the direction opposite to the moving direction of the rotating tool F.
- the plate thickness dimension of the sealing body 3 is set to be larger than the height dimension of the step side surface 12b. As a result, the heat exchange efficiency of the heating element arranged in the sealing body 3 can be improved.
- the first butt portion J1 Friction stir welding can be performed efficiently over the entire height direction.
- the rotation speed of the rotation tool F may be constant, but may be variable.
- V1 the rotation speed of the rotation tool F at the start position SP1
- V2 the rotation speed of the rotation tool F in this section
- V1> V2 may be satisfied.
- the rotation speed V2 is a preset constant rotation speed in the set movement route L1. That is, at the start position SP1, the rotation speed may be set high, and the rotation speed may be gradually reduced in the closet section to shift to the main section.
- the rotation speed of the rotation tool F in this section is V2 and the rotation speed of the rotation tool F when detached at the end position EP1 is V3, V3> V2 may be satisfied. That is, after shifting to the detachment section, the rotation tool F may be detached from the peripheral wall portion 11 while gradually increasing the rotation speed toward the end position EP1.
- the small pressing force in the indentation section or the detachment section can be supplemented by the rotation speed, so that friction stir welding can be performed. It can be preferably performed.
- the "predetermined depth" of the rotation tool F in this section of the main joining process is deeper than that in the first embodiment.
- the parts different from the first embodiment will be mainly described.
- a predetermined depth is set so that the flat surface F3 of the stirring pin F2 is deeper than the height of the step bottom surface 12a.
- the present embodiment is different from the first embodiment in that the positions of the start position SP1 and the end position EP1 in the main joining process are both set on the set movement route L1.
- the parts different from the first embodiment will be mainly described.
- a preparation step, a mounting step, and a main joining step are performed.
- the preparation step and the placement step are the same as those in the first embodiment.
- the start position SP2 is set on the set movement route L1.
- the contact allowance N between the outer peripheral surface of the stirring pin F2 and the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 when the intermediate point S1 is reached, and the predetermined depth are the first implementation. Similar to form.
- the liquid-cooled jacket manufacturing method according to the present embodiment described above can also achieve substantially the same effect as that of the first embodiment.
- the rotation tool F is moved on the set movement route L1 and the stirring pin F2 is gradually pushed in until the depth reaches a predetermined depth, so that the stirring pin F2 is gradually pushed on the set movement route L1. It is possible to prevent the rotation tool F from stopping at one point and excessive frictional heat.
- the rotation tool F is moved on the set movement route L1 and the stirring pin F2 is gradually pulled out to rotate at one point on the set movement route L1. It is possible to prevent the tool F from stopping and the frictional heat from becoming excessive. As a result, it is possible to prevent the second aluminum alloy of the sealing body 3 from being mixed into the jacket body 2 side in the set movement route L1.
- a predetermined depth may be set so that the flat surface F3 of the stirring pin F2 does not reach the step bottom surface 12a as in the first embodiment.
- the flat surface F3 of the stirring pin F2 may be set to be located below the step bottom surface 12a as in the second embodiment.
- the step side surface 12b may be inclined so as to spread outward toward the opening.
- friction stir welding is performed while filling the gap between the inclined step side surface 12b and the side surface 3c of the sealing body 3 with a plastic fluid material.
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Abstract
The present invention addresses the problem of providing a method for manufacturing a liquid cooling jacket wherein aluminum alloys of different material types can be properly bonded. The present invention includes a main joining step in which friction stir welding is conducted on a first butt joint part (J1) in a state where a stirring pin (F2) of a rotating tool (F) is brought into contact with a jacket main body (2) and also is brought slightly into contact with a side surface (31c) of a sealing body (3). In the main joining step: the friction stir welding is performed in a state where θ=α, where θ is the angle of inclination of the side surface (31c) relative to a direction normal to a reverse surface (3b) of the sealing body (3), and α is the angle of inclination relative to the rotational center axis (C) of the outer peripheral surface of the stirring pin (F2); and the stirring pin (F2) is inserted from a starting position (SP1) and is gradually pushed inward until a prescribed depth is reached while being caused to move along an advancement direction.
Description
本発明は、液冷ジャケットの製造方法に関する。
The present invention relates to a method for manufacturing a liquid-cooled jacket.
例えば、特許文献1には、液冷ジャケットの製造方法が開示されている。図12は、従来の液冷ジャケットの製造方法を示す断面図である。従来の液冷ジャケットの製造方法では、アルミニウム合金製のジャケット本体101の段差部に設けられた段差側面101cと、アルミニウム合金製の封止体102の側面102cとを突き合わせて形成された突合せ部J10に対して摩擦攪拌接合を行うというものである。また、従来の液冷ジャケットの製造方法では、回転ツールF50の攪拌ピンF52のみを突合せ部J10に挿入して摩擦攪拌接合を行っている。また、従来の液冷ジャケットの製造方法では、回転ツールFの回転中心軸線Cを突合せ部J10に重ねて相対移動させるというものである。
For example, Patent Document 1 discloses a method for manufacturing a liquid-cooled jacket. FIG. 12 is a cross-sectional view showing a conventional method for manufacturing a liquid-cooled jacket. In the conventional method for manufacturing a liquid-cooled jacket, the butt portion J10 formed by abutting the step side surface 101c provided on the step portion of the aluminum alloy jacket body 101 and the side surface 102c of the aluminum alloy sealing body 102. This is to perform friction stir welding. Further, in the conventional method for manufacturing a liquid-cooled jacket, only the stirring pin F52 of the rotating tool F50 is inserted into the butt portion J10 to perform friction stir welding. Further, in the conventional method for manufacturing a liquid-cooled jacket, the rotation center axis C of the rotation tool F is overlapped with the butt portion J10 and relatively moved.
ここで、ジャケット本体101は複雑な形状となりやすく、例えば、4000系アルミニウム合金の鋳造材で形成し、封止体102のように比較的単純な形状のものは、1000系アルミニウム合金の展伸材で形成するというような場合がある。このように、アルミニウム合金の材種の異なる部材同士を接合して、液冷ジャケットを製造する場合がある。このような場合は、ジャケット本体101の方が封止体102よりも硬度が高くなることが一般的であるため、図12のように摩擦攪拌接合を行うと、攪拌ピンF52が封止体102側から受ける材料抵抗に比べて、ジャケット本体101側から受ける材料抵抗が大きくなる。そのため、回転ツールF50の攪拌ピンによって異なる材種をバランスよく攪拌することが困難となり、接合後の塑性化領域に空洞欠陥が発生し接合強度が低下するという問題がある。
Here, the jacket body 101 tends to have a complicated shape. For example, a jacket body 101 formed of a cast material of 4000 series aluminum alloy and a relatively simple shape such as a sealing body 102 is a wrought material of 1000 series aluminum alloy. In some cases, it is formed by. In this way, a liquid-cooled jacket may be manufactured by joining members of different grades of aluminum alloy. In such a case, the jacket body 101 generally has a higher hardness than the sealing body 102. Therefore, when friction stir welding is performed as shown in FIG. 12, the stirring pin F52 becomes the sealing body 102. The material resistance received from the jacket body 101 side is larger than the material resistance received from the side. Therefore, it becomes difficult to stir different grades in a well-balanced manner by the stirring pin of the rotary tool F50, and there is a problem that cavity defects occur in the plasticized region after joining and the joining strength decreases.
また、攪拌ピンF52を突合せ部J10に挿入する際、所定の深さとなるまで鉛直方向に攪拌ピンF52を押入するため、摩擦攪拌の開始位置における摩擦熱が過大となる。これにより、当該開始位置において、ジャケット本体101側の金属が封止体102に混入しやすくなり、接合不良の一因となるという問題がある。
Further, when the stirring pin F52 is inserted into the butt portion J10, the stirring pin F52 is pushed in in the vertical direction until it reaches a predetermined depth, so that the frictional heat at the start position of frictional stirring becomes excessive. As a result, at the start position, the metal on the jacket body 101 side is likely to be mixed into the sealing body 102, which causes a problem of contributing to poor joining.
また、攪拌ピンF52を突合せ部J10から離脱させる際、鉛直方向に攪拌ピンF52を移動させるため、摩擦攪拌の終了位置における摩擦熱が過大となる。これにより、当該終了位置において、ジャケット本体101側の金属が封止体102側に混入しやすくなり、接合不良の一因となるという問題がある。
Further, when the stirring pin F52 is separated from the butt portion J10, the stirring pin F52 is moved in the vertical direction, so that the frictional heat at the end position of frictional stirring becomes excessive. As a result, at the end position, the metal on the jacket body 101 side is likely to be mixed into the sealing body 102 side, which causes a problem of contributing to poor joining.
このような観点から、本発明は、材種の異なるアルミニウム合金を好適に接合することができる液冷ジャケットの製造方法を提供することを課題とする。
From this point of view, it is an object of the present invention to provide a method for manufacturing a liquid-cooled jacket capable of suitably joining aluminum alloys of different grades.
このような観点から本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンの外周面は先細りとなるように傾斜しており、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、回転する前記攪拌ピンのみを前記設定移動ルートよりもさらに外側に設定した開始位置に挿入した後、前記回転ツールを前記設定移動ルートまで移動させつつ所定の深さとなるまで前記攪拌ピンを徐々に押入することを特徴とする。
From this point of view, the present invention uses a rotating tool provided with a stirring pin to form a bottom, a jacket body having a peripheral wall portion rising from the peripheral edge of the bottom, and a sealing body for sealing the opening of the jacket body. A method for manufacturing a liquid-cooled jacket to be joined, wherein the jacket body is formed of a first aluminum alloy, and the sealing body is a clad formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a material having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the sealing body, and the plan view area of the sealed body is increased from the lower side to the upper side. A preparatory step in which at least the lower side surface of the second aluminum alloy is inclined so as to be reduced, and the sealing body is placed on the jacket body, and the stepped side surface and the side surface of the sealing body are abutted against each other. A mounting step of forming a first butt portion having a character gap and superimposing the bottom surface of the step and the back surface of the sealing body to form a second butt portion, and the stirring pin of the rotating tool that rotates. In a state where only the alloy is in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end face of the peripheral wall portion along a preset movement route to stir the friction. In the main joining step, the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to θ, and the rotation center of the outer peripheral surface of the stirring pin is set to θ. Assuming that the inclination angle with respect to the axis is α, frictional stirring joining is performed with θ = α, and only the rotating stirring pin is inserted at a start position set further outside the set movement route, and then the rotation is performed. It is characterized in that the stirring pin is gradually pushed in until the tool reaches a predetermined depth while moving the tool to the set movement route.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンの外周面は先細りとなるように傾斜しており、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルート上に設定した開始位置から前記攪拌ピンを挿入し、進行方向に移動させつつ所定の深さとなるまで徐々に前記攪拌ピンを押入することを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side. In the preparatory step of providing at least an inclination on the lower side surface of the second aluminum alloy, the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described. While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining. Including the main joining step, in the main joining step, the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to θ, and the inclination of the outer peripheral surface of the stirring pin with respect to the rotation center axis. Assuming that the angle is α, frictional stirring and joining is performed with θ = α, and the stirring pin is inserted from the start position set on the set movement route until the depth reaches a predetermined depth while moving in the traveling direction. The stirring pin is gradually pushed in.
かかる製造方法によれば、ジャケット本体と攪拌ピンとの摩擦熱によって第一突合せ部の主としてジャケット本体側の第一アルミニウム合金が攪拌されて塑性流動化され、第一突合せ部においてジャケット本体の段差側面と封止体の側面とを接合することができる。また、攪拌ピンの外周面を封止体の側面にわずかに接触させるに留めるため、封止体からジャケット本体への第二アルミニウム合金の混入を極力少なくすることができる。これにより、第一突合せ部においては主としてジャケット本体側の第一アルミニウム合金が摩擦攪拌されるため、接合強度の低下を抑制することができる。また、封止体の側面に傾斜を設けることで、当該側面と回転ツールとの接触代を小さくすることができる。また、回転ツールを設定移動ルートと重複する位置まで移動させながら所定の深さとなるまで攪拌ピンを徐々に押入することにより、設定移動ルート上で摩擦熱が過大になるのを防ぐことができる。また、回転ツールを設定移動ルート上で移動させつつ所定の深さとなるまで攪拌ピンを徐々に押入することにより、設定移動ルート上の一点で摩擦熱が過大になるのを防ぐことができる。これにより、設定移動ルート上において、封止体の第二アルミニウム合金がジャケット本体側に混入するのを防ぐことができる。
According to such a manufacturing method, the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed. Further, by providing the side surface of the sealing body with an inclination, the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool to a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point on the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、回転する前記攪拌ピンのみを前記設定移動ルートよりも外側に設定した開始位置に挿入した後、前記回転ツールを前記設定移動ルートまで移動させつつ所定の深さとなるまで前記攪拌ピンを徐々に押入することを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side. A preparatory step of providing an inclination at least on the lower side surface of the second aluminum alloy so as to reduce the plan view area, and the step side surface and the side surface of the encapsulant body on which the encapsulant is placed on the jacket body. To form a first butt portion having a V-shaped gap, and to form a second butt portion by superimposing the bottom surface of the step and the back surface of the sealing body, and the rotating tool that rotates. Only the stirring pin of the above is brought into contact with the jacket body, the tip of the stirring pin of the rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted into the sealing body. The main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining. Assuming that the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, friction is performed with θ = α. After performing stirring joining and inserting only the rotating stirring pin into the set start position outside the set movement route, the rotation tool is moved to the set movement route and the stirring is performed until a predetermined depth is reached. It is characterized by gradually pushing in the pin.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルート上に設定した開始位置から前記攪拌ピンを挿入し、進行方向に移動させつつ所定の深さとなるまで徐々に前記攪拌ピンを押入することを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side. A preparatory step of providing an inclination at least on the lower side surface of the second aluminum alloy so as to reduce the plan view area, and the step side surface and the side surface of the encapsulant body on which the encapsulant is placed on the jacket body. To form a first butt portion having a V-shaped gap, and to form a second butt portion by superimposing the bottom surface of the step and the back surface of the sealing body, and the rotating tool that rotates. Only the stirring pin of the above is brought into contact with the jacket body, the tip of the stirring pin of the rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted into the sealing body. The main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining. Assuming that the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, friction is performed with θ = α. It is characterized in that the stirring pin is inserted from a set start position on the set movement route, and the stirring pin is gradually pushed in until it reaches a predetermined depth while moving in the traveling direction.
かかる製造方法によれば、ジャケット本体と攪拌ピンとの摩擦熱によって第一突合せ部の主としてジャケット本体側の第一アルミニウム合金が攪拌されて塑性流動化され、第一突合せ部においてジャケット本体の段差側面と封止体の側面とを接合することができる。また、攪拌ピンの外周面を封止体の側面にわずかに接触させるに留めるため、封止体からジャケット本体への第二アルミニウム合金の混入を極力少なくすることができる。これにより、第一突合せ部においては主としてジャケット本体側の第一アルミニウム合金が摩擦攪拌されるため、接合強度の低下を抑制することができる。また、封止体の側面に傾斜を設けることで、当該側面と回転ツールとの接触代を小さくすることができる。また、回転ツールを設定移動ルートと重複する位置まで移動させながら所定の深さとなるまで攪拌ピンを徐々に押入することにより、設定移動ルート上で摩擦熱が過大になるのを防ぐことができる。また、回転ツールを設定移動ルート上で移動させつつ所定の深さとなるまで攪拌ピンを徐々に押入することにより、設定移動ルート上の一点で摩擦熱が過大になるのを防ぐことができる。これにより、設定移動ルート上において、封止体の第二アルミニウム合金がジャケット本体側に混入するのを防ぐことができる。また、回転ツールの攪拌ピンの先端を段差底面の高さよりも深く挿入することで、接合強度を高めることができる。
According to such a manufacturing method, the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed. Further, by providing the side surface of the sealing body with an inclination, the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool to a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pushing the stirring pin until it reaches a predetermined depth while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point on the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route. Further, the joining strength can be increased by inserting the tip of the stirring pin of the rotating tool deeper than the height of the bottom surface of the step.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンの外周面は先細りとなるように傾斜しており、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルートよりも外側に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部の端面から徐々に引き抜いて前記終了位置で前記周壁部から前記回転ツールを離脱させることを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side. In the preparatory step of providing at least an inclination on the lower side surface of the second aluminum alloy, the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described. While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining. Including the main joining step, in the main joining step, the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to θ, and the inclination of the outer peripheral surface of the stirring pin with respect to the rotation center axis. Assuming that the angle is α, friction-stirring joining is performed with θ = α, the end position is set outside the set movement route, and after friction-stirring joining with respect to the first butt portion, the rotation tool is used. The stirring pin is gradually pulled out from the end surface of the peripheral wall portion while being moved to the end position, and the rotating tool is separated from the peripheral wall portion at the end position.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンの外周面は先細りとなるように傾斜しており、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記本接合工程において、前記設定移動ルート上に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部から徐々に引き抜いて前記終了位置で前記封止体から前記回転ツールを離脱させることを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the outer peripheral surface of the stirring pin is inclined so as to be tapered. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed, and the plan view area of the sealed body is reduced from the lower side to the upper side. In the preparatory step of providing at least an inclination on the lower side surface of the second aluminum alloy, the encapsulant is placed on the jacket body, and the step side surface and the side surface of the encapsulant body are abutted against each other to form a V-shaped gap. Only the mounting step of forming the first butt portion having the above stepped surface and the back surface of the sealing body to form the second butt portion and the stirring pin of the rotating tool are described. While in contact with the jacket body and slightly in contact with the side surface of the sealing body, the rotating tool is rotated around the end surface of the peripheral wall portion along a preset movement route to perform frictional stirring joining. Including the main joining step, in the main joining step, the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is set to θ, and the inclination of the outer peripheral surface of the stirring pin with respect to the rotation center axis. Assuming that the angle is α, friction-stirring joining is performed with θ = α, and in the main joining step, an end position is set on the set movement route, and after friction-stirring joining with respect to the first butt portion, While moving the rotating tool to the end position, the stirring pin is gradually pulled out from the peripheral wall portion to separate the rotating tool from the sealing body at the end position.
かかる製造方法によれば、ジャケット本体と攪拌ピンとの摩擦熱によって第一突合せ部の主としてジャケット本体側の第一アルミニウム合金が攪拌されて塑性流動化され、第一突合せ部においてジャケット本体の段差側面と封止体の側面とを接合することができる。また、攪拌ピンの外周面を封止体の側面にわずかに接触させるに留めるため、封止体からジャケット本体への第二アルミニウム合金の混入を極力少なくすることができる。これにより、第一突合せ部においては主としてジャケット本体側の第一アルミニウム合金が摩擦攪拌されるため、接合強度の低下を抑制することができる。また、封止体の側面に傾斜を設けることで、当該側面と回転ツールとの接触代を小さくすることができる。また、回転ツールを設定移動ルートと重複する位置から移動させながら攪拌ピンを徐々に引き抜くことにより、設定移動ルート上で摩擦熱が過大になるのを防ぐことができる。また、回転ツールを設定移動ルート上で移動させつつ攪拌ピンを徐々に引き抜くことにより、設定移動ルートの一点で摩擦熱が過大になるのを防ぐことができる。これにより、設定移動ルート上において、封止体の第二アルミニウム合金がジャケット本体側に混入するのを防ぐことができる。
According to such a manufacturing method, the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed. Further, by providing the side surface of the sealing body with an inclination, the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pulling out the stirring pin while moving the rotation tool from a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pulling out the stirring pin while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point of the set movement route. As a result, it is possible to prevent the second aluminum alloy of the sealant from being mixed into the jacket body side on the set movement route.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルートよりも外側に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部の端面から徐々に引き抜いて前記終了位置で前記周壁部から前記回転ツールを離脱させることを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side. A preparatory step of providing an inclination at least on the lower side surface of the second aluminum alloy so as to reduce the plan view area, and the step side surface and the side surface of the encapsulant body on which the encapsulant is placed on the jacket body. To form a first butt portion having a V-shaped gap, and to form a second butt portion by superimposing the bottom surface of the step and the back surface of the sealing body, and the rotating tool that rotates. Only the stirring pin of the above is brought into contact with the jacket body, the tip of the stirring pin of the rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted into the sealing body. The main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining. Assuming that the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, friction is performed with θ = α. While performing stirring joining, the end position is set outside the set movement route, and after friction stirring joining with respect to the first butt portion, the stirring pin is moved to the peripheral wall portion while moving the rotation tool to the end position. It is characterized in that the rotating tool is gradually pulled out from the end surface of the aluminum alloy and the rotating tool is detached from the peripheral wall portion at the end position.
また、本発明は、底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記本接合工程において、前記設定移動ルート上に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部から徐々に引き抜いて前記終了位置で前記封止体から前記回転ツールを離脱させることを特徴とする。
Further, in the present invention, a liquid for joining a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body using a rotating tool provided with a stirring pin. A method for manufacturing a cold jacket, the jacket body is made of a first aluminum alloy, and the sealant is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side. The first aluminum alloy is a grade having a higher hardness than the second aluminum alloy, and the stirring pin has an outer peripheral surface that is inclined so as to be tapered and has a flat tip surface. A stepped portion having a stepped bottom surface and a stepped side surface rising from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side to the upper side. A preparatory step of providing an inclination at least on the lower side surface of the second aluminum alloy so as to reduce the plan view area, and the step side surface and the side surface of the encapsulant body on which the encapsulant is placed on the jacket body. To form a first butt portion having a V-shaped gap, and to form a second butt portion by superimposing the bottom surface of the step and the back surface of the sealing body, and the rotating tool that rotates. Only the stirring pin of the above is brought into contact with the jacket body, the tip of the stirring pin of the rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted into the sealing body. The main joining step includes a main joining step of rotating the rotary tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface to perform frictional stirring joining. Assuming that the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, friction is performed with θ = α. In addition to performing stirring joining, in the main joining step, an end position is set on the set movement route, and after friction stirring joining with respect to the first butt portion, the stirring pin is moved to the end position while moving the rotation tool. Is gradually pulled out from the peripheral wall portion, and the rotating tool is separated from the sealing body at the end position.
かかる製造方法によれば、ジャケット本体と攪拌ピンとの摩擦熱によって第一突合せ部の主としてジャケット本体側の第一アルミニウム合金が攪拌されて塑性流動化され、第一突合せ部においてジャケット本体の段差側面と封止体の側面とを接合することができる。また、攪拌ピンの外周面を封止体の側面にわずかに接触させるに留めるため、封止体からジャケット本体への第二アルミニウム合金の混入を極力少なくすることができる。これにより、第一突合せ部においては主としてジャケット本体側の第一アルミニウム合金が摩擦攪拌されるため、接合強度の低下を抑制することができる。また、封止体の側面に傾斜を設けることで、当該側面と回転ツールとの接触代を小さくすることができる。また、回転ツールを設定移動ルートと重複する位置から移動させながら攪拌ピンを徐々に引き抜くことにより、設定移動ルート上で摩擦熱が過大になるのを防ぐことができる。また、回転ツールを設定移動ルート上で移動させつつ攪拌ピンを徐々に引き抜くことにより、設定移動ルートの一点で摩擦熱が過大になるのを防ぐことができる。また、回転ツールの攪拌ピンの先端を段差底面の高さよりも深く挿入することで、接合強度を高めることができる。
According to such a manufacturing method, the first aluminum alloy mainly on the jacket body side of the first butt portion is agitated and plastically fluidized by the frictional heat between the jacket body and the stirring pin, and the first butt portion is formed with the step side surface of the jacket body. It can be joined to the side surface of the sealant. Further, since the outer peripheral surface of the stirring pin is kept in contact with the side surface of the sealing body slightly, it is possible to minimize the mixing of the second aluminum alloy from the sealing body into the jacket body. As a result, in the first butt portion, the first aluminum alloy on the jacket body side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed. Further, by providing the side surface of the sealing body with an inclination, the contact allowance between the side surface and the rotating tool can be reduced. Further, by gradually pulling out the stirring pin while moving the rotation tool from a position overlapping the set movement route, it is possible to prevent the frictional heat from becoming excessive on the set movement route. Further, by gradually pulling out the stirring pin while moving the rotation tool on the set movement route, it is possible to prevent the frictional heat from becoming excessive at one point of the set movement route. Further, the joining strength can be increased by inserting the tip of the stirring pin of the rotating tool deeper than the height of the bottom surface of the step.
また、前記封止体の板厚を、前記段差側面の高さ寸法よりも大きくすることが好ましい。
Further, it is preferable that the plate thickness of the sealing body is larger than the height dimension of the step side surface.
かかる製造方法によれば、液冷ジャケットに配置される発熱体との熱交換効率を高めることができる。
According to such a manufacturing method, the heat exchange efficiency with the heating element arranged in the liquid-cooled jacket can be improved.
また、前記攪拌ピンの外周面に螺旋溝を設け、当該螺旋溝が形成されている領域の長さ寸法を、前記段差側面の高さ寸法よりも大きくすることが好ましい。
Further, it is preferable to provide a spiral groove on the outer peripheral surface of the stirring pin so that the length dimension of the region where the spiral groove is formed is larger than the height dimension of the step side surface.
かかる製造方法によれば、段差側面の高さ方向の全体に亘って効率よく摩擦攪拌接合を行うことができる。
According to such a manufacturing method, friction stir welding can be efficiently performed over the entire height direction of the side surface of the step.
また、前記第一アルミニウム合金は鋳造材で形成され、第二アルミニウム合金は展伸材で形成されていることが好ましい。
Further, it is preferable that the first aluminum alloy is formed of a cast material and the second aluminum alloy is formed of a wrought material.
かかる製造方法によれば、ジャケット本体の強度を高めることができるとともに、封止体の熱伝導性を高めることができる。
According to such a manufacturing method, the strength of the jacket body can be increased and the thermal conductivity of the sealed body can be increased.
また、前記回転ツールの外周面に基端側から先端側に向かうにつれて左回りの螺旋溝を刻設した場合、前記回転ツールを右回転させ、前記回転ツールの外周面に基端側から先端側に向かうにつれて右回りの螺旋溝を刻設した場合、前記回転ツールを左回転させることが好ましい。
Further, when a left-handed spiral groove is engraved on the outer peripheral surface of the rotation tool from the proximal end side toward the distal end side, the rotary tool is rotated clockwise and the peripheral surface of the rotary tool is from the proximal end side to the distal end side. When a clockwise spiral groove is carved toward, it is preferable to rotate the rotation tool counterclockwise.
かかる製造方法によれば、塑性流動材を攪拌ピンの先端側に導くことができるため、バリの発生を抑制することができる。
According to such a manufacturing method, the plastic fluid material can be guided to the tip side of the stirring pin, so that the generation of burrs can be suppressed.
また、前記本接合工程では、前記回転ツールの移動軌跡に形成される塑性化領域のうち、前記ジャケット本体側がフロー側となり、前記封止体側がシアー側となるように前記回転ツールの回転方向及び進行方向を設定することが好ましい。
Further, in the main joining step, the rotation direction of the rotation tool and the rotation direction of the rotation tool so that the jacket body side is the flow side and the sealing body side is the shear side in the plasticized region formed in the movement locus of the rotation tool. It is preferable to set the traveling direction.
かかる製造方法によれば、第一突合せ部の摩擦攪拌が促進され、より好適に接合することができる。
According to such a manufacturing method, friction stir welding of the first butt portion is promoted, and more suitable joining can be performed.
また、前記準備工程では、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって広がるように斜めに立ち上がる段差側面と、を有する段差部を形成し、前記本接合工程では、前記段差側面と前記封止体の側面との間の隙間を塑性流動材で埋めることが好ましい。
Further, in the preparatory step, a stepped portion having a stepped bottom surface and a stepped side surface that rises diagonally from the stepped bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the main joining is performed. In the step, it is preferable to fill the gap between the step side surface and the side surface of the sealing body with a plastic fluid material.
本発明に係る液冷ジャケットの製造方法によれば、材種の異なるアルミニウム合金を好適に接合することができる。
According to the method for manufacturing a liquid-cooled jacket according to the present invention, aluminum alloys of different grades can be suitably joined.
[第一実施形態]
本発明の第一実施形態に係る液冷ジャケットの製造方法について、図面を参照して詳細に説明する。図1に示すように、本実施形態に係る液冷ジャケットの製造方法は、ジャケット本体2と、封止体3とを摩擦攪拌接合して液冷ジャケット1を製造するものである。液冷ジャケット1は、封止体3の上に発熱体(図示省略)を設置するとともに、内部に流体を流して発熱体と熱交換を行う部材である。なお、以下の説明における「表面」とは、「裏面」の反対側の面という意味である。 [First Embodiment]
The method for manufacturing a liquid-cooled jacket according to the first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the method for manufacturing a liquid-cooled jacket according to the present embodiment is to manufacture a liquid-cooledjacket 1 by friction-stir welding the jacket body 2 and the sealing body 3. The liquid-cooled jacket 1 is a member in which a heating element (not shown) is installed on the sealing body 3 and a fluid is allowed to flow inside to exchange heat with the heating element. The "front surface" in the following description means the surface opposite to the "back surface".
本発明の第一実施形態に係る液冷ジャケットの製造方法について、図面を参照して詳細に説明する。図1に示すように、本実施形態に係る液冷ジャケットの製造方法は、ジャケット本体2と、封止体3とを摩擦攪拌接合して液冷ジャケット1を製造するものである。液冷ジャケット1は、封止体3の上に発熱体(図示省略)を設置するとともに、内部に流体を流して発熱体と熱交換を行う部材である。なお、以下の説明における「表面」とは、「裏面」の反対側の面という意味である。 [First Embodiment]
The method for manufacturing a liquid-cooled jacket according to the first embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the method for manufacturing a liquid-cooled jacket according to the present embodiment is to manufacture a liquid-cooled
本実施形態に係る液冷ジャケットの製造方法は、準備工程と、載置工程と、本接合工程と、を行う。以下、それぞれの工程について順に説明する。
The method for manufacturing the liquid-cooled jacket according to the present embodiment includes a preparation step, a mounting step, and a main joining step. Hereinafter, each step will be described in order.
(準備工程)
準備工程は、ジャケット本体2と封止体3とを準備する工程である。ジャケット本体2は、底部10と、周壁部11とで主に構成されている。ジャケット本体2は、アルミニウム合金を主に含んで形成されている。アルミニウム合金は、例えば、JISH5302 ADC12(Al-Si-Cu系)等のアルミニウム合金鋳造材を用いている。 (Preparation process)
The preparation step is a step of preparing thejacket body 2 and the sealing body 3. The jacket body 2 is mainly composed of a bottom portion 10 and a peripheral wall portion 11. The jacket body 2 is formed mainly containing an aluminum alloy. As the aluminum alloy, for example, an aluminum alloy casting material such as JISH5302 ADC12 (Al—Si—Cu system) is used.
準備工程は、ジャケット本体2と封止体3とを準備する工程である。ジャケット本体2は、底部10と、周壁部11とで主に構成されている。ジャケット本体2は、アルミニウム合金を主に含んで形成されている。アルミニウム合金は、例えば、JISH5302 ADC12(Al-Si-Cu系)等のアルミニウム合金鋳造材を用いている。 (Preparation process)
The preparation step is a step of preparing the
図1に示すように、底部10は、平面視矩形を呈する板状部材である。周壁部11は、底部10の周縁部から矩形枠状に立ち上がる壁部である。周壁部11の内周縁には段差部12が形成されている。段差部12は、段差底面12aと、段差底面12aから立ち上がる段差側面12bとで構成されている。
As shown in FIG. 1, the bottom portion 10 is a plate-shaped member having a rectangular shape in a plan view. The peripheral wall portion 11 is a wall portion that rises in a rectangular frame shape from the peripheral edge portion of the bottom portion 10. A step portion 12 is formed on the inner peripheral edge of the peripheral wall portion 11. The step portion 12 is composed of a step bottom surface 12a and a step side surface 12b rising from the step bottom surface 12a.
図2に示すように、段差側面12bは、段差底面12aから開口部に向かって垂直に立ち上がっている。底部10及び周壁部11で凹部13が形成されている。また、周壁部11の端面11aには、段差側面12bに沿う凸部20が内周縁全体に亘って形成されている。凸部20の断面形状は特に制限されないが、本実施形態では矩形になっている。凸部20の大きさ及び位置は、本接合工程後に第一突合せ部J1に金属不足が発生しないようにすることが好ましい。なお、凸部20は省略してもよい。
As shown in FIG. 2, the step side surface 12b rises vertically from the step bottom surface 12a toward the opening. A recess 13 is formed in the bottom portion 10 and the peripheral wall portion 11. Further, on the end surface 11a of the peripheral wall portion 11, a convex portion 20 along the step side surface 12b is formed over the entire inner peripheral edge. The cross-sectional shape of the convex portion 20 is not particularly limited, but is rectangular in the present embodiment. It is preferable that the size and position of the convex portion 20 are such that a metal shortage does not occur in the first butt portion J1 after the main joining step. The convex portion 20 may be omitted.
封止体3は、ジャケット本体2の開口部を封止する板状部材である。封止体3はクラッド材であり、下側の第一基体部31が第二アルミニウム合金、上側の第二基体部32が銅又は銅合金によって形成されている。第二アルミニウム合金は、第一アルミニウム合金よりも硬度の低い材料である。第二アルミニウム合金は、例えば、JIS A1050,A1100,A6063等のアルミニウム合金展伸材で形成されている。なお、本明細書において硬度はブリネル硬さをいい、JIS Z 2243に準じた方法によって測定することができる。
The sealing body 3 is a plate-shaped member that seals the opening of the jacket body 2. The sealing body 3 is a clad material, and the lower first base portion 31 is formed of a second aluminum alloy and the upper second base portion 32 is formed of copper or a copper alloy. The second aluminum alloy is a material having a lower hardness than the first aluminum alloy. The second aluminum alloy is formed of, for example, an aluminum alloy wrought material such as JIS A1050, A1100, A6063. In this specification, the hardness refers to Brinell hardness, which can be measured by a method according to JIS Z 2243.
封止体3の少なくとも下側の第一基体部31には、下側から上側に向かって平面視面積が縮小するように、側面31cに傾斜が設けられている。以降、封止体3の裏面3bの法線方向に対する、封止体3の下側の第一基体部31の側面31cの傾斜角度をθとする。本実施形態においては、第一基体部31と第二基体部32を圧延接合して封止体3とした後に、封止体3の側面3c(第一基体部31の側面31cおよび第二基体部32の側面32c)全体に傾斜を設けている。
The first base portion 31 on at least the lower side of the sealing body 3 is provided with an inclination on the side surface 31c so that the plane viewing area decreases from the lower side to the upper side. Hereinafter, the inclination angle of the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 with respect to the normal direction of the back surface 3b of the sealing body 3 is defined as θ. In the present embodiment, after the first base portion 31 and the second base portion 32 are rolled and joined to form the sealing body 3, the side surface 3c of the sealing body 3 (the side surface 31c of the first base portion 31 and the second base). The entire side surface 32c) of the portion 32 is provided with an inclination.
封止体3の裏面3bは、この後の載置工程でジャケット本体2の段差底面12aに載置したときに、概ね隙間なく段差底面12aを覆う大きさになっている。封止体3の板厚は、段差側面12bの高さ寸法と同等でもよいが、本実施形態では、段差側面12bの高さ寸法よりも大きくなっている。
The back surface 3b of the sealing body 3 has a size that covers the step bottom surface 12a with almost no gap when it is placed on the step bottom surface 12a of the jacket body 2 in the subsequent mounting process. The plate thickness of the sealing body 3 may be the same as the height dimension of the step side surface 12b, but in the present embodiment, it is larger than the height dimension of the step side surface 12b.
(載置工程)
載置工程は、図2に示すように、ジャケット本体2に封止体3を載置する工程である。載置工程では、段差底面12aに封止体3の裏面3bを載置する。段差側面12bと封止体3の側面3cとが突き合わされて第一突合せ部J1が形成される。封止体3の下側の第一基体部31の側面31cには傾斜が設けられているため、側面31cと段差側面12bとの間には断面V字状の隙間が形成されている。また、段差底面12aと、封止体3の裏面3bとが突き合わされて第二突合せ部J2が形成される。本実施形態では、封止体3を載置すると、封止体3の下側の第一基体部31と上側の第二基体部32の境界が、周壁部11の端面11aよりも高い位置となる。 (Placement process)
As shown in FIG. 2, the mounting step is a step of mounting the sealingbody 3 on the jacket body 2. In the mounting step, the back surface 3b of the sealing body 3 is mounted on the bottom surface 12a of the step. The step side surface 12b and the side surface 3c of the sealing body 3 are abutted to form the first abutting portion J1. Since the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 is provided with an inclination, a gap having a V-shaped cross section is formed between the side surface 31c and the stepped side surface 12b. Further, the step bottom surface 12a and the back surface 3b of the sealing body 3 are abutted to form the second butt portion J2. In the present embodiment, when the sealing body 3 is placed, the boundary between the lower first base portion 31 and the upper second base portion 32 of the sealing body 3 is higher than the end surface 11a of the peripheral wall portion 11. Become.
載置工程は、図2に示すように、ジャケット本体2に封止体3を載置する工程である。載置工程では、段差底面12aに封止体3の裏面3bを載置する。段差側面12bと封止体3の側面3cとが突き合わされて第一突合せ部J1が形成される。封止体3の下側の第一基体部31の側面31cには傾斜が設けられているため、側面31cと段差側面12bとの間には断面V字状の隙間が形成されている。また、段差底面12aと、封止体3の裏面3bとが突き合わされて第二突合せ部J2が形成される。本実施形態では、封止体3を載置すると、封止体3の下側の第一基体部31と上側の第二基体部32の境界が、周壁部11の端面11aよりも高い位置となる。 (Placement process)
As shown in FIG. 2, the mounting step is a step of mounting the sealing
(本接合工程)
本接合工程は、図3~図8に示すように、回転ツールFを用いてジャケット本体2と封止体3とを摩擦攪拌接合する工程である。 (Main joining process)
As shown in FIGS. 3 to 8, this joining step is a step of friction-stir welding thejacket body 2 and the sealing body 3 using the rotary tool F.
本接合工程は、図3~図8に示すように、回転ツールFを用いてジャケット本体2と封止体3とを摩擦攪拌接合する工程である。 (Main joining process)
As shown in FIGS. 3 to 8, this joining step is a step of friction-stir welding the
(回転ツール)
回転ツールFは、図3に示すように、基軸部F1と攪拌ピンF2とを含んで構成されている。回転ツールFは、例えば、工具鋼で形成されている。基軸部F1は、摩擦攪拌装置(図示省略)の回転軸に連結される部位である。基軸部F1は円柱状を呈する。 (Rotation tool)
As shown in FIG. 3, the rotation tool F includes a base shaft portion F1 and a stirring pin F2. The rotary tool F is made of, for example, tool steel. The base shaft portion F1 is a portion connected to a rotating shaft of a friction stir device (not shown). The base shaft portion F1 has a columnar shape.
回転ツールFは、図3に示すように、基軸部F1と攪拌ピンF2とを含んで構成されている。回転ツールFは、例えば、工具鋼で形成されている。基軸部F1は、摩擦攪拌装置(図示省略)の回転軸に連結される部位である。基軸部F1は円柱状を呈する。 (Rotation tool)
As shown in FIG. 3, the rotation tool F includes a base shaft portion F1 and a stirring pin F2. The rotary tool F is made of, for example, tool steel. The base shaft portion F1 is a portion connected to a rotating shaft of a friction stir device (not shown). The base shaft portion F1 has a columnar shape.
攪拌ピンF2は、基軸部F1から垂下しており、基軸部F1と同軸になっている。攪拌ピンF2は基軸部F1から離間するにつれて先細りになっている。攪拌ピンF2の先端には平坦な平坦面F3が形成されている。平坦面F3は、回転中心軸線Cに対して垂直である。以上のように、攪拌ピンF2の外面は、先細りとなる外周面と、先端に形成された平坦面F3とで構成されている。側面視した場合において、回転中心軸線Cと攪拌ピンF2の外周面とのなす傾斜角度αは、例えば5°~30°の範囲で適宜設定すればよい。
The stirring pin F2 hangs down from the base shaft portion F1 and is coaxial with the base shaft portion F1. The stirring pin F2 is tapered as it is separated from the base shaft portion F1. A flat flat surface F3 is formed at the tip of the stirring pin F2. The flat surface F3 is perpendicular to the rotation center axis C. As described above, the outer surface of the stirring pin F2 is composed of a tapered outer peripheral surface and a flat surface F3 formed at the tip. When viewed from the side, the inclination angle α formed by the rotation center axis C and the outer peripheral surface of the stirring pin F2 may be appropriately set in the range of, for example, 5 ° to 30 °.
攪拌ピンF2の外周面には長さ方向の全体に亘って螺旋溝が刻設されている。本実施形態では、螺旋溝が形成されている領域の長さ寸法を、周壁部11の段差側面11bの高さ寸法よりも大きく設定している。
A spiral groove is engraved on the outer peripheral surface of the stirring pin F2 over the entire length direction. In the present embodiment, the length dimension of the region where the spiral groove is formed is set to be larger than the height dimension of the step side surface 11b of the peripheral wall portion 11.
本実施形態では、回転ツールFを右回転させるため、螺旋溝は、基端側から先端側に向かうにつれて左回りに形成されている。言い換えると、螺旋溝は、螺旋溝を基端側から先端側に向けてなぞると上から見て左回りに形成されている。
In the present embodiment, in order to rotate the rotation tool F clockwise, the spiral groove is formed counterclockwise from the proximal end side toward the distal end side. In other words, the spiral groove is formed counterclockwise when viewed from above when the spiral groove is traced from the proximal end side to the distal end side.
なお、回転ツールFを左回転させる場合は、螺旋溝を基端側から先端側に向かうにつれて右回りに形成することが好ましい。言い換えると、この場合の螺旋溝は、螺旋溝を基端側から先端側に向けてなぞると上から見て右回りに形成されている。螺旋溝をこのように設定することで、摩擦攪拌の際に塑性流動化した金属が螺旋溝によって攪拌ピンF2の先端側に導かれる。これにより、被接合金属部材(ジャケット本体2及び封止体3)の外部に溢れ出る金属の量を少なくすることができる。
When rotating the rotation tool F counterclockwise, it is preferable to form the spiral groove clockwise from the base end side to the tip end side. In other words, the spiral groove in this case is formed clockwise when viewed from above when the spiral groove is traced from the base end side to the tip end side. By setting the spiral groove in this way, the metal plastically fluidized during friction stir welding is guided to the tip end side of the stirring pin F2 by the spiral groove. As a result, the amount of metal that overflows to the outside of the metal member to be joined (jacket body 2 and sealing body 3) can be reduced.
(回転ツールの移動)
まず、回転ツールFの平坦面F3の中心が通過するルートである「設定移動ルートL1」を設定する。図4に示すように、設定移動ルートL1は、一点鎖線で示している。設定移動ルートL1は、本実施形態では凸部20の上に設定している。なお、設定移動ルートL1については後記する。 (Move the rotation tool)
First, the "set movement route L1", which is the route through which the center of the flat surface F3 of the rotation tool F passes, is set. As shown in FIG. 4, the set movement route L1 is indicated by a alternate long and short dash line. The set movement route L1 is set on theconvex portion 20 in the present embodiment. The set movement route L1 will be described later.
まず、回転ツールFの平坦面F3の中心が通過するルートである「設定移動ルートL1」を設定する。図4に示すように、設定移動ルートL1は、一点鎖線で示している。設定移動ルートL1は、本実施形態では凸部20の上に設定している。なお、設定移動ルートL1については後記する。 (Move the rotation tool)
First, the "set movement route L1", which is the route through which the center of the flat surface F3 of the rotation tool F passes, is set. As shown in FIG. 4, the set movement route L1 is indicated by a alternate long and short dash line. The set movement route L1 is set on the
図4に示すように、本接合工程では、開始位置SP1から中間点S1までの押入区間と、中間点S1から一周廻って中間点S2までの本区間と、中間点S2から終了位置EP1までの離脱区間の三つの区間を連続して摩擦攪拌接合する。中間点S1,S2は、設定移動ルートL1上に設定されている。開始位置SP1は、周壁部11の端面11a上において、設定移動ルートL1よりも外側に設定されている。本実施形態では、開始位置SP1を、開始位置SP1と中間点S1とを結ぶ線分と設定移動ルートL1とのなす角度が鈍角となる位置に設定する。
As shown in FIG. 4, in the main joining step, the intrusion section from the start position SP1 to the intermediate point S1, the main section from the intermediate point S1 to the intermediate point S2, and the intermediate point S2 to the end position EP1. The three sections of the detachment section are continuously subjected to friction stir welding. The intermediate points S1 and S2 are set on the set movement route L1. The start position SP1 is set on the end surface 11a of the peripheral wall portion 11 and outside the set movement route L1. In the present embodiment, the start position SP1 is set at a position where the angle formed by the line segment connecting the start position SP1 and the intermediate point S1 and the set movement route L1 is an obtuse angle.
本接合工程の押入区間では、図5に示すように、開始位置SP1から中間点S1までの摩擦攪拌を行う。押入区間では、周壁部11の端面11aに対して回転中心軸線Cを垂直にしつつ、右回転させた攪拌ピンF2を開始位置SP1に挿入し、中間点S1まで移動させる。この際、図5に示すように、少なくとも中間点S1に到達するまでに予め設定された「所定の深さ」に達するように攪拌ピンF2を徐々に押し入れていく。つまり、回転ツールFを一ヶ所に留まらせることなく、回転ツールFを設定移動ルートL1に移動させながら徐々に下降させていく。
In the closet section of the main joining process, as shown in FIG. 5, friction stirring is performed from the start position SP1 to the intermediate point S1. In the closet section, the stirring pin F2 rotated clockwise is inserted into the start position SP1 while the rotation center axis C is perpendicular to the end surface 11a of the peripheral wall portion 11, and is moved to the intermediate point S1. At this time, as shown in FIG. 5, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" by at least reaching the intermediate point S1. That is, instead of keeping the rotation tool F in one place, the rotation tool F is gradually lowered while being moved to the set movement route L1.
中間点S1に達した際、攪拌ピンF2は所定の深さに到達している。「所定の深さ」とは、設定移動ルートL1上の中間点S1から中間点S2までの本区間において攪拌ピンF2を差し込む深さをいう。所定の深さは、本実施形態では、図6に示すように、ジャケット本体2の周壁部11と回転ツールFの基軸部F1とは離間させ、攪拌ピンF2のみを周壁部11に挿入し、攪拌ピンF2の外周面と封止体3の下側の第一基体部31の側面31cとがわずかに接触した状態となるように設定する。また、本実施形態では、回転ツールFの平坦面F3が段差底面12aよりも高い位置となるように所定の深さを設定している。
When the intermediate point S1 is reached, the stirring pin F2 has reached a predetermined depth. The “predetermined depth” means the depth at which the stirring pin F2 is inserted in this section from the intermediate point S1 to the intermediate point S2 on the set movement route L1. In the present embodiment, as shown in FIG. 6, the predetermined depth is set so that the peripheral wall portion 11 of the jacket body 2 and the base shaft portion F1 of the rotation tool F are separated from each other, and only the stirring pin F2 is inserted into the peripheral wall portion 11. The outer peripheral surface of the stirring pin F2 and the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 are set so as to be in a slightly contacted state. Further, in the present embodiment, a predetermined depth is set so that the flat surface F3 of the rotation tool F is at a position higher than the step bottom surface 12a.
中間点S1に到達した回転ツールFは、所定の深さを維持したまま、本区間の摩擦攪拌接合に移行する。攪拌ピンF2の外周面と第一基体部31の側面31cとの接触代(オフセット量)Nは、例えば、0<N≦1.0mmの間で設定し、好ましくは0<N≦0.85mmの間で設定し、より好ましくは0<N≦0.65mmの間で設定する。
The rotary tool F that has reached the intermediate point S1 shifts to the friction stir welding in this section while maintaining a predetermined depth. The contact allowance (offset amount) N between the outer peripheral surface of the stirring pin F2 and the side surface 31c of the first substrate portion 31 is set, for example, between 0 <N ≦ 1.0 mm, preferably 0 <N ≦ 0.85 mm. It is set between 0 <N ≦ 0.65 mm, more preferably 0 <N ≦ 0.65 mm.
設定移動ルートL1は、第一突合せ部J1の周方向において、攪拌ピンF2を押入した際に、封止体3の下側の第一基体部31の側面31cと、攪拌ピンF2の外周面とを平行にしつつ、両者をわずかに接触させるように適宜設定する。本実施形態では、凸部20の表面(上面)に設定移動ルートL1を設定している。
The set movement route L1 includes the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 and the outer peripheral surface of the stirring pin F2 when the stirring pin F2 is pushed in in the circumferential direction of the first butt portion J1. Are set as appropriate so that they are slightly in contact with each other while keeping them parallel to each other. In the present embodiment, the set movement route L1 is set on the surface (upper surface) of the convex portion 20.
本接合工程では、周壁部11の段差側面11bと封止体3の下側の第一基体部31の側面31cとの間の断面V字状の隙間に塑性流動材を流入させながら摩擦攪拌接合を行う。このとき、少なくとも攪拌ピンF2の外周面と封止体3の第一基体部31との接触により、第一基体部31の第二アルミニウム合金がわずかに削り取られ、第二アルミニウム合金がジャケット本体2側に混入する。
In this joining step, friction stir welding is performed while a plastic fluid material is allowed to flow into a gap having a V-shaped cross section between the stepped side surface 11b of the peripheral wall portion 11 and the side surface 31c of the first base portion 31 on the lower side of the sealing body 3. I do. At this time, at least the outer peripheral surface of the stirring pin F2 and the first base portion 31 of the sealing body 3 are brought into contact with each other, so that the second aluminum alloy of the first base portion 31 is slightly scraped off, and the second aluminum alloy is the jacket body 2. It mixes on the side.
設定移動ルートL1に沿って回転ツールFを一周させ、攪拌ピンF2が中間点S2に到達した後、回転ツールFはそのまま離脱区間に移行する。離脱区間では、図7に示すように、中間点S2から終了位置EP1に向かうまでの間に攪拌ピンF2を徐々に引抜いて、終了位置EP1でジャケット本体2から攪拌ピンF2を離脱させる。つまり、図8に示すように回転ツールFを一ヶ所に留まらせることなく、回転ツールFを終了位置EP1に移動させながら徐々に引抜いていく。
The rotation tool F is made to go around along the set movement route L1, and after the stirring pin F2 reaches the intermediate point S2, the rotation tool F shifts to the departure section as it is. In the detachment section, as shown in FIG. 7, the stirring pin F2 is gradually pulled out from the intermediate point S2 toward the end position EP1, and the stirring pin F2 is detached from the jacket body 2 at the end position EP1. That is, as shown in FIG. 8, the rotation tool F is gradually pulled out while being moved to the end position EP1 without staying at one place.
本実施形態では、終了位置EP1を周壁部11の端面11aにおいて、設定移動ルートL1よりも外側に設定している。また、本実施形態では、終了位置EP1を、終了位置EP1と中間点S2とを結ぶ線分と設定移動ルートL1とのなす角度が鈍角となる位置に設定している。回転ツールFの移動軌跡には塑性化領域W1が形成される。
In the present embodiment, the end position EP1 is set on the end surface 11a of the peripheral wall portion 11 outside the set movement route L1. Further, in the present embodiment, the end position EP1 is set at a position where the angle formed by the line segment connecting the end position EP1 and the intermediate point S2 and the set movement route L1 is an obtuse angle. A plasticized region W1 is formed in the movement locus of the rotation tool F.
以上説明した本実施形態に係る液冷ジャケットの製造方法によれば、ジャケット本体2と攪拌ピンF2との摩擦熱によって第一突合せ部J1の主としてジャケット本体2側の第一アルミニウム合金が攪拌されて塑性流動化され、第一突合せ部J1においてジャケット本体2の段差側面12bと封止体3の側面3c(第一基体部31の側面31c)とを接合することができる。また、攪拌ピンF2の外周面を封止体3の側面3cにわずかに接触させるに留めるため、封止体3からジャケット本体2への第二アルミニウム合金の混入を極力少なくすることができる。
According to the method for manufacturing a liquid-cooled jacket according to the present embodiment described above, the first aluminum alloy mainly on the jacket body 2 side of the first butt portion J1 is agitated by the frictional heat between the jacket body 2 and the stirring pin F2. It is plastically fluidized, and the stepped side surface 12b of the jacket body 2 and the side surface 3c of the sealing body 3 (the side surface 31c of the first base portion 31) can be joined at the first butt portion J1. Further, since the outer peripheral surface of the stirring pin F2 is kept slightly in contact with the side surface 3c of the sealing body 3, it is possible to minimize the mixing of the second aluminum alloy from the sealing body 3 into the jacket body 2.
これにより、第一突合せ部J1においては主としてジャケット本体2側の第一アルミニウム合金が摩擦攪拌されるため、接合強度の低下を抑制することができる。また、本実施形態では、封止体3のうち銅又は銅合金で形成された第二基体部32と回転ツールFとを接触させないため、銅又は銅合金がジャケット本体2側に混入することはない。また、封止体3の側面3cに傾斜を設けることで、当該側面3cと回転ツールFとの接触代を小さくすることができる。
As a result, in the first butt portion J1, the first aluminum alloy on the jacket body 2 side is mainly frictionally agitated, so that a decrease in joint strength can be suppressed. Further, in the present embodiment, since the second base portion 32 made of copper or copper alloy in the sealing body 3 and the rotating tool F are not brought into contact with each other, copper or copper alloy may be mixed into the jacket body 2 side. do not have. Further, by providing the side surface 3c of the sealing body 3 with an inclination, the contact allowance between the side surface 3c and the rotation tool F can be reduced.
また、本接合工程では、封止体3の裏面3bの法線方向に対する封止体3の側面3cの傾斜角度をθとし、攪拌ピンF2の外周面の回転中心軸線Cに対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行う。換言すると、攪拌ピンF2の外周面と、封止体3の側面3c(第一基体部31の側面31c)とを平行にした状態で摩擦攪拌接合を行うことができるため、高さ方向に亘ってバランス良く摩擦攪拌接合を行うことができる。
Further, in this joining step, the inclination angle of the side surface 3c of the sealing body 3 with respect to the normal direction of the back surface 3b of the sealing body 3 is θ, and the inclination angle of the outer peripheral surface of the stirring pin F2 with respect to the rotation center axis C is α. Then, friction stir welding is performed with θ = α. In other words, since the friction stir welding can be performed in a state where the outer peripheral surface of the stirring pin F2 and the side surface 3c of the sealing body 3 (the side surface 31c of the first base portion 31) are parallel to each other, the friction stir welding can be performed over the height direction. It is possible to perform friction stir welding in a well-balanced manner.
また、本実施形態では、攪拌ピンF2のみをジャケット本体2に接触させるため、ショルダ部を接触させる場合と比べて摩擦攪拌装置に作用する荷重を軽減することができる。
Further, in the present embodiment, since only the stirring pin F2 is brought into contact with the jacket body 2, the load acting on the friction stir device can be reduced as compared with the case where the shoulder portion is brought into contact with the jacket body 2.
また、本接合工程において、開始位置SP1及び終了位置EP1の位置は適宜設定すればよいが、開始位置SP1と設定移動ルートL1とのなす角度、終了位置EP1と設定移動ルートL1とのなす角度が鈍角となるように設定することにより、中間点S1,S2で回転ツールFの移動速度が低下することなくスムーズに本区間又は離脱区間に移行することができる。これにより、設定移動ルートL1上で回転ツールFが停止又は移動速度が低下することにより、摩擦熱が過大となることを防ぐことができる。なお、上方から見て回転ツールFの軌跡が円弧を描くように開始位置SP1から設定移動ルートL1に回転ツールFを移動させてもよい。同様に、上方から見て回転ツールFの軌跡が円弧を描くように設定移動ルートL1から終了位置EP1に回転ツールFを移動させてもよい。
Further, in the main joining step, the positions of the start position SP1 and the end position EP1 may be appropriately set, but the angle formed by the start position SP1 and the set movement route L1 and the angle formed by the end position EP1 and the set movement route L1 are different. By setting the angle to be obtuse, it is possible to smoothly shift to the main section or the departure section without reducing the moving speed of the rotation tool F at the intermediate points S1 and S2. As a result, it is possible to prevent the frictional heat from becoming excessive due to the rotation tool F stopping or the moving speed decreasing on the set movement route L1. The rotation tool F may be moved from the start position SP1 to the set movement route L1 so that the locus of the rotation tool F draws an arc when viewed from above. Similarly, the rotation tool F may be moved from the set movement route L1 to the end position EP1 so that the locus of the rotation tool F draws an arc when viewed from above.
また、回転ツールFを設定移動ルートL1と重複する位置まで移動させながら所定の深さとなるまで攪拌ピンF2を徐々に押入することにより、設定移動ルートL1上で摩擦熱が過大になるのを防ぐことができる。また、回転ツールFを移動させながら攪拌ピンF2を徐々に引抜いていくことにより、設定移動ルートL1上で摩擦熱が過大になるのを防ぐことができる。これにより、設定移動ルートL1上において、封止体3の第二アルミニウム合金がジャケット本体2側に混入するのを防ぐことができる。
Further, by gradually pushing the stirring pin F2 until it reaches a predetermined depth while moving the rotation tool F to a position overlapping the set movement route L1, it is possible to prevent the frictional heat from becoming excessive on the set movement route L1. be able to. Further, by gradually pulling out the stirring pin F2 while moving the rotating tool F, it is possible to prevent the frictional heat from becoming excessive on the set movement route L1. As a result, it is possible to prevent the second aluminum alloy of the sealing body 3 from being mixed into the jacket body 2 side on the set movement route L1.
また、封止体3が、下側の第一基体部31を第二アルミニウム合金、上側の第二基体部32を銅又は銅合金によって形成されたクラッド材であるため、銅又は銅合金の高い熱伝導性と、アルミニウム合金の軽量性を兼ね備えた液冷ジャケット1とすることができる。また、ジャケット本体2をアルミニウム合金鋳造材で形成しているため、液冷ジャケット1の強度を高めることができる。
Further, since the sealing body 3 is a clad material in which the lower first base portion 31 is made of a second aluminum alloy and the upper second base portion 32 is made of copper or a copper alloy, the copper or copper alloy is high. The liquid-cooled jacket 1 having both thermal conductivity and light weight of an aluminum alloy can be obtained. Further, since the jacket body 2 is made of cast aluminum alloy, the strength of the liquid-cooled jacket 1 can be increased.
また、本接合工程では、攪拌ピンF2と凸部20とを接触させた状態で摩擦攪拌を行うため、第一突合せ部J1の金属不足を防ぐことができる。また、本接合工程では、回転ツールFの回転方向及び進行方向は適宜設定すればよいが、回転ツールFの移動軌跡に形成される塑性化領域Wのうち、封止体3側がシアー側となり、ジャケット本体2側がフロー側となるように回転ツールFの回転方向及び進行方向を設定した。これにより、第一突合せ部J1の周囲における攪拌ピンF2による攪拌作用が高まり、第一突合せ部J1における温度上昇が期待でき、第一突合せ部J1において段差側面12bと封止体3の側面3cとをより確実に接合することができる。
Further, in the main joining step, since frictional stirring is performed in a state where the stirring pin F2 and the convex portion 20 are in contact with each other, it is possible to prevent a metal shortage in the first butt portion J1. Further, in this joining step, the rotation direction and the traveling direction of the rotation tool F may be appropriately set, but of the plasticized region W formed in the movement locus of the rotation tool F, the sealing body 3 side becomes the shear side. The rotation direction and the traveling direction of the rotation tool F were set so that the jacket body 2 side was the flow side. As a result, the stirring action by the stirring pin F2 around the first butt portion J1 is enhanced, and the temperature rise in the first butt portion J1 can be expected. Can be joined more reliably.
なお、シアー側(Advancing side)とは、被接合部に対する回転ツールFの外周の相対速度が、回転ツールFの外周における接線速度の大きさに移動速度の大きさを加算した値となる側を意味する。一方、フロー側(Retreating side)とは、回転ツールFの移動方向の反対方向に回転ツールFが回動することで、被接合部に対する回転ツールFの相対速度が低速になる側を言う。
The shear side is the side where the relative speed of the outer circumference of the rotating tool F with respect to the jointed portion is the value obtained by adding the magnitude of the moving speed to the magnitude of the tangential velocity on the outer circumference of the rotating tool F. means. On the other hand, the flow side (Retreating side) refers to a side in which the relative speed of the rotating tool F with respect to the jointed portion becomes low due to the rotation of the rotating tool F in the direction opposite to the moving direction of the rotating tool F.
また、封止体3の板厚寸法を、段差側面12bの高さ寸法よりも大きく設定している。これにより、封止体3に配置される発熱体の熱交換効率を高めることができる。
Further, the plate thickness dimension of the sealing body 3 is set to be larger than the height dimension of the step side surface 12b. As a result, the heat exchange efficiency of the heating element arranged in the sealing body 3 can be improved.
また、攪拌ピンF2の外周面に螺旋溝を設け、当該螺旋溝が形成されている領域の長さ寸法を、段差側面12bの高さ寸法よりも大きくしているため、第一突合せ部J1の高さ方向全体に亘って効率よく摩擦攪拌接合を行うことができる。
Further, since a spiral groove is provided on the outer peripheral surface of the stirring pin F2 and the length dimension of the region where the spiral groove is formed is larger than the height dimension of the step side surface 12b, the first butt portion J1 Friction stir welding can be performed efficiently over the entire height direction.
なお、本接合工程では、回転ツールFの回転速度を一定としてもよいが、可変させてもよい。本接合工程の押入区間において、開始位置SP1における回転ツールFの回転速度をV1とし、本区間における回転ツールFの回転速度をV2とすると、V1>V2としてもよい。回転速度V2は、設定移動ルートL1における予め設定された一定の回転速度である。つまり、開始位置SP1では、回転速度を高く設定しておき、押入区間内で徐々に回転速度を低減させながら本区間に移行してもよい。
In this joining step, the rotation speed of the rotation tool F may be constant, but may be variable. In the indentation section of the main joining step, if the rotation speed of the rotation tool F at the start position SP1 is V1 and the rotation speed of the rotation tool F in this section is V2, V1> V2 may be satisfied. The rotation speed V2 is a preset constant rotation speed in the set movement route L1. That is, at the start position SP1, the rotation speed may be set high, and the rotation speed may be gradually reduced in the closet section to shift to the main section.
また、第一本接合工程の離脱区間において、本区間における回転ツールFの回転速度をV2、終了位置EP1において離脱させるときの回転ツールFの回転速度をV3とすると、V3>V2としてもよい。つまり、離脱区間に移行したら、終了位置EP1に向けて徐々に回転速度を上げながら周壁部11から回転ツールFを離脱させてもよい。回転ツールFを周壁部11に押し入れる際又は離脱させる際に、前記のように設定することで、押入区間又は離脱区間時における少ない押圧力を、回転速度で補うことができるため、摩擦攪拌を好適に行うことができる。
Further, in the detachment section of the first main joining process, if the rotation speed of the rotation tool F in this section is V2 and the rotation speed of the rotation tool F when detached at the end position EP1 is V3, V3> V2 may be satisfied. That is, after shifting to the detachment section, the rotation tool F may be detached from the peripheral wall portion 11 while gradually increasing the rotation speed toward the end position EP1. By setting as described above when the rotary tool F is pushed into or detached from the peripheral wall portion 11, the small pressing force in the indentation section or the detachment section can be supplemented by the rotation speed, so that friction stir welding can be performed. It can be preferably performed.
[第二実施形態]
次に、本発明の第二実施形態に係る液冷ジャケットの製造方法について説明する。本実施形態に係る液冷ジャケットの製造では、準備工程と、載置工程と、本接合工程とを行う。準備工程及び載置工程は、第一実施形態と同一である。 [Second Embodiment]
Next, a method for manufacturing a liquid-cooled jacket according to the second embodiment of the present invention will be described. In the production of the liquid-cooled jacket according to the present embodiment, a preparation step, a mounting step, and a main joining step are performed. The preparation step and the placement step are the same as those in the first embodiment.
次に、本発明の第二実施形態に係る液冷ジャケットの製造方法について説明する。本実施形態に係る液冷ジャケットの製造では、準備工程と、載置工程と、本接合工程とを行う。準備工程及び載置工程は、第一実施形態と同一である。 [Second Embodiment]
Next, a method for manufacturing a liquid-cooled jacket according to the second embodiment of the present invention will be described. In the production of the liquid-cooled jacket according to the present embodiment, a preparation step, a mounting step, and a main joining step are performed. The preparation step and the placement step are the same as those in the first embodiment.
本実施形態は、図9に示すように、本接合工程の本区間における回転ツールFの「所定の深さ」が、第一実施形態よりも深くなっている。本実施形態では、第一実施形態と相違する部分を中心に説明する。
In this embodiment, as shown in FIG. 9, the "predetermined depth" of the rotation tool F in this section of the main joining process is deeper than that in the first embodiment. In this embodiment, the parts different from the first embodiment will be mainly described.
本実施形態に係る本接合工程の本区間では、図9に示すように、攪拌ピンF2の平坦面F3が、段差底面12aの高さよりも深くなるように所定の深さを設定している。
In this section of the main joining process according to the present embodiment, as shown in FIG. 9, a predetermined depth is set so that the flat surface F3 of the stirring pin F2 is deeper than the height of the step bottom surface 12a.
以上説明した本実施形態に係る液冷ジャケットの製造方法によれば、第一実施形態と略同等の効果を奏することができる。また、本実施形態によれば、第二突合せ部J2周りを確実に摩擦攪拌できるため、接合強度を高めることができる。
According to the method for manufacturing a liquid-cooled jacket according to the present embodiment described above, it is possible to obtain substantially the same effect as that of the first embodiment. Further, according to the present embodiment, since friction stir welding can be reliably performed around the second butt portion J2, the joint strength can be increased.
[第三実施形態]
次に、本発明の第三実施形態に係る液冷ジャケットの製造方法について説明する。本実施形態では、図10に示すように、本接合工程における開始位置SP1及び終了位置EP1の位置をいずれも設定移動ルートL1上に設定する点で第一実施形態と相違する。本実施形態では、第一実施形態と相違する部分を中心に説明する。 [Third Embodiment]
Next, a method for manufacturing a liquid-cooled jacket according to the third embodiment of the present invention will be described. As shown in FIG. 10, the present embodiment is different from the first embodiment in that the positions of the start position SP1 and the end position EP1 in the main joining process are both set on the set movement route L1. In this embodiment, the parts different from the first embodiment will be mainly described.
次に、本発明の第三実施形態に係る液冷ジャケットの製造方法について説明する。本実施形態では、図10に示すように、本接合工程における開始位置SP1及び終了位置EP1の位置をいずれも設定移動ルートL1上に設定する点で第一実施形態と相違する。本実施形態では、第一実施形態と相違する部分を中心に説明する。 [Third Embodiment]
Next, a method for manufacturing a liquid-cooled jacket according to the third embodiment of the present invention will be described. As shown in FIG. 10, the present embodiment is different from the first embodiment in that the positions of the start position SP1 and the end position EP1 in the main joining process are both set on the set movement route L1. In this embodiment, the parts different from the first embodiment will be mainly described.
本実施形態に係る液冷ジャケットの製造では、準備工程と、載置工程と、本接合工程とを行う。準備工程及び載置工程は、第一実施形態と同一である。
In the production of the liquid-cooled jacket according to the present embodiment, a preparation step, a mounting step, and a main joining step are performed. The preparation step and the placement step are the same as those in the first embodiment.
本接合工程では、図10に示すように、開始位置SP2を設定移動ルートL1上に設定する。本接合工程では、開始位置SP2から中間点S1までの押入区間と、中間点S1から一周廻って中間点S2までの本区間と、中間点S2から終了位置EP2までの離脱区間の三つの区間を連続して摩擦攪拌する。
In this joining process, as shown in FIG. 10, the start position SP2 is set on the set movement route L1. In this joining step, there are three sections: a push-in section from the start position SP2 to the intermediate point S1, a main section from the intermediate point S1 to the intermediate point S2, and a detachment section from the intermediate point S2 to the end position EP2. Continuously rub and stir.
押入区間では、開始位置SP2から中間点S1までの摩擦攪拌を行う。押入区間では、周壁部11の端面11aに対して回転中心軸線Cを垂直となるようにしつつ、右回転させた攪拌ピンF2を開始位置SP2に挿入し、中間点S1まで移動させる。この際、少なくとも中間点S1に到達するまでに予め設定された「所定の深さ」に達するように攪拌ピンF2を徐々に押し入れていく(図5参照)。
In the closet section, friction stir welding is performed from the start position SP2 to the intermediate point S1. In the closet section, the stirring pin F2 rotated clockwise is inserted into the start position SP2 while the rotation center axis C is perpendicular to the end surface 11a of the peripheral wall portion 11, and is moved to the intermediate point S1. At this time, the stirring pin F2 is gradually pushed in so as to reach a preset "predetermined depth" by at least reaching the intermediate point S1 (see FIG. 5).
押入区間における、中間点S1に達した際の攪拌ピンF2の外周面と封止体3の下側の第一基体部31の側面31cとの接触代N、および所定の深さは第一実施形態と同様である。
In the closet section, the contact allowance N between the outer peripheral surface of the stirring pin F2 and the side surface 31c of the first base portion 31 on the lower side of the sealing body 3 when the intermediate point S1 is reached, and the predetermined depth are the first implementation. Similar to form.
図11に示すように、回転ツールFを一周させて攪拌ピンF2が中間点S2に到達したら、そのまま離脱区間に移行する。離脱区間では、中間点S2から終了位置EP2に向かうまでの間に攪拌ピンF2を徐々に引抜いて、設定移動ルートL1上に設定された終了位置EP2でジャケット本体2から攪拌ピンF2を離脱させる。
As shown in FIG. 11, when the stirring pin F2 reaches the intermediate point S2 by rotating the rotating tool F around the rotation tool F, the rotation tool F shifts to the withdrawal section as it is. In the detachment section, the stirring pin F2 is gradually pulled out from the intermediate point S2 toward the ending position EP2, and the stirring pin F2 is detached from the jacket body 2 at the ending position EP2 set on the set movement route L1.
以上説明した本実施形態に係る液冷ジャケットの製造方法によっても第一実施形態と略同等の効果を奏することができる。第三実施形態に係る本接合工程の押入区間では、回転ツールFを設定移動ルートL1上で移動させつつ所定の深さとなるまで攪拌ピンF2を徐々に押入することにより、設定移動ルートL1上の一点で回転ツールFが停止して摩擦熱が過大になるのを防ぐことができる。また、第三実施形態に係る本接合工程の離脱区間では、回転ツールFを設定移動ルートL1上で移動させつつ攪拌ピンF2を徐々に引抜いていくことにより、設定移動ルートL1上の一点で回転ツールFが停止して摩擦熱が過大になるのを防ぐことができる。これにより、設定移動ルートL1において、封止体3の第二アルミニウム合金が、ジャケット本体2側に混入するのを防ぐことができる。
The liquid-cooled jacket manufacturing method according to the present embodiment described above can also achieve substantially the same effect as that of the first embodiment. In the closet section of the main joining step according to the third embodiment, the rotation tool F is moved on the set movement route L1 and the stirring pin F2 is gradually pushed in until the depth reaches a predetermined depth, so that the stirring pin F2 is gradually pushed on the set movement route L1. It is possible to prevent the rotation tool F from stopping at one point and excessive frictional heat. Further, in the detachment section of the main joining step according to the third embodiment, the rotation tool F is moved on the set movement route L1 and the stirring pin F2 is gradually pulled out to rotate at one point on the set movement route L1. It is possible to prevent the tool F from stopping and the frictional heat from becoming excessive. As a result, it is possible to prevent the second aluminum alloy of the sealing body 3 from being mixed into the jacket body 2 side in the set movement route L1.
なお、第三実施形態における本接合工程の本区間では、第一実施形態のように攪拌ピンF2の平坦面F3が、段差底面12aに達しないように所定の深さを設定してもよいし、第二実施形態のように攪拌ピンF2の平坦面F3が段差底面12aよりも下方に位置するように設定してもよい。攪拌ピンF2の平坦面F3を段差底面12aよりも下方に位置させることで接合強度をより高めることができる。
In this section of the main joining step in the third embodiment, a predetermined depth may be set so that the flat surface F3 of the stirring pin F2 does not reach the step bottom surface 12a as in the first embodiment. , The flat surface F3 of the stirring pin F2 may be set to be located below the step bottom surface 12a as in the second embodiment. By locating the flat surface F3 of the stirring pin F2 below the step bottom surface 12a, the bonding strength can be further increased.
以上、本発明の実施形態について説明したが、適宜設計変更が可能である。例えば、前記した各実施形態において、段差側面12bは、開口部に向かって外側に広がるように傾斜させてもよい。この場合、本接合工程では、傾斜した段差側面12bと封止体3の側面3cとの間の隙間を塑性流動材で埋めながら摩擦攪拌接合を行う。
Although the embodiments of the present invention have been described above, the design can be changed as appropriate. For example, in each of the above-described embodiments, the step side surface 12b may be inclined so as to spread outward toward the opening. In this case, in this joining step, friction stir welding is performed while filling the gap between the inclined step side surface 12b and the side surface 3c of the sealing body 3 with a plastic fluid material.
1 液冷ジャケット
11 周壁部
12 段差部
2 ジャケット本体
3 封止体
3b 裏面(封止体)
31 第一基体部(封止体)
32 第二基体部(封止体)
F 回転ツール
F1 基軸部
F2 攪拌ピン
F3 平坦面
J1 第一突合せ部
J2 第二突合せ部
W 塑性化領域
L1 設定移動ルート
SP1,SP2 開始位置
EP1,EP2 終了位置 1 Liquid-cooledjacket 11 Peripheral wall part 12 Step part 2 Jacket body 3 Sealing body 3b Back side (sealing body)
31 First substrate (sealing body)
32 Second base part (sealing body)
F Rotation tool F1 Base shaft part F2 Stirring pin F3 Flat surface J1 First butt part J2 Second butt part W Plasticization area L1 Setting movement route SP1, SP2 Start position EP1, EP2 End position
11 周壁部
12 段差部
2 ジャケット本体
3 封止体
3b 裏面(封止体)
31 第一基体部(封止体)
32 第二基体部(封止体)
F 回転ツール
F1 基軸部
F2 攪拌ピン
F3 平坦面
J1 第一突合せ部
J2 第二突合せ部
W 塑性化領域
L1 設定移動ルート
SP1,SP2 開始位置
EP1,EP2 終了位置 1 Liquid-cooled
31 First substrate (sealing body)
32 Second base part (sealing body)
F Rotation tool F1 Base shaft part F2 Stirring pin F3 Flat surface J1 First butt part J2 Second butt part W Plasticization area L1 Setting movement route SP1, SP2 Start position EP1, EP2 End position
Claims (15)
- 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンの外周面は先細りとなるように傾斜しており、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、回転する前記攪拌ピンのみを前記設定移動ルートよりもさらに外側に設定した開始位置に挿入した後、前記回転ツールを前記設定移動ルートまで移動させつつ所定の深さとなるまで前記攪拌ピンを徐々に押入することを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The outer peripheral surface of the stirring pin is inclined so as to be tapered.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Along a preset movement route on the end face of the peripheral wall portion, with only the stirring pin of the rotating tool in contact with the jacket body and slightly in contact with the side surface of the sealing body. Including the main joining step of rotating the rotary tool around and performing friction stir welding.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, θ = While performing friction stirring joint in the state of α, after inserting only the rotating stirring pin into the set start position further outside the set movement route, the rotation tool is moved to the set movement route and determined. A method for manufacturing a liquid-cooled jacket, characterized in that the stirring pin is gradually pushed in until the depth of the liquid-cooled jacket is reached. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンの外周面は先細りとなるように傾斜しており、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルート上に設定した開始位置から前記攪拌ピンを挿入し、進行方向に移動させつつ所定の深さとなるまで徐々に前記攪拌ピンを押入することを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The outer peripheral surface of the stirring pin is inclined so as to be tapered.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Along a preset movement route on the end face of the peripheral wall portion, with only the stirring pin of the rotating tool in contact with the jacket body and slightly in contact with the side surface of the sealing body. Including the main joining step of rotating the rotary tool around and performing friction stir welding.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, θ = Friction stir welding is performed in the state of α, and the stirring pin is inserted from the start position set on the set movement route, and the stirring pin is gradually pushed in until it reaches a predetermined depth while moving in the traveling direction. A method for manufacturing a liquid-cooled jacket. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、回転する前記攪拌ピンのみを前記設定移動ルートよりも外側に設定した開始位置に挿入した後、前記回転ツールを前記設定移動ルートまで移動させつつ所定の深さとなるまで前記攪拌ピンを徐々に押入することを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The stirring pin has an outer peripheral surface that is inclined so as to be tapered, and has a flat tip surface.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Only the stirring pin of the rotating tool is brought into contact with the jacket body, the tip of the stirring pin of the rotating rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted. It includes a main joining step of performing friction stir welding by rotating the rotating tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface of the sealing body.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis, θ = α. In addition to performing friction stirring joint in this state, after inserting only the rotating stirring pin into the set start position outside the set movement route, the rotation tool is moved to the set movement route to a predetermined depth. A method for manufacturing a liquid-cooled jacket, which comprises gradually pushing in the stirring pin until the stirring pin becomes full. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルート上に設定した開始位置から前記攪拌ピンを挿入し、進行方向に移動させつつ所定の深さとなるまで徐々に前記攪拌ピンを押入することを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The stirring pin has an outer peripheral surface that is inclined so as to be tapered, and has a flat tip surface.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Only the stirring pin of the rotating tool is brought into contact with the jacket body, the tip of the stirring pin of the rotating rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted. It includes a main joining step of performing friction stir welding by rotating the rotating tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface of the sealing body.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis, θ = α. In addition to performing friction stir welding in this state, insert the stirring pin from the start position set on the set movement route, and gradually push in the stirring pin until it reaches a predetermined depth while moving in the traveling direction. A method for manufacturing a liquid-cooled jacket. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンの外周面は先細りとなるように傾斜しており、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルートよりも外側に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部の端面から徐々に引き抜いて前記終了位置で前記周壁部から前記回転ツールを離脱させることを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The outer peripheral surface of the stirring pin is inclined so as to be tapered.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Along a preset movement route on the end face of the peripheral wall portion, with only the stirring pin of the rotating tool in contact with the jacket body and slightly in contact with the side surface of the sealing body. Including the main joining step of rotating the rotary tool around and performing friction stir welding.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, θ = Friction stir welding is performed in the state of α, the end position is set outside the set movement route, and after friction stir welding with respect to the first butt portion, the rotation tool is moved to the end position as described above. A method for manufacturing a liquid-cooled jacket, which comprises gradually pulling out a stirring pin from an end surface of the peripheral wall portion to separate the rotating tool from the peripheral wall portion at the end position. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンの外周面は先細りとなるように傾斜しており、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させるとともに、前記封止体の側面にもわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度をαとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記本接合工程において、前記設定移動ルート上に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部から徐々に引き抜いて前記終了位置で前記封止体から前記回転ツールを離脱させることを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The outer peripheral surface of the stirring pin is inclined so as to be tapered.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Along a preset movement route on the end face of the peripheral wall portion, with only the stirring pin of the rotating tool in contact with the jacket body and slightly in contact with the side surface of the sealing body. Including the main joining step of rotating the rotary tool around and performing friction stir welding.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle of the outer peripheral surface of the stirring pin with respect to the rotation center axis is α, θ = Friction stir welding is performed in the state of α, and in the main joining step, an end position is set on the set movement route, and after friction stir welding with respect to the first butt portion, the rotation tool is moved to the end position. A method for manufacturing a liquid-cooled jacket, characterized in that the stirring pin is gradually pulled out from the peripheral wall portion while being moved, and the rotating tool is separated from the sealing body at the end position. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記設定移動ルートよりも外側に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部の端面から徐々に引き抜いて前記終了位置で前記周壁部から前記回転ツールを離脱させることを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The stirring pin has an outer peripheral surface that is inclined so as to be tapered, and has a flat tip surface.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Only the stirring pin of the rotating tool is brought into contact with the jacket body, the tip of the stirring pin of the rotating rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted. It includes a main joining step of performing friction stir welding by rotating the rotating tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface of the sealing body.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis, θ = α. In addition to performing friction stir welding in this state, the end position is set outside the set movement route, and after friction stir welding with respect to the first butt portion, the rotation tool is moved to the end position and the stirring is performed. A method for manufacturing a liquid-cooled jacket, which comprises gradually pulling out a pin from an end surface of the peripheral wall portion to separate the rotating tool from the peripheral wall portion at the end position. - 底部、前記底部の周縁から立ち上がる周壁部を備えるジャケット本体と、前記ジャケット本体の開口部を封止する封止体と、を攪拌ピンを備える回転ツールを用いて接合する液冷ジャケットの製造方法であって、
前記ジャケット本体は第一アルミニウム合金によって形成されており、前記封止体は下側が第二アルミニウム合金、上側が銅又は銅合金によって形成されているクラッド材であり、前記第一アルミニウム合金は前記第二アルミニウム合金よりも硬度の高い材種であり、
前記攪拌ピンは、先細りとなるように傾斜する外周面を備えるとともに平坦な先端面を備え、
前記ジャケット本体について、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって立ち上がる段差側面と、を有する段差部を形成するとともに、前記封止体について、下側から上側に向かって平面視面積が縮小するように少なくとも第二アルミニウム合金の下側の側面に傾斜を設ける準備工程と、
前記ジャケット本体に前記封止体を載置し、前記段差側面と前記封止体の側面とを突き合わせてV字の隙間を有する第一突合せ部を形成するとともに、前記段差底面と前記封止体の裏面とを重ね合わせて第二突合せ部を形成する載置工程と、
回転する前記回転ツールの前記攪拌ピンのみを前記ジャケット本体に接触させ、回転する前記回転ツールの前記攪拌ピンの先端を前記段差底面の高さよりも深く挿入するとともに、前記攪拌ピンの前記外周面を前記封止体の側面にわずかに接触させた状態で、前記周壁部の端面に予め設定した設定移動ルートに沿って前記回転ツールを一周させて摩擦攪拌接合を行う本接合工程と、を含み、
前記本接合工程では、前記封止体の裏面の法線方向に対する前記封止体の側面の傾斜角度をθとし、前記攪拌ピンの外周面の回転中心軸線に対する傾斜角度αとすると、θ=αにした状態で摩擦攪拌接合を行うとともに、前記本接合工程において、前記設定移動ルート上に終了位置を設定し、前記第一突合せ部に対する摩擦攪拌接合の後、前記回転ツールを前記終了位置に移動させつつ前記攪拌ピンを前記周壁部から徐々に引き抜いて前記終了位置で前記封止体から前記回転ツールを離脱させることを特徴とする液冷ジャケットの製造方法。 A method for manufacturing a liquid-cooled jacket in which a jacket body having a bottom portion and a peripheral wall portion rising from the peripheral edge of the bottom portion and a sealing body for sealing an opening of the jacket body are joined by using a rotating tool equipped with a stirring pin. There,
The jacket body is formed of a first aluminum alloy, and the sealing body is a clad material formed of a second aluminum alloy on the lower side and copper or a copper alloy on the upper side, and the first aluminum alloy is the first aluminum alloy. It is a grade with higher hardness than dialuminum alloy,
The stirring pin has an outer peripheral surface that is inclined so as to be tapered, and has a flat tip surface.
Regarding the jacket body, a step portion having a step bottom surface and a step side surface rising from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion, and the sealing body is formed from the lower side. A preparatory step of inclining at least the lower side surface of the second aluminum alloy so that the plane view area decreases toward the upper side.
The sealing body is placed on the jacket body, and the side surface of the step and the side surface of the sealing body are abutted to form a first butt portion having a V-shaped gap, and the bottom surface of the step and the sealing body are formed. The mounting process of forming the second butt portion by superimposing the back surface of the
Only the stirring pin of the rotating tool is brought into contact with the jacket body, the tip of the stirring pin of the rotating rotating tool is inserted deeper than the height of the bottom surface of the step, and the outer peripheral surface of the stirring pin is inserted. It includes a main joining step of performing friction stir welding by rotating the rotating tool around the end face of the peripheral wall portion along a preset movement route in a state of being slightly in contact with the side surface of the sealing body.
In the main joining step, if the inclination angle of the side surface of the sealing body with respect to the normal direction of the back surface of the sealing body is θ, and the inclination angle α of the outer peripheral surface of the stirring pin with respect to the rotation center axis, θ = α. In addition to performing friction stir welding in this state, in the main joining step, an end position is set on the set movement route, and after friction stir welding with respect to the first butt portion, the rotation tool is moved to the end position. A method for manufacturing a liquid-cooled jacket, which comprises gradually pulling out the stirring pin from the peripheral wall portion while allowing the stirring pin to be separated from the sealing body at the end position. - 前記準備工程では、前記周壁部の端面に、前記段差側面に沿う凸部を形成し、
前記本接合工程では、前記攪拌ピンと前記凸部とを接触させた状態で摩擦攪拌を行うことを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 In the preparatory step, a convex portion along the step side surface is formed on the end surface of the peripheral wall portion.
The method for manufacturing a liquid-cooled jacket according to any one of claims 1 to 8, wherein in the main joining step, frictional stirring is performed in a state where the stirring pin and the convex portion are in contact with each other. - 前記封止体の板厚を、前記段差側面の高さ寸法よりも大きくすることを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 The method for manufacturing a liquid-cooled jacket according to any one of claims 1 to 8, wherein the plate thickness of the sealing body is made larger than the height dimension of the step side surface.
- 前記攪拌ピンの外周面に螺旋溝を設け、当該螺旋溝が形成されている領域の長さ寸法を、前記段差側面の高さ寸法よりも大きくすることを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 Claims 1 to 8 are characterized in that a spiral groove is provided on the outer peripheral surface of the stirring pin, and the length dimension of the region where the spiral groove is formed is made larger than the height dimension of the step side surface. The method for manufacturing a liquid-cooled jacket according to any one of the above.
- 前記第一アルミニウム合金は鋳造材で形成され、第二アルミニウム合金は展伸材で形成されていることを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 The production of the liquid-cooled jacket according to any one of claims 1 to 8, wherein the first aluminum alloy is formed of a cast material and the second aluminum alloy is formed of a wrought material. Method.
- 前記回転ツールの外周面に基端側から先端側に向かうにつれて左回りの螺旋溝を刻設した場合、前記回転ツールを右回転させ、
前記回転ツールの外周面に基端側から先端側に向かうにつれて右回りの螺旋溝を刻設した場合、前記回転ツールを左回転させることを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 When a left-handed spiral groove is engraved on the outer peripheral surface of the rotating tool from the proximal end side toward the distal end side, the rotating tool is rotated clockwise.
Any one of claims 1 to 8, wherein when a clockwise spiral groove is engraved on the outer peripheral surface of the rotating tool from the proximal end side toward the distal end side, the rotating tool is rotated counterclockwise. The method for manufacturing a liquid-cooled jacket according to the item. - 前記本接合工程では、前記回転ツールの移動軌跡に形成される塑性化領域のうち、前記ジャケット本体側がフロー側となり、前記封止体側がシアー側となるように前記回転ツールの回転方向及び進行方向を設定することを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 In the main joining step, the rotation direction and the traveling direction of the rotation tool so that the jacket body side is the flow side and the sealing body side is the shear side in the plasticized region formed in the movement locus of the rotation tool. The method for manufacturing a liquid-cooled jacket according to any one of claims 1 to 8, wherein the liquid-cooled jacket is set.
- 前記準備工程では、前記周壁部の内周縁に、段差底面と、当該段差底面から前記開口部に向かって広がるように斜めに立ち上がる段差側面と、を有する段差部を形成し、
前記本接合工程では、前記段差側面と前記封止体の側面との間の隙間を塑性流動材で埋めることを特徴とする請求項1乃至請求項8のいずれか一項に記載の液冷ジャケットの製造方法。 In the preparatory step, a step portion having a step bottom surface and a step side surface that rises diagonally from the step bottom surface toward the opening is formed on the inner peripheral edge of the peripheral wall portion.
The liquid-cooled jacket according to any one of claims 1 to 8, wherein in the main joining step, a gap between the step side surface and the side surface of the sealing body is filled with a plastic fluid material. Manufacturing method.
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WO2019038938A1 (en) * | 2017-08-22 | 2019-02-28 | 日本軽金属株式会社 | Liquid cooling jacket manufacturing method |
WO2019038972A1 (en) * | 2017-08-24 | 2019-02-28 | 日本軽金属株式会社 | Liquid cooling jacket manufacturing method |
JP2019111548A (en) * | 2017-12-21 | 2019-07-11 | 日本軽金属株式会社 | Manufacturing method for liquid-cooled jacket |
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