CN114799603B - Jointed board welding method and ship - Google Patents
Jointed board welding method and ship Download PDFInfo
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- CN114799603B CN114799603B CN202210635021.5A CN202210635021A CN114799603B CN 114799603 B CN114799603 B CN 114799603B CN 202210635021 A CN202210635021 A CN 202210635021A CN 114799603 B CN114799603 B CN 114799603B
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- clamping groove
- welding method
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- 238000003466 welding Methods 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 186
- 239000010959 steel Substances 0.000 claims abstract description 186
- 239000000463 material Substances 0.000 abstract description 15
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to the technical field of ships and discloses a jointed board welding method and a ship. The jointed board welding method comprises the following steps: s10: a first side surface of the first steel plate is provided with a lug extending along a first direction, a second side surface of the second steel plate is provided with a clamping groove extending along the first direction, and the first direction is the same as the length direction of the first steel plate or the second steel plate; s20: the convex blocks are clamped into the clamping grooves, and the first side face and the second side face are mutually abutted to connect the first steel plate and the second steel plate once; s30: and welding the part of the first side surface, on which the protruding block is not arranged, with the part of the second side surface, on which the clamping groove is not arranged, so as to secondarily connect the first steel plate with the second steel plate. The jointed board welding method can reduce the use amount of the welding materials required during welding and can lead the welding efficiency to be higher.
Description
Technical Field
The invention relates to the technical field of ships, in particular to a jointed board welding method and a ship.
Background
Currently, submerged arc welding is generally adopted in a ship for a splicing mode between two steel plates, so that the two steel plates are spliced into a whole plate in a pure welding mode. The quantity of spliced steel plates to be welded in the ship is large, so that the quantity of welding materials required by adopting a pure welding mode is large; in addition, for the steel plate with thicker thickness, a Y-shaped groove or an X-shaped groove is required to be formed on the steel plate before welding, and the welding material consumption required by welding is further increased due to the groove forming, so that the cost of ship construction is higher; meanwhile, due to the change of the welding groove on the steel plate, the required welding time is longer, the welding efficiency is lower, and finally the building period of the ship is longer.
Therefore, there is a need for a panel welding method and a ship that can solve the above problems.
Disclosure of Invention
An object of the present invention is to provide a panel welding method, which can reduce the amount of welding material required for welding and can make the welding efficiency higher.
To achieve the purpose, the invention adopts the following technical scheme:
a panel welding method for connecting a first steel plate and a second steel plate, the panel welding method comprising the steps of:
S10: a first side surface of the first steel plate is provided with a lug extending along a first direction, a second side surface of the second steel plate is provided with a clamping groove extending along the first direction, and the first direction is the same as the length direction of the first steel plate or the second steel plate;
S20: the convex blocks are clamped into the clamping grooves, and the first side face and the second side face are mutually abutted to connect the first steel plate and the second steel plate once;
S30: and welding the part of the first side surface, on which the protruding block is not arranged, with the part of the second side surface, on which the clamping groove is not arranged, so as to secondarily connect the first steel plate with the second steel plate.
Further, in the step S10, the extension length of the bump on the first side is the same as the length of the first steel plate, and the extension length of the clip groove on the second side is the same as the length of the second steel plate and the extension length of the bump, respectively.
Further, in the step S10, the thickness of the first steel plate is the same as the thickness of the second steel plate.
Further, in the step S10, the protrusion is provided on the first side of the first steel plate according to the thickness of the first steel plate, and the clamping groove is provided on the second side of the second steel plate according to the thickness of the second steel plate.
Further, the bump is formed with a third side and two fourth sides, the third side is parallel to the first side, the two fourth sides are respectively located at two opposite sides of the third side, each fourth side is obliquely arranged between the first side and the third side, the bump has structural parameters L, W and θ related to a thickness value H of the first steel plate, L is a length of the third side in a second direction, W is a distance between two connection points between the fourth side and the first side in the second direction, θ is an included angle between the third side and the fourth side, a structural parameter of the clamping groove is matched with a structural parameter of the bump, and the second direction is the same as a thickness direction of the first steel plate.
Further, the structural parameters of the clamping groove and the structural parameters of the protruding block are obtained through finite element analysis.
Further, obtaining structural parameters of the bump
Further, obtaining structural parameters of the bump
Further, obtaining structural parameters of the bump
Another object of the invention is to propose a vessel which is less costly to build and has a shorter construction period.
To achieve the purpose, the invention adopts the following technical scheme:
a ship comprises a first steel plate and a second steel plate, wherein the first steel plate and the second steel plate are connected by adopting the jointed board welding method.
The beneficial effects of the invention are as follows:
The first steel plate and the second steel plate can be connected once by clamping the convex blocks on the first steel plate in the clamping grooves on the second steel plate and enabling the first side surface of the first steel plate to be in contact with the second side surface of the second steel plate; then welding the part, on which the protruding blocks are not arranged, of the first side surface of the first steel plate and the part, on which the clamping grooves are not arranged, of the second side surface of the second steel plate, so as to carry out secondary connection on the first steel plate and the second steel plate, and thus connection between the first steel plate and the second steel plate is completed; in this way, the first steel plate and the second steel plate are connected in advance in a clamping manner, and then the first steel plate and the second steel plate are welded; compared with the pure welding mode adopted in the prior art, the method can save the welding material consumption required by welding so as to reduce the welding material consumption required by welding; in addition, for the first steel plate and the second steel plate with thicker thickness, Y-shaped grooves or X-shaped grooves are not required to be formed on the first steel plate and the second steel plate before welding, so that the welding material consumption required by welding is prevented from being further increased due to the opening of the grooves, and the welding material consumption required by welding can be further reduced; meanwhile, the change of grooves on the first steel plate and the second steel plate is not needed to be considered during welding, so that the required welding time is shorter, and the welding efficiency is higher.
Drawings
FIG. 1 is a schematic flow chart of a method for welding jointed boards provided by the invention;
FIG. 2 is a schematic illustration of the connection between a first steel plate and a second steel plate provided by the present invention;
FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2;
Fig. 4 is a second schematic diagram of the connection between the first steel plate and the second steel plate according to the present invention.
Reference numerals:
1-a first steel sheet; 11-a first side; 2-a second steel plate; 3-bump; 31-a third side; 32-fourth side; 4-clamping groove.
Detailed Description
In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the invention more clear, the technical scheme of the invention is further described below by a specific embodiment in combination with the attached drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of operation, and are not intended to indicate or imply that the structures or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
In this embodiment, a panel welding method and a ship welded by the panel welding method are provided, the ship comprises a plurality of first steel plates and a plurality of second steel plates, the structures and the sizes of the first steel plates and the second steel plates are identical, and the ship adopts the panel welding method to connect the plurality of first steel plates and the plurality of second steel plates.
Specifically, as shown in fig. 1 to 4, the panel welding method comprises the following steps: s10: a first side 11 of the first steel plate 1 is provided with a protruding block 3 extending along a first direction, a second side of the second steel plate 2 is provided with a clamping groove 4 extending along the first direction, and the first direction is the same as the length direction of the first steel plate 1 or the second steel plate 2; s20: the convex block 3 is clamped into the clamping groove 4, and the first side face 11 and the second side face are mutually abutted so as to connect the first steel plate 1 and the second steel plate 2 once; s30: the portion of the first side 11 where the bump 3 is not provided and the portion of the second side where the card slot 4 is not provided are welded to secondarily connect the first steel sheet 1 and the second steel sheet 2.
The first steel plate 1 and the second steel plate 2 can be connected once by firstly clamping the convex blocks 3 on the first steel plate 1 in the clamping grooves 4 on the second steel plate 2 and mutually abutting the first side surfaces 11 of the first steel plate 1 and the second side surfaces of the second steel plate 2; then welding the part of the first side surface 11 of the first steel plate 1, which is not provided with the convex blocks 3, and the part of the second side surface of the second steel plate 2, which is not provided with the clamping grooves 4, so as to carry out secondary connection on the first steel plate 1 and the second steel plate 2, thereby completing connection between the first steel plate 1 and the second steel plate 2; in this way, the first steel plate 1 and the second steel plate 2 are connected in advance by clamping, and then the first steel plate 1 and the second steel plate 2 are welded; compared with the pure welding mode adopted in the prior art, the method can save the welding material consumption required by welding so as to reduce the welding material consumption required by welding; in addition, for the first steel plate 1 and the second steel plate 2 with thicker thickness, a Y-shaped groove or an X-shaped groove is not required to be formed on the first steel plate 1 and the second steel plate 2 before welding, so that the welding material consumption required by welding is prevented from being further increased due to the formation of the grooves, and the welding material consumption required by welding can be further reduced; meanwhile, since the change of the grooves on the first and second steel plates 1 and 2 is not required to be considered any more at the time of welding, the required welding time is short, so that the welding efficiency is high.
Moreover, since the first steel plate 1 and the second steel plate 2 in the present embodiment are connected with each other twice, the first connection is the connection between the bump 3 and the clamping groove 4, and the second connection is welding; compared with a pure welding mode in which only a melted welding material is used as an adhesive in the prior art, the jointed plate welding method in the embodiment has a more compact connecting effect on the first steel plate 1 and the second steel plate 2, and can enable the connection firmness between the first steel plate 1 and the second steel plate 2 to be better.
The ship in the embodiment adopts the jointed board welding method to weld, so that the welding material consumption required during welding can be reduced, and the welding cost is saved, so that the construction cost of the ship is lower; and the required welding time is shorter, so that the welding efficiency is higher, and the construction period of the ship is shorter.
Further, the extension length of the protruding block 3 on the first side surface 11 is the same as the length of the first steel plate 1, and the extension length of the clamping groove 4 on the second side surface is the same as the length of the second steel plate 2 and the extension length of the protruding block 3, so that the lengths of the protruding block 3 and the clamping groove 4 can be at the maximum value, the clamping area between the clamping groove 4 and the protruding block 3 is increased, the clamping between the protruding block 3 and the clamping groove 4 is further tight, and the connection firmness between the first steel plate 1 and the second steel plate 2 is further ensured.
Specifically, in step S10, the projection 3 is provided on the first side 11 of the first steel plate 1 according to the thickness of the first steel plate 1, and the locking groove 4 is provided on the second side of the second steel plate 2 according to the thickness of the second steel plate 2; that is, the sizes and shapes of the protruding blocks 3 and the clamping grooves 4 need to be adaptively adjusted according to the thicknesses of the first steel plate 1 and the second steel plate 2 to be connected, so that the stress born by the first steel plate 1 and the second steel plate 2 is smaller when the protruding blocks 3 are clamped in the clamping grooves 4, and further the welding work can be facilitated, and the welding effect can be better due to the fact that the welding material consumption used during welding is smaller.
Further, as shown in fig. 2 to 4, the bump 3 is formed with a third side 31 and two fourth sides 32, the third side 31 is disposed parallel to the first side 11, and the third side 31 is disposed in a direction away from the first side 11, that is, a space is provided between the first side 11 and the third side 31; the two fourth side surfaces 32 are respectively positioned on two opposite sides of the third side surface 31, each fourth side surface 32 is obliquely arranged between the first side surface 11 and the third side surface 31, and the two fourth side surfaces 32 are in a V-shaped structure; the bump 3 has structural parameters L, W and θ related to a thickness value H of the first steel plate 1, L is a length of the third side 31 in the second direction, W is a distance between two connection points between the two fourth side 32 and the first side 11 in the second direction, and θ is an included angle between the third side 31 and the fourth side 32. The second direction is the same as the thickness direction of the first steel sheet 1, and is specifically shown by an arrow B in fig. 4.
The structural parameters of the clamping groove 4 are matched with the structural parameters of the protruding block 3, so that after the protruding block 3 is clamped in the clamping groove 4, the first side 11 of the first steel plate 1 can be completely abutted with the second side of the second steel plate 2.
Further, the structural parameters of the clamping groove 4 and the structural parameters of the protruding block 3 are obtained through finite element analysis; specifically, first, finite element models of the first steel plate 1 and the second steel plate 2 are built, and since L, W and θ both act on the stress suffered by the first steel plate 1, some of the three variables L, W and θ need to be defined as constants, and then the other parameters are controlled to realize orderly change of the shape of the bump 3, so that a stress change curve of the first steel plate 1 is drawn, so as to seek the optimal structural parameters L, W and θ.
Specifically, it is defined that L, W is constant, and by controlling the change of θ, the first steel plate 1 fluctuates with the change of θ, and the maximum stress value fluctuates and rises from the middle to the two sides when θ is between 42 ° and 56 °; the change trend of the second steel plate 2 along with theta is the same as that of the first steel plate 1; thus, it is possible to obtain, by finite element analysis, that when the value of θ is in the vicinity of 48 °, a smaller stress value can be obtained for both the first steel sheet 1 and the second steel sheet 2.
Further, θ is redefined as a constant, and as can be seen by controlling L, W changes, the stress values of the first steel plate 1 and the second steel plate 2 each show a tendency of being approximately U-shaped when the L, W value is gradually increased, so that when the stress values of the first steel plate 1 and the second steel plate 2 are minimum, the corresponding L value is 9mm, and the W value is 4mm.
That is, it is obtained by finite element analysis of the first steel plate 1 and the second steel plate 2, when the thickness values of the first steel plate 1 and the second steel plate 2 are 15mm, the structural parameters L, W and θ are l=9mm, w=4mm, and θ=48°, the stress values to which the first steel plate 1 and the second steel plate 2 are subjected are minimum, and at this time, the clamping effect between the bump 3 and the clamping groove 4 is the best, which is most favorable for the welding operation.
Specifically, the structural parameters of the bump 3 are obtained by performing finite element analysis on the first steel plate 1 and the second steel plate 2 to obtain the structural parameters of the bump 3(Unit mm),/>(Unit mm),/>(In degrees) so that the stress to which the first steel sheet 1 and the second steel sheet 2 are subjected during the joining process can be minimized, and the joining between the first steel sheet 1 and the second steel sheet 2 can be made to have good joining firmness.
The specific welding process of the panel welding method in this embodiment is as follows:
First, according to the thickness values H of the first steel plate 1 and the second steel plate 2, and Calculating the sizes of the protruding block 3 and the clamping groove 4; based on the calculated structural parameters L, W and θ, a bump 3 is formed on the first side 11 of the first steel plate 1, and a groove 4 is formed on the second steel plate 2.
Then, the bump 3 is engaged in the engagement groove 4 so that the first side surface 11 of the first steel plate 1 and the second side surface of the second steel plate 2 are brought into contact with each other to connect the first steel plate 1 and the second steel plate 2 at a time.
Finally, the part of the first side surface 11, on which the protruding block 3 is not arranged, and the part of the second side surface, on which the clamping groove 4 is not arranged, are welded, so that the first steel plate 1 and the second steel plate 2 are connected for the second time, and the connection between the first steel plate 1 and the second steel plate 2 is realized, so that the whole welding process of the first steel plate 1 and the second steel plate 2 is completed.
The foregoing is merely exemplary of the present invention, and those skilled in the art should not be considered as limiting the invention, since modifications may be made in the specific embodiments and application scope of the invention in light of the teachings of the present invention.
Claims (4)
1. A panel welding method for connecting a first steel plate (1) and a second steel plate (2), characterized in that the panel welding method comprises the steps of:
S10: a first side surface (11) of the first steel plate (1) is provided with a lug (3) extending along a first direction, a second side surface of the second steel plate (2) is provided with a clamping groove (4) extending along the first direction, and the first direction is the same as the length direction of the first steel plate (1) or the second steel plate (2);
S20: the convex blocks (3) are clamped into the clamping grooves (4), and the first side surfaces (11) and the second side surfaces are mutually abutted so as to connect the first steel plate (1) and the second steel plate (2) once;
S30: welding the part of the first side surface (11) where the protruding block (3) is not arranged and the part of the second side surface where the clamping groove (4) is not arranged so as to secondarily connect the first steel plate (1) and the second steel plate (2);
in the step S10, the bump (3) is provided on the first side surface (11) of the first steel plate (1) according to the thickness of the first steel plate (1), and the clamping groove (4) is provided on the second side surface of the second steel plate (2) according to the thickness of the second steel plate (2);
The bump (3) is formed with a third side surface (31) and two fourth side surfaces (32), the third side surface (31) is arranged in parallel with the first side surface (11), the two fourth side surfaces (32) are respectively positioned on two opposite sides of the third side surface (31), each fourth side surface (32) is obliquely arranged between the first side surface (11) and the third side surface (31), the bump (3) has structural parameters L, W and θ related to a thickness value H of the first steel plate (1), L is a length of the third side surface (31) in a second direction, W is a distance between two connecting points between the two fourth side surfaces (32) and the first side surface (11) in the second direction, θ is an included angle between the third side surface (31) and the fourth side surface (32), a structural parameter of the clamping groove (4) is matched with a structural parameter of the bump (3), and the thickness value is the same as the first steel plate (1); in the step S10, the extension length of the bump (3) on the first side surface (11) is the same as the length of the first steel plate (1), and the extension length of the clamping groove (4) on the second side surface is the same as the length of the second steel plate (2) and the extension length of the bump (3), respectively;
Obtaining structural parameters of the bump (3) ;
Obtaining structural parameters of the bump (3);
Obtaining structural parameters of the bump (3)。
2. The panel welding method according to claim 1, wherein in said step S10, the thickness of said first steel plate (1) is the same as the thickness of said second steel plate (2).
3. The method for welding a panel according to claim 1, wherein the structural parameters of the clamping groove (4) and the structural parameters of the protruding block (3) are obtained by finite element analysis.
4. A ship, characterized by comprising a first steel plate (1) and a second steel plate (2), wherein the first steel plate (1) and the second steel plate (2) are connected by adopting the panel welding method as claimed in any one of claims 1-3.
Priority Applications (1)
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CN202210635021.5A CN114799603B (en) | 2022-06-06 | 2022-06-06 | Jointed board welding method and ship |
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CN202210635021.5A CN114799603B (en) | 2022-06-06 | 2022-06-06 | Jointed board welding method and ship |
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CN114799603A CN114799603A (en) | 2022-07-29 |
CN114799603B true CN114799603B (en) | 2024-04-30 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11267859A (en) * | 1998-03-17 | 1999-10-05 | Sumitomo Light Metal Ind Ltd | Jointing workpiece and its jointing method, and jointed processing panel |
CN1304816A (en) * | 1999-11-24 | 2001-07-25 | 株式会社日立制作所 | Rotary friction welding method |
CN1668416A (en) * | 2002-07-17 | 2005-09-14 | 国际壳牌研究有限公司 | Forge welding method |
JP2010089155A (en) * | 2008-10-10 | 2010-04-22 | Toyota Industries Corp | Welded structure |
CN201500861U (en) * | 2009-07-13 | 2010-06-09 | 中国船舶重工集团公司第七0九研究所 | Embedded welding structure of thin-walled aluminum alloy chassis |
CN105965150A (en) * | 2016-06-07 | 2016-09-28 | 中国船舶重工集团公司第七二五研究所 | Friction stir welding method for different metal plates |
CN112077433A (en) * | 2020-07-20 | 2020-12-15 | 江西理工大学 | Method for improving mechanical bonding strength of FSW joint |
-
2022
- 2022-06-06 CN CN202210635021.5A patent/CN114799603B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11267859A (en) * | 1998-03-17 | 1999-10-05 | Sumitomo Light Metal Ind Ltd | Jointing workpiece and its jointing method, and jointed processing panel |
CN1304816A (en) * | 1999-11-24 | 2001-07-25 | 株式会社日立制作所 | Rotary friction welding method |
CN1668416A (en) * | 2002-07-17 | 2005-09-14 | 国际壳牌研究有限公司 | Forge welding method |
JP2010089155A (en) * | 2008-10-10 | 2010-04-22 | Toyota Industries Corp | Welded structure |
CN201500861U (en) * | 2009-07-13 | 2010-06-09 | 中国船舶重工集团公司第七0九研究所 | Embedded welding structure of thin-walled aluminum alloy chassis |
CN105965150A (en) * | 2016-06-07 | 2016-09-28 | 中国船舶重工集团公司第七二五研究所 | Friction stir welding method for different metal plates |
CN112077433A (en) * | 2020-07-20 | 2020-12-15 | 江西理工大学 | Method for improving mechanical bonding strength of FSW joint |
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