CN111151865B - Heterogeneous metal friction stir welding system - Google Patents
Heterogeneous metal friction stir welding system Download PDFInfo
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- CN111151865B CN111151865B CN202010029710.2A CN202010029710A CN111151865B CN 111151865 B CN111151865 B CN 111151865B CN 202010029710 A CN202010029710 A CN 202010029710A CN 111151865 B CN111151865 B CN 111151865B
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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
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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
- B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
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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
- B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—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 using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a heterogeneous metal friction stir welding system which comprises a power device, a mounting bracket and a welding device, wherein the power device is arranged on the mounting bracket, the welding device is arranged on the power device, the welding device comprises an outer shell and two rotating parts, each rotating part comprises a rotating shaft, two rotating holes penetrate through the bottom of the outer shell, the lower end of each rotating shaft extends into the corresponding rotating hole, the power device comprises a connecting shell and two power modules, the power modules are arranged on the outer wall of the connecting shell, the output shafts of the power modules extend into the connecting shell, the connecting shell is communicated with the outer shell, the output shafts of the power modules are in transmission connection with the corresponding rotating shafts, the lower end of one rotating shaft is provided with a preheating head, the lower end of the other rotating shaft is provided with a stirring pin, and the preheating head and the stirring pin extend out of the rotating holes. By adopting the heterogeneous metal friction stir welding system, the strength and toughness of the welding line are ensured.
Description
Technical Field
The invention relates to a welding system, in particular to a heterogeneous metal friction stir welding system.
Background
Friction stir welding is characterized in that a welded material is locally melted by heat generated by friction between a welding tool rotating at a high speed and a workpiece, and when the welding tool moves forwards along a welding interface, the plasticized material flows from the front part to the rear part of the welding tool under the action of the rotating friction force of the welding tool and forms a compact solid-phase welding seam under the extrusion of the welding tool.
Because of different melting points, when the metals of different materials are connected by friction stir welding, the metal with the lower melting point can be softened firstly during friction stir welding, and the metal with the higher melting point can not be directly welded without reaching the temperature required by softening.
Disclosure of Invention
In view of the above, the present invention provides a system for friction stir welding of dissimilar metals, which can ensure the strength and toughness of the weld.
The technical scheme is as follows:
the friction stir welding system for the dissimilar metals is characterized by comprising a power device, a mounting bracket and a welding device, wherein the mounting bracket is vertically arranged, the power device is arranged on the mounting bracket, and the welding device is arranged on the power device;
the welding device comprises an outer shell and two rotating parts, wherein each rotating part comprises a rotating shaft, the rotating shafts are vertically arranged, two rotating holes penetrate through the bottom of the outer shell, the two rotating holes correspond to the two rotating shafts one by one, and the lower ends of the rotating shafts respectively extend into the corresponding rotating holes;
the power device comprises a connecting shell and two power modules, wherein the power modules are both arranged on the outer wall of the connecting shell, output shafts of the two power modules respectively extend into the connecting shell, the connecting shell is communicated with the outer shell, and the connecting shell is fixed at the upper end of the mounting bracket;
the two power modules correspond to the two rotating shafts one by one, output shafts of the power modules are in transmission connection with the corresponding rotating shafts respectively, one preheating heads are installed at the lower ends of the rotating shafts, the other stirring pins are installed at the lower ends of the rotating shafts, and the preheating heads and the stirring pins extend out of the rotating holes.
The effect of adopting above scheme: set up two at the welding part the rotation axis, one the epaxial preheating head of rotation can preheat the higher metal of melting point before the welding, another the epaxial stirring of rotation welds to the high melting point metal sheet and the low melting point metal sheet through preheating, has avoided the influence because of the material of welding metal sheet and the different causes of melting point, the effectual welding effect of guaranteeing the dissimilar metal.
The stirring pin further comprises a friction seat and a stirring head, the friction seat is cylindrical, the friction seat is vertically arranged, and the stirring head is arranged at the center of the lower surface of the friction seat.
The outer shell comprises an upper shell and a lower shell, the upper shell is positioned right above the lower shell, the upper shell and the lower shell are buckled with each other, the upper end of the rotating shaft is respectively installed on the inner wall of the upper shell through a first bearing, the lower end of the rotating shaft is respectively installed in the corresponding rotating holes through a second bearing, and the rotating holes are positioned on the lower shell;
and the outer shell is provided with a connecting channel.
The connecting shell comprises an upper connecting shell and a lower connecting shell, the upper connecting shell is positioned right above the lower connecting shell, the upper connecting shell and the lower connecting shell are buckled with each other, the power modules are respectively installed on the outer walls of the upper connecting shell, the output shafts of the power modules respectively penetrate through the upper connecting shell, and the lower connecting shell is fixed at the upper end of the installing support;
the connecting shell is provided with a butt joint channel, and the connecting channel is communicated with the butt joint channel.
The rotating part further comprises a first belt pulley, the first belt pulley is fixedly sleeved on the corresponding rotating shaft respectively, the power module comprises a speed reducing motor and a second belt pulley, the shell of the speed reducing motor is fixed on the outer wall of the upper connecting shell respectively, the output shaft of the speed reducing motor penetrates through the upper connecting shell respectively, the output shaft of the speed reducing motor vertically extends into the upper connecting shell respectively, and the second belt pulley is fixedly sleeved on the corresponding output shaft of the speed reducing motor respectively;
a belt pulley with No. two belt pulley one-to-ones, a belt pulley with correspond No. two belt pulley covers are equipped with the connecting belt.
The outer wall of the lower part of the lower shell is also provided with a first blind hole and a second blind hole, the first blind hole is communicated with one rotating hole, and the second blind hole is communicated with the other rotating hole;
the friction seat is matched with the first blind hole, the upper part of the friction seat extends into the first blind hole, the lower end of the rotating shaft is provided with threads, the upper end surface of the friction seat is provided with a first screw hole, and the friction seat is in threaded connection with the corresponding rotating shaft through the first screw hole;
the preheating head is matched with the second blind hole, the upper part of the preheating head extends into the second blind hole, a second screw hole is formed in the upper end face of the preheating head, and the preheating head is in threaded connection with the corresponding rotating shaft through the second screw hole;
the lower end face of the preheating head firstly rubs the metal surface with higher melting point in the heterogeneous metal to increase the temperature, and the stirring pin extends into the joint of the heterogeneous plate to stir and rub.
The upper shell and the lower shell are connected through a flange, and the upper connecting shell and the lower connecting shell are connected through a flange.
Has the advantages that: the invention adopts the cooperation of a multi-needle type welding device and a double-power module, the lower end surface of a preheating head rubs against the upper surface of metal with higher melting point to increase the temperature during welding, then a stirring needle extends into the joints of metal plates made of different materials, the lower end surface of a friction seat is tightly propped against the metal plates made of different materials and generates heat through friction, so that the joints of the metal plates made of different materials are softened, the stirring head rotates at high speed to stir, rub and weld the joints of the metal plates made of different materials, and the strength and the toughness of the weld joint are ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a welding apparatus;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is a schematic view of the present invention in use.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 to 6, a friction stir welding system for heterogeneous metals mainly comprises a power device, a mounting bracket 12 and a welding device, wherein the mounting bracket 12 is vertically arranged, the power device is arranged on the mounting bracket 12, and the welding device is arranged on the power device;
the welding device comprises an outer shell 1 and two rotating parts, wherein each rotating part comprises a rotating shaft 2, the rotating shafts 2 are vertically arranged, two rotating holes penetrate through the bottom of the outer shell 1, the two rotating holes correspond to the two rotating shafts 2 one by one, and the lower ends of the rotating shafts 2 respectively extend into the corresponding rotating holes;
the power device comprises a connecting shell 13 and two power modules, the power modules are both installed on the outer wall of the connecting shell 13, output shafts of the two power modules respectively extend into the connecting shell 13, the connecting shell 13 is communicated with the outer shell 1, and the connecting shell 13 is fixed at the upper end of the installing support 12;
two power module and two 2 one-to-one of rotation axis, power module's output shaft respectively with correspond 2 transmission connections of rotation axis, one preheating head 5 is installed to the lower extreme of rotation axis 2, another stirring needle 7 is installed to the lower extreme of rotation axis 2, preheating head 5 with stirring needle 7 all stretches out rotatory hole.
Wherein:
the stirring pin 7 further comprises a friction seat 8 and a stirring head 9, the friction seat 8 is cylindrical, the friction seat 8 is vertically arranged, and the stirring head 9 is arranged at the center of the lower surface of the friction seat 8.
The outer shell 1 comprises an upper shell 3 and a lower shell 4, the upper shell 3 is positioned right above the lower shell 4, the upper shell 3 and the lower shell 4 are buckled with each other, the upper end of the rotating shaft 2 is respectively installed on the inner wall of the upper shell 3 through a first bearing, the lower end of the rotating shaft 2 is respectively installed in the corresponding rotating holes through a second bearing, and the rotating holes are positioned on the lower shell 4;
and a connecting channel is arranged on the outer shell 1.
The connecting shell 13 comprises an upper connecting shell 14 and a lower connecting shell 15, the upper connecting shell 14 is positioned right above the lower connecting shell 15, the upper connecting shell 14 and the lower connecting shell 15 are buckled with each other, the power modules are respectively installed on the outer walls of the upper connecting shell 14, the output shafts of the power modules respectively penetrate through the upper connecting shell 14, and the lower connecting shell 15 is fixed at the upper end of the installing support 12;
the connecting shell 13 is provided with a butt joint channel, and the connecting channel is communicated with the butt joint channel.
The rotating part further comprises a first belt pulley 11, the first belt pulleys 11 are respectively fixedly sleeved on the corresponding rotating shafts 2, the power module comprises a speed reducing motor 16 and a second belt pulley 17, shells of the speed reducing motor 16 are respectively fixed on the outer wall of the upper connecting shell 14, output shafts of the speed reducing motor 16 respectively penetrate through the upper connecting shell 14, output shafts of the speed reducing motor 16 respectively vertically extend into the upper connecting shell 14, and the second belt pulley 17 is respectively fixedly sleeved on the corresponding output shafts of the speed reducing motor 16;
a belt pulley 11 with No. two belt pulleys 17 one-to-one, a belt pulley 11 with correspond No. two belt pulleys 17 cover are equipped with the connecting belt.
The outer wall of the lower part of the lower shell 4 is also provided with a first blind hole and a second blind hole, the first blind hole is communicated with one rotating hole, and the second blind hole is communicated with the other rotating hole;
the friction seat 8 is matched with the first blind hole, the upper part of the friction seat 8 extends into the first blind hole, the lower end of the rotating shaft 2 is provided with a thread, the upper end surface of the friction seat 8 is provided with a first screw hole, and the friction seat 8 is in threaded connection with the corresponding rotating shaft 2 through the first screw hole;
the preheating head 5 is matched with the second blind hole, the upper portion of the preheating head 5 extends into the second blind hole, a second screw hole is formed in the upper end face of the preheating head 5, and the preheating head 5 is in threaded connection with the corresponding rotating shaft 2 through the second screw hole.
The upper housing 3 and the lower housing 4 are connected by a flange, and the upper connecting housing 14 and the lower connecting housing 15 are connected by a flange.
The lower end surface of the preheating head 5 is flush with the lower end surface of the friction seat 8.
When in use, the first metal plate 20 and the second metal plate 21 are cleaned and dried, then the first metal plate 20 and the second metal plate 21 are horizontally spliced, the abutted part of the first metal plate (20) and the second metal plate 21 forms a seam h to be welded, the second metal plate 21 is horizontally arranged on the lower end surface of the preheating head 5, the preheating head 5 is close to the seam h to be welded, the stirring pin 7 extends into the seam h to be welded to respectively drive the rotating shaft 2 to rotate, thereby driving the preheating head 5 and the stirring pin 7 to rotate, enabling the preheating head 5 and the stirring pin 7 to move along the seam h to be welded, and the preheating head 5 is in front of the stirring pin 7, the preheating head 5 preheats the second metal plate 21 close to the seam h to be welded, and then the stirring pin 7 performs friction stir welding on the first metal plate 20 and the second metal plate 21 along the seam h to be welded.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (2)
1. A dissimilar metal friction stir welding system, comprising: the device comprises a power device, a mounting bracket (12) and a welding device, wherein the mounting bracket (12) is vertically arranged, the power device is arranged on the mounting bracket (12), and the welding device is arranged on the power device;
the welding device comprises an outer shell (1) and two rotating parts, wherein each rotating part comprises a rotating shaft (2), the rotating shafts (2) are vertically arranged, two rotating holes penetrate through the bottom of the outer shell (1), the two rotating holes correspond to the two rotating shafts (2) one by one, and the lower ends of the rotating shafts (2) extend into the corresponding rotating holes respectively;
the power device comprises a connecting shell (13) and two power modules, the power modules are mounted on the outer wall of the connecting shell (13), output shafts of the two power modules respectively extend into the connecting shell (13), the connecting shell (13) is communicated with the outer shell (1), and the connecting shell (13) is fixed at the upper end of the mounting bracket (12);
the two power modules correspond to the two rotating shafts (2) one by one, output shafts of the power modules are in transmission connection with the corresponding rotating shafts (2), a preheating head (5) is installed at the lower end of one rotating shaft (2), a stirring pin (7) is installed at the lower end of the other rotating shaft (2), and the preheating head (5) and the stirring pin (7) extend out of the rotating hole;
the stirring needle (7) further comprises a friction seat (8) and a stirring head (9), the friction seat (8) is cylindrical, the friction seat (8) is vertically arranged, and the stirring head (9) is installed at the center of the lower surface of the friction seat (8);
the outer shell (1) comprises an upper shell (3) and a lower shell (4), the upper shell (3) is located right above the lower shell (4), the upper shell (3) and the lower shell (4) are buckled with each other, the upper end of the rotating shaft (2) is mounted on the inner wall of the upper shell (3) through a first bearing, the lower end of the rotating shaft (2) is mounted in the corresponding rotating hole through a second bearing, and the rotating hole is located on the lower shell (4);
a connecting channel is arranged on the outer shell (1);
the connecting shell (13) comprises an upper connecting shell (14) and a lower connecting shell (15), the upper connecting shell (14) is located right above the lower connecting shell (15), the upper connecting shell (14) and the lower connecting shell (15) are buckled with each other, the power modules are respectively installed on the outer wall of the upper connecting shell (14), the output shafts of the power modules respectively penetrate through the upper connecting shell (14), and the lower connecting shell (15) is fixed at the upper end of the mounting bracket (12);
a butt joint channel is arranged on the connecting shell (13), and the connecting channel is communicated with the butt joint channel;
the rotating part further comprises a first belt pulley (11), the first belt pulley (11) is fixedly sleeved on the corresponding rotating shaft (2) respectively, the power module comprises a speed reducing motor (16) and a second belt pulley (17), a shell of the speed reducing motor (16) is fixed on the outer wall of the upper connecting shell (14) respectively, an output shaft of the speed reducing motor (16) penetrates through the upper connecting shell (14) respectively, an output shaft of the speed reducing motor (16) vertically extends into the upper connecting shell (14) respectively, and the second belt pulley (17) is fixedly sleeved on the corresponding output shaft of the speed reducing motor (16) respectively;
the first belt pulley (11) and the second belt pulley (17) are in one-to-one correspondence, and a connecting belt is sleeved on the first belt pulley (11) and the corresponding second belt pulley (17);
the outer wall of the lower part of the lower shell (4) is also provided with a first blind hole and a second blind hole, the first blind hole is communicated with one rotating hole, and the second blind hole is communicated with the other rotating hole;
the friction seat (8) is matched with the first blind hole, the upper part of the friction seat (8) extends into the first blind hole, the lower end of the rotating shaft (2) is provided with threads, the upper end surface of the friction seat (8) is provided with a first screw hole, and the friction seat (8) is in threaded connection with the corresponding rotating shaft (2) through the first screw hole;
the preheating head (5) is matched with the second blind hole, the upper part of the preheating head (5) extends into the second blind hole, a second screw hole is formed in the upper end face of the preheating head (5), and the preheating head (5) is in threaded connection with the corresponding rotating shaft (2) through the second screw hole;
the lower end face of the preheating head (5) firstly rubs the surface of the heterogeneous metal with higher melting point to increase the temperature, and the stirring needle (7) extends into the seam of the heterogeneous plate to stir and rub.
2. The dissimilar metal friction stir welding system of claim 1, wherein: the upper shell (3) is connected with the lower shell (4) through a flange, and the upper connecting shell (14) is connected with the lower connecting shell (15) through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029710.2A CN111151865B (en) | 2020-01-13 | 2020-01-13 | Heterogeneous metal friction stir welding system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010029710.2A CN111151865B (en) | 2020-01-13 | 2020-01-13 | Heterogeneous metal friction stir welding system |
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| CN111151865A CN111151865A (en) | 2020-05-15 |
| CN111151865B true CN111151865B (en) | 2022-03-01 |
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| CN111136377A (en) * | 2020-01-15 | 2020-05-12 | 重庆科技学院 | Multi-needle friction welding stirring head |
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| CN109623128A (en) * | 2018-12-07 | 2019-04-16 | 南京理工大学 | A kind of stirring-head and welding procedure for Solder for Al-Cu Joint Welding dissimilar metal object Hybrid connections |
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2020
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| JP2003048061A (en) * | 2001-08-01 | 2003-02-18 | Mazda Motor Corp | Surface treatment method and surface treatment apparatus |
| JP2003094175A (en) * | 2001-09-20 | 2003-04-02 | Yaskawa Electric Corp | Heating device for method for friction stir welding |
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