CN112404694B - Friction stir welding device and method for realizing water cooling of welding-following part - Google Patents
Friction stir welding device and method for realizing water cooling of welding-following part Download PDFInfo
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- CN112404694B CN112404694B CN202011329054.4A CN202011329054A CN112404694B CN 112404694 B CN112404694 B CN 112404694B CN 202011329054 A CN202011329054 A CN 202011329054A CN 112404694 B CN112404694 B CN 112404694B
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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
- B23K20/26—Auxiliary equipment
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Abstract
The invention relates to welding, in particular to a friction stir welding device and a friction stir welding method for realizing local water cooling along with welding. The method comprises the following steps: step one, arranging a first material and a second material, fixing the first material and the second material to enable inner end surfaces to be attached, wherein the height difference between the upper surfaces of the first material and the second material is not more than 0.5 mm; step two, arranging welding equipment, and fixedly connecting a rotating shaft of the welding equipment with the clamping handle; thirdly, in the welding process, the enclosure is positioned on one side of the first material and the second material, which has higher temperature, and the long edge of the enclosure is parallel to the welding direction; and step three, starting the welding equipment to enable the stirring pin to rotate, gradually inserting the stirring pin into the welding position of the first material and the second material, and compressing and deforming the high-temperature-resistant rubber ring after the preset depth is reached. The peak temperature of the material at the side with higher temperature in the welding process is reduced, so that the difference of the temperature fields of the two materials in the welding process is reduced.
Description
Technical Field
The invention relates to welding, in particular to a friction stir welding device and a friction stir welding method for realizing local water cooling along with welding.
Background
The dissimilar materials can combine the advantages of both materials to meet the requirements of some specific situations. For example, aluminum/steel composite structures are an ideal combination of achieving weight reduction and ensuring structural strength in the fields of automobile manufacturing, aerospace, and the like, aluminum/magnesium composite structures are in the fields of 3C electronics, automobiles, and the like, and aluminum/polyester-based composite materials are in the fields of aviation and automobile manufacturing. However, the welding or connection of dissimilar materials often has quite outstanding problems that the welding temperature field and the flow capacity of the materials on two sides are greatly different due to the large difference of the physical and chemical properties of the two materials, so that the formation of a welding seam is difficult, and in addition, interface reaction often occurs between the dissimilar materials to generate harmful substances, such as hard and brittle intermetallic compounds, so that the connection performance of the joint is reduced.
Friction stir welding, which is a solid phase joining method with low heat input, alleviates the above problems, and is an ideal method for achieving dissimilar material welding. However, friction stir welding of dissimilar materials still has the problems of high welding difficulty, difficulty in forming, and the tendency to generate brittle intermetallic compounds at the interface. Taking friction stir welding of aluminum/magnesium alloy as an example, the plastic flow of the aluminum alloy is relatively strong and the temperature of one side of the aluminum alloy is relatively high in the welding process; while the plastic flow capacity of the magnesium alloy is weaker, and the temperature of one side of the magnesium alloy is relatively lower in the welding process. The difference of the plastic flow capacities of the two materials under the action of a welding temperature field is large, and the defects of discontinuous material flow and generation of surface grooves and internal tunnels are easy to occur. In addition, the aluminum/magnesium interface is susceptible to reaction to form brittle intermetallic compounds, which reduce joint strength and toughness.
In order to solve the problem of inconsistent temperature field and flow capacity of friction stir welding of dissimilar metals, the prior art includes a method of adopting stirring head offset. Taking aluminum/magnesium friction stir welding as an example, the welding temperature on the aluminum alloy side is 20 to 30 degrees higher than that on the magnesium alloy side without offset of the stir head. The stirring head is deviated to the magnesium alloy or the aluminum alloy for a certain distance, so that the temperature fields of the materials on the two sides and the migration capacity of the materials on the two sides around the stirring pin can be coordinated, and a better formed joint is obtained. In order to solve the problem that a large amount of brittle intermetallic compounds are easily generated on the interface, a friction stir welding method of immersing the whole material to be welded under water is adopted, and more heat generated by metals on two sides is conducted out in time through cooling water, so that a welding temperature field is reduced, the high-temperature retention time is shortened, and the reaction between Al and Mg is inhibited.
However, the heat generation and plastic rheological capacity of the materials on the two sides are coordinated by simply adopting the offset of the stirring head, and the mechanical property of the obtained joint is lower because the stirring head generates more heat under the friction and stirring action with two metals and has a higher temperature field, so that a serious Al-Mg eutectic reaction is easy to occur at an interface to generate a large amount of brittle intermetallic compounds. The friction stir welding method of immersing the material to be welded in water can conduct heat generated by the action of the stirring head and the material, has a positive effect on inhibiting a large amount of brittle intermetallic compounds generated on an interface, but has a weak effect on coordinating the temperature field and the flowing capacity of the materials on two sides. In addition, the complete immersion of the material in water requires the preparation of a container of a size larger than that of the workpiece, which is cumbersome and complicated, and is not particularly suitable for the welding of large dissimilar composite structural members.
Disclosure of Invention
The invention aims to provide a friction stir welding device and a friction stir welding method for realizing local water cooling along with welding, which are suitable for welding large dissimilar material composite structural members.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a realize along with welding local water-cooled friction stir welding device, includes stirring head, stirring pin, shaft shoulder, go-between I, go-between II and encloses the fender, encloses the go-between I and go-between II that the upper and lower end that keeps off the rear end is equipped with body coupling respectively, the lower extreme rigid coupling shaft shoulder of stirring head, the lower extreme rigid coupling stirring pin of shaft shoulder, the upside of stirring head and the upside of shaft shoulder rotate respectively and connect in go-between I and go-between II.
The friction stir welding device further comprises a high-temperature-resistant rubber ring, the high-temperature-resistant rubber ring is fixedly connected to the lower end of the enclosing baffle, and the stirring needle is located below the high-temperature-resistant rubber ring.
The high-temperature resistant rubber ring extends out of the shaft shoulder to form a space, and the space is 0.3-2 mm.
The high-temperature resistant rubber ring is made of one of silica gel, fluorine gel and perfluoroether.
The upper end of the stirring head is provided with a clamping handle.
This friction stir welding device still includes bearing I and bearing II, the stirring head passes through I rotation of bearing and connects in go-between I, and the shaft shoulder passes through II rotations of bearing and connects in go-between II.
The friction stir welding device also comprises a water inlet part and a water outlet part, wherein the left end and the right end of the enclosure are fixedly connected and communicated with the water inlet part and the water outlet part respectively.
The inside inlet tube and the outlet pipe that extend to the bottom of enclosing is equipped with, and inlet tube and outlet pipe communicate with portion of intaking and portion of going out water respectively.
The friction stir welding device further comprises a water circulation mechanism, wherein the water circulation mechanism is a pump-based mechanism, and the water circulation mechanism conveys water into the water inlet part by using a pump and absorbs water through the water outlet pipe by using the pump to form water circulation.
The method for carrying out friction stir welding by adopting the friction stir welding device for realizing local water cooling along with welding comprises the following steps:
step one, arranging a first material and a second material, fixing the first material and the second material to enable inner end surfaces to be attached, wherein the height difference between the upper surfaces of the first material and the second material is not more than 0.5 mm;
step two, arranging welding equipment, and fixedly connecting a rotating shaft of the welding equipment with the clamping handle;
step three, setting a water source, pumping water in the water source into the enclosure by using a pump through a water inlet pipe, and pumping water in the enclosure back to the water source by using a pump through a water outlet pipe to form water circulation with the water inlet amount equal to the water outlet amount;
fourthly, enabling the enclosure to be positioned on one side with higher temperature in the first material and the second material in the welding process, and enabling the long edge of the enclosure to be parallel to the welding direction;
step five, starting the welding equipment to enable the stirring pin to rotate, gradually inserting the stirring pin into the welding position of the first material and the second material, starting compression deformation of the high-temperature resistant rubber ring after the preset depth is reached, and starting welding operation;
and step six, adjusting the position of the enclosure to change the welding position.
The friction stir welding device for realizing water cooling of the welding-following part has the beneficial effects that:
the local water cooling mode with the enclosure as the main body is adopted, the requirement for a large cooling water container is avoided, the welding device is suitable for welding large structural members, the operation is simple, and the cost is low.
The friction stir welding method adopting the friction stir welding device for realizing water cooling along with local welding has the beneficial effects that:
the peak temperature of the material at the side with higher temperature in the welding process is reduced, so that the difference of temperature fields of the two materials in the welding process is reduced; the temperature of the welding interface is reduced, and the generation of intermetallic compounds is inhibited, so that the joint with good surface and internal forming and excellent mechanical property is obtained.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the overall structure of a friction stir welding device for realizing local water cooling along with welding according to the present invention;
FIG. 2 is a partial schematic view of the first embodiment of the present invention;
FIG. 3 is a second partial schematic structural view of the present invention;
FIG. 4 is a third schematic view of a portion of the present invention;
fig. 5 is a partial structural diagram of the present invention.
In the figure: a first material 1; a second material 2; a stirring head 3; 3-1 parts of a stirring pin; 3-2 parts of shaft shoulder; a bearing I4-1; a bearing II 4-2; 5-1 of a connecting ring; a connecting ring II 5-2; a fence 6; a high temperature resistant rubber ring 7; a water inlet part 8-1; a water outlet part 8-2; a water inlet pipe 9-1; and a water outlet pipe 9-2.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in figures 1 to 5, the friction stir welding device for realizing water cooling of the welded part comprises a stirring head 3, a stirring pin 3-1, a shaft shoulder 3-2, a connecting ring I5-1, a connecting ring II 5-2 and a surrounding baffle 6, wherein the upper end and the lower end of the rear end of the surrounding baffle 6 are respectively provided with the connecting ring I5-1 and the connecting ring II 5-2 which are integrally connected, the lower end of the stirring head 3 is fixedly connected with the shaft shoulder 3-2, the lower end of the shaft shoulder 3-2 is fixedly connected with the stirring pin 3-1, and the upper side of the stirring head 3 and the upper side of the shaft shoulder 3-2 are respectively and rotatably connected in the connecting ring I5-1 and the connecting ring II 5-2. Enclose and keep off 6 interior cooling water that adds, enclose in welding process and keep off 6 one side that is in the higher material in temperature field, utilize and enclose the position that keeps off 6 restriction cooling water, carry out the unilateral cooling, because the material attribute is different when weakening dissimilar material friction stir welding, the difference of both sides material temperature field is great, the difficult problem that influences mechanical properties of welding seam shaping and interface department production brittle intermetallic compound. Meanwhile, the problems that a large water tank is needed in the mode that the large structural member is subjected to underwater friction stir welding, and the large structural member is completely immersed in the water and is complex and difficult to process are solved. Friction stir welding for dissimilar materials, including but not limited to aluminum/magnesium, aluminum/copper, aluminum/steel, aluminum/titanium, aluminum/polyester based composites.
The second embodiment is as follows:
as shown in fig. 1 to 5, the friction stir welding device further comprises a high temperature resistant rubber ring 7, the high temperature resistant rubber ring 7 is fixedly connected to the lower end of the enclosure 6, and the stirring pin 3-1 is located below the high temperature resistant rubber ring 7. The high-temperature resistant rubber ring 7 can be compressed in the welding process, so that the high-temperature resistant rubber ring is tightly contacted with a workpiece, and the outflow of local cooling water is reduced.
The third concrete implementation mode:
as shown in fig. 1 to 5, the high temperature resistant rubber ring 7 extends out of the shaft shoulder 3-2 to form a space, and the space is 0.3-2 mm. This spacing is shown as h in fig. 5. Under the non-working state, the end face of the high-temperature resistant rubber ring 7 extends out of the end face of the shaft shoulder 3-2 by a distance h; in the welding process, due to the elastic action of the high-temperature-resistant rubber ring 7, under the control of constant displacement or constant pressure, the shaft shoulder 3-2 is in close contact with the surface of the material, and meanwhile, the high-temperature-resistant rubber ring 7 can be compressed, so that the high-temperature-resistant rubber ring is in close contact with the surface of the material to be welded, the sealing effect is achieved, and the outflow of cooling water in the enclosure 6 is reduced.
The fourth concrete implementation mode:
as shown in fig. 1 to 5, the material of the high temperature resistant rubber ring 7 is one of silica gel, fluorine gel and perfluoroether.
The fifth concrete implementation mode:
as shown in fig. 1 to 5, the upper end of the stirring head 3 is a clamping handle. The existing welding equipment such as a welding machine is purchased in the market, a clamping handle is connected with a rotating shaft of the welding machine, the welding machine is started after parameters such as rotating speed, welding speed, pressing amount and stirring pin offset are set, and then the welding machine is used for driving a stirring head 3 to rotate so that a shaft shoulder 3-2 and a stirring pin 3-1 start to rotate.
The sixth specific implementation mode:
as shown in figures 1 to 5, the friction stir welding device further comprises a bearing I4-1 and a bearing II 4-2, wherein the stirring head 3 is rotatably connected in the connecting ring I5-1 through the bearing I4-1, and the shaft shoulder 3-2 is rotatably connected in the connecting ring II 5-2 through the bearing II 4-2.
The seventh embodiment:
as shown in figures 1 to 5, the friction stir welding device further comprises a water inlet part 8-1 and a water outlet part 8-2, and the left end and the right end of the enclosure 6 are fixedly connected and communicated with the water inlet part 8-1 and the water outlet part 8-2 respectively. The water inlet part 8-1 and the water outlet part 8-2 are used for being connected with a pipeline for conveying cooling water and extracting the cooling water, the pipeline can be a pipeline on a cooling water circulating mechanism, the cooling water circulating mechanism can be a water cooler or a compressor, and the cooling water flows into the enclosure 6 through the water inlet part 8-1 and the water inlet pipe 9-1 by starting the cooling water circulating mechanism; when the inflow water amount reaches a preset height, the cooling water flows out through the water outlet pipe 9-2 and the water outlet part 8-2 to form a circulation. The cooling water can be extracted using a pumping mechanism already available on the market. The cooling water circulation mechanism and the suction mechanism are set to have equal water flow.
The specific implementation mode is eight:
as shown in figures 1 to 5, a water inlet pipe 9-1 and a water outlet pipe 9-2 extending to the bottom are arranged inside the enclosure 6, and the water inlet pipe 9-1 and the water outlet pipe 9-2 are respectively communicated with a water inlet part 8-1 and a water outlet part 8-2.
The specific implementation method nine:
as shown in fig. 1 to 5, the friction stir welding device further includes a water circulation mechanism, which is a pump-based mechanism that uses a pump to feed water into the water inlet portion 8-1 and uses a pump to suck water through the water outlet pipe 9-2 to form water circulation.
The detailed implementation mode is ten:
as shown in fig. 1 to 5, the method for friction stir welding using the friction stir welding device for realizing water cooling along with welding part comprises the following steps:
step one, arranging a first material 1 and a second material 2, fixing the first material and the second material to enable inner end surfaces to be attached, wherein the height difference between the upper surfaces of the first material and the second material is not more than 0.5 mm;
step two, arranging welding equipment, and fixedly connecting a rotating shaft of the welding equipment with the clamping handle;
step three, a water source is set, so that the water in the water source is pumped into the enclosure 6 by the water inlet pipe 9-1 through the pump, and the water in the enclosure 6 is pumped back to the water source by the water outlet pipe 9-2 through the pump to form water circulation with the water inlet amount equal to the water outlet amount;
fourthly, enabling the enclosure 6 to be positioned on one side with higher temperature in the first material 1 and the second material 2 in the welding process, and enabling the long edge of the enclosure 6 to be parallel to the welding direction;
step five, starting the welding equipment to enable the stirring pin 3-1 to rotate, gradually inserting the stirring pin 3-1 into the welding position of the first material 1 and the second material 2, starting compression deformation of the high-temperature resistant rubber ring 7 after the preset depth is reached, and starting welding operation;
and step six, adjusting the position of the enclosure 6 to change the welding position.
The invention relates to a friction stir welding device for realizing local water cooling along with welding, which has the working principle that:
enclose and keep off 6 interior cooling water that adds, enclose in welding process and keep off 6 one side that is in the higher material in temperature field, utilize and enclose the position that keeps off 6 restriction cooling water, carry out the unilateral cooling, because the material attribute is different when weakening dissimilar material friction stir welding, the difference of both sides material temperature field is great, the difficult problem that influences mechanical properties of welding seam shaping and interface department production brittle intermetallic compound. Meanwhile, the problems that a large water tank is needed in the mode that the large structural member is subjected to underwater friction stir welding, and the large structural member is completely immersed in the water and is complex and difficult to process are solved. Friction stir welding for dissimilar materials, including but not limited to aluminum/magnesium, aluminum/copper, aluminum/steel, aluminum/titanium, aluminum/polyester based composites. The high-temperature resistant rubber ring 7 can be compressed in the welding process, so that the high-temperature resistant rubber ring is tightly contacted with a workpiece, and the outflow of local cooling water is reduced. Under the non-working state, the end face of the high-temperature resistant rubber ring 7 extends out of the end face of the shaft shoulder 3-2 by a distance h; in the welding process, due to the elastic action of the high-temperature-resistant rubber ring 7, under the control of constant displacement or constant pressure, the shaft shoulder 3-2 is in close contact with the surface of the material, and meanwhile, the high-temperature-resistant rubber ring 7 can be compressed, so that the high-temperature-resistant rubber ring is in close contact with the surface of the material to be welded, the sealing effect is achieved, and the outflow of cooling water in the enclosure 6 is reduced. The existing welding equipment such as a welding machine is purchased in the market, a clamping handle is connected with a rotating shaft of the welding machine, the welding machine is started after parameters such as rotating speed, welding speed, pressing amount and stirring pin offset are set, and then the welding machine is used for driving a stirring head 3 to rotate so that a shaft shoulder 3-2 and a stirring pin 3-1 start to rotate. The water inlet part 8-1 and the water outlet part 8-2 are used for being connected with a pipeline for conveying cooling water and extracting the cooling water, the pipeline can be a pipeline on a cooling water circulating mechanism, the cooling water circulating mechanism can be a water cooler or a compressor, and the cooling water flows into the enclosure 6 through the water inlet part 8-1 and the water inlet pipe 9-1 by starting the cooling water circulating mechanism; when the inflow water amount reaches a preset height, the cooling water flows out through the water outlet pipe 9-2 and the water outlet part 8-2 to form a circulation. The cooling water can be extracted using a pumping mechanism already available on the market. The cooling water circulation mechanism and the suction mechanism are set to have equal water flow.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and that various changes, modifications, additions and substitutions which are within the spirit and scope of the present invention and which may be made by those skilled in the art are also within the scope of the present invention.
Claims (10)
1. The utility model provides a realize along with welding local water-cooled friction stir welding device, includes stirring head (3), stirring pin (3-1), shaft shoulder (3-2), go-between I (5-1), go-between II (5-2) and enclose fender (6), its characterized in that: the upper end and the lower end of the rear end of the enclosure (6) are respectively provided with a connecting ring I (5-1) and a connecting ring II (5-2) which are integrally connected, the lower end of the stirring head (3) is fixedly connected with a shaft shoulder (3-2), the lower end of the shaft shoulder (3-2) is fixedly connected with a stirring needle (3-1), and the upper side of the stirring head (3) and the upper side of the shaft shoulder (3-2) are respectively and rotatably connected in the connecting ring I (5-1) and the connecting ring II (5-2); the cooling water is added into the enclosure (6), the enclosure (6) is positioned on one side of a material with a higher temperature field in the welding process, and the enclosure (6) is utilized to limit the position of the cooling water to carry out unilateral cooling.
2. The friction stir welding device for realizing water cooling along with welding according to claim 1, characterized in that: the friction stir welding device further comprises a high-temperature-resistant rubber ring (7), the high-temperature-resistant rubber ring (7) is fixedly connected to the lower end of the enclosing baffle (6), and the stirring needle (3-1) is located below the high-temperature-resistant rubber ring (7).
3. The friction stir welding device for realizing water cooling along with welding according to claim 2, characterized in that: the high-temperature resistant rubber ring (7) extends out of the shaft shoulder (3-2) to form a space, and the space is 0.3-2 mm.
4. The friction stir welding device for realizing water cooling along with welding according to claim 3, wherein: the high-temperature resistant rubber ring (7) is made of one of silica gel, fluorine rubber and perfluoroether.
5. The friction stir welding device for realizing water cooling along with welding according to claim 4, wherein: the upper end of the stirring head (3) is a clamping handle.
6. The friction stir welding device for realizing water cooling along with welding according to claim 5, wherein: the friction stir welding device further comprises a bearing I (4-1) and a bearing II (4-2), wherein the stirring head (3) is rotatably connected into the connecting ring I (5-1) through the bearing I (4-1), and the shaft shoulder (3-2) is rotatably connected into the connecting ring II (5-2) through the bearing II (4-2).
7. The friction stir welding device for realizing water cooling along with welding according to claim 6, wherein: the friction stir welding device also comprises a water inlet part (8-1) and a water outlet part (8-2), wherein the left end and the right end of the enclosure (6) are fixedly connected and communicated with the water inlet part (8-1) and the water outlet part (8-2) respectively.
8. The friction stir welding device for realizing water cooling along with welding according to claim 7, wherein: the enclosing barrier (6) is internally provided with a water inlet pipe (9-1) and a water outlet pipe (9-2) which extend to the bottom, and the water inlet pipe (9-1) and the water outlet pipe (9-2) are respectively communicated with the water inlet part (8-1) and the water outlet part (8-2).
9. The friction stir welding device for realizing water cooling along with welding according to claim 8, wherein: the friction stir welding device also comprises a water circulation mechanism, wherein the water circulation mechanism is a pump-based mechanism, and the water circulation mechanism utilizes a pump to convey water into the water inlet part (8-1) and utilizes a pump to absorb water through the water outlet pipe (9-2) to form water circulation.
10. The method of friction stir welding with a friction stir welding device that is locally water cooled as welded according to claim 9, comprising the steps of:
step one, arranging a first material (1) and a second material (2) and fixing the first material and the second material to enable inner end surfaces to be attached, wherein the height difference between the upper surfaces of the first material and the second material is not more than 0.5 mm;
step two, arranging welding equipment, and fixedly connecting a rotating shaft of the welding equipment with the clamping handle;
step three, a water source is arranged, so that the water in the water source is pumped into the enclosure (6) by the water inlet pipe (9-1) by using a pump, and the water in the enclosure (6) is pumped back to the water source by the water outlet pipe (9-2) by using a pump to form water circulation with the same water inlet amount and water outlet amount;
fourthly, enabling the enclosure (6) to be positioned on one side with higher temperature in the first material (1) and the second material (2) in the welding process, and enabling the long edge of the enclosure (6) to be parallel to the welding direction;
step five, starting the welding equipment to enable the stirring needle (3-1) to rotate, gradually inserting the stirring needle (3-1) into the welding position of the first material (1) and the second material (2), starting compression deformation of the high-temperature resistant rubber ring (7) after the preset depth is reached, and starting welding operation;
and step six, adjusting the position of the enclosure (6) to change the welding position.
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| CN101439439A (en) * | 2008-12-30 | 2009-05-27 | 哈尔滨工业大学 | Friction stir welding method in underwater environment |
| CN103157893A (en) * | 2011-12-16 | 2013-06-19 | 宝山钢铁股份有限公司 | Welding method and welding device with weld joint water-cooled synchronously and from right side |
| DE102012208227A1 (en) * | 2012-05-16 | 2013-11-21 | Robert Bosch Gmbh | Connecting terminals of lithium-ion battery cells, comprises heating components using laser beam for forming molten bath in connecting region set in vibration generator, and solidifying molten bath to form strip-shaped weld by cooling |
| CN103639588B (en) * | 2013-11-11 | 2015-10-07 | 江苏科技大学 | A kind of solid state heat sink device for friction stir welding and welding method thereof |
| DE102018114246A1 (en) * | 2018-06-14 | 2019-12-19 | Schaufler Tooling GmbH & Co. KG | Housing with at least one cooling water channel and method for its production |
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