A radial clamping tool for uniform welding of multiple welds

Abstract

The present invention provides a radial clamping tool for uniformly welding multiple welds, comprising a positioning base (10), a clamping claw (20) and a thrust block (30). The positioning base (10) has a through hole (11) in the middle; a plurality of clamping claws (20) are evenly arranged on one side of the positioning base (10), and the clamping claws (20) are slidably connected to the positioning base (10); the outer wall of the clamping claw (20) is set as a conical structure, the inner wall is set as a micro-tapered structure, and the inner wall of the clamping claw (20) is processed with a plurality of positioning shallow grooves (21); the thrust block (30) has a conical hole (31) in the middle, and the inner wall of the conical hole (31) is slidably connected to the outer wall of the corresponding clamping claw (20). The radial clamping tool is used in the process of simultaneously performing radial friction welding of multiple welds of annular components and shaft / tube components, with accurate positioning, good uniformity and consistency of the microstructure and performance of the welded joint, high welding quality and high efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of solid phase welding, and in particular to a radial clamping tool for uniformly welding multiple welds. Background Art

[0002] Friction welding refers to a solid-state welding method in which, under the action of pressure, the temperature of the interface to be welded and its vicinity is increased through friction, the deformation resistance of the material is reduced, the plasticity is improved, the oxide film on the interface is broken, and the material deforms and flows, and the connection is achieved through diffusion and recrystallization on the interface. Friction welding has the advantages of high weld joint quality, good stability, high welding efficiency, low cost, energy saving and environmental protection. It has become a manufacturing technology that is the focus of research in industries such as the petrochemical industry and the machinery manufacturing industry.

[0003] Friction welding is commonly used for welding structural components such as shafts, tubes, tube / ring, shaft / ring, tube / tube, shaft / disc, shaft / plate, and disk / disc. The main welding methods are axial and radial friction welding. To meet the needs of some special structural components, a multi-pass radial friction welding joint is required. This joint typically involves welding multiple thin-walled rings to the surface of a tube or shaft component using radial friction welding. Currently, this multi-pass radial friction welding joint is primarily achieved through multiple independent welding of a single thin-walled ring, or by welding a wider annular component separately and then machining the resulting multiple thin-walled rings. The method of welding a single thin-walled ring independently multiple times requires multiple welding and machining, which is cumbersome and labor-intensive, and the overall welding time is long and inefficient. It is also impossible to ensure that each radial friction welding is performed under the same conditions and environment, which easily leads to large differences in multiple welds. The method of first welding a ring component with a larger width separately and then forming multiple thin-walled rings through machining, during the friction welding process, the weld is too wide and the welding contact area is large, resulting in large friction torque, and prone to problems such as clamping slippage, resulting in low welding quality and high unqualified rate. At the same time, the excessively wide weld will also cause a large gap between the clamping tool and the ring component due to the sliding, twisting, and deformation of the ring component during the friction welding process, resulting in uneven radial pressure on the ring component, uneven weld structure, poor consistency, and affecting the quality of the weld joint. Summary of the Invention

[0004] In response to the problems existing in the above-mentioned prior art, the purpose of the present invention is to provide a radial clamping tool for uniform welding of multiple welds. The radial clamping tool is used for simultaneous radial friction welding of multiple welds between annular components and shaft / tube components. It can achieve precise positioning of the annular components, avoid radial runout, sliding, twisting and deformation of the annular components during welding, ensure the uniformity and consistency of the organizational properties of the welded joint, and ensure high quality of the welded structure.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A radial clamping tool for uniform welding of multiple welds, characterized in that: it includes a positioning base, a clamping claw and a thrust block, a through hole is provided in the middle of the positioning base and the diameter of the through hole is larger than the outer diameter of the annular component to be welded; a plurality of clamping claws are evenly arranged on the side surface of one side of the positioning base and around the central axis of the through hole, and the clamping claws are slidably connected to the positioning base; the outer wall of the clamping claw is arranged as a conical structure with an outer diameter gradually decreasing from close to the positioning base to away from the positioning base, the inner wall of the clamping claw is arranged as a micro-tapered structure with an outer diameter gradually increasing from close to the positioning base to away from the positioning base, and the inner wall of the clamping claw is sequentially processed with multiple positioning shallow grooves along the axis direction of the clamping claw; the thrust block is arranged at one end of the clamping claw away from the positioning base and a conical hole coaxial with the through hole is provided in the middle of the thrust block, the taper of the conical hole is consistent with the taper of the outer wall of the clamping claw and the inner wall of the conical hole is slidably connected to the corresponding outer wall of the clamping claw.

[0007] Based on the further optimization of the above technical solution, the positioning base is close to the side surface of the clamping claw and the corresponding clamping claws are respectively provided with movable grooves, and the clamping claw is close to the side surface of the positioning base and the corresponding movable grooves are provided with sliding blocks, the sliding blocks are clamped in the corresponding movable grooves and the outer wall of the sliding block is slidably connected to the corresponding side wall of the movable groove, thereby realizing the sliding connection between the clamping claw and the positioning base.

[0008] Based on the further optimization of the above scheme, the side surface of the sliding block close to the through hole and the side surface away from the through hole are respectively connected to the corresponding side walls of the movable slide groove through springs. Firstly, it is convenient to open the clamping claws after welding and to remove the welded parts. Secondly, it provides elastic buffering during the clamping process to avoid pressure damage to the welded parts.

[0009] Based on further optimization of the above solution, the taper of the micro-tapered structure is 0.5-1°.

[0010] Based on further optimization of the above scheme, the number of the positioning shallow grooves (i.e., the positioning shallow grooves arranged in sequence on the same clamping claw) is 2 to 5; the depth of the positioning shallow grooves is 1 to 2 mm, and its width is consistent with the width of the annular component to be welded.

[0011] Based on further optimization of the above solution, the taper of the conical structure is 20 to 70 degrees.

[0012] A radial friction welding method for uniformly welding multiple welds, using the above-mentioned radial clamping tool, is characterized by comprising:

[0013] S01. First, a radial clamping tool is manufactured according to the number and size of the annular components to be friction welded. At the same time, a rotary clamping tool is manufactured according to the size of the shaft / tube components to be welded.

[0014] S02. Then, the annular component and the shaft / tube component blanks to be welded are machined to meet the welding dimensions, and the machined parts to be welded are derusted, deburred, and degreased in sequence;

[0015] S03. Then, the radial clamping tool processed in step S01 is installed on the movable slide of the friction welding, and the rotary clamping tool processed in step S01 is installed on the main shaft of the friction welding. The radial clamping tool is used to clamp the annular component to be welded, and the rotary clamping tool is used to clamp the shaft / tube component to be welded, and they are pre-clamped respectively;

[0016] S04. Then, setting the friction welding parameters on the friction welding control panel, and then starting the friction welding machine to complete the simultaneous friction welding and upset forging pressure-maintaining welding process between the multiple annular components and the shaft / tube components;

[0017] S05. Finally, loosen the radial clamping fixture and the rotary clamping fixture respectively, remove the weldment, and complete the friction welding.

[0018] Based on further optimization of the above solution, the rotary clamping tool adopts an external clamping elastic clamping tool, which is made of any one of 40CrNiMo or 40Cr medium carbon quenched and tempered steel.

[0019] Based on further optimization of the above solution, the outer diameter of the shaft / tube component to be welded is φ41mm~φ160mm; the outer diameter of the annular component to be welded is φ50mm~φ185mm, the width is 3~15mm, and the wall thickness is 4~12mm.

[0020] Based on further optimization of the above scheme, the width of the rotary clamping tool for clamping the shaft / tube components to be welded is 80 to 150 mm, and the rotary clamping tool is installed colinearly with the main shaft center axis of the friction welding machine; the installation method of the radial clamping tool is: the positioning base is fixedly installed on the movable slide of the friction welding machine, the thrust block and the movable slide of the friction welding machine slide relative to each other, and the end of the thrust block away from the clamping claw is fixedly connected to the thrust output end of the oil cylinder of the friction welding machine.

[0021] Based on further optimization of the above scheme, the welding parameters of the friction welding machine are: friction speed 1000r / min~3000r / min, friction pressure 2MPa~8MPa, upsetting speed 500r / min~1500r / min, upsetting pressure 4MPa~15MPa.

[0022] The following are the effects of the above technical solution of the present invention:

[0023] The present application adopts a radial clamping tool consisting of a positioning base, a clamping claw and a thrust block to achieve pre-clamping of multiple annular components and automatically center positioning of multiple annular components during the pre-clamping process. That is, the thrust block is moved along the axial direction to achieve simultaneous and opposite movement of multiple clamping claws. Since the tapered hole and the center axis of the through hole are collinear, while completing the clamping of multiple annular components, their center positioning is also completed (that is, the center axis of the annular component is collinear with the center axis of the through hole and the tapered hole), thereby saving positioning and calibration time and improving the processing efficiency before welding.

[0024] The radial clamping tooling of the present application has a composite structure of "multiple positioning shallow grooves + micro-tapered structure" set on the inner surface of the clamping jaw. Firstly, the positioning shallow grooves are used to position and limit the annular component, so as to avoid the problems of sliding, twisting deformation, radial runout, etc. of the annular component with small width and large thickness in the axial direction of the tooling during friction welding, thereby ensuring the positioning accuracy of multiple welds; secondly, the micro-tapered structure of the inner wall of the clamping jaw, the conical structure of the outer wall of the clamping jaw and the running direction of the thrust block are coordinated to achieve uniform force on the surface of the annular component during welding, ensure the uniformity and consistency of the organization and performance of the multiple welds, thereby realizing synchronous, high-precision and high-strength welding of the multiple welds; thirdly, it is convenient for the installation and positioning of multiple welds, thereby improving welding efficiency, saving welding process and reducing welding cost.

[0025] In addition, compared with the wide weld radial friction welding process, the process of uniformly welding multiple welds using the radial clamping tooling of this application significantly reduces the welding area, reduces the friction torque, and reduces defects such as unwelded parts caused by clamping slippage during welding, effectively improving the welding quality and welding pass rate, and ensuring the uniformity of the weld structure and performance; compared with single weld and multiple welding processes, the welding efficiency of this application is greatly improved, the production cost is low, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the structure of the radial clamping tool in an embodiment of the present invention.

[0027] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0028] Among them, 100, shaft / tube component; 200, annular component; 10, positioning base; 11, through hole; 12, movable slide; 13, spring; 20, clamping claw; 21, positioning shallow groove; 22, sliding block; 30, thrust block; 31, tapered hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] Example 1:

[0031] like Figures 1-2 As shown, a radial clamping tool for uniform welding of multiple welds is characterized in that: it includes a positioning base 10, a clamping claw 20 and a thrust block 30, a through hole 11 is opened in the middle of the positioning base 10, and the diameter of the through hole 11 is larger than the outer diameter of the annular component 200 to be welded; a plurality of clamping claws 20 are evenly arranged on one side of the positioning base 10 and around the central axis of the through hole 11 (the number of the clamping claws 20 is set according to actual conditions, generally 6 to 12), and the clamping claws 20 are slidably connected to the positioning base 10, specifically: a movable slide groove 12 is respectively opened on one side of the positioning base 10 close to the clamping claw 20 and corresponding to the clamping claw 20 (such as Figure 2 As shown, the length of the movable slide 12 is set according to actual conditions and is not overly limited in this embodiment). The clamping claw 20 is close to the side surface of the positioning base 10 and a sliding block 22 is provided corresponding to the movable slide 12. The sliding block 22 is clamped in the corresponding movable slide 12 and the outer wall of the sliding block 22 is slidably connected to the side wall of the corresponding movable slide 12, thereby realizing the sliding connection between the clamping claw 20 and the positioning base 10; the sliding block 22 is close to the side surface of the through hole 11 and the side surface away from the through hole 11 (i.e. Figure 2 The upper and lower sides shown in the figure are connected to the corresponding side walls of the movable slide 12 by springs 13, respectively. First, it is convenient to open the clamping claws 20 after welding and to remove the welded parts. Second, it provides elastic buffering during the clamping process to avoid pressure damage to the welded parts.

[0032] The outer wall of the clamping claw 20 is arranged to be close to the positioning base 10 and away from the positioning base 10 (ie Figure 1 The outer diameter of the tapered structure gradually decreases from left to right as shown, and the taper of the tapered structure is 20 to 70 degrees (generally any one of 30 degrees, 45 degrees or 60 degrees); the inner wall of the clamping claw 20 is set to be close to the positioning base 10 and away from the positioning base 10 (i.e. Figure 1 From left to right as shown), the outer diameter gradually increases in a micro-tapered structure, the taper R of the micro-tapered structure is 0.5-1°, and the inner wall of the clamping jaw 20 is sequentially processed with a plurality of positioning shallow grooves 21 along the axis of the clamping jaw 20 (i.e., the direction of the central axis of the through hole 11), and the number of the positioning shallow grooves 21 (i.e., the positioning shallow grooves 21 arranged in sequence on the same clamping jaw 20) is 2-5 (it should be noted that the number of the positioning shallow grooves 21 is consistent with the number of the annular components 200 processed on the surface of the shaft / tube component 100, as shown in FIG. Figure 1As shown, in this embodiment, the number of annular components 200 is 3, and the number of positioning shallow grooves 21 opened on the same clamping claw 20 is also 3); the depth of the positioning shallow groove 21 is 1 to 2 mm, and its width is consistent with the width of the annular component 200 to be welded.

[0033] The thrust block 30 is arranged at one end of the clamping claw 20 away from the positioning base 10 and a tapered hole 31 coaxial with the through hole 11 is opened in the middle of the thrust block 30. The taper of the tapered hole 31 is consistent with the taper of the outer wall of the clamping claw 20 (such as Figure 1 As shown, the diameter of the tapered hole 31 gradually decreases from left to right, and its taper is 20 to 70 degrees, preferably any one of 30 degrees, 45 degrees or 60 degrees), and the inner wall of the tapered hole 31 is respectively slidably connected with the outer wall of the corresponding clamping claw 20.

[0034] Example 2:

[0035] A radial friction welding method for uniformly welding multiple welds, using the radial clamping fixture described in Example 1, is characterized by:

[0036] For a steel ring with an outer diameter of φ50mm, a width of 3mm, and a wall thickness of 4mm and a 30CrMoSi steel rod with an outer diameter of φ41mm, 5 steel rings need to be welded on the surface of a 30CrMoSi steel rod;

[0037] include:

[0038] S01. First, according to the number and size of the annular components 200 to be friction welded, a radial clamping tool is processed. The number of shallow positioning grooves 21 on the same clamping claw 20 of the radial clamping tool is 5, the groove depth is 1 mm, the width is 3 mm, the taper R of the micro-tapered structure is 0.5°, and the radial clamping tool is made of 40Cr medium carbon tempered steel material; at the same time, according to the size of the shaft / tube component 100 to be welded, a rotary clamping tool is processed. The rotary clamping tool adopts an external clamping elastic clamping tool (the specific structure of the rotary clamping tool is not limited in this embodiment, and the external clamping elastic clamping tool structure commonly used in this field can be used), which is made of 40CrNiMo material.

[0039] S02. Then, the annular component 200 and the shaft / tube component 100 blanks to be welded are machined to meet the welding dimensions, the rust and burrs on the welded parts are removed with sandpaper, and ethyl acetate is used to remove oil stains on the welded parts.

[0040] S03. The radial clamping fixture manufactured in step S01 is then installed on the friction welding machine's sliding platform. The radial clamping fixture is installed as follows: the positioning base 10 is fixedly mounted on the friction welding machine's sliding platform, the thrust block 30 slides relative to the friction welding machine's sliding platform, and the end of the thrust block 30 away from the clamping claw 20 is fixedly connected to the thrust output end of the friction welding machine's oil cylinder. The rotary clamping fixture manufactured in step S01 is then installed on the friction welding machine's main shaft, so that the rotary clamping fixture is collinear with the main shaft axis of the friction welding machine.

[0041] The annular component 200 to be welded is clamped by a radial clamping tool, and the shaft / tube component 100 to be welded is clamped by a rotary clamping tool, and pre-clamped respectively; wherein the width of the shaft / tube component 100 to be welded by the rotary clamping tool is 120 mm.

[0042] S04. Then, set the friction welding parameters on the friction welding control panel, specifically: friction speed 3000r / min, friction pressure 2MPa, upsetting speed 1500r / min, upsetting pressure 4MPa; turn on the friction welding machine, rotate the clamping tool to clamp the 30CrMoSi steel rod, and radial pressure tool to clamp the steel ring. Under the action of radial pressure (i.e., when the oil cylinder is started and the thrust block 30 is applied), the welding surface of the 30CrMoSi steel rod is in close contact with the welding surface of the steel ring, and the main shaft of the friction welding machine starts to rotate and accelerates to the main shaft speed of 3 At 1000r / min, the front ends of the welding surfaces of the 30CrMoSi steel rod and the steel ring contact and rub against each other under the action of the axial friction force of 2MPa. As the metal softens and radial pressure is applied, the metal at the rear end of the welding surface gradually generates heat by friction, so that the entire welding surface is in a thermoplastic state. As the spindle speed drops to the upsetting speed of 1500r / min, the steel ring clamped in the radial pressurizing tooling produces upsetting brake under the radial upsetting pressure of 4MPa, and the pressure is maintained, completing 5 passes of synchronous radial friction welding of the steel ring and the 30CrMoSi steel rod.

[0043] S05. Finally, loosen the radial clamping fixture and the rotary clamping fixture respectively, remove the weldment, and complete the friction welding.

[0044] After removing the welded parts, the shear strength test of the steel rod after radial friction welding was carried out. The test showed that the shear strength of the alloy joints between the steel ring of the five welds and the 30CrMoSi steel rod were 512MPa, 508MPa, 521MPa, 518MPa and 507MPa respectively, and the shear strength change rate was 1.6%.

[0045] Example 3:

[0046] A radial friction welding method for uniformly welding multiple welds, using the radial clamping fixture described in Example 1, is characterized by:

[0047] For a steel ring with an outer diameter of φ185mm, a width of 15mm, and a wall thickness of 12mm and a 30CrMoSi steel pipe with an outer diameter of φ160mm and a wall thickness of 15mm, two steel rings need to be welded on the surface of a 30CrMoSi steel pipe;

[0048] include:

[0049] S01. First, according to the number and size of the annular components 200 to be friction welded, a radial clamping tool is processed. The number of shallow positioning grooves 21 on the same clamping claw 20 of the radial clamping tool is 2, the groove depth is 2 mm, the width is 15 mm, the taper R of the micro-tapered structure is 1°, and the radial clamping tool is made of 40Cr medium carbon quenched and tempered steel material; at the same time, according to the size of the shaft / tube component 100 to be welded, a rotary clamping tool is processed. The rotary clamping tool adopts an external clamping elastic clamping tool (the specific structure of the rotary clamping tool is not limited in this embodiment, and the external clamping elastic clamping tool structure commonly used in this field can be used), which is made of 40Cr medium carbon quenched and tempered steel material.

[0050] S02. Then, the annular component 200 and the shaft / tube component 100 blanks to be welded are machined to meet the welding dimensions, the rust and burrs on the welded parts are removed with sandpaper, and ethyl acetate is used to remove oil stains on the welded parts.

[0051] S03. The radial clamping fixture manufactured in step S01 is then installed on the friction welding machine's sliding platform. The radial clamping fixture is installed as follows: the positioning base 10 is fixedly mounted on the friction welding machine's sliding platform, the thrust block 30 slides relative to the friction welding machine's sliding platform, and the end of the thrust block 30 away from the clamping claw 20 is fixedly connected to the thrust output end of the friction welding machine's oil cylinder. The rotary clamping fixture manufactured in step S01 is then installed on the friction welding machine's main shaft, so that the rotary clamping fixture is collinear with the main shaft axis of the friction welding machine.

[0052] The annular component 200 to be welded is clamped by a radial clamping tool, and the shaft / tube component 100 to be welded is clamped by a rotary clamping tool, and pre-clamped respectively; wherein the width of the shaft / tube component 100 to be welded by the rotary clamping tool is 90 mm.

[0053] S04. Then, set the friction welding parameters on the friction welding control panel, specifically: friction speed 1000r / min, friction pressure 8MPa, upsetting speed 500r / min, upsetting pressure 15MPa; turn on the friction welding machine, rotate the clamping tool to clamp the 30CrMoSi steel pipe, and radial pressure tool to clamp the steel ring. Under the action of radial pressure (i.e., when the oil cylinder is started and the thrust block 30 is applied), the welding surface of the 30CrMoSi steel pipe is in close contact with the welding surface of the steel ring, and the main shaft of the friction welding machine starts to rotate and accelerates to the main shaft speed of 1 At 1000r / min, the front ends of the welding surfaces of the 30CrMoSi steel pipe and the steel ring contact and rub against each other under the action of the axial friction force of 8MPa. As the metal softens and radial pressure is applied, the metal at the rear end of the welding surface gradually generates heat by friction, so that the entire welding surface is in a thermoplastic state. As the spindle speed drops to the upsetting speed of 500r / min, the steel ring clamped in the radial pressurizing tooling produces upsetting brake under the radial upsetting pressure of 15MPa, maintaining pressure, and completing the synchronous radial friction welding of the steel ring and the 30CrMoSi steel pipe in two passes.

[0054] S05. Finally, loosen the radial clamping fixture and the rotary clamping fixture respectively, remove the weldment, and complete the friction welding.

[0055] After removing the welded parts, the shear strength test of the radial friction welded steel pipe was carried out. The test showed that the shear strength of the alloy joint between the steel ring of the two welds and the 30CrMoSi steel pipe was 525MPa and 504MPa respectively, and the shear strength change rate was 2%.

Claims

1. A radial clamping fixture for uniformly welding multiple welds, the radial clamping fixture is used for simultaneously performing radial friction welding of multiple welds between annular components and shaft / tube components, characterized by: The cam is provided with a plurality of clamping claws on one side of the positioning base and the clamping claws are evenly arranged around the central axis of the through hole, and the clamping claws are slidably connected to the positioning base; the outer wall of the clamping claw is provided with a conical structure with an outer diameter gradually decreasing from close to the positioning base to away from the positioning base, the inner wall of the clamping claw is provided with a micro-tapered structure with an outer diameter gradually increasing from close to the positioning base to away from the positioning base, and the inner wall of the clamping claw is processed with a plurality of positioning shallow grooves in sequence along the axis direction of the clamping claw, and the annular component is positioned and limited by the positioning shallow grooves, and the number of positioning shallow grooves is consistent with the number of the annular components to be welded; the thrust block is provided at one end of the clamping claw away from the positioning base and a conical hole coaxial with the through hole is provided in the middle of the thrust block, the taper of the conical hole is consistent with the taper of the outer wall of the clamping claw and the inner wall of the conical hole is slidably connected with the corresponding outer wall of the clamping claw.

2. The radial clamping fixture for uniform welding of multiple welds according to claim 1, characterized in that: The positioning base is close to the side surface of the clamping claw and a movable groove is provided corresponding to the clamping claw. The clamping claw is close to the side surface of the positioning base and a sliding block is provided corresponding to the movable groove. The sliding block is clamped in the corresponding movable groove and the outer wall of the sliding block is slidably connected to the corresponding side wall of the movable groove.

3. The radial clamping fixture for uniform welding of multiple welds according to claim 2, characterized in that: The side surface of the sliding block close to the through hole and the side surface away from the through hole are respectively connected to the corresponding side walls of the movable sliding groove through springs.

4. The radial clamping fixture for uniform welding of multiple welds according to claim 3, characterized in that: The taper of the micro-tapered structure is 0.5-1°.

5. The radial clamping fixture for uniform welding of multiple welds according to claim 3, characterized in that: The number of the shallow positioning grooves is 2 to 5; the depth of the shallow positioning grooves is 1 to 2 mm, and the width thereof is consistent with the width of the annular component to be welded.

6. A radial friction welding method using the radial clamping fixture according to claim 3, characterized in that: include: S01. First, a radial clamping tool is manufactured according to the number and size of the annular components to be friction welded. At the same time, a rotary clamping tool is manufactured according to the size of the shaft / tube components to be welded. S02. Then, the annular component and the shaft / tube component blanks to be welded are machined to meet the welding dimensions, and the machined parts to be welded are derusted, deburred, and degreased in sequence; S03. Then, the radial clamping tool processed in step S01 is installed on the movable slide of the friction welding, and the rotary clamping tool processed in step S01 is installed on the main shaft of the friction welding. The radial clamping tool is used to clamp the annular component to be welded, and the rotary clamping tool is used to clamp the shaft / tube component to be welded, and they are pre-clamped respectively; S04. Then, setting the friction welding parameters on the friction welding control panel, and then starting the friction welding machine to complete the simultaneous friction welding and upset forging pressure-maintaining welding process between the multiple annular components and the shaft / tube components; S05. Finally, loosen the radial clamping fixture and the rotary clamping fixture respectively, remove the weldment, and complete the friction welding.

7. The radial friction welding method according to claim 6, characterized in that: The outer diameter of the shaft / tube component to be welded is φ41mm~φ160mm; the outer diameter of the annular component to be welded is φ50mm~φ185mm, the width is 3~15mm, and the wall thickness is 4~12mm.

8. The radial friction welding method according to claim 6, characterized in that: The welding parameters of the friction welding machine are as follows: friction speed 1000r / min-3000r / min, friction pressure 2MPa-8MPa, upsetting speed 500r / min-1500r / min, upsetting pressure 4MPa-15MPa.

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