Auxiliary machining device for inertia friction welding of dissimilar materials and working method of auxiliary machining device

Abstract

The invention provides an inertia friction welding auxiliary machining device for dissimilar materials and a working method of the inertia friction welding auxiliary machining device, and belongs to the technical field of friction welding. The problem that in the prior art, the heat preservation effect cannot be improved at any time of welding according to the process requirement is solved. The device comprises a main shaft side box body, a main shaft side clamp, an external blowing assembly, a main shaft side to-be-welded piece, a movable sliding table box body, a lathe bed, a tailstock side clamp, a tailstock side to-be-welded piece and a heating mechanism, the main shaft side box body is installed on one side of the lathe bed, and the movable sliding table box body is installed on the other side of the lathe bed in a sliding mode through a movable sliding table rail; the main shaft side clamp is installed in the main shaft side box body through the main shaft fixing seat, the external blowing assembly is arranged on the outer side of a welding area of a main shaft side to-be-welded piece, the tailstock side clamp is installed in the movable sliding table box body through the tailstock fixing seat, and the heating mechanism is arranged on the outer side of the welding area of the tailstock side to-be-welded piece. The device is mainly used for protecting the welding area of friction welding.

Description

Technical Field

[0001] The invention belongs to the technical field of friction welding, and in particular relates to an auxiliary processing device for friction welding of workpieces made of different materials and a working method thereof. Background Art

[0002] In recent years, inertia friction welding has the advantages of few process parameters, high stability, low heat input, narrow weld range, and high joint mechanical properties. It has great potential in the industrial field. Many products are used in the aerospace field, etc. The existing inertia friction welding process is: the workpieces to be welded are fixed at the rotating end and the sliding end respectively. When the rotation speed of the rotating end reaches the set value, the drive motor of the spindle is separated from the rotating end, and the sliding end is driven by the hydraulic servo and moves toward the rotating end. Friction heat is generated at the contact interface. Due to the action of friction, the material undergoes plastic deformation at the welding interface, and the temperature of the material gradually increases. When the rotation speed of the rotating end drops to a certain value, the workpiece to be welded begins to be forged. After a certain period of time, the sliding end withdraws, the welding process ends, and the weld is heat treated. After heat treatment, the entire inertia friction welding process is completed. In particular, most dissimilar materials with large performance differences Inertia friction welding is often used for welding. At present, some rotor components in aircraft engines use different types of high-temperature alloys, and each high-temperature alloy has a different service temperature. In order to improve the thrust-to-weight ratio of aircraft engines, more stringent requirements are put forward for their structure and materials. A single material can no longer meet the needs, and research on new dual-alloy materials is imminent. Therefore, inertia friction welding is used to weld aircraft engine components with dissimilar materials. In addition, since the gears in the gear shaft require surface wear resistance according to performance requirements, and the shaft requires better toughness and tensile strength, materials with different carbon equivalents are selected as the gear part and shaft part of the gear shaft, and then the gear shaft is welded by inertia friction welding. In addition, inertia friction welding can also be used for other dissimilar materials with large performance differences, such as aluminum / steel, aluminum / stainless steel, TiAl-based alloy / steel, tungsten alloy / steel, titanium alloy / steel, titanium alloy / stainless steel, etc.

[0003] However, due to the large differences in properties such as thermoplastic temperature, thermal expansion coefficient, and thermal conductivity of dissimilar materials, the welding bonding of the two materials is weak during the welding process. In addition, due to changes in the metallographic structure of the welding zone during the welding process, the mechanical properties of the weld area decrease, resulting in shortcomings such as insufficient strength and toughness of the weld after welding. At the same time, since the weld is exposed to the air after welding, the temperature at the weld will drop sharply, resulting in stress concentration at the weld and oxidation reaction will occur when exposed to the air, and the flash formation after welding is unstable. Based on the above problems, the present invention proposes an inertia friction welding auxiliary processing device. Summary of the invention

[0004] In view of this, the present invention aims to propose an auxiliary processing device for inertia friction welding of dissimilar materials and a working method thereof, so as to solve the problems that the existing inertia friction welding technology cannot perform temperature control during the post-weld heat treatment process, resulting in poor welding connectivity, poor weld strength and toughness, and the weld is exposed to the air, the flash formation after welding is unstable, and the temperature at the weld drops sharply, resulting in stress concentration at the weld.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] An auxiliary processing device for inertia friction welding of dissimilar materials comprises a spindle side box, a spindle side fixture, an external blowing assembly, a spindle side workpiece to be welded, a movable slide box, a bed, a tailstock side fixture, a tailstock side workpiece to be welded and a heating mechanism, wherein the spindle side box is installed on one side of the bed, the movable slide box is slidably installed on the other side of the bed through a movable slide track, the spindle side fixture is installed in the spindle side box through a spindle fixing seat, the spindle side workpiece to be welded is clamped and fixed by the spindle side fixture, the external blowing assembly is arranged on the outside of the welding area of ​​the spindle side workpiece to be welded, the tailstock side fixture is installed in the movable slide box through a tailstock fixing seat, the tailstock side workpiece to be welded is clamped and fixed by the tailstock side fixture, and the heating mechanism is arranged on the outside of the welding area of ​​the tailstock side workpiece to be welded.

[0007] Furthermore, the external blowing assembly includes a driving mechanism, a blowing support, a guide rail, a cylinder, a connecting rod, a semi-ring bracket and a blowing head. The blowing support is connected to the driving mechanism, the fixed end of the cylinder is installed on the blowing support, and the telescopic end is connected to the semi-ring bracket. Guide rails are provided on both sides of the cylinder, and a support plate is installed on the top of the guide rail. Both sides of the semi-ring bracket are connected to the support plate through connecting rods, and a number of blowing heads are evenly distributed in a ring on the inner side of the semi-ring bracket, and the several blowing heads are connected to the semi-ring bracket through the blowing head support.

[0008] Furthermore, the driving mechanism includes a motor and a lead screw, the blowing support is threadedly connected to the lead screw, and the lead screw is connected to the output shaft of the motor and is installed on the bed.

[0009] Furthermore, a direction-adjusting connecting rod is connected to the middle of the blowing head, and the direction-adjusting connecting rod is connected to the inner side of the semi-ring bracket through a locking nut.

[0010] Furthermore, the heating mechanism includes a heating tube and a heating component support seat, one end of the heating tube is installed on the heating component support seat, and the other end is installed in a ring shape on the outside of the welding area of ​​the workpiece to be welded on the tail seat side. The heating component support seat is installed on the movable slide box.

[0011] Furthermore, the heating tube is connected to the heating component support seat through a heating fine-tuning slide.

[0012] Furthermore, the heating fine-tuning slide is slidably mounted on the heating component support seat.

[0013] Furthermore, a temperature measuring component is provided on the heating fine-tuning slide.

[0014] Furthermore, the workpiece to be welded on the spindle side and the workpiece to be welded on the tailstock side are both solid structures.

[0015] A working method for an inertia friction welding auxiliary processing device for dissimilar materials, comprising the following steps:

[0016] Step 1: Before welding, clamp and fix the workpiece on the spindle side with the spindle side fixture, and clamp and fix the workpiece on the tailstock side with the tailstock side fixture;

[0017] Step 2: The spindle in the spindle side box drives the spindle side workpiece to rotate. When the speed reaches the set speed, the spindle stops working, and the sliding table box moves toward the spindle side box, so that the spindle side workpiece to be welded and the tailstock side workpiece to be welded contact, and friction welding begins;

[0018] Step 3: Start welding, and at the same time, spray shielding gas to the welding area through the external blowing assembly;

[0019] Step 4: The heating mechanism starts to heat the welding environment of the workpiece to be welded on the spindle side and the outer side of the workpiece to be welded on the tailstock side to control the temperature or heat it to a temperature higher than the brittle zone temperature, and the weld after welding is kept warm, and then the temperature of the heating mechanism is gradually reduced to room temperature;

[0020] Step 5: After welding is completed, the tailstock side fixture leaves the workpiece to be welded on the tailstock side, and the slide box is moved back to the initial position to complete the entire welding process.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. During the welding process, the present invention controls the temperature through the heating mechanism outside the weld to ensure that the temperature of the surrounding environment of the weld area can reach the plastic temperature of the material when welding different materials, thereby improving the welding connectivity between the two and overcoming the problem of large material differences and weak welding bonding.

[0023] 2. When welding dissimilar materials, the present invention can select and control the heating temperature within a wider range through the heating mechanism provided on the outside of the weld, thereby avoiding the formation of brittle compounds between metals and improving the welding bonding of dissimilar materials.

[0024] 3. The present invention can heat the weld to the temperature generated during welding through the heating mechanism provided on the outside of the weld. Then, after welding, the weld area is kept in a high temperature state through its external heating mechanism, and then the temperature of the heating mechanism is gradually reduced, thereby avoiding the problem of stress concentration at the weld due to the rapid cooling of the weld area in the air, avoiding cracks at the weld, and solving the problem of easy cracking at the weld.

[0025] 4. The present invention can ensure that the weld area is slowly cooled after welding by providing a heating mechanism, which can change the post-weld structure and thus improve the strength and toughness of the weld joint.

[0026] 5. The present invention heats the weld after welding, which can reduce the final heat treatment process in the friction welding process, reduce process steps, and improve work efficiency.

[0027] 6. The present invention provides an external blowing assembly on the outside of the welding area. The external spraying of shielding gas can form a protective layer during the welding process to prevent the metal at the weld from oxidizing with the oxygen in the surrounding air, avoid slag inclusions at the flash and unstable flash forming, thereby improving welding quality, optimizing weld forming, and inhibiting the generation of tiny cracks at the flash, which affects the joint quality.

[0028] 7. The external spraying of protective gas in the present invention can prevent the welding area from being polluted by the external environment, help reduce the pollution of the welding joint surface, keep the welding area clean, and improve the welding quality.

[0029] 8. The present invention can reduce the spark splashing generated during the welding process by spraying a protective gas externally. The inert gas barrier formed around the welding joint can effectively suppress the generation of sparks, improve the safety of the working environment, and provide a good welding environment, reduce the impact of external environmental factors on the welding joint, reduce the factors that may occur during the welding process, and improve the quality and reliability of the welding joint.

[0030] 9. The present invention provides a heating mechanism on the outside of the welding area, which can be used for preheating before welding. This allows the temperature of the welding area to be higher at the beginning of welding, thereby reducing the temperature gradient generated during the welding process, reducing the magnitude of thermal stress, and greatly reducing the risk of cracks caused by higher residual stress in the inner ring due to rapid cooling after welding, thereby improving the quality and reliability of the welded joint.

[0031] 10. The present invention can improve the plasticity and deformation capacity of the welding joint position through preheating before welding, reduce stress concentration during welding, and at the same time promote the release of residual stress in the joint, which can reduce defects during welding, such as the formation of slag inclusions and non-metallic inclusions, thereby improving the quality and reliability of welding and improving the mechanical properties of the welding joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 The structure of the inertia friction welding auxiliary processing device for dissimilar materials according to the present invention is schematically shown. Figure 1 ;

[0034] Figure 2 The structure of the inertia friction welding auxiliary processing device for dissimilar materials according to the present invention is schematically shown. Figure 2 ;

[0035] Figure 3 It is a schematic diagram of the structure of the external blowing assembly;

[0036] Figure 4 This is an enlarged schematic diagram of the installation of the external blowing assembly;

[0037] Figure 5 It is an enlarged schematic diagram of the heating mechanism;

[0038] Figure 6 This is an enlarged schematic diagram of the external blowing assembly.

[0039] 1-spindle side box, 2-spindle fixed seat, 3-spindle side fixture, 4-external blowing assembly, 5-spindle side parts to be welded, 6-movable slide box, 7-bed, 8-movable slide track, 9-heating assembly support seat, 10-heating fine-tuning slide, 11-temperature measuring assembly, 12-heating tube, 13-tailstock side fixture, 14-tailstock fixed seat, 15-tailstock side parts to be welded, 401-motor, 402-screw, 403-blowing support, 404-guide rail, 405-cylinder, 406-connecting rod, 407-semi-ring bracket, 408-blowing head, 409-blowing head support, 410-direction adjustment connecting rod, 411-locking nut. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0041] See also Figure 1-6The present embodiment is described as an auxiliary processing device for friction welding of workpieces of different materials, comprising a spindle side box 1, a spindle side fixture 3, an external blowing assembly 4, a spindle side workpiece to be welded 5, a movable slide box 6, a bed 7, a tailstock side fixture 13, a tailstock side workpiece to be welded 15 and a heating mechanism, wherein the spindle side box 1 is mounted on one side of the bed 7, the movable slide box 6 is slidably mounted on the other side of the bed 7 through a movable slide rail 8, and the spindle side fixture 3 is mounted through a spindle fixed seat 2. Installed in the spindle side box 1, the spindle side workpiece 5 to be welded is clamped and fixed by the spindle side clamp 3, the external blowing assembly 4 is arranged on the outside of the welding area of ​​the spindle side workpiece 5 to be welded, the tailstock side clamp 13 is installed in the movable slide box 6 through the tailstock fixing seat 14, the tailstock side workpiece 15 to be welded is clamped and fixed by the tailstock side clamp 13, the heating mechanism is arranged on the outside of the welding area of ​​the tailstock side workpiece 15 to be welded, and the spindle side workpiece 5 to be welded and the tailstock side workpiece 15 to be welded are both solid structures.

[0042] Before welding, the spindle side workpiece 5 to be welded is clamped and fixed by the spindle side clamp 3, and the tailstock side workpiece 15 to be welded is clamped and fixed by the tailstock side clamp 13, and the external blowing assembly 4 and the heating mechanism are moved to the welding area of ​​the spindle side workpiece 5 to be welded and the tailstock side workpiece 15 to be welded, and the weld is preheated by the heating mechanism, and welding is started. During the welding, protective gas is sprayed into the welding area by the external blowing assembly 4. After the welding is completed, the post-weld joint position is heated and kept warm by the heating mechanism.

[0043] An external blowing component 4 is provided on the outside of the welding area. The external spraying of shielding gas can form a protective layer during the welding process to prevent the metal at the weld from oxidizing with the oxygen in the surrounding air, avoid slag inclusions at the flash and unstable flash forming, thereby improving the welding quality, optimizing the weld forming, and inhibiting the flash cracks. It can prevent the welding area from being polluted by the external environment, help reduce the contamination of the weld joint surface, keep the welding area clean, improve the welding quality, and reduce the spark splashing generated during the welding process. The inert gas barrier formed around the weld joint can effectively inhibit the generation of sparks, improve the safety of the working environment, and provide a good welding environment, reduce the impact of external environmental factors on the weld joint, reduce the factors that may occur during the welding process, and improve the quality and reliability of the weld joint.

[0044] In addition, the welding area is also provided with a heating mechanism. During the welding process, the temperature is controlled by the heating mechanism outside the weld to ensure that the temperature of the environment around the weld area can reach the plastic temperature of the material when welding different materials, thereby improving the welding connectivity between the two, overcoming the problem of large material differences and weak welding bonding, and the heating temperature can be selected and controlled within a wider range, thereby avoiding the formation of brittle compounds between metals and improving the welding bonding of dissimilar materials. It can be heated to the temperature generated during weld welding, and then after the welding is completed, the weld area is kept in a high temperature state through its external heating mechanism, and then the temperature of the heating mechanism is gradually reduced, avoiding the problem of stress concentration at the weld due to rapid cooling of the weld area in the air, avoiding cracks at the weld, solving the problem of easy cracking at the weld, and ensuring that the weld area is slowly cooled after welding, which can change the post-weld structure and thus improve the strength and toughness of the welded joint, and can reduce the final heat treatment step in the friction welding process, reduce the process steps, and improve work efficiency.

[0045] Furthermore, the external blowing assembly 4 includes a driving mechanism, a blowing support 403, a guide rail 404, a cylinder 405, a connecting rod 406, a semi-ring bracket 407 and a blowing head 408. The blowing support 403 is connected to the driving mechanism, the fixed end of the cylinder 405 is installed on the blowing support 403, and the telescopic end is connected to the semi-ring bracket 407. Guide rails 404 are provided on both sides of the cylinder 405, and a support plate is installed on the top of the guide rail 404. Both sides of the semi-ring bracket 407 are connected to the support plate through a connecting rod 406. A number of blowing heads 408 are evenly distributed in a ring on the inner side of the semi-ring bracket 407, and the several blowing heads 408 are connected to the semi-ring bracket 407 through a blowing head support 409.

[0046] Furthermore, the position of the semi-ring bracket 407 in the vertical direction relative to the workpiece 5 to be welded on the main shaft side can be adjusted by extending and retracting the cylinder 405, and the jet position can be adjusted according to the height of the workpiece to be welded. The position of the semi-ring bracket 407 in the horizontal direction relative to the workpiece 5 to be welded on the main shaft side can be adjusted by the driving mechanism. The device can adjust its position according to different workpieces to be welded and different welding areas, thereby improving the applicability of the device.

[0047] Furthermore, the driving mechanism includes a motor 401 and a screw 402, the blowing support 403 is threadedly connected to the screw 402, the screw 402 is connected to the output shaft of the motor 401 and is installed on the bed 7, and the motor 401 is started to drive the screw 402 to rotate. Since the blowing support 403 is threadedly connected to the screw 402, reciprocating motion can be performed, thereby causing the semi-ring bracket 407 to reciprocate and adjust different positions as needed.

[0048] Furthermore, a direction-adjusting connecting rod 410 is connected to the middle part of the blowing head 408, and the direction-adjusting connecting rod 410 is connected to the inner side of the semi-ring bracket 407 through a locking nut 411. By providing the direction-adjusting connecting rod 410, the jet angle of the blowing head 408 can be adjusted, and the most suitable jet angle can be used for jetting, thereby further improving the protective effect of the device on the weld area.

[0049] Furthermore, the heating mechanism includes a heating tube 12 and a heating component support seat 9, one end of the heating tube 12 is installed on the heating component support seat 9, and the other end is installed in a ring shape on the outside of the welding area of ​​the workpiece 15 to be welded on the tail seat side. The heating component support seat 9 is installed on the movable slide box 6. Before and after welding, the heating tube 12 is energized to preheat the welding area and keep it warm after welding.

[0050] In other technical fields, a heating mechanism is provided on the outside of the weld to perform preheating before welding, so that the temperature of the welding area can be higher at the beginning of welding, thereby reducing the temperature gradient generated during welding, reducing the magnitude of thermal stress, and greatly reducing the risk of cracks caused by high residual stress in the inner ring due to rapid cooling after welding, thereby improving the quality and reliability of the welded joint. Preheating before welding can improve the plasticity and deformation capacity of the welded joint position, reduce stress concentration during welding, and promote the release of residual stress in the joint, which can reduce defects during welding, such as the formation of slag inclusions and non-metallic inclusions, thereby improving the quality and reliability of welding and improving the mechanical properties of the welded joint.

[0051] Furthermore, the heating tube 12 is connected to the heating component support seat 9 through the heating fine-tuning slide 10.

[0052] Furthermore, the heating fine-tuning slide 10 is slidably installed on the heating component support seat 9. The heating fine-tuning slide 10 can be adjusted according to different positions of the weld, and the most suitable heating position can be selected for heating, thereby further improving the mechanical properties and toughness of the weld joint.

[0053] Furthermore, a temperature measuring component 11 is provided on the heating fine-tuning slide 10, and the temperature measuring component 11 can monitor the preheating temperature and the temperature required for post-welding insulation in real time to ensure the temperature stability of preheating and insulation.

[0054] A working method for an inertia friction welding auxiliary processing device for workpieces of different materials, comprising the following steps:

[0055] Step 1: Before welding, the workpiece 5 on the spindle side is clamped and fixed by the spindle side fixture 3, and the workpiece 15 on the tailstock side is clamped and fixed by the tailstock side fixture 13;

[0056] Step 2: The spindle in the spindle side box 1 drives the spindle side workpiece 5 to rotate. When the speed reaches the set speed, the spindle stops working, and the movable slide box 6 moves toward the spindle side box 1, so that the spindle side workpiece 5 to be welded and the tailstock side workpiece 15 to be welded contact, and friction welding begins;

[0057] Step 3: Start welding, and at the same time, spray shielding gas to the welding area through the external blowing assembly 4;

[0058] Step 4: The heating mechanism is heated to the temperature generated by the weld, the weld is kept warm after welding, and then the temperature of the heating mechanism is gradually reduced to room temperature;

[0059] Step 5: After the welding is completed, the tailstock side fixture 13 leaves the tailstock side workpiece 15 to be welded, and the sliding table box 6 is moved back to the initial position to complete the entire welding process.

[0060] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. An auxiliary processing device for inertia friction welding of dissimilar materials, characterized in that: The invention comprises a spindle side box (1), a spindle side fixture (3), an external blowing assembly (4), a spindle side workpiece to be welded (5), a movable slide box (6), a bed (7), a tailstock side fixture (13), a tailstock side workpiece to be welded (15) and a heating mechanism, wherein the spindle side box (1) is installed on one side of the bed (7), the movable slide box (6) is slidably installed on the other side of the bed (7) via a movable slide rail (8), and the spindle side fixture (3) is installed via a spindle fixing seat (2 ) is installed in the spindle side box (1), the spindle side workpiece to be welded (5) is clamped and fixed by the spindle side clamp (3), the external blowing assembly (4) is arranged on the outside of the welding area of ​​the spindle side workpiece to be welded (5), the tailstock side clamp (13) is installed in the movable slide box (6) through the tailstock fixing seat (14), the tailstock side workpiece to be welded (15) is clamped and fixed by the tailstock side clamp (13), and the heating mechanism is arranged on the outside of the welding area of ​​the tailstock side workpiece to be welded (15).

2. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 1, characterized in that: The external blowing assembly (4) comprises a driving mechanism, a blowing support (403), a guide rail (404), a cylinder (405), a connecting rod (406), a semi-ring bracket (407) and a blowing head (408). The blowing support (403) is connected to the driving mechanism. The fixed end of the cylinder (405) is mounted on the blowing support (403), and the telescopic end is connected to the semi-ring bracket (407). Guide rails (404) are arranged on both sides of the cylinder (405). A support plate is installed on the top of the guide rail (404). Both sides of the semi-ring bracket (407) are connected to the support plate via a connecting rod (406). A plurality of blowing heads (408) are evenly distributed in a ring shape on the inner side of the semi-ring bracket (407). The plurality of blowing heads (408) are connected to the semi-ring bracket (407) via a blowing head support (409).

3. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 2, characterized in that: The driving mechanism comprises a motor (401) and a lead screw (402); the blowing support (403) is threadedly connected to the lead screw (402); the lead screw (402) is connected to the output shaft of the motor (401) and is mounted on the bed (7).

4. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 2, characterized in that: A direction-adjusting connecting rod (410) is connected to the middle of the blowing head (408), and the direction-adjusting connecting rod (410) is connected to the inner side of the semi-ring bracket (407) via a locking nut (411).

5. The device for friction welding auxiliary processing of dissimilar material workpieces according to claim 1, characterized in that: The heating mechanism comprises a heating tube (12) and a heating component support seat (9); one end of the heating tube (12) is mounted on the heating component support seat (9), and the other end is mounted in a ring shape on the outside of the welding area of ​​the workpiece to be welded (15) on the tailstock side; the heating component support seat (9) is mounted on the movable slide box (6).

6. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 5, characterized in that: The heating tube (12) is connected to the heating component support seat (9) via a heating fine-tuning slide table (10).

7. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 6, characterized in that: The heating fine-tuning slide table (10) is slidably mounted on the heating component support seat (9).

8. The device for inertia friction welding of dissimilar materials according to claim 5, characterized in that: The heating fine-tuning slide table (10) is provided with a temperature measuring component (11).

9. The inertia friction welding auxiliary processing device for dissimilar materials according to claim 1, characterized in that: The spindle-side welded component (5) and the tailstock-side welded component (15) are both solid structures.

10. A working method of the inertia friction welding auxiliary processing device for dissimilar materials according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: Before welding, the workpiece to be welded (5) on the spindle side is clamped and fixed by the spindle side clamp (3), and the workpiece to be welded (15) on the tailstock side is clamped and fixed by the tailstock side clamp (13); Step 2: The spindle in the spindle side housing (1) drives the spindle side workpiece to be welded (5) to rotate. When the speed reaches the set speed, the spindle stops working, and the movable slide housing (6) moves toward the spindle side housing (1) so that the spindle side workpiece to be welded (5) and the tailstock side workpiece to be welded (15) contact each other, and friction welding begins; Step 3: welding begins, and at the same time, a shielding gas is sprayed toward the welding area through an external spray assembly (4); Step 4: The heating mechanism is heated to the temperature generated by the weld, the weld is kept warm after welding, and then the temperature of the heating mechanism is gradually reduced to room temperature; Step 5: After the welding is completed, the tailstock side fixture (13) leaves the tailstock side workpiece to be welded (15), and the sliding table box (6) is moved back to the initial position to complete the entire welding process.

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