A method for mirror polishing of stainless steel weld overlay

Abstract

This invention relates to the field of mirror polishing technology for weld overlays, specifically to a method for mirror polishing stainless steel weld overlays. The method includes: S1, addressing localized misalignment at the T-joints of the longitudinal and circumferential seams of the cylinder by localized smooth transition welding and high-point removal; S2, after confirming the flatness of the surface to be polished, cleaning surface debris; S3, performing rough polishing using an automatic machine, with the cylinder rotating using a roller frame and the arc-shaped end cap rotating using a support turntable, each using an automatic rough polishing device; S4, performing fine polishing manually using an electric angle grinder; and S5, polishing the inner surface of the closure weld seam separately. This invention uses a locking block to lock the first adjusting gear, preventing the polishing belt from vibrating during polishing and affecting the polishing effect. The second rotating wheel ensures that the polishing belt is tensioned regardless of its angle, thus guaranteeing the polishing effect.

Description

Technical Field

[0001] This invention relates to the field of mirror polishing technology for weld overlays, and specifically to a method for mirror polishing stainless steel weld overlays. Background Technology

[0002] The inner surface of the part of the rod reduction furnace that comes into contact with the process materials needs to be polished. The smooth inner wall surface can maintain a high reflectivity, reduce the loss of radiant energy of the silicon rod, and allow more heat to be absorbed by the silicon rod. This helps to maintain the heat conditions required for silicon rod growth, improve product quality, and the smooth surface can reduce the adhesion and accumulation of materials in the furnace, thereby improving production efficiency.

[0003] To prevent corrosion, reduction furnaces require the deposition of a corrosion-resistant stainless steel layer. However, this deposition surface is uneven. Using ordinary polishing methods results in an uneven surface, increasing the contact area and friction between polishing tools (such as polishing wheels and sandpaper) and the furnace's inner wall, thus accelerating tool wear. This not only increases polishing costs but may also affect the consistency of polishing results, as well as the flatness of the furnace's inner wall and heat transfer efficiency.

[0004] Therefore, it is necessary to invent a method for mirror polishing of stainless steel weld overlay to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a method for mirror polishing of stainless steel weld overlay. By setting a polishing wheel that is perpendicular to the polishing direction of the polishing belt, the rotation of the polishing wheel makes the polishing position relatively flat, thereby reducing wear on the polishing belt, reducing vibration, and improving the polishing effect.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A method for mirror polishing of stainless steel weld overlay is provided, comprising the following steps:

[0008] S1. For the local misalignment at the T-joint of the longitudinal and circumferential seams of the cylinder, local smooth transition welding and high point removal are adopted to ensure that the overall flatness of the weld is controlled within 1mm. The subsequent rough polishing will be used for overall treatment.

[0009] S2. After confirming the flatness of the surface to be polished, clean the surface debris to ensure the requirements of rough polishing.

[0010] S3. The machine is used for automatic polishing. The cylinder is rotated by a roller frame and the arc-shaped head is rotated by a support turntable. The head polishing device is used for automatic rough polishing.

[0011] S4. Fine polishing is performed manually using an electric angle grinder. Each of the three rounds of fine polishing is done once with 600#, 800#, and 1000# paper wheels. After fine polishing, wax oil is applied. After three rounds of fine polishing, the roughness should reach Ra0.05. A total of three rounds of fine polishing are required.

[0012] S5. After the inner end cap of the bell jar and the inner cylinder are joined together by welding, the inner surface of the joining weld is polished separately.

[0013] As a preferred embodiment of the stainless steel weld overlay mirror polishing method, in step S3, the bottom end of the end-cap polishing device is connected to a reciprocating sliding polishing component. One side of the polishing component is provided with a polishing belt for polishing the arc-shaped end cap. The inner side of the polishing belt is provided with a second rotating wheel and a first telescopic component for tensioning the polishing belt. The other side of the polishing component is provided with a liftable polishing wheel whose rotation direction is perpendicular to the polishing belt. The first telescopic component is detachably installed on one side of the connecting plate, and the connecting plate can drive the polishing wheel to swing.

[0014] As a preferred embodiment of the mirror polishing method for stainless steel weld overlay, the telescopic end of the first telescopic component is connected to a first rotating wheel for tensioning the polishing abrasive belt, and the other end of the polishing abrasive belt is provided with a third rotating wheel for driving the polishing abrasive belt to rotate. One end of the connecting plate is connected to a first adjusting gear, and the top end of the first adjusting gear is connected to a lifting slider. The lifting slider has a groove inside, and an auxiliary grinding wheel mounting block that can slide along the groove is provided inside the lifting slider. The polishing abrasive wheel is located at the bottom end of the auxiliary grinding wheel mounting block. The first adjusting gear can simultaneously drive the first rotating wheel and the auxiliary grinding wheel mounting block to rotate.

[0015] As a preferred embodiment of the stainless steel weld overlay mirror polishing method, a rack is provided on one side of the lifting slider, a rotatable gear that can mesh with the rack is provided on one side of the auxiliary grinding wheel mounting block, and a first rotating component for driving the polishing grinding wheel to rotate is provided on the outer side of the auxiliary grinding wheel mounting block.

[0016] As a preferred embodiment of the mirror polishing method for stainless steel weld overlay, a mounting frame is provided on one side of the polishing assembly. A second adjusting gear for driving a second rotating wheel to swing is installed inside the mounting frame. A gear shaft that can slide longitudinally is provided between the first adjusting gear and the second adjusting gear. A second gear that can mesh with the first adjusting gear is provided at the top of the gear shaft. A third gear that can mesh with the second adjusting gear is provided at the bottom of the gear shaft. A lifting ring for controlling the up and down sliding of the gear shaft is sleeved in the middle of the gear shaft.

[0017] As a preferred embodiment of the stainless steel weld overlay mirror polishing method, the lifting ring is provided with guide blocks on both sides for controlling the sliding distance of the lifting ring, and the lifting ring is provided with protrusions on both sides that slide inside the guide blocks. One side of the lifting ring protrusion extends to the outside of the guide block and is connected to an ejector block.

[0018] As a preferred embodiment of the stainless steel weld overlay mirror polishing method, the mounting frame is further equipped with a locking block for controlling the first adjusting gear to stop rotating. The end face of the locking block can mesh with the tooth profile of the first adjusting gear. On the other side of the locking block, a plurality of return springs for ejecting the locking block are provided. On one side of the locking block, an ejector rod is also provided. The end of the ejector rod is connected to an adjusting block that can be released by the ejector block descending.

[0019] As a preferred embodiment of the stainless steel weld overlay mirror polishing method, the protrusions at both ends of the lifting ring are also connected to a swing arm for lifting the gear shaft. A support column is provided on one side of the mounting frame. The middle part of the swing arm can rotate around the support column. A second telescopic component for controlling the lifting and lowering of the swing arm is provided at the end of the swing arm.

[0020] As a preferred embodiment of the mirror polishing method for stainless steel weld overlay, the top end of the second gear is provided with a through hole, and a connecting rod for driving the second gear to rotate is slidably arranged inside the through hole. The top end of the mounting frame is provided with an arc-shaped groove for the connecting rod to swing. The other end of the connecting rod is connected to a second rotating assembly, which can drive the connecting rod to rotate synchronously with the second gear.

[0021] The beneficial effects of this invention are as follows: Through the sequential processing of rough polishing and fine polishing, the working surface of the reduction furnace can meet the usage requirements. Specifically, the first adjusting gear simultaneously drives the first rotating wheel and the auxiliary grinding wheel mounting block to rotate, allowing for a larger grinding angle during the initial rough polishing process. By increasing the contact area with the workpiece surface, the remaining protruding weld overlay is removed more quickly and effectively, facilitating smooth subsequent processing of the grinding belt. During subsequent rough polishing, when facing the curved contour of the arc-shaped head, the second gear can be rotated to keep the grinding angle consistently at a suitable position, ensuring consistent polishing results. The locking block locks the first adjusting gear, preventing the polishing belt from vibrating during polishing and affecting the polishing effect. The second rotating wheel ensures that the polishing belt can be tensioned regardless of its angle, thus guaranteeing the polishing effect. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the head polishing device described in this invention.

[0024] Figure 2 This is a schematic diagram of the polishing component structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the main structure of the polishing component of the present invention.

[0026] Figure 4 This is a partial cross-sectional view of the polishing component of the present invention.

[0027] Figure 5 This is a schematic diagram of the rocker arm assembly structure of the present invention.

[0028] Figure 6 This is a schematic diagram of the auxiliary grinding wheel mounting block structure of the present invention.

[0029] Figure 7 This is a schematic diagram of the main structure of the polishing belt of the present invention.

[0030] In the picture:

[0031] 1. End cap polishing device; 2. Support turntable; 3. Arc-shaped end cap; 4. Polishing assembly; 5. Polishing abrasive belt; 6. First telescopic assembly; 7. First rotating wheel; 8. Second rotating wheel; 9. Third rotating wheel; 10. Mounting frame; 11. Polishing wheel; 12. First rotating assembly; 13. Gear one; 14. Slide groove; 15. Rack; 16. First adjusting gear; 17. Gear two; 18. Second adjusting gear; 19. Locking block; 20. Return spring; 21. Ejector rod; 22. Adjusting block; 23. Ejector block; 24. Guide block; 25. Gear three; 26. Lifting ring; 27. Swing rod; 28. Support column; 29. ​​Second telescopic assembly; 30. Connecting plate; 31. Arc-shaped groove; 32. Connecting rod; 33. Second rotating assembly; 34. Gear shaft; 35. Through hole; 36. Auxiliary grinding wheel mounting block; 37. Lifting slider. Detailed Implementation

[0032] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0033] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0034] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] refer to Figures 1 to 7 This invention provides a method for mirror polishing of stainless steel weld overlay, comprising the following steps:

[0037] S1. For the local misalignment at the T-joint of the longitudinal and circumferential seams of the cylinder, local smooth transition welding and high point removal are adopted to ensure that the overall flatness of the weld is controlled within 1mm. The subsequent rough polishing will be used for overall treatment.

[0038] S2. After confirming the flatness of the surface to be polished, clean the surface debris to ensure the requirements of rough polishing.

[0039] S3. The machine is used for automatic polishing. The cylinder is rotated by a roller frame, and the arc-shaped end cap 3 is rotated by a support turntable 2. The end cap polishing device 1 is used for automatic rough polishing.

[0040] S4. Fine polishing is performed manually using an electric angle grinder. Each of the three rounds of fine polishing is done once with 600#, 800#, and 1000# paper wheels. After fine polishing, wax oil is applied. After three rounds of fine polishing, the roughness should reach Ra0.05. A total of three rounds of fine polishing are required.

[0041] S5. After the inner end cap of the bell jar and the inner cylinder are joined together by welding, the inner surface of the joining weld is polished separately.

[0042] The rough polishing process consists of five stages, using 60#, 120#, 180#, 240#, and 400# abrasive belts for five passes, achieving a surface roughness of Ra0.1. The head polishing device 1 mainly comprises a cross-shaped main unit, a grinding head assembly, a cooling circulation system, an electrical control system, a pneumatic system, and a support turntable 2. The workpiece is mounted on the support turntable 2 and rotates. The column and crossbeam are controlled by servo motors, with the crossbeam moving horizontally and vertically. Through CNC program control, the grinding head follows the workpiece contour. Simultaneously, servo rotation technology for the grinding head spindle is employed, making the grinding head more closely conform to the workpiece curve, significantly improving grinding efficiency and polishing effect.

[0043] In step S3, the bottom end of the end-polishing device 1 is connected to a reciprocating sliding polishing component 4. One side of the polishing component 4 is provided with a polishing belt 5 for polishing the arc-shaped end 3. The inner side of the polishing belt 5 is provided with a second rotating wheel 8 and a first telescopic component 6 for tensioning the polishing belt 5. The other side of the polishing component 4 is provided with a height-adjustable polishing wheel 11 whose rotation direction is perpendicular to the polishing belt 5. The first telescopic component 6 can impact the polishing belt 5 from the side, causing the polishing belt 5 to vibrate and break during the polishing process. The polishing wheel 11 cuts the lateral protrusions of the polishing belt 5, effectively ensuring the smooth operation of the polishing belt 5. The polishing wheel 11 is height-adjustable. By controlling and adjusting the height of the polishing wheel 11, the polishing needs of the top or bottom surface of the arc-shaped end 3 can be met. By using the polishing wheel 11 and the polishing belt 5 together, faster polishing efficiency can be achieved in the rough polishing process, thereby saving working time.

[0044] The telescopic end of the first telescopic component 6 is connected to a first rotating wheel 7 for tensioning the polishing abrasive belt 5. The other end of the polishing abrasive belt 5 is provided with a third rotating wheel 9 for driving the polishing abrasive belt 5 to rotate. One end of the connecting plate 30 is connected to a first adjusting gear 16. The top end of the first adjusting gear 16 is connected to a lifting slider 37. The lifting slider 37 has a sliding groove 14 inside. The lifting slider 37 has an auxiliary grinding wheel mounting block 36 that can slide along the sliding groove 14 inside. The polishing abrasive wheel 11 is located at the bottom end of the auxiliary grinding wheel mounting block 36. The first adjusting gear 16 can simultaneously drive the first rotating wheel 7 and the auxiliary grinding wheel mounting block 36 to rotate.

[0045] The synchronous rotation of the first rotating wheel 7 and the auxiliary grinding wheel mounting block 36 ensures that the polishing belt 5 and the polishing wheel 11 are on the same processing plane. By controlling the tilt angle between the belt and the arc-shaped head 3, the contact area with the surface of the arc-shaped head 3 can be adjusted, which helps to control the smoothness of the polishing effect or remove impurities and defects more efficiently. As needed, the polishing wheel 11 can be raised to ensure the final polishing smoothness, thereby achieving a lower roughness.

[0046] A rack 15 is provided on one side of the lifting slider 37, and a rotatable gear 13 that can mesh with the rack 15 is provided on one side of the auxiliary grinding wheel mounting block 36. A first rotating component 12 for driving the polishing grinding wheel 11 to rotate is provided on the outer side of the auxiliary grinding wheel mounting block 36.

[0047] By controlling the rotation of gear 13, the extension distance of polishing wheel 11 is controlled, so that polishing wheel 11 can fit with the surface of arc-shaped head 3 in multiple directions, achieving the purpose of pre-cutting and pre-polishing, thereby achieving a higher polishing effect.

[0048] A mounting frame 10 is provided on one side of the polishing assembly 4. A second adjusting gear 18 for driving the second rotating wheel 8 to swing is installed inside the mounting frame 10. A gear shaft 34 that can slide longitudinally is provided between the first adjusting gear 16 and the second adjusting gear 18. A gear 27 that can mesh with the first adjusting gear 16 is provided at the top of the gear shaft 34. A gear 35 that can mesh with the second adjusting gear 18 is provided at the bottom of the gear shaft 34. A lifting ring 26 for controlling the up and down sliding of the gear shaft 34 is sleeved in the middle of the gear shaft 34.

[0049] The purpose of the second rotating wheel 8 is to keep the polishing belt 5 taut while the first rotating wheel 7 is adjusting its angle. This prevents the polishing belt 5 from falling off the first rotating wheel 7 due to angle adjustment, which would affect the polishing effect. The lifting ring 26 controls the up and down sliding of the gear shaft 34, enabling multi-level control. When the gear shaft 34 moves upward, the second gear 17 idles, and the third gear 25 meshes with the second adjusting gear 18. When the gear shaft 34 is in the center position, the second gear 17 meshes with the first adjusting gear 16, and the third gear 25 meshes with the second adjusting gear 18, achieving synchronous rotation of the first rotating wheel 7 and the second rotating wheel 8. When the gear shaft 34 slides downward, the second gear 17 meshes with the first adjusting gear 16, and the third gear 25 idles, thus controlling the angle of the first rotating wheel 7. This can be achieved through various different forms and combinations.

[0050] The lifting ring 26 has guide blocks 24 on both sides for controlling the sliding distance of the lifting ring 26. The lifting ring 26 has protrusions on both sides that slide inside the guide blocks 24. One side of the lifting ring 26 has a protrusion that extends to the outside of the guide block 24 and is connected to an ejector block 23.

[0051] The guide block 24 is set to control the sliding range and sliding direction of the lifting ring 26, ensuring that the ejector block 23 can accurately push out the adjusting block 22, so that when the angle of the first adjusting gear 16 needs to be adjusted, the locking block 19 can be pushed out in time, ensuring that the first adjusting gear 16 rotates as needed.

[0052] The mounting frame 10 also has a locking block 19 installed inside to control the first adjusting gear 16 to stop rotating. The end face of the locking block 19 can mesh with the tooth profile of the first adjusting gear 16. On the other side of the locking block 19, there are multiple return springs 20 for ejecting the locking block 19. On one side of the locking block 19, there is also an ejector rod 21. The end of the ejector rod 21 is connected to an adjusting block 22 that can be lowered by the ejector block 23 to release the locking block 19.

[0053] By controlling the tilting surfaces and tilting angles of the ejector block 23 and the adjusting block 22, when the gear shaft 34 is in the middle or below the middle, the locking block 19 can be moved away from the first adjusting gear 16. When the gear shaft 34 needs to be in the upper position, the locking block 19 engages with the first adjusting gear 16 through the action of the return spring 20, ensuring that the first rotating wheel 7 is in a locked state during the polishing process, thereby ensuring the polishing effect.

[0054] The protrusions at both ends of the lifting ring 26 are also connected to a swing arm 27 for lifting the gear shaft 34. A support column 28 is provided on one side of the mounting frame 10. The middle part of the swing arm 27 can rotate around the support column 28. A second telescopic component 29 for controlling the lifting and lowering of the swing arm 27 is provided at the end of the swing arm 27.

[0055] The second telescopic component 29 drives the swing arm 27 to swing longitudinally, thereby realizing the need for remote control of the gear shaft 34 to switch between multiple stages, thus allowing for more flexible adjustment of the polishing angle while ensuring the tension of the polishing belt 5.

[0056] The top end of the second gear 17 has a through hole 35, and a connecting rod 32 for driving the second gear 17 to rotate is slidably arranged inside the through hole 35. The top end of the mounting frame 10 has an arc-shaped groove 31 for the connecting rod 32 to swing. The other end of the connecting rod 32 is connected to a second rotating component 33, which can drive the connecting rod 32 to rotate synchronously with the second gear 17.

[0057] The connecting rod 32 drives the second gear 17 to swing synchronously. The sliding setting of the connecting rod 32 in the through hole 35 ensures that the connecting rod 32 can drive the second gear 17 and the third gear 25 to rotate during the height adjustment of the gear shaft 34, thereby ensuring the effect of angle adjustment.

[0058] This invention, through sequential rough polishing and fine polishing, ensures that the working surface of the reduction furnace meets usage requirements. The first adjusting gear 16 simultaneously drives the first rotating wheel 7 and the auxiliary grinding wheel mounting block 36 to rotate. This allows for a larger polishing angle during the initial rough polishing, increasing the contact area with the workpiece surface and more quickly and effectively removing any remaining protruding weld overlay. This facilitates smooth subsequent processing of the polishing belt. During subsequent rough polishing, when facing the curved contour of the arc-shaped end cap 3, the second gear 17 can be rotated to maintain the polishing angle at a suitable position, ensuring consistent polishing results. The locking block 19 locks the first adjusting gear 16 to prevent vibration of the polishing belt 5 during polishing, thus preventing it from affecting the polishing effect. The second rotating wheel 8 ensures that the polishing belt 5 remains tensioned regardless of its angle, guaranteeing the polishing effect.

[0059] It should be stated that the above-described specific embodiments are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to the present invention. However, such variations, as long as they do not depart from the spirit of the present invention, should be within the scope of protection of the present invention. Furthermore, some terminology used in this specification and claims is not limiting, but merely for ease of description.

Claims

1. A method for mirror polishing of stainless steel weld overlay, characterized in that: Includes the following steps: S1. For the local misalignment at the T-joint of the longitudinal and circumferential seams of the cylinder, local smooth transition welding and high point removal are adopted to ensure that the overall flatness of the weld is controlled within 1mm. The subsequent rough polishing will be used for overall treatment. S2. After confirming the flatness of the surface to be polished, clean the surface debris to ensure the requirements of rough polishing. S3. The machine is used for automatic polishing. The cylinder is rotated by a roller frame, and the arc-shaped end cap (3) is rotated by a support turntable (2). The end cap polishing device (1) is used for automatic rough polishing. S4. Fine polishing is performed manually using an electric angle grinder. Each of the three rounds of fine polishing is done once with 600#, 800#, and 1000# paper wheels. After fine polishing, wax oil is applied. After three rounds of fine polishing, the roughness should reach Ra0.

05. A total of three rounds of fine polishing are required. S5. After the inner end cap of the bell jar and the inner cylinder are joined together by welding, the inner surface of the joining weld is polished separately. In step S3, the bottom end of the end polishing device (1) is connected to a reciprocating sliding polishing component (4). One side of the polishing component (4) is provided with a polishing belt (5) for polishing the arc-shaped end (3). The inner side of the polishing belt (5) is provided with a second rotating wheel (8) for tensioning the polishing belt (5) and a first telescopic component (6). The other side of the polishing component (4) is provided with a liftable polishing wheel (11) whose rotation direction is perpendicular to the polishing belt (5). The first telescopic component (6) is detachably installed on one side of the connecting plate (30). The connecting plate (30) can drive the polishing wheel (11) to swing. The telescopic end of the first telescopic component (6) is connected to a first rotating wheel (7) for tensioning the polishing belt (5). The other end of the polishing belt (5) is provided with a third rotating wheel (9) for driving the polishing belt (5) to rotate. One end of the connecting plate (30) is connected to a first adjusting gear (16). The top end of the first adjusting gear (16) is connected to a lifting slider (37). The lifting slider (37) has a groove (14) inside. The lifting slider (37) has an auxiliary grinding wheel mounting block (36) that can slide along the groove (14) inside. The polishing grinding wheel (11) is located at the bottom end of the auxiliary grinding wheel mounting block (36). The first adjusting gear (16) can simultaneously drive the first rotating wheel (7) and the auxiliary grinding wheel mounting block (36) to rotate.

2. The method for mirror polishing of stainless steel weld overlay according to claim 1, characterized in that: A rack (15) is provided on one side of the lifting slider (37), and a rotatable gear (13) that can mesh with the rack (15) is provided on one side of the auxiliary grinding wheel mounting block (36). A first rotating component (12) for driving the polishing wheel (11) to rotate is provided on the outer side of the auxiliary grinding wheel mounting block (36).

3. The method for mirror polishing of stainless steel weld overlay according to claim 1, characterized in that: A mounting frame (10) is provided on one side of the polishing assembly (4). A second adjusting gear (18) for driving the second rotating wheel (8) to swing is installed inside the mounting frame (10). A gear shaft (34) that can slide longitudinally is provided between the first adjusting gear (16) and the second adjusting gear (18). A gear two (17) that can mesh with the first adjusting gear (16) is provided at the top of the gear shaft (34). A gear three (25) that can mesh with the second adjusting gear (18) is provided at the bottom of the gear shaft (34). A lifting ring (26) for controlling the up and down sliding of the gear shaft (34) is sleeved in the middle of the gear shaft (34).

4. The method for mirror polishing of stainless steel weld overlay according to claim 3, characterized in that: The lifting ring (26) is provided with guide blocks (24) on both sides for controlling the sliding distance of the lifting ring (26). The lifting ring (26) is provided with protrusions that slide inside the guide blocks (24) on both sides. One side of the lifting ring (26) protrusion extends to the outside of the guide block (24) and is connected to an ejector block (23).

5. The method for mirror polishing of stainless steel weld overlay according to claim 4, characterized in that: The mounting frame (10) is also equipped with a locking block (19) for controlling the first adjusting gear (16) to stop rotating. The end face of the locking block (19) can mesh with the tooth profile of the first adjusting gear (16). On the other side of the locking block (19), there are multiple return springs (20) for ejecting the locking block (19). On one side of the locking block (19), there is also an ejector rod (21). The end of the ejector rod (21) is connected to an adjusting block (22) that can be released by the ejector block (23) descending.

6. The method for mirror polishing of stainless steel weld overlay according to claim 5, characterized in that: The protrusions at both ends of the lifting ring (26) are also connected to a rocker arm (27) for lifting the gear shaft (34). A support column (28) is provided on one side of the mounting frame (10). The middle part of the rocker arm (27) can rotate around the support column (28). A second telescopic component (29) for controlling the lifting and lowering of the rocker arm (27) is provided at the end of the rocker arm (27).

7. The method for mirror polishing of stainless steel weld overlay according to claim 6, characterized in that: The top of the gear 2 (17) is provided with a through hole (35), and a connecting rod (32) for driving the gear 2 (17) to rotate is slidably arranged inside the through hole (35). The top of the mounting frame (10) is provided with an arc groove (31) for the connecting rod (32) to swing. The other end of the connecting rod (32) is connected to a second rotating component (33), which can drive the connecting rod (32) to rotate synchronously with the gear 2 (17).

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