A chrome plating removing apparatus for aluminizing

Abstract

The application provides a chromium plating removal device for aluminizing processing, relates to the technical field of chromium plating removal, and comprises a supporting seat, a supporting table and a blocking frame. The blocking frame comprises a hanging disc. The bottom of the hanging disc is provided with three V-shaped plates. The cross sections of the V-shaped plates are all V-shaped, and the V-shaped plates form a prismoid tube. Integral forming is performed on the corners at the top of the three V-shaped plates to form a vertical support. A vertical arm is hingedly connected to one side of the top of the vertical support. An electric push rod is arranged on the other side of the top of the vertical support. The vertical support is T-shaped and horizontally arranged. A push rod is pivotally connected to one end of the electric push rod. The technical key points are as follows: the working substance passes through the inner side of the supporting frame ring, acts on the surface of the workpiece on one hand, and acts on the surface of the V-shaped plate on the other hand, and is rebounded from the surface of the V-shaped plate to the periphery of the bottom of the workpiece, so as to continue to act on the surface of the workpiece between the plurality of vertical rods, and the single chromium plating removal work covers a wide area, which is beneficial to improving the work efficiency.

Description

Technical Field

[0001] This invention relates to the field of chromium plating removal technology, specifically to a chromium plating removal device for aluminum diffusion processing. Background Technology

[0002] Aluminizing is a chemical heat treatment process in which one or more metal atoms diffuse into the surface layer of a metal workpiece. The workpiece is placed in a diffusion agent containing a diffusion metal element, heated to a certain temperature, and held for an appropriate time. The active atoms of the diffusion metal element, produced by the thermal decomposition of the diffusion agent, are adsorbed onto the workpiece surface and diffuse into the surface layer, thereby altering the chemical composition, microstructure, and properties of the workpiece surface. Based on the microstructure of the aluminized layer, it can be divided into hot-dip galvanizing and diffusion-based aluminizing. The compounds or passivation films formed after the metal element diffusion possess high resistance to high-temperature oxidation and corrosion, and can adapt to different environmental substances. For example, aluminizing involves using 316 stainless steel, first plating the surface with nickel, then plating with aluminum using a PVD process, and finally using a vacuum device with high temperature and pressure to diffuse the aluminum layer into the substrate.

[0003] Currently, aluminizing technologies include powder packaging aluminizing, vapor phase aluminizing, and slurry aluminizing. To obtain better aluminized layer quality, various corrosion-resistant elements, such as chromium, silicon, platinum, and rare earth elements, are added to the aluminizing agent. The improved aluminized layer not only has good resistance to high-temperature oxidation but also excellent resistance to hot corrosion.

[0004] Chromium plating typically provides corrosion protection and makes chromium-plated metals more durable. However, like most other surface treatments, wear and tear from prolonged use can damage the chromium plating, often necessitating its removal. Current physical removal methods for chromium plating primarily employ sandblasting and ultrasonic cleaning with specific cleaning agents. Because sandblasting and cleaning agents generally only work in specific directions, in practical applications, the processing position needs to be adjusted based on the time or thickness of the chromium plating to be removed. For multifaceted surfaces, the overall efficiency of chromium plating removal is relatively low. Summary of the Invention

[0005] To overcome the shortcomings of existing methods for removing chromium plating using sandblasting and cleaning agents, which generally only work in specific directions and require adjustments to the processing position based on the removal time or thickness of the chromium plating in practical applications, and which result in low overall efficiency for polyhedrons, this application provides a chromium plating removal device for aluminizing processes. This device utilizes a push rod at one end of an electric push rod to apply pressure to the top of one side of the stand, causing the stand to rotate around its hinge point with the arm. This rotation drives the V-plates to rotate synchronously, changing the inclination angle of the three V-plates. This allows for better control of the rebound angle of the working material impacting the inner surface of the V-plates, satisfying the requirement that the workpiece rebounds from the surface of the V-plates, passes around the bottom of the workpiece, and continues to act on the workpiece surface through multiple uprights. This results in a wide coverage area for a single chromium plating removal operation.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] A chromium plating removal device for aluminum diffusion processing includes a support base, a support platform, and a stop, wherein the support platform is located at the center of the bottom inner side of the support base;

[0008] The retainer is mounted on top of the support base;

[0009] The baffle includes a hanging plate with three V-shaped plates at its bottom. The three V-shaped plates are evenly spaced around the top of the support platform. The cross-section of each V-shaped plate is V-shaped and forms a truncated pyramid-like tube. The workpiece is placed on the top of the support platform. The substance used to clean the chromium plating of the workpiece passes through the inner side of the top of the hanging plate. When it acts on the surface of the workpiece, it impacts the inner side of the three V-shaped plates and bounces back to the bottom of the workpiece.

[0010] In one possible implementation, an integrally formed upright is provided at the corner of the top of the three V-plates. An upright arm is hinged to one side of the top of the upright, and an electric push rod is provided on the other side of the top of the upright. The upright is T-shaped and arranged laterally. One end of the upright arm is machined to the bottom of the hanging plate. One end of the electric push rod is assembled to the bottom of the hanging plate, and the other end is pinned to a push rod. The push rod is supported on the top of the upright. The electric push rod and the V-plate are located on both sides of the upright arm.

[0011] In one possible implementation, the top of one side of the support frame is machined with an inclined surface that slopes to the other side, and the interior of one side of the support frame is machined with a movable groove. One end of the electric push rod is movably connected to the interior of the movable groove, and the two ends of the push rod are respectively attached to the inclined surface on the support frame at the top of the movable groove.

[0012] In one possible implementation, the support platform includes a chassis with multiple uprights machined on its top. The top of the chassis is covered with a protective cover. The multiple uprights are arranged in multiple concentric circles on the top of the chassis, and multiple chassis on each circle are arranged at equal intervals around the center of the chassis. The chassis are bolted to the bottom inner wall of the support base. The bolts are arranged around the center of the chassis and housed inside the protective cover, which covers and protects them.

[0013] In one possible implementation, the height of the circle formed by the plurality of uprights decreases from the periphery of the chassis toward the center, and one end of each of the uprights is machined into a rounded head.

[0014] In one possible implementation, a mounting ring is assembled and connected at the center of the top of the hanging plate. A positioning frame is provided on the inner side of the mounting ring, and a guide frame is provided on the inner side of the positioning frame. The positioning frame includes a support ring, and a positioning ring is machined at the bottom of the support ring. The positioning ring passes through the inside of the mounting ring and is inserted into the inner side of the hanging plate. The support ring is mounted on the top of the mounting ring.

[0015] In one possible implementation, the guide frame includes an overlapping ring A, the bottom of which is integrally formed with a support frame ring. Multiple crossbars are machined on the inner wall of one end of the support frame ring, and one end of each of the multiple crossbars is machined with the same guide sleeve. Multiple notches are machined around the guide sleeve, and the multiple notches are equally spaced around the guide sleeve. The guide sleeve is in the form of a frustum tube.

[0016] In one possible implementation, the bottom of the overlapping ring A is provided with an overlapping ring B, the bottom of the overlapping ring B is integrally formed with an extension ring, the bottom inner wall of the extension ring is machined with a fan ring, and the inside of the fan ring is provided with multiple fan blades to simulate the rotation of the inside of a fan during air flow.

[0017] In one possible implementation, both the bottom surface of the overlapping ring B and the top surface of the support ring are machined with annular grooves, and multiple balls are rolled inside the annular grooves, which support the overlapping ring B to rotate on the top of the support ring.

[0018] In one possible implementation, the diameter of the overlapping ring A is larger than the diameter of the overlapping ring B, and the overlapping ring A is disposed inside the overlapping ring B, so that the support frame ring extends into the inner side of the overlapping ring B.

[0019] The beneficial effects of this application are as follows:

[0020] Firstly, in this solution, by using the push rod at one end of the electric push rod to apply pressure to the top of one side of the stand, the stand rotates around its hinge point with the arm, causing the V-plates to rotate synchronously, thereby changing the tilt angle of the three V-plates. This facilitates control of the rebound angle of the working material impacting the inner surface of the V-plates, meeting the requirement that the workpiece rebounds from the surface of the V-plates and passes through the bottom of the workpiece, continuing to act on the surface of the workpiece between multiple uprights. The single chrome plating removal operation covers a wide area, which is beneficial to improving work efficiency.

[0021] Secondly, in this solution, the working substance passes through the inside of the support ring, and the gas and working substance are guided by the surface of the guide sleeve. When the gas passes through the inside of the fan ring, the extension ring rotates inside the positioning ring by means of multiple balls between the overlapping ring B and the support ring. This facilitates the rotation of the guide sleeve inside the support ring by means of the friction between the overlapping ring A and the overlapping ring B. This avoids the part of the guide sleeve except for the notch and groove from blocking the substance, and ensures that the working medium can be evenly applied to the surface of the workpiece when it is sprayed from the top to the bottom.

[0022] Thirdly, in this solution, multiple uprights are used to support the workpiece, and the circles of different diameters formed by the multiple uprights are set concentrically. The height of the circle at the center increases gradually from the height of the circles around the perimeter, so that the center of the top of the multiple uprights is in a concave state, which facilitates the positioning of the workpiece, reduces the contact area between the support platform and the workpiece, and does not affect the application of the working substance to the bottom surface of the workpiece from between the multiple uprights. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a chromium plating removal device for aluminizing processing according to the present invention in use.

[0024] Figure 2 This is an exploded view of a chromium removal device for aluminizing processing according to the present invention.

[0025] Figure 3 This is a cross-sectional view of a support base and support platform for a chromium plating removal device used in aluminum diffusion processing according to the present invention.

[0026] Figure 4 This invention relates to a chromium removal device for aluminizing processes. Figure 3 Enlarged structural diagram of section A in the middle;

[0027] Figure 5 This is a schematic diagram of the structure of a chrome plating removal device for aluminizing processing according to the present invention;

[0028] Figure 6 This invention relates to a chromium removal device for aluminizing processes. Figure 5 Enlarged diagram of section B;

[0029] Figure 7This is a cross-sectional view of a positioning frame for a chromium plating removal device used in aluminum diffusion processing according to the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of a guide frame for a chromium plating removal device used in aluminum diffusion processing according to the present invention.

[0031] Figure label:

[0032] 1. Guide frame; 101. Overlap ring A; 102. Support frame ring; 103. Guide sleeve; 104. Overlap ring B; 105. Fan ring; 106. Extension ring; 107. Crossbar;

[0033] 2. Positioning frame; 201. Support ring; 202. Positioning ring;

[0034] 3. Stop; 301. Mounting plate; 302. V-plate; 303. Vertical arm; 304. Vertical frame; 305. Electric push rod; 306. Push rod;

[0035] 4. Erection ring; 5. Support base;

[0036] 6. Support platform; 601. Upright pole; 602. Chassis;

[0037] 7. Protective cover; 8. Movable groove; 9. Annular groove; 10. Ball bearing; 11. Notch groove. Detailed Implementation

[0038] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0039] Example 1:

[0040] This embodiment describes the specific structure of a chromium removal device for aluminum diffusion processing, see details below. Figures 1-6 As shown, it includes a support base 5, a support platform 6 located at the center of the bottom inside the support base 5, and a baffle 3 mounted on the top of the support base 5. The baffle 3 includes a hanging plate 301, and the bottom of the hanging plate 301 is provided with three V-shaped plates 302.

[0041] In this process, by arranging three V-shaped plates 302 (each of which has a V-shaped cross-section) at equal intervals around the top of the support platform 6, when the three V-shaped plates 302 form a truncated pyramid tube, the workpiece is placed on the top of the support platform 6. This allows the three V-shaped plates 302 to surround the workpiece. The substance used to clean the chromium plating layer of the workpiece (which can be sand sprayed from a sandblasting machine or cleaning fluid sprayed from an ultrasonic cleaner) passes through the top of the hanging plate 301 and impacts the inner side of the three V-shaped plates 302 while acting on the surface of the workpiece. It then bounces back to the bottom of the workpiece, increasing the coverage area of ​​the workpiece during a single cleaning process.

[0042] like Figure 5As shown, a stand 304 is integrally formed at the corner of the top of the three V-shaped plates 302. A stand arm 303 is hinged to one side of the top of the stand 304. An electric push rod 305 is provided on the other side of the top of the stand 304. One end of the stand arm 303 is machined to the bottom of the hanging plate 301. One end of the electric push rod 305 is assembled to the bottom of the hanging plate 301, and the other end is pinned to a push rod 306.

[0043] The upright frame 304 is T-shaped. By setting the upright frame 304 horizontally, the electric push rod 305 and the V-plate 302 are located on both sides of the upright arm 303. The upright frame 304 can be supported on the top of the upright frame 304 by means of the push rod 306. When the electric push rod 305 is working, it can control the upright frame 304 to rotate around the hinge point between it and the upright arm 303, thereby driving the V-plate 302 to rotate around the hinge point between the upright frame 304 and the upright arm 303.

[0044] Secondly, in order for the electric actuator 305 to stably control the rotation of the support frame 304 around its hinge point with the actuator 306, such as... Figure 6 As shown, the top of one side of the upright 304 is machined with an inclined surface that slopes to the other side. The interior of one side of the upright 304 is machined with a movable groove 8. One end of the electric push rod 305 is movably connected to the interior of the movable groove 8. The two ends of the push rod 306 are respectively attached to the inclined surface on the top of the movable groove 8 on both sides. The two ends of the push rod 306 are connected and supported to the upright 304, which can ensure that the electric push rod 305 can stably push the upright 304.

[0045] like Figures 2 to 4 As shown, the support platform 6 includes a chassis 602, with multiple uprights 601 machined on the top of the chassis 602. The top of the chassis 602 is covered with a protective cover 7, and one end of each of the multiple uprights 601 is machined into a round head.

[0046] In this method, by arranging multiple uprights 601 in multiple circles on the top of the chassis 602 (with the centers of the circles overlapping) and layer by layer, and by arranging multiple chassis 602 on each circle at equal intervals around the center of the chassis 602, when the workpiece is placed on the top of the multiple uprights 601, it can be ensured that the workpiece is supported on all four sides and that the support contact area is small.

[0047] Meanwhile, by making the height of the circle formed by multiple uprights 601 decrease from the periphery of the base 602 towards the center, when the workpiece is placed on top of multiple uprights 601, the workpiece can be moved towards the center by taking advantage of the low height of the center of the top of multiple uprights 601 (which is concave in the center), which helps to ensure the stability of the chromium plating process.

[0048] Secondly, by using bolts to assemble and connect the chassis 602 to the bottom inner wall of the support base 5, and making the bolts surround the center of the chassis 602, when the protective cover 7 is placed on top of the chassis 602, the bolts can be stored inside the protective cover 7 and protected by the protective cover 7.

[0049] Example 2:

[0050] Based on Example 1, this example describes the specific structure of the hanging tray 301, such as... Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a mounting ring 4 is assembled and connected at the center of the top of the hanging plate 301. A positioning frame 2 is provided on the inner side of the mounting ring 4. A guide frame 1 is provided on the inner side of the positioning frame 2. The positioning frame 2 includes a support ring 201 and a positioning ring 202 is machined at the bottom of the support ring 201.

[0051] In this way, by having the positioning ring 202 pass through the inside of the mounting ring 4 and be inserted into the inside of the hanging plate 301, while the support ring 201 is mounted on the top of the mounting ring 4, the support ring 201 can be mounted to a certain height, providing sufficient space for the subsequent guide frame 1 to extend into the inside of the support base 5 through the hanging plate 301.

[0052] like Figure 8 As shown, the guide frame 1 includes an overlapping ring A101. A support frame ring 102 is integrally formed at the bottom of the overlapping ring A101. Multiple crossbars 107 are machined on the inner wall of one end of the support frame ring 102. The same guide sleeve 103 (the guide sleeve 103 is in the form of a frustum tube) is machined on one end of the multiple crossbars 107. Multiple notches 11 are machined around the guide sleeve 103. An overlapping ring B104 is provided at the bottom of the overlapping ring A101. An extension ring 106 is integrally formed at the bottom of the overlapping ring B104. A fan ring 105 is machined on the inner wall of the bottom of the extension ring 106. The overlapping ring A101 is located inside the overlapping ring B104, so that the support frame ring 102 extends into the inner side of the overlapping ring B104.

[0053] In this way, multiple notches 11 are arranged at equal intervals around the guide sleeve 103, and multiple fan blades are arranged inside the fan ring 105 to simulate the rotation of the fan inside during air flow. When the chromium plating material passes through the inside of the support ring 102 and passes through the guide sleeve 103, the gas flow can be guided by the surface of the guide sleeve 103. When the gas passes through the inside of the fan ring 105, the extension ring 106 can tend to rotate inside the positioning ring 202. By means of the friction between the overlapping ring A101 and the overlapping ring B104, the guide sleeve 103 is driven to rotate inside the support ring 4, so as to avoid the part of the guide sleeve 103 except for the notches 11 from blocking the material (centrifugal force can be generated during the rotation of the guide sleeve 103, making it easier for the working material to move to all sides and act on the inside of (302)).

[0054] Meanwhile, in order to ensure smooth rotation of the guide sleeve 103 inside the support ring 4, such as Figure 2 and Figure 7 As shown, both the bottom surface of the overlapping ring B104 and the top surface of the support ring 201 are machined with annular grooves 9. Multiple balls 10 are rolled inside the annular grooves 9. By having multiple balls 10 between the overlapping ring B104 and the support ring 201, the overlapping ring B104 can be supported to rotate on the top of the support ring 201.

[0055] In some examples, to facilitate the removal of the support ring 102 from the inside of the extension ring 106 and the unloading of the workpiece from the top of the support platform 6, the diameter of the overlapping ring A101 is set to be larger than the diameter of the overlapping ring B104. When manually removing the support ring 102, the portion of the overlapping ring A101 protruding from the surface of the overlapping ring B104 can provide support for the fingers.

[0056] Specifically, when using this aluminizing process chromium plating removal equipment to remove chromium plating layers:

[0057] First, using a sandblasting machine or ultrasonic cleaner as the main body of the equipment to remove the chromium plating layer, the support frame ring 102 is removed from the inside of the overlapping ring B104 through the overlapping ring A101, so that the multiple uprights 601 on the support platform 6 are exposed inside the support base 5.

[0058] Then, place the workpiece on top of the multiple uprights 601, so that it is located at the center of the top of the support platform 6;

[0059] Next, the support ring 102 is reinstalled inside the overlapping ring B104, and the nozzle of the sandblasting machine or ultrasonic cleaner is inserted into the inside of the support ring 102. When the working material passes through the inside of the support ring 102, it passes through the center of the support ring 102 on the one hand, and guides the flow of gas and working material by means of the surface of the guide sleeve 103 on the other hand. When the gas passes through the inside of the fan ring 105, the extension ring 106 can be rotated inside the positioning ring 202 by means of the multiple balls 10 between the overlapping ring B104 and the support ring 201.

[0060] At the same time, by means of the friction between the overlapping ring A101 and the overlapping ring B104, the guide sleeve 103 can be rotated inside the support ring 4, so as to avoid the part of the guide sleeve 103 except for the notch groove 11 from blocking the material, and ensure that the working medium can be evenly applied to the surface of the workpiece when it is sprayed from the top to the bottom.

[0061] Furthermore, the working material sprayed from the inner perimeter of the support ring 102 towards the bottom impacts the inner side of the V-plate 302 after touching the surface of the workpiece, and bounces off the surface of the V-plate 302, passing through the perimeter of the bottom of the workpiece and between multiple uprights 601 to continue acting on the surface of the workpiece (it is necessary to ensure that the initial spraying force of the working material is sufficient so that it can still achieve the effect of removing the chromium plating layer during the rebound process).

[0062] Meanwhile, in order to control the angle at which the working substance impacts the inner surface of the V-plate 302 and rebounds to the bottom of the workpiece, in actual application, the push rod 306 at one end of the electric push rod 305 applies pressure to the top of one side of the upright 304 (one end of the electric push rod 305 moves inside the movable slot 8), causing the upright 304 to rotate around its hinge point with the upright arm 303, which drives the V-plate 302 to rotate synchronously, thereby changing the tilt angle of the three V-plates 302, which makes it easier to control the rebound angle of the working substance impacting the inner surface of the V-plate 302.

[0063] It is worth noting that, in order to enable batches of workpieces to be continuously processed inside the support base 5, a straight channel can be opened inside the support base 5, and a robotic arm can be used to remove and unload workpieces from the top of multiple uprights 601 inside the support base 5.

[0064] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A chromium removal device for aluminum diffusion processing, comprising a support structure applied to the device, characterized in that, include: Support base (5); A support platform (6) is located at the center of the bottom of the inner side of the support base (5). The support platform (6) includes a chassis (602). The top of the chassis (602) has multiple uprights (601). The multiple uprights (601) are arranged in multiple circles on the top of the chassis (602) in a layered manner. The multiple chassis (602) on each circle are arranged at equal intervals around the center of the chassis (602). The height of the circle formed by the multiple uprights (601) decreases from the periphery of the chassis (602) towards the center. The baffle (3) is mounted on top of the support base (5); The baffle (3) includes a hanging plate (301), and the bottom of the hanging plate (301) is provided with three V-shaped plates (302). The three V-shaped plates (302) are evenly spaced around the top of the support platform (6). The cross-section of the multiple V-shaped plates (302) is V-shaped and forms a truncated pyramid tube. The workpiece is placed on the top of the support platform (6). The substance used to clean the chromium plating layer of the workpiece passes through the top of the hanging plate (301) and impacts the inner side of the three V-plates (302) when it acts on the surface of the workpiece, and bounces back to the bottom of the workpiece. An integral frame (304) is formed at the corner of the top of the three V-shaped plates (302). A vertical arm (303) is hinged to one side of the top of the frame (304), and an electric push rod (305) is provided on the other side of the top of the frame (304). The frame (304) is T-shaped and arranged horizontally. One end of the vertical arm (303) is processed to the bottom of the hanging plate (301). One end of the electric push rod (305) is assembled to the bottom of the hanging plate (301), and the other end is pinned to a push rod (306). The push rod (306) is supported on the top of the frame (304). The electric push rod (305) and the V-shaped plates (302) are located on both sides of the vertical arm (303). The top of one side of the stand (304) is machined with an inclined surface that slopes to the other side, and the interior of one side of the stand (304) is machined with a movable groove (8); wherein, one end of the electric push rod (305) is movably connected to the interior of the movable groove (8), and the two ends of the push rod (306) are respectively attached to the inclined surface on the stand (304) on both sides of the top of the movable groove (8).

2. The chromium plating removal equipment for aluminizing as described in claim 1, characterized in that: The top of the chassis (602) is covered with a protective cover (7); the chassis (602) is bolted to the bottom inner wall of the support base (5), the bolts are around the center of the chassis (602) and housed inside the protective cover (7), and are covered and protected by the protective cover (7).

3. The chromium plating removal equipment for aluminizing as described in claim 2, characterized in that: One end of each of the aforementioned uprights (601) is machined into a rounded head.

4. The chromium plating removal equipment for aluminizing as described in claim 1, characterized in that: A mounting ring (4) is assembled and connected at the center of the top of the hanging plate (301). A positioning frame (2) is provided on the inner side of the mounting ring (4). A guide frame (1) is provided on the inner side of the positioning frame (2). The positioning frame (2) includes a support ring (201). A positioning ring (202) is machined at the bottom of the support ring (201). The positioning ring (202) passes through the inside of the mounting ring (4) and is inserted into the inside of the hanging plate (301), while the support ring (201) is mounted on the top of the mounting ring (4).

5. The chromium plating removal equipment for aluminizing as described in claim 4, characterized in that: The guide frame (1) includes an overlapping ring A (101), and a support frame ring (102) is integrally formed at the bottom of the overlapping ring A (101). Multiple crossbars (107) are processed on the inner wall of one end of the support frame ring (102). The same guide sleeve (103) is processed at one end of the multiple crossbars (107). Multiple notches (11) are processed around the guide sleeve (103). Among them, multiple notches (11) are equally spaced around the guide sleeve (103), and the guide sleeve (103) is in the form of a frustum tube.

6. The chromium plating removal equipment for aluminizing as described in claim 5, characterized in that: The bottom of the overlapping ring A (101) is provided with an overlapping ring B (104), and the bottom of the overlapping ring B (104) is integrally formed with an extension ring (106), and a fan ring (105) is processed on the bottom inner wall of the extension ring (106). The fan ring (105) has multiple fan blades inside, simulating the rotation of the fan's interior during airflow.

7. The chromium plating removal equipment for aluminizing as described in claim 6, characterized in that: The bottom surface of the overlapping ring B (104) and the top surface of the support ring (201) are both machined with annular grooves (9). Multiple balls (10) are rolled inside the annular grooves (9), and the multiple balls (10) support the overlapping ring B (104) to rotate on the top of the support ring (201).

8. The chromium plating removal equipment for aluminizing as described in claim 6, characterized in that: The diameter of the overlapping ring A (101) is larger than the diameter of the overlapping ring B (104). The overlapping ring A (101) is located inside the overlapping ring B (104), so that the support frame ring (102) extends into the inner side of the overlapping ring B (104).

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