Chromium removing equipment for aluminizing processing

Abstract

The invention provides chromium plating removing equipment for aluminizing machining, and relates to the technical field of chromium plating layer removing, the chromium plating removing equipment comprises a supporting seat, a supporting table and a blocking frame, the blocking frame comprises a hanging disc, three V-shaped plates are arranged at the bottom of the hanging disc, the sections of the multiple V-shaped plates are all in a V shape, and the multiple V-shaped plates form a prismatic table-like pipe; a vertical frame is integrally formed at the corners of the tops of the three V-shaped plates, a vertical arm is hinged to one side of the top of the vertical frame, an electric push rod is arranged on the other side of the top of the vertical frame, the vertical frame is in a T shape and is transversely arranged, and a push rod is connected to one end of the electric push rod in a pin joint mode. According to the technical scheme, a working substance penetrates through the inner side of a supporting frame ring, acts on the surface of a workpiece on one hand, impacts the surface of the inner side of a V-shaped plate through the periphery of the workpiece on the other hand, rebounds and acts on the periphery of the bottom of the workpiece through the surface of the V-shaped plate, and therefore the working substance penetrates through the multiple vertical rods to continue acting on the surface of the workpiece; and the working coverage area of single-time chromium coating removal is wide, and the working efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of chromium plating removal, in particular to chromium plating removal equipment for aluminizing processing. Background Art

[0002] Aluminizing is a chemical heat treatment process in which one or more metal atoms penetrate into the surface of a metal workpiece. By placing the metal workpiece in a penetrant containing the infiltrated metal element, heating it to a certain temperature, and maintaining it for an appropriate period of time, the active atoms of the infiltrated metal element produced by the thermal decomposition of the penetrant are adsorbed onto the surface of the workpiece and diffuse into the surface of the workpiece, thereby changing the chemical composition, organization and performance of the surface of the workpiece. According to the organizational structure of the aluminizing layer, it can be divided into hot-dip aluminizing and diffusion aluminizing. The compound or passivation film formed after the infiltration of the metal element has a high resistance to high-temperature oxidation and corrosion, and can adapt to different environmental substances. For example: aluminizing is done by using 316 stainless steel material, nickel-plating the surface, and then aluminum-plating through the PVD process. After plating, the aluminum layer is diffused into the substrate at high temperature and high pressure through vacuum equipment.

[0003] At present, the aluminizing technologies include: powder packaging aluminizing process, vapor phase aluminizing process, slurry aluminizing process, etc. In order to obtain better aluminizing layer quality, various corrosion resistant elements such as chromium, silicon, platinum and rare earth elements are added to the aluminizing agent. The improved aluminizing layer has not only good high temperature oxidation resistance, but also excellent thermal corrosion resistance.

[0004] Chrome plating generally provides corrosion protection and makes the chrome-plated metal more durable. However, like most other surface treatments, wear and tear caused by long-term use may damage the chrome plating, on which basis the chrome plating is generally removed. Existing physical removal of chrome plating mainly uses two methods: sandblasting with a sandblasting machine and ultrasonic cleaning machine using specific cleaning agents. Because sandblasting and cleaning agent flushing generally only work in a specific direction, in actual application, it is necessary to change the position to be processed according to the time or thickness of the chrome plating removal. For polyhedrons, the overall efficiency of removing the chrome plating is low. Summary of the invention

[0005] In order to overcome the problem that the existing methods of removing the chrome-plated layer by sandblasting and washing with cleaning agents generally can only work in a specific direction in the actual application process, it is necessary to change the processed position according to the time or thickness of the chrome-plated layer removal. For polyhedrons, the overall efficiency of removing the chrome-plated layer is low. The embodiment of the present application provides a chrome-plating removal device for aluminizing processing. By utilizing a push rod at one end of an electric push rod to apply pressure on the top of one side of a vertical frame, the vertical frame is rotated around the hinge point with the vertical arm, driving the V-plate to rotate synchronously to change the inclination angle of the three V-plates, so as to facilitate the control of the rebound angle of the working material impacting the inner surface of the V-plate, so as to meet the demand that the working material rebounds from the surface of the V-plate and passes through the bottom of the workpiece around the four sides and passes through multiple vertical rods to continue to act on the surface of the workpiece. A single chrome-plating removal work covers a wide area.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A chrome removal device for aluminizing processing, comprising a support seat, a support platform and a retaining frame, wherein the support platform is arranged at the center of the bottom of the inner side of the support seat;

[0008] The retaining frame is mounted on the top of the supporting seat;

[0009] The retaining frame includes a hanging plate, and three V-plates are arranged at the bottom of the hanging plate. The three V-plates are evenly spaced around the top of the support platform. The cross-sections of the multiple V-plates are V-shaped and form a prism-like tube. The workpiece is placed on the top of the support platform. The material used to clean the chrome-plated layer of the workpiece passes through the inside through the top of the hanging plate. When acting on the surface of the workpiece, it impacts the inner sides of the three V-plates and rebounds to the bottom of the workpiece.

[0010] In a possible implementation, a stand is integrally formed at the corners of the tops of the three V-plates, one side of the top of the stand is hingedly connected to a stand arm, and the other side of the top of the stand is provided with an electric push rod. The stand is T-shaped and arranged horizontally, one end of the stand arm is processed to the bottom of the hanging plate, one end of the electric push rod is assembled and connected to the bottom of the hanging plate, and the other end is pin-connected to a push rod, the push rod is supported on the top of the stand, and the electric push rod and the V-plate are respectively located on both sides of the stand arm.

[0011] In a possible implementation, the top of one side of the stand is processed with a slope inclined to the other side, and the inside of one side of the stand is processed with a movable groove. One end of the electric push rod is movably connected to the inside of the movable groove, and the two ends of the push rod are respectively in contact with the slope on the stand on both sides of the top of the movable groove.

[0012] In one possible implementation, the support platform includes a chassis, a plurality of vertical poles are processed on the top of the chassis, and the top of the chassis is covered with a protective cover. The plurality of vertical poles are arranged in layers in a plurality of circles on the top of the chassis, and the plurality of chassis on each circle are evenly spaced around the center of the chassis. The chassis is assembled and connected to the bottom inner wall of the support seat by bolts. The bolts are arranged around the center of the chassis and are housed on the inner side of the protective cover and covered and protected by the protective cover.

[0013] In a possible implementation, the height of the circle formed by the plurality of uprights decreases from the periphery of the chassis to the center of the circle, and one end of the plurality of uprights is processed into a round 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, a guide frame is provided on the inner side of the positioning frame, the positioning frame includes a support ring, a positioning ring is processed on 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, and the support ring is mounted on the top of the mounting ring.

[0015] In a possible implementation, the guide frame includes a lap ring A, a support frame ring is integrally formed at the bottom of the lap ring A, a plurality of cross bars are processed on the inner wall of one end of the support frame ring, a same guide sleeve is processed at one end of the plurality of cross bars, a plurality of notched grooves are processed around the guide sleeve, the plurality of notched grooves are evenly spaced around the guide sleeve, and the guide sleeve is in a truncated cone tube state.

[0016] In one possible implementation, a lap ring B is provided at the bottom of the lap ring A, and an extension ring is integrally formed at the bottom of the lap ring B. A fan ring is processed at the inner wall of the bottom of the extension ring, and a plurality of fan blades are provided inside the fan ring to simulate the rotation of the fan during air flow.

[0017] In a possible implementation, the bottom surface of the lap ring B and the top surface of the support ring are both machined with annular grooves, a plurality of balls are rollingly connected inside the annular grooves, and the plurality of balls support the lap ring B to rotate on the top of the support ring.

[0018] In a possible implementation, the diameter of the lap ring A is greater than the diameter of the lap ring B, and the lap ring A is arranged inside the lap ring B, so that the support frame ring extends into the inner side of the lap ring B.

[0019] The beneficial effects of this application are:

[0020] First, in this scheme, by using the push rod at one end of the electric push rod to apply pressure on the top of one side of the stand, the stand is rotated around the hinge point between the stand and the arm, driving the V-shaped plate to rotate synchronously, so as to change the inclination angle of the three V-shaped plates, so as to control the rebound angle of the working material impacting the inner surface of the V-shaped plate, so as to meet the demand that the work material rebounds from the surface of the V-shaped plate and then passes through the bottom of the workpiece and passes through multiple vertical rods to continue to act on the surface of the workpiece. The single chrome-plating layer removal covers a wide area, which is conducive to improving work efficiency;

[0021] Second, in this scheme, by using the working material to pass through the inner side of the support frame ring, the surface of the guide sleeve is used to guide the flow of gas and working material. When the gas passes through the inside of the fan ring, the extension ring is rotated inside the positioning ring by means of multiple balls between the lap ring B and the support ring, so that the guide sleeve is driven to rotate on the inner side of the mounting ring by means of the friction between the lap ring A and the lap ring B, so as to avoid the part of the guide sleeve except the notch groove from blocking the material, and ensure that the working medium can evenly act on the surface of the workpiece when it is sprayed from the top to the bottom;

[0022] Third, in this scheme, multiple vertical poles are used to support the workpiece, so that circles of different diameters formed by the multiple vertical poles are concentrically arranged, and the height of the circle located in the center increases step by step to the height of the surrounding circles, so that the centers of the tops of the multiple vertical poles are in a recessed state, which is convenient for positioning the workpiece, reduces the contact area between the support platform and the workpiece, and does not affect the action of the working material on the bottom surface of the workpiece from between the multiple vertical poles. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of a chromium removal device for aluminizing processing according to the present invention in a use state;

[0024] Figure 2 It is an explosion schematic diagram of a chromium removal device for aluminizing processing according to the present invention;

[0025] Figure 3 A cross-sectional view of a support seat and a support table of a chrome removal device for aluminizing processing according to the present invention;

[0026] Figure 4 The present invention is a chromium plating removal device for aluminizing processing Figure 3 A schematic diagram of the enlarged structure of the middle part A;

[0027] Figure 5 It is a structural schematic diagram of a chrome removal equipment retaining frame for aluminizing processing according to the present invention;

[0028] Figure 6 The present invention is a chromium plating removal device for aluminizing processing Figure 5 The enlarged schematic diagram of the middle part B;

[0029] Figure 7A cross-sectional view of a positioning frame of a chrome removal device for aluminizing processing according to the present invention;

[0030] Figure 8 The present invention is a schematic structural diagram of a guide frame of a chrome removal device for aluminizing processing.

[0031] Reference numerals:

[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 frame; 301. Hanging plate; 302. V-shaped plate; 303. Vertical arm; 304. Vertical frame; 305. Electric push rod; 306. Push rod;

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

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

[0037] 7. Protective cover; 8. Movable strip groove; 9. Annular groove; 10. Ball bearing; 11. Notch groove. DETAILED DESCRIPTION

[0038] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0039] Embodiment 1:

[0040] This embodiment introduces a specific structure of a chromium removal device for aluminizing processing. Figure 1-Figure 6 As shown, it includes a support base 5, a support platform 6 arranged at the center of the inner bottom of the support base 5, and a retaining frame 3 erected on the top of the support base 5, the retaining frame 3 includes a hanging plate 301, and three V-shaped plates 302 are arranged at the bottom of the hanging plate 301;

[0041] Among them, by making three V-shaped plates 302 (the cross sections of the multiple V-shaped plates 302 are all V-shaped) surround the top of the support platform 6 at equal intervals, when the three V-shaped plates 302 form a prism-like tube, because the workpiece is placed on the top of the support platform 6, the three V-shaped plates 302 can surround the workpiece, and the material used to clean the chrome-plated layer of the workpiece (it can be sand sprayed by a sandblasting machine or cleaning liquid sprayed by an ultrasonic cleaning machine) passes through the inner side through the top of the hanging plate 301, and while acting on the surface of the workpiece, it can impact the inner side of the three V-shaped plates 302 and rebound to the surroundings of the bottom of the workpiece, thereby increasing the coverage 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, one side of the top of the stand 304 is hingedly connected to a stand arm 303, and the other side of the top of the stand 304 is provided with an electric push rod 305, one end of the stand arm 303 is processed to the bottom of the hanging plate 301, one end of the electric push rod 305 is assembled and connected to the bottom of the hanging plate 301, and the other end thereof is pin-connected to a push rod 306;

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

[0044] Secondly, in order to enable the electric push rod 305 to stably control the stand 304 to rotate around the hinge point between it and the push rod 306, as shown in FIG. Figure 6 As shown, the top of one side of the stand 304 is processed with an inclined surface inclined to the other side, and the inside of one side of the stand 304 is processed with a movable groove 8. By making one end of the electric push rod 305 movably connected to the inside of the movable groove 8, the two ends of the push rod 306 are respectively fitted with the inclined surface on the stand 304 on both sides of the top of the movable groove 8, and the two ends of the push rod 306 are connected and supported by the stand 304, it can be ensured that the electric push rod 305 stably pushes the stand 304;

[0045] like Figures 2 to 4 As shown, the support platform 6 includes a chassis 602, a plurality of vertical poles 601 are processed on the top of the chassis 602, the top of the chassis 602 is covered with a protective cover 7, and one end of the plurality of vertical poles 601 are processed into round heads;

[0046] Among them, by making multiple vertical rods 601 arranged in multiple circles on the top of the chassis 602 (the centers of the multiple circles overlap), and arranged layer by layer, and multiple chassis 602 on each circle are evenly spaced and arranged around the center of the chassis 602, when the workpiece is placed on the top of the multiple vertical rods 601, it can be ensured that the workpiece is supported on all sides, and the support contact surface is small;

[0047] At the same time, by making the height of the circle formed by the plurality of vertical rods 601 decrease from the periphery of the bottom plate 602 to the center of the circle, when the workpiece is placed on the top of the plurality of vertical rods 601, the height at the center of the top of the plurality of vertical rods 601 is low (in a concave state in the center), so that the workpiece tends to move toward the center, which is conducive to ensuring the stability during the process of removing the chrome plating layer;

[0048] Secondly, the chassis 602 is assembled and connected to the bottom inner wall of the support base 5 by bolts, and the bolts are arranged around the center of the chassis 602. When the protective cover 7 is covered on the top of the chassis 602, the bolts can be stored on the inner side of the protective cover 7 and covered and protected by the protective cover 7.

[0049] Embodiment 2:

[0050] Based on Example 1, this example introduces the specific structure of the hanging plate 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 arranged inside the mounting ring 4, a guide frame 1 is arranged inside the positioning frame 2, the positioning frame 2 includes a support ring 201, and a positioning ring 202 is processed at the bottom of the support ring 201;

[0051] Among them, by making the positioning ring 202 pass through the inside of the erection ring 4 and be plugged into the inner side of the hanging plate 301, and the support ring 201 is erected on the top of the erection ring 4, the support ring 201 can be erected to a certain height, providing sufficient space for the subsequent guide frame 1 to extend into the inner side of the support seat 5 through the hanging plate 301;

[0052] like Figure 8 As shown, the guide frame 1 includes a lap ring A101, the bottom of the lap ring A101 is integrally formed with a support frame ring 102, the inner wall of one end of the support frame ring 102 is processed with multiple cross bars 107, one end of the multiple cross bars 107 is processed with the same guide sleeve 103 (the guide sleeve 103 is in a truncated cone tube state), and the guide sleeve 103 is processed with multiple notched grooves 11 around it. The bottom of the lap ring A101 is provided with a lap ring B104, the bottom of the lap ring B104 is integrally formed with an extension ring 106, and the inner wall of the bottom of the extension ring 106 is processed with a fan ring 105. The lap ring A101 is arranged inside the lap ring B104, so that the support frame ring 102 extends into the inner side of the lap ring B104;

[0053] Among them, by making multiple notches 11 around the guide sleeve 103 at equal intervals, and setting multiple fan blades inside the fan ring 105 to simulate the rotation of the fan during the air flow process, when the chrome-plating material passes through the inner side of the support frame 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 tends to rotate inside the positioning ring 202, so as to drive the guide sleeve 103 to rotate on the inner side of the mounting ring 4 by means of the friction between the lap ring A101 and the lap ring B104, so as to avoid the part of the guide sleeve 103 other than the notches 11 to form a barrier to the material (centrifugal force can be generated during the rotation of the guide sleeve 103, so that the working material is more likely to move around and act on the inner side of (302));

[0054] At the same time, in order to make the guide sleeve 103 rotate smoothly inside the mounting ring 4, Figure 2 and Figure 7 As shown, the bottom surface of the lap ring B104 and the top surface of the support ring 201 are both processed with an annular groove 9, and a plurality of balls 10 are rollingly connected inside the annular groove 9. By placing the plurality of balls 10 between the lap ring B104 and the support ring 201, the lap ring B104 can be supported to rotate on the top of the support ring 201;

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

[0056] Specifically, when the chrome removal equipment for aluminizing is used to remove the chrome layer:

[0057] First, a sandblasting machine or an ultrasonic cleaning machine is used as the main body of the equipment for removing the chrome plating layer, and the support frame ring 102 is removed from the inner side of the lap ring B104 through the lap ring A101, so that the plurality of vertical rods 601 on the support platform 6 are exposed inside the support base 5;

[0058] Then, the workpiece is placed on top of the plurality of uprights 601 so that it is located at the center of the top of the support table 6;

[0059] Next, the support frame ring 102 is reinstalled to the inner side of the lap ring B104, and the nozzle of the sandblasting machine or ultrasonic cleaning machine is extended into the inner side of the support frame ring 102. When the working material passes through the inner side of the support frame ring 102, on the one hand, it passes through the center of the support frame ring 102, and on the other hand, the surface of the guide sleeve 103 guides the flow of gas and working material. When the gas passes through the inside of the fan ring 105, the extension ring 106 can be rotated inside the positioning ring 202 with the help of multiple balls 10 between the lap ring B104 and the support ring 201.

[0060] At the same time, by means of the friction between the lap ring A101 and the lap ring B104, the guide sleeve 103 can be driven to rotate inside the mounting ring 4, so as to avoid the part of the guide sleeve 103 except the notch groove 11 from blocking the material, and ensure that the working medium can evenly act on the surface of the workpiece when it is sprayed from the top to the bottom;

[0061] Furthermore, the working material sprayed from the inner side of the support frame ring 102 to the bottom, after touching the surface of the workpiece, impacts the inner side of the V-shaped plate 302 in all directions, and rebounds from the surface of the V-shaped plate 302, and then passes through the four sides of the bottom of the workpiece, passes through the plurality of vertical rods 601, and continues to act on the surface of the workpiece (it is necessary to ensure that the initial spraying power of the working material is sufficient, and the effect of removing the chrome plating layer can still be achieved during the rebound process);

[0062] At the same time, in order to control the angle of the working material impacting the inner surface of the V-plate 302 and rebounding to the bottom of the workpiece, in actual application, the push rod 306 at one end of the electric push rod 305 is used to apply pressure to the top of one side of the vertical frame 304 (one end of the electric push rod 305 moves inside the movable strip groove 8), so that the vertical frame 304 rotates around the hinge point between it and the vertical arm 303, driving the V-plate 302 to rotate synchronously, so as to change the inclination angle of the three V-plates 302, so as to facilitate the control of the rebound angle of the working material impacting the inner surface of the V-plate 302.

[0063] It is worth noting that in order to allow batches of workpieces to be processed continuously inside the support base 5 , a straight channel can be opened inside the support base 5 to remove the workpieces from the top of the multiple vertical rods 601 inside the support base 5 with the help of a robotic arm.

[0064] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A chromium removal device for aluminizing processing, comprising a bearing structure applied to the device, characterized in that: include: Support seat (5); A support platform (6) is arranged at the center of the inner bottom of the support base (5); A retaining frame (3) is mounted on the top of the supporting base (5); The retaining frame (3) comprises a hanging plate (301), and three V-shaped plates (302) are arranged at the bottom of the hanging plate (301). The three V-shaped plates (302) are equally spaced around the top of the support platform (6), and the cross-sections of the multiple V-shaped plates (302) are all V-shaped and form a prism-like tube. The workpiece is placed on the top of the support platform (6), and the material used to clean the chrome-plated layer of the workpiece passes through the top of the hanging plate (301) and the inner side. When acting on the surface of the workpiece, it impacts the inner side of the three V-shaped plates (302) and rebounds to the surroundings of the bottom of the workpiece.

2. The chromium removal equipment for aluminizing processing according to claim 1, characterized in that: A stand (304) is integrally formed at the corners of the tops of the three V-shaped plates (302), a stand arm (303) is hingedly connected to one side of the top of the stand (304), and an electric push rod (305) is arranged on the other side of the top of the stand (304); The vertical 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 and connected to the bottom of the hanging plate (301). The other end is pin-connected to a push rod (306). The push rod (306) is supported on the top of the vertical frame (304). The electric push rod (305) and the V-plate (302) are respectively located on both sides of the vertical arm (303).

3. A chromium removal device for aluminizing processing as claimed in claim 2, characterized in that: The top of one side of the stand (304) is processed with an inclined surface inclined to the other side, and the interior of one side of the stand (304) is processed with a movable groove (8); One end of the electric push rod (305) is movably connected to the inside of the movable strip groove (8), and the two ends of the push rod (306) are respectively fitted with the inclined surfaces on the stand (304) at both sides of the top of the movable strip groove (8).

4. The chromium removal equipment for aluminizing processing according to claim 1, characterized in that: The support platform (6) comprises a chassis (602), a plurality of vertical poles (601) are processed on the top of the chassis (602), and the top of the chassis (602) is covered with a protective cover (7); The plurality of upright poles (601) are arranged layer by layer in the form of a plurality of circles on the top of the chassis (602), and the plurality of chassis (602) on each circle are evenly spaced and arranged around the center of the chassis (602). The chassis (602) is assembled and connected to the bottom inner wall of the support seat (5) by bolts, and the bolts surround the center of the chassis (602) and are received on the inner side of the protective cover (7), and are covered and protected by the protective cover (7).

5. The chromium removal equipment for aluminizing processing as claimed in claim 4, characterized in that: The height of the circle formed by the plurality of vertical poles (601) decreases from the periphery of the bottom plate (602) to the center of the circle, and one end of the plurality of vertical poles (601) is processed into a round head.

6. The chromium removal equipment for aluminizing processing according to claim 2, 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 arranged on the inner side of the mounting ring (4); a guide frame (1) is arranged on the inner side of the positioning frame (2); the positioning frame (2) comprises a supporting ring (201); and a positioning ring (202) is processed on the bottom of the supporting ring (201); The positioning ring (202) passes through the interior of the erection ring (4) and is plugged into the inner side of the hanging plate (301), and the supporting ring (201) is erected on the top of the erection ring (4).

7. The chromium removal equipment for aluminizing processing according to claim 6, characterized in that: The guide frame (1) comprises a lap ring A (101), the bottom of the lap ring A (101) is integrally formed with a support frame ring (102), a plurality of cross bars (107) are machined on the inner wall of one end of the support frame ring (102), a same guide sleeve (103) is machined on one end of the plurality of cross bars (107), and a plurality of notch grooves (11) are machined around the guide sleeve (103); Wherein, a plurality of notched grooves (11) are arranged at equal intervals around the guide sleeve (103), and the guide sleeve (103) is in a truncated cone tube state.

8. The chromium removal equipment for aluminizing processing according to claim 7, characterized in that: A lap ring B (104) is provided at the bottom of the lap ring A (101), an extension ring (106) is integrally formed at the bottom of the lap ring B (104), and a fan ring (105) is processed at the inner wall of the bottom of the extension ring (106); Wherein, a plurality of fan blades are arranged inside the fan ring (105) to simulate the rotation of the fan during air flow.

9. The chromium removal equipment for aluminizing processing according to claim 8, characterized in that: The bottom surface of the lap ring B (104) and the top surface of the support ring (201) are both processed with an annular groove (9), and a plurality of balls (10) are rollingly connected inside the annular groove (9). The plurality of balls (10) support the lap ring B (104) to rotate on the top of the support ring (201).

10. The chromium removal equipment for aluminizing processing according to claim 8, characterized in that: The diameter of the lap ring A (101) is greater than the diameter of the lap ring B (104). The lap ring A (101) is arranged inside the lap ring B (104) so ​​that the support frame ring (102) extends into the inner side of the lap ring B (104).

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