A spheroidizing processing device and process for small-diameter GCr15 seamless bearing steel tube

Abstract

The present invention discloses a spheroidizing processing device and process for a small-diameter GCr15 seamless bearing steel tube, which is applied in the technical field of spheroidizing processing of seamless bearing steel tubes. The present invention sets an outer cylinder structure, and through the coordinated use of a receiving component and an outer wall component, the heat in the outer wall component can be circulated and concentrated in the seamless bearing steel tube, so that the seamless bearing steel tube can quickly reach a preset temperature and be spheroidized efficiently, thereby not only reducing heat loss but also accelerating the spheroidizing processing efficiency of the seamless bearing steel tube. By setting an inner cylinder structure, and through the coordinated use of a placement component and a positioning component, a plurality of seamless bearing steel tubes can be dispersed to avoid contact and stacking between the seamless bearing steel tubes, and can ensure that all parts of the seamless bearing steel tube are evenly heated, so that the carbides in the microstructure of the seamless bearing steel tube are spheroidized and can be evenly distributed in the form of fine spheres on the ferrite matrix.

Description

Technical Field

[0001] The invention belongs to the technical field of spheroidizing processing of seamless bearing steel tubes, and in particular relates to a spheroidizing processing device and process for a small-diameter GCr15 seamless bearing steel tube. Background Art

[0002] Based on the processing process of spheroidizing processing of small-diameter GCr15 seamless bearing steel tube, it will face a variety of usage situations during processing, but not limited to the one proposed below. More specifically, in particular, the seamless bearing steel tube has good machinability and low overheat sensitivity. Therefore, it needs to undergo spheroidizing annealing treatment to make the carbide in the microstructure of the seamless bearing steel tube spheroidized and evenly distributed in the ferrite matrix in the form of small spheres. However, the conventional spheroidizing processing device has a large internal space, which makes it impossible for the internal heat to be concentrated at the place where the seamless bearing steel tube is placed, which not only causes a part of the heat loss, but also reduces the spheroidizing processing efficiency of the seamless bearing steel tube.

[0003] Moreover, conventional seamless bearing steel tubes are stacked in the spheroidizing processing device. It is inconvenient for the stacked seamless bearing steel tubes to reach the heating temperature at the same time, resulting in different heating temperatures between each seamless bearing steel tube, which has a certain impact on the spheroidizing treatment quality of the seamless bearing steel tubes.

[0004] Combining the above two points of view, it can be found that it is difficult to avoid the above problems at the same time when the existing devices on the market are in use. Even if they can be solved, they need to be connected to external devices, which makes it impossible to achieve the desired effect. Therefore, we propose a small-diameter GCr15 seamless bearing steel tube spheroidizing processing device and process that can reduce heat loss and ensure the quality of spheroidizing treatment of seamless bearing steel tubes during use. Summary of the Invention

[0005] The purpose of the present invention is to target an existing small-diameter GCr15 seamless bearing steel tube spheroidizing processing device and process. Its advantage is that by setting an outer cylinder structure and using a receiving component and an outer wall component in conjunction with each other, the heat in the outer wall component can be circulated and concentrated in the seamless bearing steel tube, so that the seamless bearing steel tube can quickly reach the preset temperature and be spheroidized efficiently, thereby not only reducing heat loss but also accelerating the spheroidizing processing efficiency of the seamless bearing steel tube. By setting an inner cylinder structure and using a placement component and a positioning component in conjunction with each other, multiple seamless bearing steel tubes can be dispersed to avoid contact and stacking between seamless bearing steel tubes, and can ensure that all parts of the seamless bearing steel tube are evenly heated, so that the carbides in the microstructure of the seamless bearing steel tube are spheroidized and can be evenly distributed in the form of small balls on the ferrite matrix.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a small-diameter GCr15 seamless bearing steel tube spheroidizing processing device, including an outer cylinder structure and an inner cylinder structure, the outer cylinder structure includes an outer wall component, a receiving component is arranged inside the outer wall component, the inner cylinder structure includes a placement component, the placement component is arranged inside the receiving component, and a positioning component is arranged inside the placement component.

[0007] By adopting the above technical solution, by setting up an outer cylinder structure, through the coordinated use of the receiving component and the outer wall component, the heat in the outer wall component can be circulated and concentrated in the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and be spheroidized efficiently, thereby not only reducing heat loss, but also accelerating the spheroidization processing efficiency of the seamless bearing steel pipe. By setting up an inner cylinder structure, through the coordinated use of the placement component and the positioning component, multiple seamless bearing steel pipes can be dispersed to avoid contact and stacking between seamless bearing steel pipes, and can ensure that all parts of the seamless bearing steel pipe are evenly heated, so that the carbides in the microstructure of the seamless bearing steel pipe are spheroidized and can be evenly distributed in the form of small balls on the ferrite matrix.

[0008] The present invention is further configured as follows: the outer wall assembly includes an outer shell, the inner wall of the outer shell is provided with an insulation layer, the inner wall of the insulation layer is bolted with a heating wire, the top of the outer shell is bolted with a sealing top cover, the bottom of the inner wall of the outer shell is provided with a suspended bracket, and the top of the suspended bracket is welded to the bottom of the receiving assembly.

[0009] By adopting the above technical solution, by setting the outer wall component, the outer shell, the sealing top cover and the insulation layer, the internal heat loss can be reduced, so that the internal heat preservation effect can be achieved, and the interior of the insulation layer is set with a heating wire, the interior can be heated, and the seamless bearing steel pipe can be spheroidized. In addition, the setting of the suspended bracket can enable the receiving component to be suspended at a certain height, so that hot air can flow.

[0010] The present invention is further configured as follows: the number of the heating wires is several and they are evenly arranged in a ring shape on the inner wall of the insulation layer; the insulation layer is composed of a Jinshi aluminum silicate ceramic fiber module and is arranged in a ring shape on the inner wall of the outer shell.

[0011] By adopting the above technical solution, by increasing the number of heating wires to several and evenly arranging them in a ring shape on the inner wall of the insulation layer, not only can the temperature rise be accelerated, but also the uniform heating effect can be achieved. The insulation layer is composed of a Jinshi aluminum silicate ceramic fiber module and is arranged in a ring shape on the inner wall of the outer shell, which can improve the thermal insulation performance of the outer wall component.

[0012] The present invention is further configured as follows: the receiving assembly includes a guide tube, the guide tube is welded to the top of the suspended bracket, the inner wall of the guide tube is welded with a corrugated plate, the bottom of the guide tube is welded with a guide part, the inside of the guide part is welded with a circulation diffuser, and the bottom of the circulation diffuser extends to the bottom of the guide tube and is bolted to the inner wall of the insulation layer.

[0013] By adopting the above technical solution, by setting up the receiving assembly, the guide tube and the corrugated plate, it can have the effect of guiding the hot air, so that the heat can be concentrated on the seamless bearing steel pipe, and under the dual action of the guide part and the circulation diffusion part, the seamless bearing steel pipe can quickly rise to the preset temperature, thereby improving the spheroidizing processing efficiency.

[0014] The present invention is further configured as follows: the guide part includes a first annular frame plate and a second annular frame plate, the first annular frame plate and the second annular frame plate are welded in sequence from small to large on the bottom of the inner wall of the guide tube, the circulation diffusion part is welded to the bottom inside the first annular frame plate, the surfaces of the first annular frame plate and the second annular frame plate are both welded with a stop plate in a ring shape, the side of the stop plate close to the inner wall of the guide tube and the second annular frame plate are respectively welded to the guide tube and the second annular frame plate, the surfaces of the first annular frame plate and the second annular frame plate are both welded with a support plate in a ring shape, the side of the support plate close to the inner wall of the guide tube and the second annular frame plate are respectively welded to the guide tube and the second annular frame plate, an insert is welded on the top of the support plate, and the surface of the insert is in contact with the inner wall of the placement component.

[0015] By adopting the above technical solution, by setting the guide part, the first annular frame plate, the second annular frame plate and the stop plate, a plurality of hot air flow channels can be formed to guide the hot air at the bottom of the guide tube to the circulation diffusion part, so that the circulation diffusion part can guide the hot air to circulate from bottom to top. The setting of the support plate and the plug block can not only achieve the effect of supporting the placed component, but also limit it to the use position and fix it.

[0016] The present invention is further configured as follows: the circulation diffusion part includes an upper annular plate, a lower annular plate and a baffle plate, the upper annular plate is welded to the bottom of the inner wall of the guide tube and is located inside the first annular frame plate, the lower annular plate is welded to the bottom of the upper annular plate, and the baffle plate is welded to the bottom of the lower annular plate, and the bottoms of the upper and lower annular plates are both welded with exhaust guide plates in the form of annular rings, and the side of the exhaust guide plate close to the lower annular plate and the baffle plate is respectively welded to the lower annular plate and the baffle plate, and the internal rotation of the baffle plate is connected to a drive shaft, the bottom of the drive shaft passes through the interior of the guide tube, the insulation layer and the outer shell and extends to the outside of the outer shell, the top of the drive shaft surface is welded with a connecting piece, and the surface of the connecting piece is welded with a suction fan blade in the form of annular rings.

[0017] By adopting the above technical solution, a circulation diffusion part is set up, and the external driving device drives the driving shaft, connecting parts and suction fan blades to rotate, so that the hot air at the top is sucked to the bottom, so that it can pass through the placement component and the seamless bearing steel pipe, and under the action of the exhaust guide plate between the upper annular plate, the lower annular plate and the baffle plate, the hot air is discharged to the bottom of the guide tube and then rises to the top, thereby completing the circulation and diffusion of the hot air, so that the heat in the outer wall component can be circulated and concentrated in the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and perform efficient spheroidization treatment on it.

[0018] The present invention is further configured such that: hollow meshes are welded to the bottoms of the first annular frame plate and the second annular frame plate, and the bottoms of the hollow meshes are welded to the inner wall of the guide tube.

[0019] By adopting the above technical solution and setting a hollow net, the obstruction of the hot air flow path can be reduced and a certain dust blocking effect can be achieved.

[0020] The present invention is further configured as follows: the placement component includes a hollow inner cylinder, the bottom of the inner part of the hollow inner cylinder is welded with a bracket in a cross shape, the bottom of the bracket is provided with a socket for use with an insert block, and the positioning component is welded to the top of the bracket.

[0021] By adopting the above technical solution, by setting up a placement component and by setting up a hollow inner cylinder and a bracket, not only can the placement of the seamless bearing steel pipe be guaranteed, but also hot air can be easily allowed to enter the interior of the hollow inner cylinder. By setting up a socket, the connection between the bracket and the plug block can be facilitated, thereby achieving the effect of facilitating the fixed placement of the component.

[0022] The present invention is further configured as follows: the positioning assembly includes a support rod, a fixed plate is welded inside the support rod, movable columns are slidably connected on both sides of the support rod, a contact plate is welded on the side of the movable column away from the support rod, a connecting plate is welded on the surface of the movable column, a fastening spring is sleeved on the surface of the movable column, and the fastening spring is welded to the fixed plate and the connecting plate on one side close to the fixed plate and the connecting plate respectively.

[0023] By adopting the above technical solution, by setting up positioning components and dispersed support rods, multiple seamless bearing steel tubes can be dispersed to avoid contact and stacking between seamless bearing steel tubes, and can ensure uniform heating of various parts of the seamless bearing steel tube. With the coordinated use of contact plates, movable columns and fastening springs, the seamless bearing steel tube can be positioned to avoid contact with the support rods, and can also achieve the effect of positioning seamless bearing steel tubes of different diameters.

[0024] A spheroidizing process for a small-diameter GCr15 seamless bearing steel tube comprises the following steps:

[0025] S1. The seamless bearing steel tube is placed on the surface of the positioning component, and the bottom of the seamless bearing steel tube is in contact with the placement component. The positioning component places the seamless bearing steel tube positioning component inside the component;

[0026] S2. Use external lifting equipment to place the placement assembly and seamless bearing steel tube into the receiving assembly and plug it into the receiving assembly. Then, energize the heating wire to heat the insulation layer.

[0027] S3. Drive the circulating diffuser through an external driving device to suck hot air from the top of the outer shell. Part of the hot air enters the interior of the guide tube and is guided to the interior of the placement component through the corrugated plate. Another part of the hot air directly enters the interior of the placement component, then passes through the guide part into the circulating diffuser, and is discharged from the bottom and moves upward to perform circulating hot air heating treatment on the seamless bearing steel pipe.

[0028] In summary, the present invention has the following beneficial effects:

[0029] 1. By setting up the outer cylinder structure and cooperating with the receiving assembly and the outer wall assembly, the heat in the outer wall assembly can be circulated and concentrated in the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and perform spheroidization treatment on it with high efficiency, thereby not only reducing the heat loss, but also accelerating the spheroidization processing efficiency of the seamless bearing steel pipe;

[0030] 2. By setting up the inner cylinder structure and using the placement assembly and the positioning assembly in conjunction, multiple seamless bearing steel tubes can be dispersed to avoid contact and stacking between the seamless bearing steel tubes. This ensures that all parts of the seamless bearing steel tubes are heated evenly, so that the carbides in the microstructure of the seamless bearing steel tubes are spheroidized and evenly distributed in the ferrite matrix in the form of small spheres. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the decomposition of the outer cylinder structure of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the outer wall assembly of the present invention;

[0033] Figure 3 It is a schematic structural diagram of the receiving assembly of the present invention;

[0034] Figure 4 It is a schematic structural diagram of the guide portion of the present invention;

[0035] Figure 5 It is a schematic structural diagram of the circulating diffusion part of the present invention;

[0036] Figure 6This is a schematic diagram of the connection between the outer cylinder structure and the inner cylinder structure of the present invention;

[0037] Figure 7 It is a schematic diagram of the placement component structure of the present invention;

[0038] Figure 8 It is a schematic diagram of the partial structure of the positioning component of the present invention;

[0039] Figure 9 This is a process flow chart of the spheroidizing processing device for small-diameter GCr15 seamless bearing steel tubes of the present invention.

[0040] Reference numerals: 1, outer cylinder structure; 11, outer wall assembly; 111, outer shell; 112, insulation layer; 113, heating wire; 114, sealing top cover; 115, suspension bracket; 12, receiving assembly; 121, guide cylinder; 122, corrugated plate; 123, guide part; 1231, first annular frame plate; 1232, second annular frame plate; 1233, stop plate; 1234, supporting plate; 1235, plug; 124, circulation diffuser; 1241, upper ring shaped plate; 1242, lower annular plate; 1243, baffle plate; 1244, exhaust guide plate; 1245, drive shaft; 1246, connector; 1247, suction fan blade; 2, inner cylinder structure; 21, placement component; 211, hollow inner cylinder; 212, bracket; 213, jack; 22, positioning component; 221, support rod; 222, fixing plate; 223, moving column; 224, contact plate; 225, connecting plate; 226, fastening spring; 3, hollow net. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below with reference to the accompanying drawings.

[0042] Example 1:

[0043] refer to Figure 1-6 A spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube comprises an outer cylinder structure 1, the outer cylinder structure 1 comprises an outer wall component 11, and a receiving component 12 is arranged inside the outer wall component 11. By setting the outer cylinder structure 1 and cooperating with the receiving component 12 and the outer wall component 11, the heat in the outer wall component 11 can be circulated and concentrated in the seamless bearing steel tube, so that the seamless bearing steel tube can quickly reach the preset temperature and be subjected to efficient spheroidizing treatment, thereby not only reducing the heat loss, but also accelerating the spheroidizing processing efficiency of the seamless bearing steel tube.

[0044] like Figure 3As shown, the outer wall component 11 includes an outer shell 111, the inner wall of the outer shell 111 is provided with an insulation layer 112, the inner wall of the insulation layer 112 is bolted with a heating wire 113, the top of the outer shell 111 is bolted with a sealing top cover 114, and the bottom of the inner wall of the outer shell 111 is provided with a suspended bracket 115, and the top of the suspended bracket 115 is welded to the bottom of the receiving component 12. By arranging the outer wall component 11, the outer shell 111, the sealing top cover 114 and the insulation layer 112 are arranged, the heat loss inside can be reduced, so that the interior can achieve the insulation effect, and the interior of the insulation layer 112 is arranged with the heating wire 113, so that the interior can be heated and the seamless bearing steel pipe can be spheroidized. In addition, the arrangement of the suspended bracket 115 can enable the receiving component 12 to be suspended at a certain height, so that hot air can flow.

[0045] like Figure 3 As shown, there are several heating wires 113, which are evenly arranged in a ring shape on the inner wall of the insulation layer 112. The insulation layer 112 is composed of a Jinshi aluminum silicate ceramic fiber module and is arranged in a ring shape on the inner wall of the outer shell 111. By increasing the number of heating wires 113 to several and evenly arranging them in a ring shape on the inner wall of the insulation layer 112, not only can the temperature rise be accelerated, but also the effect of uniform heating can be achieved. By making the insulation layer 112 composed of a Jinshi aluminum silicate ceramic fiber module and arranged in a ring shape on the inner wall of the outer shell 111, the thermal insulation performance of the outer wall component 11 can be improved.

[0046] like Figure 4 As shown, the receiving assembly 12 includes a guide tube 121, which is welded to the top of the suspended bracket 115, and a corrugated plate 122 is welded to the inner wall of the guide tube 121. A guide portion 123 is welded to the bottom of the guide tube 121, and a circulation diffuser 124 is welded inside the guide portion 123. The bottom of the circulation diffuser 124 extends to the bottom of the guide tube 121 and is bolted to the inner wall of the insulation layer 112. By setting the receiving assembly 12, the setting of the guide tube 121 and the corrugated plate 122 can have the effect of guiding hot air, so that heat can be concentrated on the seamless bearing steel pipe, and under the dual action of the guide portion 123 and the circulation diffuser 124, the seamless bearing steel pipe can quickly rise to the preset temperature, thereby improving the spheroidizing processing efficiency.

[0047] like Figure 5As shown, the guide portion 123 includes a first annular frame plate 1231 and a second annular frame plate 1232, and the first annular frame plate 1231 and the second annular frame plate 1232 are welded in sequence from small to large on the bottom of the inner wall of the guide tube 121, and the circulating diffuser 124 is welded to the bottom inside the first annular frame plate 1231. The surfaces of the first annular frame plate 1231 and the second annular frame plate 1232 are both welded with a stopper plate 1233 in an annular shape, and the side of the stopper plate 1233 close to the inner wall of the guide tube 121 and the second annular frame plate 1232 are respectively welded to the guide tube 121 and the second annular frame plate 1232, and the surfaces of the first annular frame plate 1231 and the second annular frame plate 1232 are both welded with a supporting plate 1234 in an annular shape, and the supporting plate 1234 is close to the inner wall of the guide tube 121 One side of the second annular frame plate 1232 is welded to the guide tube 121 and the second annular frame plate 1232 respectively, and an insert block 1235 is welded to the top of the support plate 1234, and the surface of the insert block 1235 is in contact with the inner wall of the placement component 21. By setting the guide part 123, the setting of the first annular frame plate 1231, the second annular frame plate 1232 and the stop plate 1233 can form a plurality of hot air flow channels, which guide the hot air at the bottom of the guide tube 121 to the circulation diffusion part 124, so that the circulation diffusion part 124 can guide the hot air to circulate from bottom to top. The setting of the support plate 1234 and the insert block 1235 can not only achieve the effect of supporting the placement component 21, but also limit it to the use position and fix it.

[0048] like Figure 6As shown, the circulation diffusion part 124 includes an upper annular plate 1241, a lower annular plate 1242 and a baffle plate 1243. The upper annular plate 1241 is welded to the bottom of the inner wall of the guide tube 121 and is located inside the first annular frame plate 1231. The lower annular plate 1242 is welded to the bottom of the upper annular plate 1241. The baffle plate 1243 is welded to the bottom of the lower annular plate 1242. The bottoms of the upper annular plate 1241 and the lower annular plate 1242 are both welded with an exhaust guide plate 1244 in a ring shape. The side of the exhaust guide plate 1244 close to the lower annular plate 1242 and the baffle plate 1243 is welded to the lower annular plate 1242 and the baffle plate 1243 respectively. The internal rotation of the baffle plate 1243 is connected to the drive shaft 1245. The bottom of the drive shaft 1245 passes through the guide tube 121, the insulation layer 112 and the outer shell 111 and extends Extending to the outside of the outer shell 111, the top of the surface of the drive shaft 1245 is welded with a connector 1246, and the surface of the connector 1246 is welded with a suction fan blade 1247 in a ring shape. By setting the circulation diffusion part 124, the external driving device drives the drive shaft 1245, the connector 1246 and the suction fan blade 1247 to rotate, and the hot air at the top is sucked to the bottom, so that it can pass through the placement component 21 and the seamless bearing steel pipe, and under the action of the exhaust guide plate 1244 between the upper annular plate 1241, the lower annular plate 1242 and the baffle plate 1243, the hot air is discharged to the bottom of the guide tube 121, and then rises to the top, thereby completing the circulation and diffusion of the hot air, so that the heat in the outer wall component 11 can be circulated and concentrated in the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and perform efficient spheroidization treatment on it.

[0049] like Figure 5 As shown, the bottom of the first annular frame plate 1231 and the second annular frame plate 1232 are welded with a hollow mesh 3, and the bottom of the hollow mesh 3 is welded to the inner wall of the guide tube 121. By setting the hollow mesh 3, the obstruction of the hot air flow path can be reduced, and it has a certain dust blocking effect.

[0050] Brief description of the use process: The heating wire 113 is energized to increase the temperature inside the insulation layer 112. Under the action of the outer shell 111, the sealing top cover 114 and the insulation layer 112, the heat loss inside is reduced, so that the inside can be kept warm. When the temperature rises, the drive shaft 1245, the connecting piece 1246 and the suction fan blade 1247 are driven to rotate by the external driving device, and the hot air at the top is sucked to the bottom, so that a part of the hot air enters the interior of the guide tube 121 and is guided to the interior of the placement component 21 through the corrugated plate 122. The hot air from another part directly enters the interior of the placement component 21, uniformly heating the seamless bearing steel pipe and moving to The hot air at the bottom will form multiple hot air flow channels between the first annular frame plate 1231, the second annular frame plate 1232 and the stop plate 1233, and the hot air at the bottom of the guide tube 121 will be attracted to the inside of the circulation diffusion part 124, and then discharged to the bottom of the guide tube 121 between the exhaust guide plate 1244 between the upper annular plate 1241, the lower annular plate 1242 and the baffle plate 1243, and then rise to the top, thereby completing the circulation and diffusion of the hot air, so that the heat in the outer wall component 11 can be circulated and concentrated at the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and perform efficient spheroidization treatment on it.

[0051] Example 2:

[0052] refer to Figure 7-8 , including an inner cylinder structure 2, the inner cylinder structure 2 includes a placement component 21, the placement component 21 is arranged inside the receiving component 12, and a positioning component 22 is arranged inside the placement component 21. By setting the inner cylinder structure 2, through the coordinated use of the placement component 21 and the positioning component 22, multiple seamless bearing steel pipes can be dispersed to avoid contact and stacking between the seamless bearing steel pipes, and can ensure that all parts of the seamless bearing steel pipe are uniformly heated, so that the carbides in the microstructure of the seamless bearing steel pipe are spheroidized and can be evenly distributed in the ferrite matrix in the form of small balls.

[0053] like Figure 7 As shown, the placement component 21 includes a hollow inner cylinder 211, and the bottom of the hollow inner cylinder 211 is cross-shaped and welded with a bracket 212. The bottom of the bracket 212 is provided with a socket 213 for use with the plug 1235, and the positioning component 22 is welded to the top of the bracket 212. By setting the placement component 21, through the setting of the hollow inner cylinder 211 and the bracket 212, not only can the placement effect of the seamless bearing steel pipe be guaranteed, but also hot air can be easily allowed to enter the interior of the hollow inner cylinder 211. By setting the socket 213, the bracket 212 and the plug 1235 can be easily connected, thereby achieving the effect of facilitating the fixing of the placement component 21.

[0054] like Figure 8As shown, the positioning assembly 22 includes a support rod 221, a fixed plate 222 is welded inside the support rod 221, and both sides of the support rod 221 are slidably connected to a movable column 223, and the movable column 223 is welded to a side away from the support rod 221 with a contact plate 224, and the surface of the movable column 223 is welded with a connecting plate 225, and the surface of the movable column 223 is sleeved with a fastening spring 226, and the fastening spring 226 is welded to the fixed plate 222 and the connecting plate 225 on one side close to the fixed plate 222 and the connecting plate 225. By setting the positioning assembly 22, the dispersed support rods 221 can disperse multiple seamless bearing steel pipes to avoid contact and stacking between the seamless bearing steel pipes, and can ensure uniform heating of various parts of the seamless bearing steel pipe. In addition, with the coordinated use of the contact plate 224, the movable column 223 and the fastening spring 226, the effect of positioning the seamless bearing steel pipe can be achieved to avoid contact between the support rod 221, and the effect of positioning seamless bearing steel pipes with different diameters can also be achieved.

[0055] Brief description of the usage process: The seamless bearing steel tube is sleeved on the surface of the support rod 221, and the bottom of the seamless bearing steel tube is in contact with the bracket 212. The elastic force of the fastening spring 226 will push the connecting plate 225 and the movable column 223 to move, so that the movable column 223 drives the contact plate 224 to contact the inner wall of the seamless bearing steel tube of a certain diameter to position it. Then, the hollow inner cylinder 211 is placed on the inner wall of the guide cylinder 121 using a lifting equipment, and the socket 213 is sleeved on the surface of the plug block 1235.

[0056] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube, comprising an outer cylinder structure (1) and an inner cylinder structure (2), characterized in that: The outer cylinder structure (1) includes an outer wall component (11), a receiving component (12) is provided inside the outer wall component (11), and the inner cylinder structure (2) includes a placement component (21), the placement component (21) is provided inside the receiving component (12), and a positioning component (22) is provided inside the placement component (21); The heating wire (113) is energized to increase the temperature inside the insulation layer (112). Under the action of the outer shell (111), the sealing top cover (114) and the insulation layer (112), the heat loss inside is reduced, so that the inside can be kept warm. When the temperature rises, the driving shaft (1245), the connecting piece (1246) and the suction fan blade (1247) are driven to rotate by the external driving device, and the hot air at the top is sucked to the bottom, so that a part of the hot air enters the inside of the guide tube (121) and is guided to the inside of the placement component (21) through the corrugated plate (122). The other part of the hot air directly enters the inside of the placement component (21), and the seamless bearing steel pipe is evenly heated and moved to the bottom. The hot air will be formed into multiple hot air flow channels between the first annular frame plate (1231), the second annular frame plate (1232) and the stop plate (1233), and the hot air at the bottom of the guide tube (121) will be attracted to the inside of the circulation diffusion part (124), and then discharged to the bottom of the guide tube (121) from between the exhaust guide plate (1244) between the upper annular plate (1241), the lower annular plate (1242) and the shielding plate (1243), and then rise to the top, thereby completing the circulation and diffusion of the hot air, so that the heat in the outer wall component (11) can be circulated and concentrated at the seamless bearing steel pipe, so that the seamless bearing steel pipe can quickly reach the preset temperature and perform a high-efficiency spheroidization treatment on it.

2. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 1, characterized in that: The outer wall assembly (11) comprises an outer shell (111), an inner wall of the outer shell (111) is provided with a heat-insulating layer (112), a heating wire (113) is bolted to the inner wall of the heat-insulating layer (112), a sealing top cover (114) is bolted to the top of the outer shell (111), a suspended bracket (115) is provided at the bottom of the inner wall of the outer shell (111), and the top of the suspended bracket (115) is welded to the bottom of the receiving assembly (12).

3. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 2, characterized in that: The number of the heating wires (113) is several and they are evenly arranged in a ring shape on the inner wall of the thermal insulation layer (112). The thermal insulation layer (112) is composed of a Jinshi aluminum silicate ceramic fiber module and is arranged in a ring shape on the inner wall of the outer shell (111).

4. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 2, characterized in that: The receiving assembly (12) comprises a guide tube (121), the guide tube (121) being welded to the top of the suspended bracket (115), a corrugated plate (122) being welded to the inner wall of the guide tube (121), a guide portion (123) being welded to the bottom of the guide tube (121), a circulating diffuser (124) being welded inside the guide portion (123), and the bottom of the circulating diffuser (124) extending to the bottom of the guide tube (121) and being bolted to the inner wall of the insulation layer (112).

5. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 4, characterized in that: The guide portion (123) comprises a first annular frame plate (1231) and a second annular frame plate (1232), wherein the first annular frame plate (1231) and the second annular frame plate (1232) are welded sequentially from small to large to the bottom of the inner wall of the guide tube (121), and the circulating diffuser (124) is welded to the bottom inside the first annular frame plate (1231). The surfaces of the first annular frame plate (1231) and the second annular frame plate (1232) are both welded with a stopper plate (1233) in the form of an annular ring, and the stopper plate (1233) is close to the inner wall of the guide tube (121) and the second annular frame plate (1232). One side of the first annular frame plate (1231) and the second annular frame plate (1232) are welded to the guide tube (121) and the second annular frame plate (1232) respectively, and the surfaces of the first annular frame plate (1231) and the second annular frame plate (1232) are both welded with a supporting plate (1234) in an annular shape, and the supporting plate (1234) is close to the inner wall of the guide tube (121) and the side of the second annular frame plate (1232) and is welded to the guide tube (121) and the second annular frame plate (1232) respectively, and the top of the supporting plate (1234) is welded with an insert (1235), and the surface of the insert (1235) is in contact with the inner wall of the placement component (21).

6. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 5, characterized in that: The circulating diffuser (124) comprises an upper annular plate (1241), a lower annular plate (1242) and a shielding plate (1243); the upper annular plate (1241) is welded to the bottom of the inner wall of the guide tube (121) and is located inside the first annular frame plate (1231); the lower annular plate (1242) is welded to the bottom of the upper annular plate (1241); the shielding plate (1243) is welded to the bottom of the lower annular plate (1242); the bottoms of the upper annular plate (1241) and the lower annular plate (1242) are both welded with an exhaust guide plate (1244) in an annular shape; the exhaust guide plate (1244) is welded to the bottom of the lower annular plate (1242). The plate (1244) is welded to the lower annular plate (1242) and the shielding plate (1243) on one side thereof, respectively. The shielding plate (1243) is internally rotatably connected to a drive shaft (1245). The bottom of the drive shaft (1245) passes through the interior of the guide tube (121), the thermal insulation layer (112), and the outer shell (111) and extends to the outside of the outer shell (111). A connector (1246) is welded to the top of the surface of the drive shaft (1245). A suction fan blade (1247) is welded to the surface of the connector (1246) in a ring shape.

7. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 5, characterized in that: A hollow mesh (3) is welded to the bottom of each of the first annular frame plate (1231) and the second annular frame plate (1232), and the bottom of the hollow mesh (3) is welded to the inner wall of the guide tube (121).

8. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 5, characterized in that: The placement assembly (21) comprises a hollow inner cylinder (211), the bottom of the hollow inner cylinder (211) being welded with a bracket (212) in a cross shape, the bottom of the bracket (212) being provided with a socket (213) for use with an insert block (1235), and the positioning assembly (22) being welded to the top of the bracket (212).

9. The spheroidizing processing device for a small-diameter GCr15 seamless bearing steel tube according to claim 8, characterized in that: The positioning assembly (22) includes a support rod (221), a fixed plate (222) is welded inside the support rod (221), and movable columns (223) are slidably connected to both sides of the support rod (221), a contact plate (224) is welded on the side of the movable column (223) away from the support rod (221), a connecting plate (225) is welded on the surface of the movable column (223), and a fastening spring (226) is sleeved on the surface of the movable column (223), and the fastening spring (226) is welded to the fixed plate (222) and the connecting plate (225) on one side thereof close to the fixed plate (222) and the connecting plate (225), respectively.

10. A process for spheroidizing a small-diameter GCr15 seamless bearing steel tube according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The seamless bearing steel tube is set on the surface of the positioning component (22), and the bottom of the seamless bearing steel tube is in contact with the placement component (21), and the positioning component (22) places the seamless bearing steel tube positioning component (22) inside the component (21); S2. Using external lifting equipment, place the assembly (21) and the seamless bearing steel tube together into the interior of the receiving assembly (12), and connect it to the receiving assembly (12), and then energize the heating wire (113) to heat the insulation layer (112); S3. The circulating diffuser (124) is driven by an external driving device to suck the hot air in the outer shell (111) from the top. A part of the hot air enters the interior of the guide tube (121) and is guided to the interior of the placement component (21) through the corrugated plate (122). Another part of the hot air directly enters the interior of the placement component (21), and then enters the interior of the circulating diffuser (124) through the guide part (123), and is then discharged from the bottom and moves upward, thereby performing a circulating hot air heating treatment on the seamless bearing steel pipe.

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