A rapid recrystallization annealing apparatus for high-strength bearing steel

Abstract

This utility model belongs to the technical field of high-strength bearing steel, and discloses a rapid recrystallization annealing device for high-strength bearing steel. It includes an annealing furnace body, with an electromagnetic induction heating coil and a far-infrared heating tube fixedly installed on the bottom inner wall of the furnace body. A bearing steel inlet groove is opened on the right side of the furnace body, and a fixing plate is fixedly installed on the right side of the furnace body. After cooling, the electric slider is controlled to slide above the electric slide rail, and a third electric telescopic rod is controlled to drive the feeding push plate to abut against the bottom inner wall of the annealing furnace body. The sliding feeding push plate pushes the annealed bearing steel out. After the extension block moves, it can abut against the rotating sealing baffle, causing the rotating sealing baffle to rotate around the rotating axis under force. After the discharge chute is opened, the bearing steel can be pushed out and collected through the feeding guide plate. This makes the device easy and quick to operate, requiring no manual assistance.

Description

Technical Field

[0001] This utility model relates to the field of high-strength bearing steel technology, and in particular to a rapid recrystallization annealing device for high-strength bearing steel. Background Technology

[0002] In bearing manufacturing, recrystallization annealing of high-strength bearing steel is one of the key processes. Its purpose is to eliminate internal stresses generated during processing, refine grain size, and improve the metal's microstructure and properties. However, existing bearing steel annealing equipment has many problems.

[0003] In practice, traditional annealing equipment mostly uses a single heating method, which results in slow heating speed, long annealing cycle, and low production efficiency. On the other hand, the temperature control is not precise enough, making it difficult to ensure that the bearing steel is recrystallized and annealed in the optimal temperature range, which can easily lead to uneven annealing and affect the quality and performance of the bearing steel. Therefore, we propose a rapid recrystallization annealing device for high-strength bearing steel. Utility Model Content

[0004] The purpose of this invention is to provide a rapid recrystallization annealing device for high-strength bearing steel, which solves the existing problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rapid recrystallization annealing apparatus for high-strength bearing steel includes an annealing furnace body. An electromagnetic induction heating coil and a far-infrared heating tube are fixedly installed on the bottom inner wall of the annealing furnace body. A bearing steel inlet groove is opened on the right side of the annealing furnace body. A fixing plate is fixedly installed on the right side of the annealing furnace body. A first electric telescopic rod is fixedly installed at the bottom of the fixing plate. A shielding mounting frame is fixedly installed at the output end of the first electric telescopic rod. The shielding mounting frame is in contact with the bearing steel inlet groove. An anti-oxidation coating raw material storage box is fixedly installed on the top of the shielding mounting frame.

[0007] As a further improvement to the above solution, a pump is fixedly installed on the top of the anti-oxidation coating raw material storage box, a transmission pipe is fixedly installed on the output end of the pump, multiple nozzles are fixedly installed on the top inner wall of the shielding mounting frame, the output end of the transmission pipe is connected to the input end of the nozzle, a flow-dividing cavity is opened on the inner side of the shielding mounting frame, and the nozzle is connected to the flow-dividing cavity.

[0008] By adopting the above technical solution, the second electric telescopic rod is controlled to drive the push plate to push the bearing steel. During the pushing process, the pump above the shielding mounting frame can be controlled to transfer the coating material inside the anti-oxidation coating material storage box to the nozzle through the transmission pipeline. This allows the nozzle to spray an anti-oxidation coating on the outer surface of the bearing steel, further enhancing the anti-oxidation ability of the bearing steel surface and effectively avoiding the generation of defects such as decarburization.

[0009] As a further improvement to the above solution, a coolant storage tank is fixedly installed on the top of the annealing furnace body, a water pump is fixedly installed on the front side of the coolant storage tank, a liquid conveying pipe is fixedly installed at the output end of the water pump, a spray head is fixedly installed on the front side of the annealing furnace body, and the output end of the liquid conveying pipe is fixedly installed at the input end of the spray head.

[0010] As a further improvement to the above solution, a discharge chute is provided on the left side of the annealing furnace body, a rotating shaft is rotatably installed on the inner side of the discharge chute, a torsion spring is fixedly installed on the rear inner wall of the discharge chute, the rotating shaft is fixedly installed on the inner side of the torsion spring, a rotating sealing baffle is fixedly installed on the outer side of the rotating shaft, and a feeding guide plate is fixedly installed on the left side of the annealing furnace body.

[0011] By adopting the above technical solution, the extension block can abut against the rotating sealing baffle after it moves, and the rotating sealing baffle can rotate around the rotating shaft under force. After the discharge chute is opened, the bearing steel can be pushed out and transported and collected through the discharge guide plate, making the device more convenient and quick to operate, without the need for manual auxiliary operation.

[0012] As a further improvement to the above solution, a fixed frame is provided on the right side of the annealing furnace body, and a bearing steel conveyor belt is rotatably installed between the inner walls of the left and right sides of the fixed frame. An installation plate is fixedly installed on the top of the fixed frame, and a second electric telescopic rod is fixedly installed on the right side of the installation plate. A push plate is fixedly installed at the output end of the second electric telescopic rod.

[0013] As a further improvement to the above solution, an electric slide rail is fixedly installed on the top inner wall of the annealing furnace body, an electric slider is slidably installed on the outer side of the electric slide rail, a third electric telescopic rod is fixedly installed at the bottom of the electric slider, a feeding push plate is fixedly installed at the output end of the third electric telescopic rod, and two extension blocks are fixedly installed on the left side of the feeding push plate.

[0014] By adopting the above technical solution, after cooling is completed, the electric slider is controlled to slide above the electric slide rail, and the third electric telescopic rod is controlled to drive the feeding push plate to abut against the bottom inner wall of the annealing furnace body, so that the sliding feeding push plate pushes the annealed bearing steel to be fed.

[0015] As a further improvement to the above solution, an exhaust duct is fixedly installed on the front side of the annealing furnace body, a fan is installed on the inner side of the exhaust duct, and a solenoid valve is fixedly installed on the outer side of the exhaust duct.

[0016] By adopting the above technical solution, after annealing, the electromagnetic induction heating coil and far-infrared heating tube can be shut off, and the solenoid valve above the exhaust duct can be opened. The exhaust duct is equipped with a fan, which can accelerate the discharge of hot air from the annealing furnace and allow the spray head to spray the coolant in the coolant storage tank into the interior of the annealing furnace, thereby accelerating the air circulation inside the furnace, achieving rapid cooling, and shortening the annealing cycle.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) The present invention provides a rapid recrystallization annealing device for high-strength bearing steel. After cooling, the electric slider is controlled to slide above the electric slide rail, and the third electric telescopic rod is controlled to drive the feeding push plate to abut against the bottom inner wall of the annealing furnace. The feeding push plate in the sliding position pushes the annealed bearing steel. After the extension block moves, it can abut against the rotating sealing baffle and make the rotating sealing baffle rotate around the rotating shaft under force. After the discharge chute is opened, the bearing steel can be pushed out and transported and collected through the feeding guide plate. This makes the device more convenient and quick to operate, and does not require manual operation.

[0019] (2) A rapid recrystallization annealing device for high-strength bearing steel of this utility model is used to transport bearing steel sequentially by a bearing steel conveyor belt. The first electric telescopic rod is controlled to drive the shielding mounting frame to rise. At this time, the second electric telescopic rod can be controlled to drive the push plate to push the bearing steel. During the pushing process, the pump above the shielding mounting frame can be controlled to transfer the coating material inside the anti-oxidation coating raw material storage box to the nozzle through the transmission pipeline. The nozzle can spray an anti-oxidation coating on the outer surface of the bearing steel, further enhancing the anti-oxidation ability of the bearing steel surface and effectively avoiding the generation of defects such as decarburization.

[0020] (3) The present invention provides a rapid recrystallization annealing device for high-strength bearing steel. After the bearing steel is pushed into the annealing furnace, the electromagnetic induction heating coil rapidly heats the bearing steel through the principle of electromagnetic induction. It has the characteristics of fast heating speed and high thermal efficiency. The far-infrared heating tube is installed above the electromagnetic induction heating coil to assist electromagnetic induction heating and make the bearing steel more uniformly heated. After annealing, the electromagnetic induction heating coil and far-infrared heating tube can be turned off and the electromagnetic valve above the exhaust pipe can be opened. The exhaust pipe is equipped with a fan, which can accelerate the discharge of hot air inside the annealing furnace and allow the spray head to spray the coolant inside the coolant storage tank into the interior of the annealing furnace, accelerate the air circulation inside the furnace, achieve rapid cooling, and shorten the annealing cycle. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a partial three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a three-dimensional structural diagram of the cross-section of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the rotating sealing baffle and extension block in this utility model.

[0026] In the diagram: 1. Annealing furnace body; 2. Electromagnetic induction heating coil; 3. Far-infrared heating tube; 4. Bearing steel inlet trough; 5. Fixing plate; 6. First electric telescopic rod; 7. Shielding mounting bracket; 8. Antioxidant coating raw material storage box; 9. Pump; 10. Transmission pipeline; 11. Nozzle; 12. Coolant storage tank; 13. Water pump; 14. Liquid transmission pipeline; 15. Spray head; 16. Discharge trough; 17. Rotating shaft; 18. Rotating sealing baffle; 19. Discharge guide plate; 20. Fixing bracket; 21. Bearing steel conveyor belt; 22. Mounting plate; 23. Second electric telescopic rod; 24. Pushing plate; 25. Electric slide rail; 26. Electric slider; 27. Discharge push plate; 28. Extension block; 29. ​​Exhaust duct; 30. Solenoid valve; 31. Third electric telescopic rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] refer to Figure 1-4A rapid recrystallization annealing device for high-strength bearing steel includes an annealing furnace body 1. An electromagnetic induction heating coil 2 and a far-infrared heating tube 3 are fixedly installed on the bottom inner wall of the annealing furnace body 1. A bearing steel inlet groove 4 is opened on the right side of the annealing furnace body 1. A fixing plate 5 is fixedly installed on the right side of the annealing furnace body 1. A first electric telescopic rod 6 is fixedly installed at the bottom of the fixing plate 5. A shielding mounting frame 7 is fixedly installed at the output end of the first electric telescopic rod 6. The shielding mounting frame 7 and the bearing steel inlet groove 4 are in contact. An anti-oxidation coating raw material storage box 8 is fixedly installed on the top of the shielding mounting frame 7.

[0029] In this embodiment, a pump 9 is fixedly installed on the top of the anti-oxidation coating raw material storage box 8, and a transmission pipe 10 is fixedly installed on the output end of the pump 9. Multiple nozzles 11 are fixedly installed on the top inner wall of the shielding mounting frame 7. The output end of the transmission pipe 10 is connected to the input end of the nozzle 11. A diversion cavity is opened on the inner side of the shielding mounting frame 7, and the nozzle 11 is connected to the diversion cavity.

[0030] In this embodiment, a coolant storage tank 12 is fixedly installed on the top of the annealing furnace body 1, a water pump 13 is fixedly installed on the front side of the coolant storage tank 12, a liquid conveying pipe 14 is fixedly installed at the output end of the water pump 13, a spray head 15 is fixedly installed on the front side of the annealing furnace body 1, and the output end of the liquid conveying pipe 14 is fixedly installed at the input end of the spray head 15.

[0031] In this embodiment, a discharge chute 16 is provided on the left side of the annealing furnace body 1. A rotating shaft 17 is rotatably installed on the inner side of the discharge chute 16. A torsion spring is fixedly installed on the rear inner wall of the discharge chute 16. The rotating shaft 17 is fixedly installed on the inner side of the torsion spring. A rotating sealing baffle 18 is fixedly installed on the outer side of the rotating shaft 17. A feeding guide plate 19 is fixedly installed on the left side of the annealing furnace body 1.

[0032] In this embodiment, a fixed frame 20 is provided on the right side of the annealing furnace body 1. A bearing steel conveyor belt 21 is rotatably installed between the inner walls of the left and right sides of the fixed frame 20. An installation plate 22 is fixedly installed on the top of the fixed frame 20. A second electric telescopic rod 23 is fixedly installed on the right side of the installation plate 22. A push plate 24 is fixedly installed at the output end of the second electric telescopic rod 23.

[0033] In this embodiment, an electric slide rail 25 is fixedly installed on the top inner wall of the annealing furnace body 1, an electric slider 26 is slidably installed on the outer side of the electric slide rail 25, a third electric telescopic rod 31 is fixedly installed at the bottom of the electric slider 26, a feeding push plate 27 is fixedly installed at the output end of the third electric telescopic rod 31, and two extension blocks 28 are fixedly installed on the left side of the feeding push plate 27.

[0034] In this embodiment, an exhaust duct 29 is fixedly installed on the front side of the annealing furnace body 1, a fan is provided on the inner side of the exhaust duct 29, and a solenoid valve 30 is fixedly installed on the outer side of the exhaust duct 29.

[0035] The implementation principle of a rapid recrystallization annealing device for high-strength bearing steel in this application embodiment is as follows: the bearing steel is conveyed sequentially by the bearing steel conveyor belt 21, and the first electric telescopic rod 6 is controlled to drive the shielding mounting frame 7 to rise. At this time, the second electric telescopic rod 23 can be controlled to drive the push plate 24 to push the bearing steel. During the pushing process, the pump 9 above the shielding mounting frame 7 can be controlled to transfer the coating material inside the anti-oxidation coating raw material storage box 8 to the nozzle 11 through the transmission pipe 10. The nozzle 11 can spray an anti-oxidation coating on the outer surface of the bearing steel, further enhancing the anti-oxidation ability of the bearing steel surface and effectively avoiding the generation of defects such as decarburization.

[0036] After the bearing steel is pushed into the annealing furnace body 1, the electromagnetic induction heating coil 2 heats the bearing steel rapidly through the principle of electromagnetic induction, which has the characteristics of fast heating speed and high thermal efficiency. The far-infrared heating tube 3 is installed above the electromagnetic induction heating coil 2, which can assist electromagnetic induction heating and make the bearing steel heat more evenly. After annealing, the electromagnetic induction heating coil 2 and the far-infrared heating tube 3 can be turned off, and the solenoid valve 30 above the exhaust pipe 29 can be opened. The exhaust pipe 29 is equipped with a fan, which can accelerate the discharge of hot air inside the annealing furnace body 1, and allow the spray head 15 to spray the coolant inside the coolant storage tank 12 into the interior of the annealing furnace body 1, accelerate the air circulation inside the furnace, achieve rapid cooling, and shorten the annealing cycle.

[0037] After cooling is complete, the electric slider 26 is controlled to slide above the electric slide rail 25, and the third electric telescopic rod 31 is controlled to drive the feeding push plate 27 to abut against the bottom inner wall of the annealing furnace body 1. The sliding feeding push plate 27 pushes the annealed bearing steel out of the furnace. After the extension block 28 moves, it can abut against the rotating sealing baffle 18, and the rotating sealing baffle 18 is forced to rotate around the rotating shaft 17. After the discharge chute 16 is opened, the bearing steel can be pushed out and transported and collected through the feeding guide plate 19. This makes the device easy and quick to operate without the need for manual operation.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The rapid recrystallization annealing apparatus for high-strength bearing steel provided by this utility model has been described in detail above. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A rapid recrystallization annealing apparatus for high-strength bearing steel, characterized in that, include: An annealing furnace body (1) is provided with an electromagnetic induction heating coil (2) and a far-infrared heating tube (3) fixedly installed on the bottom inner wall of the annealing furnace body (1). A bearing steel inlet groove (4) is provided on the right side of the annealing furnace body (1). A fixing plate (5) is fixedly installed on the right side of the annealing furnace body (1). A first electric telescopic rod (6) is fixedly installed at the bottom of the fixing plate (5). A shielding mounting bracket (7) is fixedly installed at the output end of the first electric telescopic rod (6). The shielding mounting bracket (7) and the bearing steel inlet groove (4) are in contact. An anti-oxidation coating raw material storage box (8) is fixedly installed on the top of the shielding mounting bracket (7).

2. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, A pump (9) is fixedly installed on the top of the anti-oxidation coating raw material storage box (8). A transmission pipe (10) is fixedly installed at the output end of the pump (9). Multiple nozzles (11) are fixedly installed on the inner wall of the top of the shielding mounting frame (7). The output end of the transmission pipe (10) is connected to the input end of the nozzle (11). A flow divider is opened on the inner side of the shielding mounting frame (7). The nozzle (11) is connected to the flow divider.

3. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, A coolant storage tank (12) is fixedly installed on the top of the annealing furnace body (1). A water pump (13) is fixedly installed on the front side of the coolant storage tank (12). A liquid conveying pipe (14) is fixedly installed at the output end of the water pump (13). A spray head (15) is fixedly installed on the front side of the annealing furnace body (1). The output end of the liquid conveying pipe (14) is fixedly installed at the input end of the spray head (15).

4. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, The annealing furnace body (1) has a discharge chute (16) on its left side. A rotating shaft (17) is rotatably installed on the inner side of the discharge chute (16). A torsion spring is fixedly installed on the rear inner wall of the discharge chute (16). The rotating shaft (17) is fixedly installed on the inner side of the torsion spring. A rotating sealing baffle (18) is fixedly installed on the outer side of the rotating shaft (17). A feeding guide plate (19) is fixedly installed on the left side of the annealing furnace body (1).

5. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, A fixed frame (20) is provided on the right side of the annealing furnace body (1). A bearing steel conveyor belt (21) is rotatably installed between the inner walls of the left and right sides of the fixed frame (20). An installation plate (22) is fixedly installed on the top of the fixed frame (20). A second electric telescopic rod (23) is fixedly installed on the right side of the installation plate (22). A push plate (24) is fixedly installed at the output end of the second electric telescopic rod (23).

6. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, An electric slide rail (25) is fixedly installed on the top inner wall of the annealing furnace body (1). An electric slider (26) is slidably installed on the outside of the electric slide rail (25). A third electric telescopic rod (31) is fixedly installed at the bottom of the electric slider (26). A feeding push plate (27) is fixedly installed at the output end of the third electric telescopic rod (31). Two extension blocks (28) are fixedly installed on the left side of the feeding push plate (27).

7. The rapid recrystallization annealing apparatus for high-strength bearing steel according to claim 1, characterized in that, An exhaust duct (29) is fixedly installed on the front side of the annealing furnace body (1). A fan is installed on the inner side of the exhaust duct (29), and a solenoid valve (30) is fixedly installed on the outer side of the exhaust duct (29).

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