Carburizing bearing steel production and processing device

Abstract

The utility model discloses a kind of carburizing bearing steel production and processing device related to carburizing furnace technical field, rotation drive connection is provided with the supporting rod of carburizing furnace coaxial arrangement in carburizing furnace, supporting rod is detachably installed with the material rack for placing workpiece, and can be synchronous with supporting rod Rotating, material rack includes the outer frame of "n" type structure, outer frame upper portion is equipped with lifting ring, a plurality of matrix arrangement is equipped on the outer frame both sides side wall, and one-to-one corresponding through opening, and tray is detachably installed between the corresponding through opening of outer frame both sides side wall;The utility model not only can rotate carburizing operation to bearing steel workpiece, effectively eliminate furnace temperature / atmosphere dead angle, and also greatly improve the contact area of carburizing gas and workpiece, effectively guarantee the uniformity of workpiece carburizing.

Description

Technical Field

[0001] This utility model relates to the field of carburizing furnace technology, and in particular to a carburizing bearing steel production and processing device. Background Technology

[0002] As a key material for high-load mechanical components, the synergistic optimization of surface hardness and core toughness is crucial for carburized bearing steel. During the production and processing of bearing steel, carburizing treatment aims to significantly improve its comprehensive mechanical properties by combining surface strengthening with the preservation of core toughness, thus meeting the requirements for use under high-load and high-wear conditions. However, in traditional carburizing processes, the workpiece is mostly placed in a basket or rack for static carburizing. This carburizing method also has the following problems:

[0003] 1. Workpieces are usually placed statically in the carburizing furnace, which leads to uneven temperature distribution and poor atmosphere flow, making it easy to form carburizing dead zones. Especially for bearing rings or gears with complex geometries, the thickness of the carburized layer often fluctuates (the deviation can reach more than ±0.2mm), affecting fatigue life.

[0004] 2. When the workpiece is placed statically in the material basket or rack and remains stationary, the contact surface is not sufficiently carburized, and "soft spots" are easily formed in the contact area between the bottom and the material tray.

[0005] 3. Traditional material baskets have a high side wall closure rate (>60%), which hinders the flow of carburizing gas and cannot be adapted to workpieces of different sizes;

[0006] Therefore, there is an urgent need for a production and processing device for carburized bearing steel that can overcome the above-mentioned shortcomings. Utility Model Content

[0007] In order to overcome the shortcomings of the prior art, this utility model discloses a carburizing bearing steel production and processing device. This utility model can not only perform rotating carburizing operations on bearing steel workpieces, effectively eliminating dead zones in furnace temperature / atmosphere, but also greatly increase the contact area between carburizing gas and workpiece, effectively ensuring the uniformity of carburizing of workpieces.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A carburizing bearing steel production and processing apparatus includes a carburizing furnace, a sealing cover on the upper part of the carburizing furnace, a drive mechanism on one side of the carburizing furnace for driving the opening and closing of the sealing cover, a support rod coaxially connected to the carburizing furnace for rotation drive, a material rack for placing workpieces and capable of rotating synchronously with the support rod is detachably installed on the support rod, the material rack includes an "n"-shaped outer frame, a lifting ring on the upper part of the outer frame, and several through-holes arranged in a matrix and corresponding to each other on both sides of the outer frame, and a material tray is detachably installed between the corresponding through-holes on both sides of the outer frame.

[0010] Furthermore, the tray is composed of several material plates arranged at intervals on the same plane. The length of the material plate is not less than the distance between the two inner walls of the outer frame, and the width of the material plate is less than the width of the opening.

[0011] Furthermore, a rod is provided on the lower inner wall of the opening, and both ends of the material plate are provided with insertion holes that penetrate the material plate and are compatible with the rod.

[0012] Furthermore, the material plate surface is provided with several ventilation holes that are arranged in an orderly manner along the axial direction of the material plate and penetrate through the material plate.

[0013] Furthermore, the surface of the material plate is evenly distributed with several support rods that are staggered with the air vents and used to support the workpiece.

[0014] Furthermore, a limiting component for limiting and blocking the workpiece is detachably installed on the upper part of the support rod.

[0015] Furthermore, a central rod parallel to the support rod is provided in the middle of the inner cavity of the outer frame. The central rod is staggered with the openings on the two side walls of the outer frame, and the lower end face of the central rod is provided with a slot adapted to be inserted into the support rod.

[0016] Furthermore, the support rod is rotatably installed inside the carburizing furnace, and a motor is located at the bottom of the carburizing furnace. The output end of the motor is sealed and extends into the carburizing furnace and is connected to the support rod drive.

[0017] Furthermore, the support rod is a polygonal rod structure.

[0018] Compared with the prior art, the beneficial effects of this utility model are: by setting a rotatable material rack, the dead zone of temperature / atmosphere inside the furnace can be effectively eliminated during the carburizing operation of bearing steel workpieces;

[0019] By setting openings on the side wall of the outer frame, not only is the obstruction of the carburizing gas by the side wall of the outer frame reduced, ensuring full contact between the workpiece and the carburizing gas, but the material tray can also be installed in a convenient and efficient manner.

[0020] The material tray, which is composed of several material plates, not only facilitates the disassembly and installation of the material tray, but also allows for the adjustment of the distance between two material plates within the tray to meet the needs of placing and supporting workpieces of different sizes.

[0021] By setting up vents and support rods, the carburizing gas can smoothly contact the bottom of the workpiece, thereby improving the uniformity of the carburizing operation.

[0022] By setting limit components, the workpiece can be limited and blocked, which not only prevents wear between workpieces, but also effectively prevents the workpiece from falling and being damaged during the rotational carburizing process.

[0023] This invention not only enables rotating carburizing of bearing steel workpieces, effectively eliminating dead zones in furnace temperature / atmosphere, but also significantly increases the contact area between the carburizing gas and the workpiece, effectively ensuring the uniformity of carburizing and providing strong support for high-quality carburizing of bearing steel workpieces. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the material rack structure of this utility model;

[0026] Figure 3 This is a side view of the outer frame of this utility model;

[0027] Figure 4 This is a schematic diagram of the material tray structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the material plate structure of this utility model.

[0029] In the diagram: 1. Sealing cap; 2. Drive mechanism; 3. Carburizing furnace; 4. Material rack; 5. Support rod; 6. Support leg; 7. Motor; 8. Lifting ring; 9. Outer frame; 10. Through port; 11. Material tray; 12. Center rod; 13. Slot; 14. Insert rod; 15. Material plate; 16. Insertion hole; 17. Vent; 18. Support rod; 19. Limiting component; 20. Groove. Detailed Implementation

[0030] The technical solution of this utility model will be described below with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this utility model for the convenience of describing this utility model, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0031] Please refer to the instruction manual appendix. Figure 1-5 This utility model provides a technical solution:

[0032] Example 1: A carburizing bearing steel production and processing device includes a carburizing furnace 3. A sealing cover 1 is provided on the upper part of the carburizing furnace 3. A drive mechanism 2 for driving the opening and closing of the sealing cover 1 is provided on one side of the carburizing furnace 3. The drive mechanism 2 is hydraulically / pneumatically driven for lifting and then rotated through a slewing support bearing to realize the opening and closing of the sealing cover 1. A support rod 5 is rotatably connected to the carburizing furnace 3 and is coaxially arranged with the carburizing furnace 3. Specifically, the support rod 5 is rotatably installed inside the carburizing furnace 3. A motor 7 is provided at the bottom of the carburizing furnace 3. The output end of the motor 7 is sealed through the carburizing furnace 3 and drivenly connected to the support rod 5. The output end of the motor 7 and the carburizing furnace 3 can be sealed with graphite packing or metal bellows. In order to realize the installation of the motor 7, a support leg 6 is provided at the bottom of the carburizing furnace 3, so that the bottom of the carburizing furnace 3 has space for the installation of the motor 7.

[0033] A material rack 4 for placing workpieces and rotating synchronously with the support rod 5 is detachably installed on the support rod 5. Specifically, the material rack 4 includes an "n"-shaped outer frame 9. The upper part of the outer frame 9 is provided with a lifting ring 8. The middle of the inner cavity of the outer frame 9 is provided with a central rod 12 parallel to the support rod 5. The central rod 12 is staggered with the through-holes 10 on both sides of the outer frame 9. The lower end face of the central rod 12 is provided with a slot 13 that is compatible with the support rod 5. In order to ensure that the support rod 5 can effectively drive the central rod 12 and the outer frame 9 to rotate, the support rod 5 is a polygonal rod body, and the corresponding slot 13 is a polygonal structure compatible with the support rod 5. Several through-holes 10 are arranged in a matrix and correspond one-to-one on both sides of the outer frame 9. Multiple material trays 11 are provided between the two sides of the outer frame 9 from top to bottom, and the central rod 12 is set through the material trays 11.

[0034] When performing carburizing of bearing steel workpieces, the workers can place the workpieces one by one on the material tray 11, and then use the lifting equipment to lift the material rack 4 through the lifting ring 8. After aligning the center rod 12 with the support rod 5 in the carburizing furnace 3, the material rack 4 is slowly lowered into the carburizing furnace 3. The support rod 5 is inserted into the slot 13 of the center rod 12 and the sealing cover 1 is closed. During the carburizing process, the motor 7 drives the support rod 5 to rotate, which in turn drives the material rack 4 to rotate synchronously, realizing the rotational carburizing operation of the workpiece. This effectively eliminates the temperature / atmosphere dead zone in the furnace, and the carburizing gas can also flow smoothly from the openings 10 on both sides of the outer frame 9 and the front and back of the outer frame 9 into the material rack 4 to contact the workpiece, thereby completing the carburizing operation of the workpiece.

[0035] In Example 2, to meet the needs of carburizing workpieces of different sizes, the spacing of the material tray 11 needs to be adjusted according to the size of the workpiece. To facilitate the disassembly and adjustment of the material tray 11, the material tray 11 is composed of several material plates 15 arranged at intervals on the same plane. The length of the material plate 15 is not less than the distance between the two inner walls of the outer frame 9, and the width of the material plate 15 is less than the width of the opening 10. After inserting multiple material plates 15 into the corresponding openings 10 on the two inner walls of the outer frame 9 on the same horizontal plane, the material tray 11 can be installed and formed. To ensure that the material plates 15 are installed firmly and stably, the lower inner wall of the opening 10 is provided with a rod 14. Both ends of the material plate 15 are provided with insertion holes 16 that penetrate the material plate 15 and are adapted to the rod 14. By splicing and combining multiple material plates 15 to form the material tray 11, the spacing between the material plates 15 in the material tray 11 can also be adjusted. Thus, while meeting the workpiece placement requirements, the bottom of the workpiece is suspended and exposed to the maximum extent, thereby improving its carburizing effect.

[0036] In Example 3, during the carburizing process, the bottom surface of the workpiece is in contact with the material tray 11, which prevents the bottom surface of the workpiece from fully contacting the carburizing gas, thus affecting the carburizing quality of the workpiece. To address this, the material plate 15 is provided with several vents 17 arranged in an orderly manner along the axial direction of the material plate 15 and penetrating the material plate 15. The material plate 15 is also provided with several support rods 18 that are staggered with the vents 17 and used to support the workpiece. The support rods 18 can effectively reduce the contact area between the bottom surface of the workpiece and the material tray 11, allowing the carburizing gas to effectively contact the bottom surface of the workpiece.

[0037] During the rotation of the material rack 4, the workpiece is easily displaced by centrifugal force, which can easily lead to collisions and friction between the workpieces. In severe cases, the workpiece may even fall off. In order to ensure the horizontal stability of the workpiece during the rotation of the material rack 4, a limiting component 19 for limiting and blocking the workpiece is detachably installed on the upper part of the support rod 18. To facilitate the installation of the limiting component 19, the bottom of the limiting component 19 is provided with a groove 20 that is inserted and matched with the support rod 18. After the workpiece is placed, the limiting component 19 is inserted into the support rod 18 adjacent to the outside of the workpiece. The limiting component 19 can effectively limit and block the workpiece for protection.

[0038] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A carburizing bearing steel production and processing apparatus, comprising a carburizing furnace (3), a sealing cover (1) provided on the upper part of the carburizing furnace (3), and a driving mechanism (2) for driving the opening and closing of the sealing cover (1) provided on one side of the carburizing furnace (3), characterized in that: The carburizing furnace (3) is connected to a support rod (5) that is coaxially arranged with the carburizing furnace (3). A material rack (4) for placing workpieces and which can rotate synchronously with the support rod (5) is detachably installed on the support rod (5). The material rack (4) includes an "n"-shaped outer frame (9). A lifting ring (8) is provided on the upper part of the outer frame (9). Several through-holes (10) arranged in a matrix and corresponding to each other are provided on both sides of the outer frame (9). A material tray (11) is detachably installed between the corresponding through-holes (10) on both sides of the outer frame (9).

2. The carburized bearing steel production and processing apparatus according to claim 1, characterized in that: The tray (11) is composed of several material plates (15) arranged at intervals on the same plane. The length of the material plate (15) is not less than the distance between the two inner side walls of the outer frame (9), and the width of the material plate (15) is less than the width of the opening (10).

3. The carburized bearing steel production and processing apparatus according to claim 2, characterized in that: A rod (14) is provided on the lower inner wall of the opening (10), and a hole (16) is provided at both ends of the material plate (15) that penetrates the material plate (15) and is adapted to the rod (14).

4. The carburized bearing steel production and processing apparatus according to claim 3, characterized in that: The material plate (15) has several air vents (17) arranged in an orderly manner along the axial direction of the material plate (15) and passing through the material plate (15).

5. The carburized bearing steel production and processing apparatus according to claim 4, characterized in that: The material plate (15) has several support rods (18) evenly distributed on its surface, which are staggered with the air vents (17) and used to support the workpiece.

6. The carburized bearing steel production and processing apparatus according to claim 5, characterized in that: The upper part of the support rod (18) is detachably equipped with a limiting component (19) for limiting and blocking the workpiece.

7. The apparatus for producing and processing carburized bearing steel according to claim 1, characterized in that: The inner cavity of the outer frame (9) is provided with a central rod (12) parallel to the support rod (5). The central rod (12) is staggered with the openings (10) on both sides of the outer frame (9). The lower end face of the central rod (12) is provided with a slot (13) that is compatible with the support rod (5).

8. The apparatus for producing and processing carburized bearing steel according to claim 7, characterized in that: The support rod (5) is rotatably installed inside the carburizing furnace (3). The bottom of the carburizing furnace (3) is equipped with a motor (7). The output end of the motor (7) is sealed and penetrates into the carburizing furnace (3) and is driven by the support rod (5).

9. The carburized bearing steel production and processing apparatus according to claim 8, characterized in that: The support rod (5) is a polygonal rod structure.

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