Bearing steel annealing furnace

Abstract

The utility model belongs to the technical field of bearing steel machining equipment, and discloses a bearing steel annealing furnace which comprises a mounting table, a feeding mechanism is mounted on one side of the mounting table, a guide rail is fixedly mounted on the mounting table and located under the tail end of the feeding mechanism, and a hydraulic push rod is mounted on the mounting table and located on one side of the guide rail. According to the bearing steel annealing device, the guide rail is additionally arranged between the feeding mechanism and the annealing mechanism, the hydraulic push rod is additionally arranged on one side of the guide rail, bearing steel to be annealed falls into the guide rail after being fed by the feeding mechanism, and the bearing steel to be annealed falls into the annealing mechanism through the hydraulic push rod; and under the pushing of the hydraulic push rod, the materials sequentially pass through the heating pipe, are uniformly heated by the externally-wound electric heating wire, enter the guide ring, are cooled and radiated under cooling nitrogen sprayed by the nitrogen pipe, and finally fall into the discharging pipe to be discharged, so that the whole process is extremely simplified, the processing efficiency is high, the annealing, heating and radiating are uniform, and the processing quality is good.

Description

Technical Field

[0001] This application relates to the field of bearing steel processing equipment technology, and more specifically, to a bearing steel annealing furnace. Background Technology

[0002] Bearing steel is used to manufacture balls, rollers, and bearing rings. It has high and uniform hardness and wear resistance, as well as a high elastic limit. It has very strict requirements for the uniformity of chemical composition, the content and distribution of non-metallic inclusions, and the distribution of carbides. It is one of the most demanding steel grades in all steel production. Annealing is an important heat treatment process in its processing. It plays an important role in reducing hardness, improving machinability, reducing residual stress, stabilizing dimensions, reducing deformation and cracking tendency, refining grains, adjusting microstructure, eliminating microstructural defects, homogenizing material microstructure and composition, improving material properties, or preparing the microstructure for subsequent heat treatment.

[0003] Chinese patent discloses an annealing furnace for processing bearing steel (authorization announcement number CN218478781U), including a cylindrical furnace body and a slide rail. The cylindrical furnace body consists of an inner furnace body, an insulated outer shell, and a hollow heat dissipation cavity, with the hollow heat dissipation cavity located between the inner furnace body and the insulated outer shell. The upper end face of the cylindrical furnace body is provided with a material inlet and outlet. This annealing furnace for processing bearing steel uses nitrogen protection to perform stress-relief annealing on the material, which can significantly reduce the decarburization layer caused by high temperature. On the other hand, the atmosphere protection allows the material to undergo annealing for a longer time to better eliminate tensile stress. Moreover, this annealing furnace is easy to operate and can anneal multiple raw materials at the same time. Nitrogen can be introduced into the cylindrical furnace body through a nitrogen tank to protect the material inside the cylindrical furnace body. The insulated furnace door can keep the cylindrical furnace body warm, saving energy. The first hydraulic telescopic rod can lift the hollow cylindrical material rack by extension, facilitating loading and unloading.

[0004] Regarding the aforementioned technologies, the inventors believe that the application suffers from drawbacks such as cumbersome loading and unloading processes and uneven heat dissipation during annealing. Utility Model Content

[0005] To address the aforementioned problems, this application provides a bearing steel annealing furnace.

[0006] The technical solution for an annealing furnace for bearing steel provided in this application is as follows:

[0007] An annealing furnace for bearing steel includes a mounting platform. A feeding mechanism is installed on one side of the mounting platform. A guide rail is fixedly installed on the mounting platform directly below the end of the feeding mechanism. A hydraulic push rod is installed on one side of the mounting platform located on the guide rail. An annealing mechanism is also installed on the other side of the mounting platform located on the guide rail.

[0008] The annealing mechanism includes a heating tube, and an electric heating wire is sleeved on the outside of the heating tube. The annealing mechanism also includes multiple guide rings, and nitrogen pipes are connected between the multiple guide rings.

[0009] The mounting platform is also equipped with a discharge pipe on the side away from the hydraulic push rod.

[0010] Through the above technical solution, the bearing steel to be annealed falls into the guide rail after being fed by the feeding mechanism. It is pushed by the hydraulic push rod and passes through the heating tube in sequence. After being uniformly heated by the externally surrounding electric heating wire, it enters the guide ring and is cooled and dissipated by the cooling nitrogen sprayed from the nitrogen pipe. Finally, it falls into the discharge pipe for discharge.

[0011] Furthermore, the end of the hydraulic push rod is provided with a push rod head, which is slidably fitted in the guide rail.

[0012] Through the above technical solution, the hydraulic push rod pushes the bearing steel material to be processed through the push rod head for the subsequent annealing process.

[0013] Furthermore, an isolation cover is installed on the mounting platform outside the annealing mechanism.

[0014] Through the above technical solution, the isolation cover can isolate the annealing mechanism from the outside world, playing a role in safety protection, while also preventing excessive oxidation caused by excessive contact between the bearing steel material and the outside air.

[0015] Furthermore, the inner layer of the guide ring is provided with multiple guide rods.

[0016] Through the above technical solution, the guide rod plays a limiting role in the bearing steel, forming a passage path for the bearing steel.

[0017] Furthermore, a nitrogen tank is fixedly installed on the lower part of the mounting platform. The nitrogen tank is connected to a nitrogen pipe, and an air jet hole is opened on the inner side of the nitrogen pipe.

[0018] Through the above technical solution, cooling nitrogen in the nitrogen tank enters the nitrogen pipe and is ejected from the jet hole to cool the heated bearing steel material.

[0019] Furthermore, the feeding mechanism includes an outer frame, and a feeding roller is rotatably connected inside the outer frame.

[0020] The above technical solution uses a feeding roller to feed and convey the tubular bearing steel material to be annealed.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This application adds a guide rail between the feeding mechanism and the annealing mechanism, and a hydraulic pusher on one side. The bearing steel to be annealed falls into the guide rail after being fed by the feeding mechanism. Under the push of the hydraulic pusher, it passes through the heating tube in sequence. After being uniformly heated by the externally surrounding electric heating wire, it enters the guide ring and is cooled and dissipated by the cooling nitrogen sprayed from the nitrogen pipe. Finally, it falls into the discharge pipe for discharge. The whole process is extremely simplified, the processing efficiency is high, and the annealing heating and heat dissipation are uniform, resulting in good processing quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the internal structure of this application;

[0025] Figure 3 This is a structural diagram of the annealing mechanism in this application.

[0026] Explanation of the labels in the diagram:

[0027] 1. Mounting platform; 2. Feeding mechanism; 201. Outer frame; 202. Feeding roller; 3. Guide rail; 4. Hydraulic push rod; 401. Push rod head; 5. Annealing mechanism; 501. Heating tube; 502. Heating wire; 503. Guide ring; 504. Nitrogen pipe; 505. Guide rod; 6. Discharge pipe; 7. Isolation cover; 8. Nitrogen tank. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses an annealing furnace for bearing steel. Please refer to [link / reference]. Figure 1 It includes a mounting platform 1, a feeding mechanism 2 is installed on one side of the mounting platform 1, a guide rail 3 is fixedly installed on the mounting platform 1 directly below the end of the feeding mechanism 2, a hydraulic push rod 4 is installed on one side of the mounting platform 1 located on the guide rail 3, and an annealing mechanism 5 is also installed on the other side of the mounting platform 1 located on the guide rail 3.

[0033] The annealing mechanism 5 includes a heating tube 501, and an electric heating wire 502 is sleeved on the outside of the heating tube 501. The annealing mechanism 5 also includes multiple guide rings 503, and a nitrogen pipe 504 is connected between the multiple guide rings 503.

[0034] The mounting platform 1 is also equipped with a discharge pipe 6 on the side away from the hydraulic push rod 4. The segmented bearing steel to be annealed falls into the guide rail 3 after being fed and transported by the feeding mechanism 2. Under the push of the hydraulic push rod 4, it passes through the heating tube 501 in sequence. After being uniformly heated by the externally surrounding electric heating wire 502, it enters the guide ring 503. Then, it is cooled and dissipated by the cooling nitrogen sprayed from the nitrogen pipe 504. Finally, it falls into the discharge pipe 6 for discharge. The whole process is extremely simplified, the processing efficiency is high, and the annealing heating and heat dissipation are uniform, resulting in good processing quality.

[0035] The hydraulic push rod 4 is equipped with a push rod head 401 at its end. The push rod head 401 is slidably fitted in the guide rail 3. After the bearing steel material to be processed is fed by the feeding mechanism 2 and falls into the guide rail 3, the hydraulic push rod 4 pushes the bearing steel material to be processed into the annealing mechanism 5 through the push rod head 401 for the subsequent annealing process.

[0036] An isolation cover 7 is installed on the mounting platform 1 outside the annealing mechanism 5. The isolation cover 7 can isolate the annealing mechanism 5 from the outside world, play a safety protection role, and at the same time prevent the bearing steel material from excessively contacting the outside air and causing excessive oxidation.

[0037] The inner layer of the guide ring 503 is provided with multiple guide rods 505, which play a role in limiting the bearing steel and forming the passage path of the bearing steel.

[0038] A nitrogen tank 8 is fixedly installed on the lower part of the mounting platform 1. The nitrogen tank 8 is connected to the nitrogen pipe 504. An air jet hole is opened on the inner side of the nitrogen pipe 504. The cooling nitrogen in the nitrogen tank 8 enters the nitrogen pipe 504 and is sprayed out through the air jet hole to cool the heated bearing steel material.

[0039] The feeding mechanism 2 includes an outer frame 201, and a feeding roller 202 is rotatably connected inside the outer frame 201. The feeding roller 202 is used to feed and convey the tubular bearing steel material to be annealed.

[0040] The implementation principle of the bearing steel annealing furnace in this application embodiment is as follows: In use, the tubular bearing steel material to be annealed is first fed by the feeding roller 202. After being fed by the feeding mechanism 2, it falls into the guide rail 3. After the bearing steel material to be processed falls into the guide rail 3, it passes through the heating tube 501 in sequence under the push of the hydraulic push rod 4. After being uniformly heated by the externally surrounding electric heating wire 502, it enters the guide ring 503. Then, the cooling nitrogen in the nitrogen tank 8 enters the nitrogen pipe 504 and is sprayed out through the jet hole to cool the heated bearing steel material. Finally, it falls into the discharge pipe 6 for discharge. The overall annealing process is extremely simplified, the processing efficiency is high, and the annealing heating and heat dissipation are uniform, resulting in good processing quality.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bearing steel annealing furnace, comprising a mounting platform (1), characterized in that: A feeding mechanism (2) is installed on one side of the mounting platform (1). A guide rail (3) is fixedly installed on the mounting platform (1) directly below the end of the feeding mechanism (2). A hydraulic push rod (4) is installed on one side of the guide rail (3) on the mounting platform (1). An annealing mechanism (5) is also installed on the other side of the guide rail (3) on the mounting platform (1). The annealing mechanism (5) includes a heating tube (501), and an electric heating wire (502) is sleeved on the outside of the heating tube (501). The annealing mechanism (5) also includes a plurality of guide rings (503), and a nitrogen pipe (504) is connected between the plurality of guide rings (503). The mounting platform (1) is also equipped with a discharge pipe (6) on the side away from the hydraulic push rod (4).

2. The bearing steel annealing furnace according to claim 1, characterized in that: The hydraulic push rod (4) is provided with a push rod head (401) at its end, and the push rod head (401) is slidably fitted in the guide rail (3).

3. The bearing steel annealing furnace according to claim 1, characterized in that: An isolation cover (7) is installed on the mounting platform (1) outside the annealing mechanism (5).

4. The bearing steel annealing furnace according to claim 1, characterized in that: The inner layer of the guide ring (503) is provided with multiple guide rods (505).

5. The bearing steel annealing furnace according to claim 1, characterized in that: A nitrogen tank (8) is fixedly installed on the lower part of the mounting platform (1). The nitrogen tank (8) is connected to a nitrogen pipe (504). An air jet hole is opened on the inner side of the nitrogen pipe (504).

6. The bearing steel annealing furnace according to claim 1, characterized in that: The feeding mechanism (2) includes an outer frame (201), and a feeding roller (202) is rotatably connected inside the outer frame (201).

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