Nitriding heat treatment device for steel parts

Abstract

The utility model relates to the technical field of heat treatment equipment, in particular to a nitriding heat treatment device for steel parts, which can be used for more conveniently taking and placing the steel parts, improving the air circulation in a furnace, improving the nitriding effect of the steel parts and improving the practicability. Comprising a nitriding heat treatment furnace, the left end of the nitriding heat treatment furnace communicates with a gas inlet pipe for ammonia gas to enter, the right end of the nitriding heat treatment furnace is provided with a taking and placing opening, the top end of a furnace door is fixedly connected with a lug plate, and the left side of the top end of the nitriding heat treatment furnace is fixedly provided with a first motor; guide frames are fixedly connected to the middles of the front end and the rear end of the nitriding heat treatment furnace, the right ends of the guide frames are aligned with the right end of the nitriding heat treatment furnace, guide plates are fixedly connected to the front end and the rear end of the furnace door, the two guide plates are slidably mounted in the two guide frames correspondingly, and the second motor is fixedly mounted at the right end of the furnace door and used for treating steel parts.

Description

Technical Field

[0001] This utility model relates to the technical field of heat treatment equipment, and in particular to a nitriding heat treatment device for steel parts. Background Technology

[0002] During the processing of steel parts, nitriding heat treatment is sometimes performed as needed to enhance the hardness, wear resistance, and fatigue strength of the steel parts, thereby improving their performance and service life.

[0003] Nitriding heat treatment is a chemical heat treatment process in which parts are placed in a sealed heat treatment furnace and heated while ammonia gas is introduced. The ammonia gas decomposes into active nitrogen atoms, which are absorbed by the surface of the workpiece and form nitrides with alloying elements such as aluminum, chromium, and molybdenum in the steel. These nitrides then diffuse toward the core, forming a nitrided layer of a certain thickness.

[0004] Existing nitriding heat treatment equipment is not convenient for handling steel parts. The steel parts are placed statically in the nitriding heat treatment furnace, resulting in poor air circulation inside the furnace. The static placement of the steel parts affects the nitriding effect and makes it impractical. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a nitriding heat treatment device for steel parts that makes it easier to pick up and put down steel parts, improves the air circulation inside the furnace, improves the nitriding effect of steel parts, and enhances practicality.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a nitriding heat treatment device for steel parts, comprising a nitriding heat treatment furnace, an opening and closing mechanism, and a processing mechanism. The left end of the nitriding heat treatment furnace is connected to an inlet pipe for ammonia gas entry, and the right end of the furnace has a loading / unloading port. The opening and closing mechanism includes a furnace door, with an ear plate fixedly connected to the top of the door. A motor is fixedly installed on the left side of the top of the nitriding heat treatment furnace, and a transmission screw is fixedly connected to the output end of the motor. A threaded sleeve is screwed onto the transmission screw, and the right end of the threaded sleeve is fixedly connected to the left end of the ear plate. The furnace door cover is installed on the loading / unloading port at the right end of the nitriding heat treatment furnace. Guide frames are fixedly connected to the middle of both the front and rear ends of the nitriding heat treatment furnace. The right end of the frame is aligned with the right end of the nitriding heat treatment furnace. Guide plates are fixedly connected to both the front and rear ends of the furnace door. Two sets of guide plates are slidably installed in two sets of guide frames. The processing mechanism includes a second motor, which is fixedly installed at the right end of the furnace door. A drive shaft is fixedly connected to the output end of the second motor. The drive shaft is rotatably installed on the furnace door. A drive bevel gear is fixedly connected to the left end of the drive shaft. A support plate is fixedly connected to the left end of the furnace door. A rotating shaft is rotatably installed on the support plate. The rotating shaft is located in the center inside the nitriding heat treatment furnace. A driven bevel gear is fixedly connected to the bottom end of the rotating shaft. The driven bevel gear meshes with the drive bevel gear. A tray is fixedly connected to the top end of the rotating shaft. Two sets of circulating fans are symmetrically fixedly installed on the top of the nitriding heat treatment furnace.

[0008] Preferably, the top of the tray has multiple sets of ribs of different lengths fixed at equal intervals. The ribs are integrally formed with the tray, and each set of ribs has multiple ventilation holes.

[0009] Preferably, limit posts are fixed on the left side of both the upper and lower ends of the two sets of guide plates, and limit grooves are opened at both the upper and lower ends of the two sets of guide frames. The two sets of guide plates are slidably installed in the two sets of guide frames respectively through the cooperation of the limit posts and the limit grooves.

[0010] Preferably, two sets of support frames are fixedly connected symmetrically at the bottom of the furnace door, and support wheels are rotatably installed on both sets of support frames.

[0011] Preferably, the bottom end of the support plate and the left end of the furnace door are symmetrically fixedly connected by two sets of reinforcing rods.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, by starting motor one, the motor drives the transmission screw to rotate clockwise, causing the transmission screw to push the furnace door to move to the right through the connection between the threaded sleeve and the ear plate. The furnace door then drives the guide plate to slide to the right along the guide frame, causing the furnace door to move the support plate to the right. This, in turn, causes the support plate to move the tray out of the loading / unloading port. The steel parts to be processed are then placed on the tray. Motor one drives the transmission screw to rotate counterclockwise, causing the furnace door to return the support plate and tray to the inside of the nitriding heat treatment furnace. The steel parts are then subjected to nitriding heat treatment in the nitriding heat treatment furnace. Motor two and... The circulating fan, by starting motor two, can drive the tray to rotate slowly, thus causing the tray to carry the steel parts to rotate slowly. By starting the circulating fan, the flow of hot air inside the nitriding heat treatment furnace is enhanced, making the temperature inside the nitriding heat treatment furnace more uniform. The rotation of the steel parts ensures that the surface of the steel parts is heated evenly and in uniform contact with ammonia gas. Driven by motor one, the tray carries the steel parts in and out, making it easier to pick up and put away the steel parts. The rotation of the tray carrying the steel parts, along with the circulating fan, circulates the air inside the nitriding heat treatment furnace, improving the air circulation inside the furnace, improving the nitriding effect of the steel parts, and enhancing practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the left axonometric cross-sectional structure of this utility model;

[0015] Figure 3 This is a utility model Figure 2 A schematic diagram of the right-side view structure;

[0016] Figure 4 This is an isometric structural diagram of the tray in this utility model;

[0017] Figure 5 This is an exploded structural diagram of the guide plate and guide frame in this utility model;

[0018] The following are labels in the attached diagram: 1. Nitriding heat treatment furnace; 2. Furnace door; 3. Motor 1; 4. Drive screw; 5. Threaded sleeve; 6. Ear plate; 7. Guide frame; 8. Guide plate; 9. Motor 2; 10. Drive shaft; 11. Driving bevel gear; 12. Support plate; 13. Rotating shaft; 14. Driven bevel gear; 15. Tray; 16. Circulating fan; 17. Rib; 18. Ventilation hole; 19. Limiting post; 20. Limiting groove; 21. Support frame; 22. Support wheel; 23. Reinforcing rod. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0020] Example

[0021] Please see Figures 1-5This utility model discloses a nitriding heat treatment device for steel parts, comprising a nitriding heat treatment furnace 1, a furnace door 2, and a motor 3. The left end of the nitriding heat treatment furnace 1 is connected to an inlet pipe for ammonia gas entry. The right end of the nitriding heat treatment furnace 1 has a loading / unloading port. An ear plate 6 is fixedly connected to the top of the furnace door 2. A motor 3 is fixedly installed on the left side of the top of the nitriding heat treatment furnace 1. A transmission screw 4 is fixedly connected to the output end of the motor 3. A threaded sleeve 5 is screwed onto the transmission screw 4. The right end of the threaded sleeve 5 is fixedly connected to the left end of the ear plate 6. The furnace door 2 is fitted onto the loading / unloading port on the right end of the nitriding heat treatment furnace 1. Guide frames 7 are fixedly connected to the middle of both the front and rear ends of the nitriding heat treatment furnace 1. The right end of the guide frame 7 is connected to the right end of the nitriding heat treatment furnace 1. The furnace door 2 is aligned at both ends, with guide plates 8 fixedly connected to both the front and rear ends. Two sets of guide plates 8 are slidably installed in two sets of guide frames 7. Motor 2 9 is fixedly installed on the right end of the furnace door 2. A drive shaft 10 is fixedly connected to the output end of motor 2 9. The drive shaft 10 is rotatably mounted on the furnace door 2. A driving bevel gear 11 is fixedly connected to the left end of the drive shaft 10. A support plate 12 is fixedly connected to the left end of the furnace door 2. A rotating shaft 13 is rotatably mounted on the support plate 12. The rotating shaft 13 is located in the center inside the nitriding heat treatment furnace 1. A driven bevel gear 14 is fixedly connected to the bottom end of the rotating shaft 13. The driven bevel gear 14 meshes with the driving bevel gear 11. A tray 15 is fixedly connected to the top end of the rotating shaft 13. The top end of the nitriding heat treatment furnace 1 is aligned with... The furnace is equipped with two sets of circulating fans 16. During operation, starting motor 3 causes the transmission screw 4 to rotate clockwise. This, through the connection between the threaded sleeve 5 and the ear plate 6, pushes the furnace door 2 to the right. The furnace door 2 then moves the guide plate 8 along the guide frame 7 to the right, causing the furnace door 2 to move the support plate 12 to the right. This, in turn, moves the support plate 12 and the tray 15 out of the loading / unloading port. The steel parts to be processed are then placed on the tray 15. Motor 3 then drives the transmission screw 4 to rotate counterclockwise, causing the furnace door 2 to return the support plate 12 and the tray 15 to the nitriding heat treatment furnace 1. The steel parts are then subjected to nitriding heat treatment in the nitriding heat treatment furnace 1. The electric motor is then started. Motor 2 (9) and circulating fan 16, by starting motor 2 (9), can drive tray 15 to rotate slowly, thereby causing tray 15 to carry steel parts to rotate slowly. By starting circulating fan 16, the flow of hot air inside nitriding heat treatment furnace 1 is enhanced, making the internal temperature of nitriding heat treatment furnace 1 more uniform. The rotation of steel parts ensures that the surface of the steel parts is heated evenly and in uniform contact with ammonia gas. Driven by motor 1 (3), tray 15 carries steel parts in and out, making it more convenient to pick up and put away steel parts. The rotation of tray 15 carrying steel parts and the circulation of air inside nitriding heat treatment furnace 1 by circulating fan 16 improve the air circulation inside the furnace, improve the nitriding effect of steel parts, and enhance practicality.

[0022] Multiple sets of ribs 17 of varying lengths are fixed at equal intervals at the top of the tray 15. The ribs 17 are integrally formed with the tray 15, and each set of ribs 17 has multiple ventilation holes 18. When placing steel parts, the ribs 17 can support the bottom of the steel parts, making the bottom of the steel parts suspended. The ventilation holes 18 can promote the flow of air at the bottom of the steel parts, further improving the nitriding treatment effect.

[0023] Limiting posts 19 are fixed on the left side of both the upper and lower ends of the two sets of guide plates 8, and limiting grooves 20 are opened at both the upper and lower ends of the two sets of guide frames 7. The two sets of guide plates 8 are slidably installed in the two sets of guide frames 7 through the cooperation of the limiting posts 19 and the limiting grooves 20. By setting the limiting posts 19 and the limiting grooves 20, when the guide plate 8 slides to the right along the guide frame 7, the guide plate 8 drives the limiting posts 19 to slide to the right along the limiting grooves 20. Through the cooperation of the limiting posts 19 and the limiting grooves 20, the guide plate 8 is limited to prevent the guide plate 8 from detaching from the guide frame 7.

[0024] Two sets of support frames 21 are symmetrically fixedly connected to the bottom end of the furnace door 2. Support wheels 22 are rotatably installed on both sets of support frames 21. By setting the support frames 21 and support wheels 22, the bottom end of the support wheels 22 is supported by the ground. When the furnace door 2 is pushed to the right, the support frames 21 and support wheels 22 support the furnace door 2, thereby effectively preventing the furnace door 2 from falling and making the furnace door 2 move more stably.

[0025] Two sets of reinforcing rods 23 are symmetrically fixedly connected between the bottom end of the support plate 12 and the left end of the furnace door 2. By setting the reinforcing rods 23, the support plate 12 can be supported, making the connection between the support plate 12 and the furnace door 2 more firm and stable.

[0026] This utility model discloses a nitriding heat treatment device for steel parts. Its working principle is as follows: When in use, starting motor 3 causes the transmission screw 4 to rotate clockwise. The transmission screw 4, connected to the ear plate 6 via the threaded sleeve 5, pushes the furnace door 2 to the right. The furnace door 2 then causes the guide plate 8 to slide to the right along the guide frame 7, causing the furnace door 2 to move the support plate 12 to the right. This, in turn, causes the support plate 12 to move the tray 15 out of the loading / unloading port. The steel parts to be treated are then placed on the tray 15. Motor 3 then drives the transmission screw 4 to rotate counterclockwise, causing the furnace door 2 to return the support plate 12 and tray 15 to the nitriding heat treatment furnace 1. The steel parts are then subjected to nitriding heat treatment in the nitriding heat treatment furnace 1. Simultaneously, starting motor 9 and the circulating fan 16 causes motor 9 to drive... The drive shaft 10 rotates, and the drive shaft 10 drives the rotating shaft 13 to rotate through the meshing of the active bevel gear 11 and the driven bevel gear 14. In turn, the rotating shaft 13 drives the tray 15 to rotate. The driven bevel gear 14 is larger than the active bevel gear 11, which allows the tray 15 to rotate slowly. This allows the tray 15 to carry the steel parts to rotate slowly. By starting the circulating fan 16, the flow of hot air inside the nitriding heat treatment furnace 1 is enhanced, making the temperature inside the nitriding heat treatment furnace 1 more uniform. Through the rotation of the steel parts, the surface of the steel parts is heated evenly and comes into uniform contact with ammonia gas, so that the steel parts can better complete the nitriding heat treatment. The nitriding heat treatment furnace 1 in this application is prior art. Its specific structure and working principle are well known to those skilled in the art of nitriding heat treatment, so it will not be described in detail here.

[0027] The nitriding heat treatment device for steel parts of this utility model has common mechanical installation, connection and setting methods, and can be implemented as long as it can achieve its beneficial effect. The motor 3, motor 9 and circulating fan 16 of the nitriding heat treatment device for steel parts of this utility model are purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A nitriding heat treatment apparatus for steel parts, comprising a nitriding heat treatment furnace (1), wherein the left end of the nitriding heat treatment furnace (1) is connected to an inlet pipe for ammonia gas entry, and the right end of the nitriding heat treatment furnace (1) is provided with an inlet / outlet port, characterized in that, It also includes opening and closing mechanisms and processing mechanisms; The opening and closing mechanism includes a furnace door (2), an ear plate (6) is fixedly connected to the top of the furnace door (2), a motor (3) is fixedly installed on the left side of the top of the nitriding heat treatment furnace (1), a transmission screw (4) is fixedly connected to the output end of the motor (3), a threaded sleeve (5) is screwed on the transmission screw (4), the right end of the threaded sleeve (5) is fixedly connected to the left end of the ear plate (6), the furnace door (2) is covered on the take-out port on the right end of the nitriding heat treatment furnace (1), a guide frame (7) is fixedly connected to the middle of both the front and rear ends of the nitriding heat treatment furnace (1), the right end of the guide frame (7) is aligned with the right end of the nitriding heat treatment furnace (1), and a guide plate (8) is fixedly connected to both the front and rear ends of the furnace door (2), and the two sets of guide plates (8) are slidably installed in the two sets of guide frames (7); The processing mechanism includes a second motor (9), which is fixedly installed on the right end of the furnace door (2) and is used to process steel parts.

2. The nitriding heat treatment apparatus for steel parts as described in claim 1, characterized in that, The output end of the second motor (9) is fixedly connected to a drive shaft (10). The drive shaft (10) is rotatably mounted on the furnace door (2). The left end of the drive shaft (10) is fixedly connected to an active bevel gear (11). The left end of the furnace door (2) is fixedly connected to a support plate (12). A rotating shaft (13) is rotatably mounted on the support plate (12). The rotating shaft (13) is located in the center inside the nitriding heat treatment furnace (1). The bottom end of the rotating shaft (13) is fixedly connected to a driven bevel gear (14). The driven bevel gear (14) meshes with the active bevel gear (11). The top end of the rotating shaft (13) is fixedly connected to a tray (15). Two sets of circulating fans (16) are symmetrically fixedly mounted on the top end of the nitriding heat treatment furnace (1).

3. A steel part nitriding heat treatment apparatus as claimed in claim 2, characterized in that, The top of the tray (15) is fixed with multiple sets of ribs (17) of different lengths at equal intervals. The ribs (17) are integrally formed with the tray (15), and each set of ribs (17) has multiple ventilation holes (18).

4. A steel part nitriding heat treatment apparatus as claimed in claim 3, characterized in that, Limiting posts (19) are fixed on the left side of both the upper and lower ends of the two sets of guide plates (8), and limiting grooves (20) are opened at both the upper and lower ends of the two sets of guide frames (7). The two sets of guide plates (8) are slidably installed in the two sets of guide frames (7) through the cooperation of the limiting posts (19) and the limiting grooves (20).

5. The nitriding heat treatment apparatus for steel parts as described in claim 4, characterized in that, The furnace door (2) is fixedly connected to two sets of support frames (21) symmetrically at the bottom front and back, and support wheels (22) are rotatably installed on both sets of support frames (21).

6. The nitriding heat treatment apparatus for steel parts as described in claim 5, characterized in that, Two sets of reinforcing rods (23) are fixedly connected symmetrically between the bottom end of the support plate (12) and the left end of the furnace door (2).

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