Large-volume forged steel part heat treatment system integrating gas protection and temperature control

Abstract

The invention discloses a large-size forged steel part heat treatment system integrating gas protection and temperature control, and relates to the field of forged steel part heat treatment, the large-size forged steel part heat treatment system specifically comprises a heat treatment box, the two sides in the heat treatment box are each provided with an induction copper pipe frame, and the outer side of the heat treatment box is provided with a moving assembly for driving a large-size forged steel part to move; in the heat treatment and transfer links of the large-volume forged steel part, the treatment effect on the oxide skin problem is prominent, that is, during heat treatment, protective gas is continuously blown in, a protective film is formed on the surface of the forged steel part to isolate air, oxide skin generation is greatly reduced from the source, the cleaning cost is reduced, the finish degree and precision of the forged steel part are guaranteed, and the finished product quality is improved; and in the transferring process, the L-shaped high-strength plate is used for driving to move, the oxide skin is synchronously collected into the collecting tank through the removing plate, the oxide skin is prevented from scattering and flying in the production field, pollution and abrasion of the oxide skin to equipment are reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology for forged steel parts, and more specifically, to a heat treatment system for large-volume forged steel parts that integrates gas protection and temperature control. Background Technology

[0002] In the production and processing of large-volume forged steel parts, heat treatment is the core process to improve their performance and quality, but traditional heat treatment technology faces many challenges.

[0003] For example, in the process of fixing forged steel parts, due to the large differences in shape and size of large-volume forged steel parts, traditional fixing methods are difficult to accurately adapt to forged steel parts of different specifications. During movement and heat treatment, forged steel parts are prone to shaking and displacement, which not only threatens processing safety, but also leads to uneven heat treatment, resulting in inconsistent performance of different parts of the forged steel parts, which seriously affects the quality of the finished product. At the same time, conventional heating is prone to local overheating or underheating, resulting in inconsistent internal structure transformation and weakening the mechanical properties of the forged steel parts. In order to achieve uniform heating, the heating time can only be extended, reducing heat treatment efficiency and increasing production costs. Furthermore, when the surface of the forged steel parts is heated, it comes into contact with air and generates oxide scale, which increases cleaning costs, damages surface quality, and reduces smoothness and precision. Moreover, during the transfer process, the oxide scale is easily scattered and blown away, polluting equipment and the environment, shortening equipment life and deteriorating the working environment. To address this, the present invention proposes a heat treatment system for large-volume forged steel parts that integrates gas protection and temperature control, in order to solve traditional technical problems and achieve an efficient and high-quality heat treatment process for large-volume forged steel parts. Summary of the Invention

[0004] To overcome the above-mentioned defects of the prior art, the present invention provides a heat treatment system for large-volume forged steel parts that integrates gas protection and temperature control.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heat treatment system for large-volume forged steel parts that integrates gas protection and temperature control, including a heat treatment chamber, wherein induction copper tube racks are provided on both sides inside the heat treatment chamber, a moving component for moving the large-volume forged steel parts is provided on the outside of the heat treatment chamber, and a material cooling component for cooling the large-volume forged steel parts during unloading is also provided on the outside of the heat treatment chamber. The moving assembly includes two sets of inner moving plates, which are slidably connected at their tops by a connecting column. An outer moving plate is fixedly mounted at the end of the connecting column. An electric moving wheel is mounted below the outer moving plate, and a slide rail is mounted below the electric moving wheel and slidably connected to it. One end of the slide rail extends into the heat treatment chamber. A three-jaw chuck is rotatably mounted in the middle of the inner moving plate, and a control motor for driving the three-jaw chuck to rotate is mounted on one set of the inner moving plates. The inner moving plate and the outer moving plate are connected in the middle by a hydraulic cylinder. One set of the inner moving plates has a collection plate for collecting oxide scale on the bottom side wall, and the other set of the inner moving plates has a slot that slides with the collection plate. The outer side of the collection plate has a collection trough for centralized recovery of oxide scale.

[0006] Furthermore, two jet pipes are symmetrically arranged inside the heat treatment chamber, and nozzles are provided on the bottom wall of the jet pipes to blow protective gas onto the wall of large-volume forged steel parts.

[0007] Furthermore, a gas supply component is installed above the heat treatment chamber, and the gas supply component is connected to the jet pipe.

[0008] Furthermore, the material cooling assembly includes a water collection tank connected to the slide rail, a translation frame is provided above the water collection tank, a threaded rod is provided on one side of the translation frame to drive its movement, and both ends of the threaded rod are rotatably connected to the water collection tank, and a motor is provided on the water collection tank to drive the threaded rod to rotate.

[0009] Furthermore, the other side of the translation frame is provided with a limiting rod for limiting its sliding, and the limiting rod is fixedly connected to the water collection tank.

[0010] Furthermore, an L-shaped high-strength plate is fixedly installed on the translation frame. Above the L-shaped high-strength plate, multiple sets of L-shaped moving frames for limiting the movement of large-volume forged steel parts are rotatably connected by a hydraulic cylinder. The ends of the multiple sets of L-shaped moving frames are jointly provided with a cleaning plate for removing oxide scale.

[0011] Furthermore, a water spray device is connected above the water collection tank via a lifting rod, and the water spray device is arranged parallel to the water collection tank.

[0012] Furthermore, a quenching machine for induction heating is provided on the outside of the induction copper tube frame.

[0013] The heat treatment steps of this integrated gas protection and temperature control system for large-volume forged steel parts are as follows: Forged steel parts fixing: Move the large-volume forged steel parts between the two- or three-jaw chucks, and then extend the hydraulic cylinder to fix them; Forged steel heating: The moving component feeds the forged steel into the heat treatment box, the induction copper tube frame is heated, the motor above the three-jaw chuck drives the rotation, and protective gas is blown to reduce oxidation; Forged steel parts handover: After heating, move the forged steel parts to the unloading position, turn the threaded rod, and position the L-shaped high-strength plate with the L-shaped moving frame. Then, retract the hydraulic cylinder for handover. Cooling of forged steel parts: The second hydraulic cylinder retracts to tilt the L-shaped moving frame upward, and the translation frame moves to the water spray part to cool it into martensite.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention relates to the heat treatment process of large-volume forged steel parts. First, a hydraulic cylinder is used to extend and fix the forged steel part, ensuring precision, stability, and strong adaptability. This effectively prevents the forged steel part from shaking or shifting during movement and heat treatment, ensuring processing safety and laying the foundation for subsequent uniform heat treatment, thus improving the quality of the finished product. Second, a motor is controlled to drive the forged steel part to rotate within the heat treatment chamber, ensuring that all parts are heated evenly. This solves the problem of uneven heating in traditional methods, significantly shortens heating time, improves heat treatment efficiency, ensures uniform internal microstructure transformation, and enhances the mechanical properties of the forged steel part. Finally, a protective gas is continuously blown in during heating to form a protective film on the surface of the forged steel part, isolating it from air, reducing oxide scale formation, lowering cleaning costs, avoiding damage to surface quality from oxide scale, and ensuring the smoothness and precision of the forged steel part.

[0015] 2. This invention involves heating a large-volume forged steel part, then using a moving component, threaded rod, and translation frame to first transfer the forged steel part from a three-jaw chuck to an L-shaped moving frame. The angle of the L-shaped moving frame is then adjusted to prevent it from falling. Finally, the part is moved under a water-spraying component to cool into high-hardness martensite. Simultaneously, as the L-shaped high-strength plate moves the L-shaped moving frame, oxide scale is collected. During the forged steel part transfer process, the moving cleaning plate collects the oxide scale into a collection tank in a timely manner, preventing it from scattering and accumulating on the production site. This reduces pollution to equipment and the environment caused by flying oxide scale, extends equipment lifespan, and improves the working environment.

[0016] 3. This invention demonstrates outstanding effectiveness in addressing oxide scale issues during the heat treatment and transfer of large-volume forged steel parts. Specifically, during heat treatment, a protective gas is continuously blown in, forming a protective film on the surface of the forged steel part to isolate it from the air. This significantly reduces oxide scale formation at the source, lowers cleaning costs, ensures the smoothness and precision of the forged steel parts, and improves the quality of the finished product. During the transfer process, an L-shaped high-strength plate drives the movement, while a cleaning plate simultaneously collects the oxide scale into a collection tank, preventing it from scattering and flying around on the production site. This not only reduces oxide scale contamination and wear on equipment but also extends the equipment's service life. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of the present invention.

[0018] Figure 2 This is a perspective view of the movable component in this invention.

[0019] Figure 3 This is a perspective view of the external structure of the material feeding and cooling assembly in this invention.

[0020] Figure 4 A three-dimensional view of the internal structure of a large-volume forged steel part being moved into a heat treatment chamber.

[0021] Figure 5This is a side view of the overall structure of the present invention.

[0022] Figure 6 This is a top view of the overall structure of the present invention.

[0023] The attached diagram is labeled as follows: 1. Heat treatment box; 2. Quenching machine; 3. Gas supply component; 41. Outer moving plate; 42. Three-jaw chuck; 43. Inner moving plate; 44. Connecting column; 45. Electric moving wheel; 46. Collection plate; 47. Slot; 48. Collection trough; 49. Hydraulic cylinder one; 51. L-shaped high-strength plate; 52. L-shaped moving frame; 53. Hydraulic cylinder two; 54. Translation frame; 55. Threaded rod; 56. Limiting rod; 57. Water spray component; 58. Water collection pool; 6. Air jet pipe; 7. Induction copper pipe frame. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-6 As shown, in the existing technology, traditional fixing methods are difficult to accurately adapt to forged steel parts of different specifications. During movement and heat treatment, the forged steel parts are prone to shaking and displacement, which not only threatens processing safety but also leads to uneven heat treatment. The following solutions can be used to address this issue: The heat treatment system for large-volume forged steel parts in this embodiment, which integrates gas protection and temperature control, includes a heat treatment box 1. Both sides of the heat treatment box 1 are provided with induction copper tube racks 7. The outside of the heat treatment box 1 is provided with a moving component that drives the large-volume forged steel parts to move. The outside of the heat treatment box 1 is also provided with a material cooling component for cooling the large-volume forged steel parts before unloading. The moving assembly includes two sets of inner moving plates 43. The tops of the two sets of inner moving plates 43 are slidably engaged with each other by a connecting column 44. An outer moving plate 41 is fixedly provided at the end of the connecting column 44. An electric moving wheel 45 is provided below the outer moving plate 41. A slide rail is provided below the electric moving wheel 45 and slidably engaged with it. One end of the slide rail passes through the heat treatment box 1. A three-jaw chuck 42 is rotatably provided in the middle of the inner moving plate 43. A control motor for driving the three-jaw chuck 42 to rotate is provided on one set of inner moving plates 43. The inner moving plate 43 and the outer moving plate 41 are connected in the middle by a hydraulic cylinder 49. A collection plate 46 for collecting oxide scale is provided on the bottom side wall of one set of inner moving plates 43. A slot 47 for slidably engaging with the collection plate 46 is provided on the other set of inner moving plates 43. A collection trough 48 for centralized recovery of oxide scale is provided on the outside of the collection plate 46. The large-volume forged steel part is then moved between two three-jaw chucks 42 by external equipment, and the hydraulic cylinder 49 is extended to fix the large-volume forged steel part. Then, it is moved into the heat treatment chamber 1 by the moving component, and heated by the induction copper tube frame 7. The control motor above the three-jaw chuck 42 drives the large-volume forged steel part to rotate inside the heat treatment chamber 1 to ensure the uniformity of the heating of the large-volume forged steel part. Two jet pipes 6 are symmetrically arranged inside the heat treatment chamber 1. The bottom wall of the jet pipe 6 is equipped with a nozzle for blowing protective gas onto the wall of the large-volume forged steel parts. A gas supply component 3 is installed above the heat treatment chamber 1. The gas supply component 3 is connected to the jet pipe 6. During the heating process, protective gas is continuously blown in to reduce the generation of oxide scale on the surface of the large-volume forged steel parts. In summary: The large-volume forged steel parts are moved between two three-jaw chucks 42 with the help of external equipment, and fixed by the extension of hydraulic cylinder 49. Then, the forged steel parts are sent into the heat treatment chamber 1 by the moving component. They are heated by the induction copper tube frame 7, and the motor is controlled to drive the forged steel parts to rotate in the heat treatment chamber 1 to ensure uniform heating. During the heating period, protective gas is continuously blown in to reduce the formation of oxide scale on the surface of the forged steel parts. Large-volume forged steel parts are fixed by extending a hydraulic cylinder 49. This fixing method is precise and stable. Compared with traditional fixing methods, it is better adapted to large-volume forged steel parts of different shapes and sizes. It effectively avoids shaking or displacement of the forged steel parts during movement and heat treatment, ensuring the safety of processing, ensuring the uniformity and consistency of subsequent heat treatment effects, and improving the finished quality of the forged steel parts. The control motor drives the large-volume forged steel parts to rotate inside the heat treatment chamber 1, so that all parts of the forged steel parts can be fully and evenly heated by the induction copper tube frame 7. This design breaks the problem of uneven local heating that may exist in traditional heating methods, greatly shortens the overall heating time, improves the heat treatment efficiency, and at the same time ensures the uniformity of the internal structure transformation of the forged steel parts, thereby improving the mechanical properties of the forged steel parts. During the heating process, a protective gas is continuously blown in, which can form a protective film on the surface of the forged steel parts, effectively isolating them from the air and significantly reducing the generation of oxide scale. This not only reduces the workload and cost of subsequent oxide scale removal, but also avoids damage to the surface quality of the forged steel parts caused by incomplete oxide scale removal, ensuring the smoothness and precision of the forged steel parts surface.

[0026] Example 2: Please refer to Figures 1-6 As shown, the formation of oxide scale on the surface of forged steel parts during heating due to contact with air increases cleaning costs, damages surface quality, reduces smoothness and precision, and causes the oxide scale to easily scatter and fly during transfer, polluting equipment and the environment. The following solutions can be used to address these issues: The material cooling assembly includes a water collection tank 58 connected to a slide rail. A translation frame 54 is provided above the water collection tank 58. A threaded rod 55 is provided on one side of the translation frame 54 to drive its movement. Both ends of the threaded rod 55 are rotatably connected to the water collection tank 58. A motor is provided on the water collection tank 58 to drive the threaded rod 55 to rotate. A limiting rod 56 is provided on the other side of the translation frame 54 to limit its sliding. The limiting rod 56 is fixedly connected to the water collection tank 58. An L-shaped high-strength plate 51 is fixedly installed on the translation frame 54. Above the L-shaped high-strength plate 51, multiple sets of L-shaped moving frames 52 that limit the movement of large-volume forged steel parts are rotatably connected by a hydraulic cylinder 53. The ends of the multiple sets of L-shaped moving frames 52 are provided with a cleaning plate for removing oxide scale. A water spray component 57 is connected above the water collection tank 58 via a lifting rod. The water spray component 57 is set parallel to the water collection tank 58 and is used to cool large-volume forged steel parts. The outer side of the induction copper tube frame 7 is provided with a quenching machine 2 for induction heating. The quenching machine 2 is a prior art functional device that has a heating function for the aforementioned induction copper tube frame 7. In this embodiment: after the large-volume forged steel part is heated, it is moved to the unloading position by the moving component. The threaded rod 55 is controlled to rotate, and the translation frame 54 is moved to one side of the water collection tank 58. The L-shaped high-strength plate 51 drives multiple sets of L-shaped moving frames 52 to move below the large-volume forged steel part. Then, the hydraulic cylinder 49 is controlled to retract, and the two sets of three-jaw chucks 42 move away from each other, so that the large-volume forged steel part falls above the multiple sets of L-shaped moving frames 52, completing the handover of the large-volume forged steel part. Subsequently, the hydraulic cylinder 53 retracts, so that the angle of the L-shaped moving frame 52 changes and tilts upward to prevent the large-volume forged steel part from falling during translation. Then, the translation frame 54 moves the large-volume forged steel part to the water spray component 57 for cooling, rapid cooling, and transformation into high-hardness martensite. As the L-shaped high-strength plate 51 moves multiple sets of L-shaped moving frames 52 to the bottom of the large-volume forged steel part, the cleaning plate slides above the oxide scale collection plate 46, simultaneously pushing all the oxide scale on it into the collection tank 48, which facilitates the recovery of oxide scale.

[0027] In summary: After heating, the large-volume forged steel parts are transferred from the three-jaw chuck 42 to the L-shaped moving frame 52 using the moving components, threaded rod 55, and translation frame 54. The angle of the L-shaped moving frame 52 is then adjusted to prevent it from falling. Finally, it is moved to the area below the water spray component 57 to cool into high-hardness martensite. During the movement of the L-shaped high-strength plate 51 and the L-shaped moving frame 52, the oxide scale is collected simultaneously. In the forged steel part transfer process, the oxide scale is collected in the collection tank 48 in a timely manner by the moving cleaning plate, preventing it from scattering and accumulating on the production site, reducing pollution to equipment and the environment caused by flying oxide scale, extending the service life of the equipment, and improving the working environment.

[0028] In this invention, as can be seen from Embodiment 1 and Embodiment 2: In the heat treatment and transfer process of large-volume forged steel parts, the treatment of oxide scale is highly effective. During heat treatment, a protective gas is continuously blown in to form a protective film on the surface of the forged steel parts, isolating them from the air. This significantly reduces oxide scale formation at the source, lowers cleaning costs, ensures the smoothness and precision of the forged steel parts, and improves the quality of the finished product. During the transfer process, an L-shaped high-strength plate is used to move the parts, and a cleaning plate is used to collect the oxide scale into the collection tank 48 simultaneously, preventing the oxide scale from scattering and flying around on the production site. This not only reduces the pollution and wear of the equipment by the oxide scale but also extends the service life of the equipment.

[0029] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A heat treatment system for large-volume forged steel parts integrating gas protection and temperature control, comprising a heat treatment chamber (1), characterized in that, Both sides of the heat treatment box (1) are provided with induction copper tube racks (7), the outside of the heat treatment box (1) is provided with a moving component that drives the large-volume forged steel parts to move, and the outside of the heat treatment box (1) is also provided with a material cooling component for cooling the large-volume forged steel parts. The moving assembly includes two sets of inner moving plates (43), the tops of the two sets of inner moving plates (43) are slidably connected by a connecting column (44), an outer moving plate (41) is fixedly provided at the end of the connecting column (44), an electric moving wheel (45) is provided below the outer moving plate (41), a slide rail is provided below the electric moving wheel (45) and slidably connected to it, one end of the slide rail extends into the heat treatment box (1), a three-jaw chuck (42) is rotatably provided in the middle of the inner moving plate (43), and a control motor for driving the three-jaw chuck (42) to rotate is provided on one set of inner moving plates (43); The inner moving plate (43) and the outer moving plate (41) are connected in the middle by a hydraulic cylinder (49). One set of the inner moving plates (43) has a collection plate (46) for collecting oxide scale on its bottom side wall. Another set of the inner moving plates (43) has a slot (47) that slides with the collection plate (46). The outer side of the collection plate (46) has a collection trough (48) for collecting oxide scale.

2. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 1, characterized in that: The heat treatment chamber (1) is symmetrically equipped with two jet pipes (6), and the bottom wall of the jet pipes (6) is equipped with nozzles for blowing protective gas onto the wall of large-volume forged steel parts.

3. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 1, characterized in that: A gas supply component (3) is installed above the heat treatment box (1), and the gas supply component (3) is connected to the jet pipe (6).

4. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 1, characterized in that: The material cooling assembly includes a water collection tank (58) connected to a slide rail. A translation frame (54) is provided above the water collection tank (58). A threaded rod (55) is provided on one side of the translation frame (54) to drive its movement. Both ends of the threaded rod (55) are rotatably connected to the water collection tank (58). A motor for driving the threaded rod (55) to rotate is provided on the water collection tank (58).

5. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 4, characterized in that: The other side of the translation frame (54) is provided with a limiting rod (56) for limiting its sliding, and the limiting rod (56) is fixedly connected to the water collection tank (58).

6. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 5, characterized in that: An L-shaped high-strength plate (51) is fixedly provided on the translation frame (54). Above the L-shaped high-strength plate (51), multiple sets of L-shaped moving frames (52) for limiting the movement of large-volume forged steel parts are rotatably connected by a hydraulic cylinder (53). The ends of the multiple sets of L-shaped moving frames (52) are provided with a cleaning plate for removing oxide scale.

7. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 5, characterized in that: A water spray element (57) is connected above the water collection tank (58) via a lifting rod, and the water spray element (57) is arranged parallel to the water collection tank (58).

8. The heat treatment system for large-volume forged steel parts integrating gas protection and temperature control according to claim 1, characterized in that: The outside of the induction copper tube frame (7) is provided with a quenching machine (2) for induction heating.

9. The heat treatment system for large-volume forged steel parts with integrated gas protection and temperature control according to any one of claims 1-8, characterized in that: The heat treatment steps of this integrated gas protection and temperature control system for heat treatment of large-volume forged steel parts are as follows: Forged steel parts fixing: Move the large volume forged steel parts to the two- or three-jaw chuck (42), and extend and fix the hydraulic cylinder (49); Forged steel heating: The moving component sends the forged steel into the heat treatment box (1), the induction copper tube rack (7) heats it, the motor above the three-jaw chuck (42) drives the rotation, and the protective gas is blown to reduce oxidation; Forged steel parts handover: After heating, move the forged steel parts to the unloading position, turn the threaded rod (55), and the L-shaped high-strength plate (51) with the L-shaped moving frame (52) is in place. The hydraulic cylinder is retracted (49) for handover. Cooling of forged steel parts: The second hydraulic cylinder (53) is contracted to tilt the L-shaped moving frame (52) upward, and the translation frame (54) moves to the water spray part (57) to cool into martensite.

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