A uniform heat treatment device for metal castings

Abstract

This utility model discloses a uniform heat treatment device for metal castings, belonging to the field of metal material heat treatment technology. Its key technical features include a quenching tank with a conveyor rail at its top and a transfer platform movably connected to its bottom. A dynamic immersion mechanism is movably connected to the bottom of the transfer platform, and a dynamic turbulence mechanism is movably connected to the inner side of the quenching tank. Continuous operation can be achieved by using the conveyor rail and transfer platform, replacing manual or fixed robotic arm single-batch operations, simplifying the process, improving efficiency, and avoiding long-term occupation of the quenching tank. Simultaneously, the dynamic up-and-down floating quenching mode breaks the vapor film barrier, enhancing the convective heat transfer between the quenching liquid and the casting. Combined with the casting flipping caused by the shaking of the support plate and metal basket, it solves the problems of weak convection, uneven temperature field, and insufficient cooling uniformity caused by thermal stress imbalance in traditional static immersion, thus improving heat exchange efficiency and thermal stress uniformity.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for metal materials, and in particular to a device for uniform heat treatment of metal castings. Background Technology

[0002] The heat treatment of metal castings requires temperature control to optimize mechanical properties. However, existing equipment is prone to uneven heating, which can lead to significant temperature differences in different areas of the casting, resulting in unstable performance, deformation, or scrap. Therefore, there is an urgent need for heat treatment equipment that can achieve uniform temperature distribution.

[0003] In existing technologies, traditional quenching uses intermittent operations, such as manual hoisting or single-batch operation with a fixed robotic arm. This results in a cumbersome process and the quenching tank being occupied for a long time due to static immersion, leading to low processing efficiency. Furthermore, the traditional static immersion quenching method causes a vapor film barrier to form on the surface of the casting, resulting in weak convection between the quenching liquid and the casting. The static nature of the liquid also leads to uneven temperature field and unbalanced thermal stress distribution, resulting in insufficient cooling uniformity.

[0004] To address this, a device for uniform heat treatment of metal castings is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a uniform heat treatment device for metal castings, which can solve the problems of existing efficiency bottlenecks and insufficient cooling uniformity.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a uniform heat treatment device for metal castings, comprising a quenching tank, a conveyor rail at the top of the quenching tank, a transfer platform movably connected to the bottom of the conveyor rail, a dynamic immersion mechanism movably connected to the bottom of the transfer platform, a dynamic turbulence mechanism movably connected to the inner side of the quenching tank, the dynamic immersion mechanism comprising a metal basket, the metal basket being disposed at the top of the quenching tank, a connecting ring hinged to the top of the metal basket, a bearing plate hinged to the top of the connecting ring, a dynamic immersion assembly movably connected to the top of the bearing plate, and the dynamic immersion assembly movably connected to the bottom of the transfer platform.

[0007] Preferably, the dynamic turbulence mechanism includes two support rods, which are fixedly connected to both sides inside the quenching tank.

[0008] Preferably, a rotating support block is rotatably connected to each of the two support rods on opposite sides, a drive motor is fixedly connected to the inner side of the rotating support block, and a spiral guide rod is fixedly connected to the output end of the drive motor.

[0009] Preferably, the top of the rotating support block is rotatably connected to an electronic telescopic rod, and the other end of the electronic telescopic rod is rotatably connected to the inner wall of the quenching tank.

[0010] Preferably, the dynamic soaking assembly includes a limiting post, which is fixedly connected to the bottom of the transfer platform. An adjusting post is slidably connected to the inner side of the limiting post, and the adjusting post is fixedly connected to the top of the support plate. A toothed groove is provided on the right side of the adjusting post.

[0011] Preferably, a servo motor is fixedly connected to the bottom of the transfer platform, and a linkage gear is fixedly connected to the output end of the servo motor. The linkage gear is meshed with the right side of the tooth groove.

[0012] Preferably, a water replenishment tank is fixedly connected to the rear side of the quenching pool.

[0013] Preferably, valve drain outlets are provided on both sides of the quenching pool.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This application, by setting up a dynamic soaking mechanism, can achieve continuous operation by carrying a transmission cloud rail and a transfer cloud platform, replacing the single-batch operation of manual or fixed robotic arms, simplifying the process, improving efficiency and avoiding long-term occupation of the quenching pool. At the same time, the dynamic up-and-down floating quenching mode breaks the vapor film barrier, enhances the convective heat transfer between the quenching liquid and the casting, and combined with the casting flipping caused by the shaking of the support plate and the metal basket, solves the problems of weak convection, uneven temperature field and insufficient cooling uniformity caused by thermal stress imbalance in traditional static soaking, and improves heat exchange efficiency and thermal stress uniformity.

[0016] 2. This application, by setting up a dynamic turbulence component, can guide the flow through four sets of spiral guide rods on both sides of the quenching pool to the position of the metal basket to form a counter-turbulence vortex. Combined with the electronic telescopic rod to adjust the angle, it optimizes the temperature field and flow field shear force, enhances liquid flow, and improves the cooling rate similar to ultrasonic oscillation. This solves the potential problems that may exist in previous dynamic quenching, such as insufficient liquid convection, uneven temperature field and limited cooling rate. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the uniform heat treatment device for metal castings of this utility model.

[0018] Figure 2 This is an overall structural diagram of the dynamic soaking mechanism of this utility model;

[0019] Figure 3 This is an overall structural diagram of the dynamic soaking component of this utility model;

[0020] Figure 4 This is an overall structural diagram of the dynamic turbulence mechanism of this utility model.

[0021] In the diagram, 1. Quenching pool; 2. Conveyor rail; 3. Transfer platform; 4. Dynamic immersion mechanism; 41. Metal basket; 42. Connecting ring; 43. Bearing plate; 44. Dynamic immersion assembly; 4401. Limiting post; 4402. Adjusting post; 4403. Gear; 4404. Servo motor; 4405. Linkage gear; 5. Dynamic turbulence mechanism; 51. Support rod; 52. Rotating support block; 53. Drive motor; 54. Spiral guide rod; 55. Electronic telescopic rod; 6. Water supply tank; 7. Valve drain outlet. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] A uniform heat treatment device for metal castings includes a quenching tank 1, a conveyor rail 2 at the top of the quenching tank 1, a transfer platform 3 movably connected to the bottom of the conveyor rail 2, a dynamic immersion mechanism 4 movably connected to the bottom of the transfer platform 3, a dynamic turbulence mechanism 5 movably connected to the inner side of the quenching tank 1, and a metal basket 41 at the top of the quenching tank 1. A connecting ring 42 is hinged to the top of the metal basket 41, a bearing plate 43 is hinged to the top of the connecting ring 42, a dynamic immersion assembly 44 is movably connected to the top of the bearing plate 43, and the dynamic immersion assembly 44 is movably connected to the bottom of the transfer platform 3.

[0025] In this embodiment: without manual or fixed robotic arm operation, the metal casting is handled by a conveyor rail 2 that covers the ceiling of the processing area at the top of the quenching tank 1. Inside the rail is a transfer platform 3 with a built-in intelligent control module. The transfer platform 3 transfers the metal basket 41 containing the metal casting from the loading end to the unloading end. It stops when passing the quenching tank 1. Personnel only need to pick up and put down the casting at the loading and unloading ends. The transfer platform 3 drives the metal basket 41 to move up and down through the dynamic immersion component 44, like splashing water, to perform dynamic quenching. This can break the vapor film on the surface of the casting, enhance the convective heat transfer between the quenching liquid and the casting, and improve the heat transfer efficiency and thermal stress uniformity.

[0026] Specifically, such as Figure 1 , Figure 4 As shown, the dynamic turbulence mechanism 5 includes two support rods 51, which are fixedly connected to both sides inside the quenching pool 1.

[0027] Specifically, such as Figure 1 , Figure 4 As shown, a rotating support block 52 is rotatably connected to one side of each of the two support rods 51. A drive motor 53 is fixedly connected to the inner side of the rotating support block 52, and a spiral guide rod 54 is fixedly connected to the output end of the drive motor 53.

[0028] Specifically, such as Figure 1 , Figure 4 As shown, an electronic telescopic rod 55 is rotatably connected to the top of the rotating support block 52, and the other end of the electronic telescopic rod 55 is rotatably connected to the inner wall of the quenching pool 1.

[0029] In this embodiment: There are four sets of spiral guide rods 54 on both sides of the inner side of the quenching pool 1. They are rotatably connected to the outside of two sets of support rods 51 on the inner walls of the left and right sides of the quenching pool 1 through rotating support blocks 52. The drive motor 53 is embedded in the inner side of the rotating support blocks 52. All four sets of spiral guide rods 54 are aligned with the position where the metal basket 41 reciprocates downward. When the metal basket 41 reciprocates downward, these spiral guide rods 54 will guide the quenching liquid on both sides, break the static state of the liquid in the quenching pool 1 and form a countercurrent vortex at the sinking point. The rotating support blocks 52 are also connected to the inner wall of the quenching pool 1 through a waterproof and corrosion-resistant electronic telescopic rod 55. The extension and retraction of the electronic telescopic rod 55 will change the angle of the rotating support blocks 52, so that the guiding direction of the spiral guide rods 54 remains unchanged but the angle changes. This adjusts the countercurrent vortex and the guiding path, thereby optimizing the temperature field uniformity and the flow field shear force. The combination of the two is similar to "ultrasonic oscillation" in industrial cleaning, which can greatly improve the cooling speed.

[0030] Specifically, such as Figure 2 , Figure 3 As shown, the dynamic soaking component 44 includes a limiting post 4401, which is fixedly connected to the bottom of the transfer platform 3. An adjusting post 4402 is slidably connected to the inner side of the limiting post 4401. The adjusting post 4402 is fixedly connected to the top of the support plate 43. A toothed groove 4403 is provided on the right side of the adjusting post 4402.

[0031] Specifically, such as Figure 2 , Figure 3 As shown, a servo motor 4404 is fixedly connected to the bottom of the transfer gimbal 3, and a linkage gear 4405 is fixedly connected to the output end of the servo motor 4404. The linkage gear 4405 is meshed with the right side of the tooth groove 4403.

[0032] In this embodiment: by activating the servo motor 4404 at the bottom of the transfer gimbal 3, the linkage gear 4405 will rotate, driving the adjusting column 4402 with a toothed groove 4403 on one side to slide along the limiting column 4401, which in turn drives the bearing plate 43, connecting ring 42 and metal basket 41 containing metal castings to move up and down, like splashing water, to achieve dynamic quenching, break the vapor film on the surface of the casting, enhance the convective heat transfer between the quenching liquid and the casting, and enhance the heat transfer efficiency and thermal stress uniformity.

[0033] Specifically, such as Figure 1 As shown, a water replenishment tank 6 is fixedly connected to the rear side of the quenching pool 1.

[0034] Specifically, such as Figure 1 As shown, valve drain ports 7 are provided on both sides of the quenching pool 1.

[0035] In this embodiment: liquid replenishment can be achieved through the internal circuit of the water replenishment tank 6 and the quenching pool 1, and waste liquid can be discharged through the drain outlets 7 on both sides.

[0036] Working Principle: In the heat treatment of metal castings, the quenching process is crucial. Traditional quenching processes are often intermittent, such as manual hoisting or fixed robotic arm operation in single batches, resulting in a cumbersome overall processing flow and low efficiency. Furthermore, traditional quenching liquid cooling relies on static immersion, with each immersion lasting five to ten minutes, leading to a long waiting period and prolonged occupation of the quenching pool 1. To avoid these issues, the metal castings are no longer hoisted manually or operated by a fixed robotic arm. Instead, a conveyor rail 2 covering the ceiling of the processing area is installed on top of the quenching pool 1. Inside the conveyor rail 2 is a transfer platform 3 with a built-in intelligent control module. This transfer platform 3 moves from the loading end to the unloading end via the conveyor rail 2, passing through the quenching pool. After positioning and sinking, the quenching operation is carried out. During this process, personnel only need to place the metal castings to be heat-treated into and remove the metal basket 41 at the loading and unloading ends. The metal basket 41 after removing the workpiece will return to the loading end along the conveyor rail 2, thus achieving continuous operation and reducing the labor intensity of personnel. After the transfer platform 3 is transported to the top center position of the quenching pool 1, it will stop immediately to carry out the quenching operation. The main quenching method is no longer the traditional static immersion, but is achieved through the following method, which mainly includes starting the servo motor 4404 located at the bottom of the transfer platform 3, which causes the linkage gear 4405 located at the output end of the servo motor 4404 to rotate. When the linkage gear 4405 rotates, it will adjust the adjusting column 4402 with a toothed groove 4403 on one side. Driven by the linkage gear 4405, the adjusting column 4402 slides downward along the limiting column 4401. At this time, the adjusting column 4402 drives the supporting plate 43 at its bottom to move downward. The supporting plate 43, through the connecting ring 42, carries a metal basket 41. The metal basket 41, along with the metal casting inside, is immersed in the quenching liquid under this drive. After the adjusting column 4402 extends to its lowest point, the servo motor 4404 adjusts its rotation direction, rotating in the opposite direction and causing the adjusting column 4402 to retract. This causes the metal basket 41 to float upward and detach from the quenching liquid surface. This process is repeated to achieve a dynamic quenching mode similar to water jetting, thereby breaking the vapor film barrier on the casting surface, enhancing the forced convection heat transfer between the quenching liquid and the casting, and achieving heat exchange... The system enhances thermal efficiency and homogenizes thermal stress. The support plate 43 and the metal basket 41 are connected by a connecting ring 42. During their up-and-down movement, the plate 43 sways, further agitating the internal castings and promoting full contact. To further enhance the dynamic quenching effect, four sets of spiral guide rods 54 are rotatably connected to the outer sides of two sets of support rods 51 on the inner walls of the left and right sides of the quenching pool 1 via rotating blocks 52. The drive motors 53 of these spiral guide rods 54 are embedded inside the rotating blocks 52. All four sets of spiral guide rods 54 are aligned with the center of the quenching pool 1, i.e., the position where the metal basket 41 reciprocates downwards. During the reciprocating downward movement of the metal basket 41, the four sets of spiral guide rods 54 guide the quenching liquid on both sides.The static state of the liquid inside the quenching tank 1 is broken, and a counter-current vortex is formed at the sinking point. Furthermore, according to the overall quenching process, the rotating support block 52 is connected to the inner wall of the quenching tank 1 by a waterproof and corrosion-resistant electronic telescopic rod 55. When the electronic telescopic rod 55 extends, the rotating support block 52 rotates downwards, and vice versa. At this time, the guiding direction of the spiral guide rod 54 remains unchanged, but the guiding angle changes, thereby adjusting the formation of the counter-current vortex and the guiding path. This allows for flexible selection, thus optimizing the uniformity of the temperature field and the shear force of the flow field. The combination of these two elements forms a principle similar to "ultrasonic oscillation" in industrial cleaning, which can significantly increase the cooling rate. In summary, this optimizes the uniform heat treatment device for metal castings.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for the uniform heat treatment of metal castings, comprising a quenching bath (1), characterized in that: The top of the quenching pool (1) is provided with a transfer rail (2), the bottom of the transfer rail (2) is movably connected to a transfer platform (3), the bottom of the transfer platform (3) is movably connected to a dynamic soaking mechanism (4), the inner side of the quenching pool (1) is movably connected to a dynamic turbulence mechanism (5), the dynamic soaking mechanism (4) includes a metal basket (41), the metal basket (41) is provided at the top of the quenching pool (1), the top of the metal basket (41) is hinged to a connecting ring (42), the top of the connecting ring (42) is hinged to a bearing plate (43), the top of the bearing plate (43) is movably connected to a dynamic soaking component (44), and the dynamic soaking component (44) is movably connected to the bottom of the transfer platform (3).

2. The uniform heat treatment apparatus for metal castings according to claim 1, characterized in that: The dynamic turbulence mechanism (5) includes two support rods (51), which are fixedly connected to both sides inside the quenching pool (1).

3. The uniform heat treatment apparatus for metal castings according to claim 2, characterized in that: Two support rods (51) are rotatably connected to a rotating support block (52) on opposite sides. A drive motor (53) is fixedly connected to the inner side of the rotating support block (52). A spiral guide rod (54) is fixedly connected to the output end of the drive motor (53).

4. The uniform heat treatment apparatus for metal castings according to claim 3, characterized in that: The top of the rotating support block (52) is rotatably connected to an electronic telescopic rod (55), and the other end of the electronic telescopic rod (55) is rotatably connected to the inner wall of the quenching pool (1).

5. The uniform heat treatment apparatus for metal castings according to claim 1, characterized in that: The dynamic soaking assembly (44) includes a limiting post (4401), which is fixedly connected to the bottom of the transfer platform (3). An adjusting post (4402) is slidably connected to the inner side of the limiting post (4401), which is fixedly connected to the top of the support plate (43). A toothed groove (4403) is provided on the right side of the adjusting post (4402).

6. The uniform heat treatment apparatus for metal castings according to claim 5, characterized in that: The bottom of the transfer platform (3) is fixedly connected to a servo motor (4404), and the output end of the servo motor (4404) is fixedly connected to a linkage gear (4405). The linkage gear (4405) is meshed with the right side of the tooth groove (4403).

7. The uniform heat treatment apparatus for metal castings according to claim 1, characterized in that: A water supply tank (6) is fixedly connected to the rear side of the quenching pool (1).

8. The uniform heat treatment apparatus for metal castings according to claim 1, characterized in that: Valve drain outlets (7) are provided on both sides of the quenching pool (1).

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