Metal heat treatment temperature uniformity control device

Abstract

The invention relates to the technical field of metal heat treatment, and discloses a metal heat treatment temperature uniformity control device which comprises a connecting bottom plate and a treatment box fixedly connected to the top end of the connecting bottom plate, a partition plate is fixedly connected to the inner side of the treatment box, and a plurality of control boxes are fixedly connected to the outer side of the partition plate; a rotating column is rotatably connected to the inner side of the control box through a bearing, a driving assembly capable of driving the rotating column to rotate is arranged on the outer side of the rotating column, a heating pipe is fixedly connected to the bottom end of the rotating column, an infrared temperature detector is fixedly connected to the bottom end of the rotating column, and a moving trolley assembly is movably connected to the top end of the connecting bottom plate. A to-be-treated metal casting part is positioned and placed at the top end of the moving trolley assembly and located below the heating pipe. The metal heat treatment temperature uniformity control device has the advantages that the metal surface heat treatment temperature can be adjusted, so that the metal surface can be uniformly heated, and the like.

Description

Technical Field

[0001] This invention relates to the field of metal heat treatment technology, specifically to a device for uniform temperature control in metal heat treatment. Background Technology

[0002] Metal heat treatment is a core process for improving the mechanical properties of workpieces. Its essence is to change the internal structure of metal by precisely controlling the temperature parameters during heating, holding and cooling to meet the needs of different applications. Whether it is engine crankshafts in the automotive industry, high-strength alloy components in the aerospace field or gear parts in precision machinery, all require strict heat treatment processes to ensure product quality.

[0003] Temperature uniformity, as a key indicator of heat treatment process, directly determines the consistency of microstructure transformation in different parts of the workpiece. If the temperature distribution in the furnace is uneven, the workpiece is prone to problems such as insufficient local hardness, deformation and cracking, or excessive dispersion of mechanical properties, which may lead to the scrapping of the workpiece in severe cases.

[0004] While existing metal heat treatment temperature control devices have achieved basic temperature regulation functions, in actual use, the gas heating regulation method is fixed, and the heating source is mostly a fixed installation structure. It can only achieve overall power regulation and cannot accurately supplement the heat for local "cold spots" or reduce the power for "hot spots". As a result, the temperature fluctuation range often exceeds ±5℃, which is difficult to meet the requirements of high-precision heat treatment. Therefore, a metal heat treatment temperature uniform control device is proposed to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a metal heat treatment temperature uniformity control device. This device allows for precise adjustment of the metal surface heat treatment temperature, ensuring uniform heating. It solves the problem that while existing metal heat treatment temperature control devices have achieved basic temperature regulation, their practical application suffers from rigid gas heating methods and fixed heating sources. These devices can only adjust overall power and cannot precisely supplement heat to localized "cold spots" or reduce power attenuation in "hot spots," resulting in temperature fluctuations exceeding ±5℃ and failing to meet the requirements of high-precision heat treatment.

[0006] (II) Technical Solution The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A metal heat treatment temperature uniform control device includes a connecting base plate and a processing box fixedly connected to the top of the connecting base plate. A partition is fixedly connected to the inner side of the processing box, and multiple control boxes are fixedly connected to the outer side of the partition plate. A rotating column is rotatably connected to the inner side of the control box via a bearing. A driving assembly capable of driving the rotating column to rotate is provided on the outer side of the rotating column. A heating tube is fixedly connected to the bottom end of the rotating column, and an infrared temperature detector is fixedly connected to the bottom end of the rotating column. A moving cart assembly is movably connected to the top of the connecting base plate. A metal casting to be treated is positioned on the top of the moving cart assembly, and the metal casting to be treated is located below the heating tube.

[0007] The beneficial effects of this invention are: This metal heat treatment temperature uniformity control device has the advantages of being able to adjust the heat treatment temperature of the metal surface, thus ensuring uniform heating.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a sealed protective door is hinged to the outside of the processing box, and a pull handle is fixedly connected to the outside of the sealed protective door. A ventilation pipe is fixedly connected to the top of the processing box, and a solenoid valve is installed on the inside of the ventilation pipe.

[0010] Furthermore, a connecting column is fixedly connected between the inner sidewall of the processing box and the control box. There are multiple connecting columns on the outer side of a single control box, which are evenly and symmetrically distributed along the length of the control box to improve the load-bearing stability of the control box. There are 3-6 heating tubes at the bottom of a single control box. All heating tubes have the same power and are arranged in a ring array at equal angles with the rotating column as the center. The heating range overlap rate of adjacent heating tubes is 15%-20%. A through hole is opened at the top of the rotating column.

[0011] Furthermore, the drive assembly includes a drive motor, a commutation assembly, a transmission worm, and a transmission worm wheel. The drive motor is fixedly connected to the top of the processing box via a motor mount, and its output shaft is keyed to the outside of the commutation assembly. The transmission worm wheel is fixedly connected to the outside of the rotating column. The transmission worm is rotatably connected to the inside of the control box, and its outside meshes with the outside of the transmission worm wheel. The drive motor drives the transmission worm to rotate via the commutation assembly.

[0012] Furthermore, the reversing assembly includes a reversing rod, a first bevel gear, and a second bevel gear. The reversing rod is fixedly connected to the end of the output shaft of the drive motor via a coupling, and its bottom end is rotatably connected to the top of the connecting base plate. The first bevel gear is fixedly connected to the outside of the reversing rod, and the second bevel gear is fixedly connected to the outside of the transmission worm. The tooth surfaces of the first bevel gear and the second bevel gear mesh without backlash.

[0013] Furthermore, the mobile vehicle assembly includes multiple horizontal plates, vertical plates, moving wheels, and a positioning shell. The horizontal plates are fixedly connected to the outside of the vertical plates, and the upper surface of each horizontal plate is at the same distance from the corresponding heating tube. The moving wheels are fixedly connected to the bottom end of the lowest horizontal plate. There are four moving wheels, which are distributed in a rectangular array at the bottom end of the lowest horizontal plate. The positioning shell is fixedly connected to the top end of the horizontal plate, and multiple auxiliary holes are provided at the top end of the horizontal plate.

[0014] Furthermore, multiple limiting rods are fixedly connected along the length of the side of the horizontal plate away from the vertical plate, and limiting sleeves corresponding to the limiting rods are welded and fixed to the outside of the partition. The limiting rods and limiting sleeves are clearance fit. The metal casting to be processed is placed at the top of the horizontal plate and located inside the positioning shell.

[0015] Furthermore, a limiting groove is formed at the top of the connecting base plate, the moving wheel is rotatably disposed inside the limiting groove, and a blocking block is fixedly connected to the outside of the vertical plate by an irregular rod, the blocking block being located inside the limiting groove.

[0016] Furthermore, it also includes a diffusion assembly, which includes a mounting shell, a mounting block, and diffusion blades. The mounting shell is fixedly connected to the bottom end of the rotating column and is coaxially arranged with the rotating column. The mounting block is detachably connected to the inside of the mounting shell by fasteners. The diffusion blades are fixedly connected to the bottom end of the mounting block. The cross-sectional area of ​​the mounting shell is adapted to the cross-sectional area of ​​the mounting block. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a connection diagram of the first and second bevel gears of the present invention; Figure 3 This is a schematic diagram of the internal structure of the processing box of the present invention; Figure 4 This is a schematic diagram of the mobile vehicle component structure of the present invention; Figure 5 This is a diagram showing the connection between the partition and the limiting sleeve of the present invention; Figure 6 This is a connection diagram of the transmission worm and transmission worm wheel of the present invention; Figure 7 This is a diagram showing the location distribution of the heating tubes in this invention; Figure 8 This is a cross-sectional view of the rotating column of the present invention.

[0018] In the diagram: 1. Connecting base plate; 2. Processing box; 3. Partition plate; 4. Control box; 5. Rotating column; 6. Drive assembly; 61. Drive motor; 62. Reversing assembly; 6201. Reversing rod; 6202. First bevel gear; 6203. Second bevel gear; 63. Transmission worm gear; 64. Transmission worm wheel; 7. Heating tube; 8. Infrared temperature detector; 9. Moving vehicle assembly; 91. Horizontal plate; 92. Vertical plate; 93. Moving wheel; 94. Positioning shell; 10. Metal casting to be processed; 11. Sealed protective door; 12. Pull handle; 13. Ventilation pipe; 14. Connecting column; 15. Through hole; 16. Limiting rod; 17. Limiting sleeve; 18. Limiting groove; 19. Blocking block; 20. Diffusion assembly; 201. Mounting shell; 202. Mounting block; 203. Diffusion fan blade. Detailed Implementation

[0019] 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.

[0020] Example 1, by Figure 1-8 A metal heat treatment temperature uniform control device is provided. The invention includes a connecting base plate 1, a treatment box 2 fixedly installed on the top of the connecting base plate 1 to form a closed heat treatment space, a partition 3 fixed inside the treatment box 2 to separate the installation area, multiple control boxes 4 evenly fixed outside the partition 3 to realize multi-position heating control, a rotating column 5 mounted on the inside of the control box 4 via bearings and able to rotate freely, a drive assembly 6 assembled on the outside of the rotating column 5 to provide rotational power, a heating tube 7 and an infrared temperature detector 8 both fixed at the bottom of the rotating column 5 and move synchronously with the rotating column 5, and a moving cart assembly 9 placed on the top of the connecting base plate 1 and able to move flexibly. After the metal casting 10 to be treated is positioned on the top of the moving cart assembly 9, the moving cart assembly 9 is pushed to move the metal casting 10 to be treated directly below the heating tube 7. The drive assembly 6 is activated to drive the rotating column 5 to rotate. The rotating column 5 simultaneously drives the heating tube 7 and the infrared temperature detector 8 to rotate. The heating tube 7 continuously generates heat to heat the metal casting 10 to be treated, and the infrared temperature detector 8 detects the surface temperature of the metal casting 10 to be treated in real time to provide feedback on the heating status.

[0021] The sealed protective door 11 is installed on the outside of the processing chamber 2 via a hinge structure. It can rotate around the hinge point to open and close the processing chamber 2. The handle 12 is fixed on the outside of the sealed protective door 11 for easy operation by the operator. The ventilation pipe 13 is vertically fixed to the top of the processing chamber 2 to realize gas exchange between the inside and outside of the chamber. The solenoid valve is installed inside the ventilation pipe 13 to control the on / off state of the ventilation pipe 13. During heat treatment, the sealed protective door 11 is closed to keep the processing chamber 2 sealed. The ventilation pipe 13 is opened or closed by the solenoid valve according to the gas state inside the chamber to regulate the gas environment.

[0022] Each rotating column 5 has an outer heating tube 7 and an infrared temperature detector 8 that are individually controlled. When the infrared temperature detector 8 detects that the temperature of the corresponding lower metal casting 10 is too high or too low, it can change the power of the corresponding upper heating tube 7 so that the metal casting 10 can be heat-treated at the most suitable temperature, thereby improving the heat treatment effect of the metal casting 10.

[0023] This application achieves all-round heating of the metal casting 10 to be processed by using multiple control boxes 4, rotating columns 5 and rotatable heating tubes 7. Infrared temperature detectors 8 monitor the temperature in real time to ensure heating accuracy. The mobile cart assembly 9 facilitates the picking, placing and positioning of the metal casting 10 to be processed. The overall structure realizes uniform temperature control during the metal heat treatment process and improves the heat treatment quality.

[0024] In this embodiment, the two ends of the connecting column 14 are fixed to the inner side wall of the processing box 2 and the outer side of the control box 4, respectively. Multiple connecting columns 14 are evenly and symmetrically arranged along the length of the control box 4 to form multi-point support for the control box 4 and prevent shaking during operation. Multiple heating tubes 7 at the bottom of a single control box 4 are distributed in a ring at equal angles around the rotating column 5, and each heating tube 7 has the same power. During operation, the heating range of adjacent heating tubes 7 overlaps to a certain extent, ensuring that there are no dead corners in the heating area and improving temperature uniformity. The through hole 15 at the top of the rotating column 5 penetrates the upper and lower end faces of the rotating column 5 and can be used to circulate airflow to ensure the overall functionality of the device.

[0025] Example 2, based on Example 1, clarifies the specific structure of the drive assembly 6. The drive assembly 6 includes a drive motor 61, a reversing assembly 62, a transmission worm 63, and a transmission worm wheel 64. The drive motor 61 is fixed to the top of the processing box 2 via a motor mount, and its output shaft is connected to the reversing assembly 62 via a key. The transmission worm wheel 64 is sleeved and fixed on the outside of the rotating column 5 and rotates synchronously with the rotating column 5. The transmission worm 63 is rotatably mounted inside the control box 4 via a bearing, and its tooth surface meshes with the tooth surface of the transmission worm wheel 64 to form a transmission engagement. After the drive motor 61 is started, the power of the output shaft is transmitted to the transmission worm 63 after the reversing assembly 62 changes the transmission direction. The rotation of the transmission worm 63 drives the meshing transmission worm wheel 64 to rotate, thereby driving the rotating column 5 to rotate.

[0026] The reversing assembly 62 includes a reversing rod 6201, a first bevel gear 6202, and a second bevel gear 6203. The top end of the reversing rod 6201 is fixedly connected to the end of the output shaft of the drive motor 61 via a coupling, and the bottom end is rotatably connected to the top end of the connecting base plate 1 via a bearing, so that the reversing rod 6201 can rotate stably. The first bevel gear 6202 is sleeved and fixed on the outside of the reversing rod 6201 and rotates synchronously with the reversing rod 6201. The second bevel gear 6203 is sleeved and fixed on the end of the transmission worm gear 63. The tooth surfaces of the first bevel gear 6202 and the second bevel gear 6203 are tightly fitted and meshed without backlash. When the drive motor 61 drives the reversing rod 6201 to rotate, the first bevel gear 6202 rotates synchronously and drives the meshed second bevel gear 6203 to rotate, thereby driving the transmission worm gear 63 to rotate.

[0027] Its drive component 6 adopts a worm gear transmission structure, which has the characteristics of stable transmission ratio and good self-locking, preventing the rotating column 5 from rotating unexpectedly. At the same time, the bevel gear meshing with no backlash ensures lossless power transmission and improves transmission accuracy. The overall transmission structure is efficient and reliable, ensuring the smooth rotation of the rotating column 5, heating tube 7, and infrared temperature detector 8, and ensuring heating uniformity and temperature detection accuracy.

[0028] In embodiment three, the mobile cart assembly 9 includes multiple horizontal plates 91, vertical plates 92, moving wheels 93, and positioning shells 94. The multiple horizontal plates 91 are fixed in parallel on the same side of the vertical plates 92 to form a multi-layer placement structure. The distance from the upper surface of each horizontal plate 91 to the corresponding heating tube 7 is kept consistent to ensure that the heating conditions of each layer of metal castings 10 to be processed are the same. Four moving wheels 93 are fixed in a rectangular array at the bottom end of the lowest horizontal plate 91, so that the mobile cart assembly 9 can move flexibly along the connecting base plate 1. The positioning shells 94 are fixed at the top of each horizontal plate 91 to limit the placement position of the metal castings 10 to be processed. Multiple auxiliary holes at the top of the horizontal plate 91 penetrate the upper and lower surfaces of the horizontal plate 91 for airflow or heat transfer. A push handle can also be installed on the outside of the vertical plate 92 to facilitate the overall movement of the mobile cart assembly 9.

[0029] The multi-layer horizontal plate 91 structure enables the simultaneous processing of multiple metal castings 10, improving processing efficiency. The consistent distance between the horizontal plate 91 and the heating tube 7 ensures uniform heating of each workpiece. The auxiliary holes promote airflow and heat transfer, further enhancing the heat treatment effect.

[0030] Based on the above structure, multiple limiting rods 16 and limiting sleeves 17 can be installed. The multiple limiting rods 16 are evenly fixed along the length direction on the side of the horizontal plate 91 away from the vertical plate 92. The limiting sleeves 17 are welded and fixed on the outside of the partition 3 and correspond one-to-one with the limiting rods 16. The limiting rods 16 can be inserted into the inside of the limiting sleeves 17 to form a clearance fit. When the moving vehicle assembly 9 is pushed into the processing box 2, the limiting rods 16 are gradually inserted into the corresponding limiting sleeves 17 to limit the moving direction of the moving vehicle assembly 9, ensuring that the moving trajectory of the moving vehicle assembly 9 is accurate and avoiding deviation that causes the distance between the metal casting 10 to be processed and the heating tube 7 to be inconsistent. The metal casting 10 to be processed is placed inside the positioning shell 94 at the top of the horizontal plate 91, and its horizontal position is limited by the positioning shell 94. Meanwhile, a limiting groove 18 is formed at the top of the connecting base plate 1, and its length direction is consistent with the moving direction of the moving vehicle assembly 9. The moving wheel 93 is placed inside the limiting groove 18 and can roll along the groove. One end of the irregular rod is fixed to the outside of the vertical plate 92, and the other end is fixedly connected to the blocking block 19. The blocking block 19 is located inside the limiting groove 18 and is opposite to the moving wheel 93. When the moving vehicle assembly 9 moves to the designated position, the blocking block 19 contacts the end of the limiting groove 18 and is located directly below the sealing protection door 11, so that hot air is prevented from being thrown out from the gap below the sealing protection door 11 during the overall use of the device, thereby improving the overall use effect of the device.

[0031] Example 4, by Figure 8 The system also includes a diffusion assembly 20, which comprises a mounting shell 201, a mounting block 202, and diffusion blades 203. The mounting shell 201 is fixed to the bottom of the rotating column 5 and is coaxially arranged with the rotating column 5. The mounting block 202 is detachably installed inside the mounting shell 201 by fasteners such as bolts. The cross-sectional areas of the two are matched to ensure a tight connection. Three to four arc-shaped diffusion blades 203 are integrally formed at the bottom of the mounting block 202. When the rotating column 5 rotates, it drives the mounting shell 201, the mounting block 202, and the diffusion blades 203 to rotate synchronously. During the rotation of the diffusion blades 203, a downward airflow is generated, which pushes the heat generated by the heating tube 7 to the surface of the metal casting 10 to be treated and diffuses it evenly, avoiding the accumulation of heat around the heating tube 7 and making the heat evenly cover the surface of the metal casting 10 to be treated, further improving the temperature uniformity.

[0032] Working principle: The operator opens the sealed protective door 11 on the outside of the processing box 2 by pulling the handle 12, places the metal casting 10 to be processed inside the positioning shell 94 at the top of the horizontal plate 91 in the moving vehicle assembly 9, pushes the vertical plate 92 to drive the moving vehicle assembly 9 to move along the limiting groove 18 at the top of the connecting base plate 1 via the moving wheels 93 at the bottom. The limiting rod 16 on one side of the horizontal plate 91 is inserted into the limiting sleeve 17 on the outside of the partition 3 for guidance until the blocking block 19 contacts the end of the limiting groove 18 to achieve positioning. At this time, the metal casting 10 to be processed is located directly below the heating tube 7. The sealing door 11 is closed to create a sealed space in the processing chamber 2. The solenoid valve inside the ventilation pipe 13 is used to control the opening and closing of the ventilation pipe 13 as needed, regulating the gas environment inside the chamber. The drive motor 61 is started, and its output shaft drives the reversing rod 6201 to rotate via a coupling. The first bevel gear 6202 on the outer side of the reversing rod 6201 meshes with the second bevel gear 6203 on the outer side of the transmission worm gear 63 without backlash, transmitting power to the transmission worm gear 63. The transmission worm gear 63 meshes with the transmission worm wheel 64 on the outer side of the rotating column 5, driving the rotating column 5 to rotate inside the control box 4 via bearings. The control box 4 is fixed to the inner wall of the processing chamber 2 via connecting column 14 to ensure rotational stability. When the rotating column 5 rotates, it drives the heating tube 7 at the bottom, the infrared temperature detector 8, and the diffuser. The diffuser assembly 20 rotates synchronously, and the heating tubes 7 are arranged in a ring array at equal angles around the rotating column 5 with consistent power. The heating ranges of adjacent heating tubes 7 partially overlap, continuously generating heat. The diffuser fan blades 203 of the diffuser assembly 20 rotate with the rotating column 5 to generate downward airflow, which evenly diffuses the heat to the surface of the metal casting 10 to be processed. The infrared temperature detector 8 detects the surface temperature of the metal casting 10 to be processed in real time and provides feedback on the heating status to accurately control the temperature. The auxiliary hole at the top of the horizontal plate 91 promotes airflow and heat transfer. The multi-layer horizontal plate 91 structure can process multiple workpieces at the same time. After the heat treatment is completed, the drive motor 61 and the heating tubes 7 are turned off, the sealed protective door 11 is opened, and the moving cart assembly 9 is pulled to remove the metal casting 10 to be processed.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for uniformly controlling the temperature of metal heat treatment, characterized in that: The system includes a connecting base plate (1) and a processing box (2) fixedly connected to the top of the connecting base plate (1). A partition (3) is fixedly connected to the inner side of the processing box (2). Multiple control boxes (4) are fixedly connected to the outer side of the partition (3). A rotating column (5) is rotatably connected to the inner side of the control box (4) via a bearing. A drive assembly (6) is provided on the outer side of the rotating column (5) to drive the rotating column (5) to rotate. A heating tube (7) is fixedly connected to the bottom end of the rotating column (5). An infrared temperature detector (8) is fixedly connected to the bottom end of the rotating column (5). A moving vehicle assembly (9) is movably connected to the top of the connecting base plate (1). A metal casting to be processed (10) is positioned on the top of the moving vehicle assembly (9). The metal casting to be processed (10) is located below the heating tube (7).

2. The metal heat treatment temperature uniformity control device according to claim 1, characterized in that: The processing box (2) is hinged to a sealed protective door (11) on the outside. A pull handle (12) is fixedly connected to the outside of the sealed protective door (11). A ventilation pipe (13) is fixedly connected to the top of the processing box (2). A solenoid valve is provided on the inside of the ventilation pipe (13).

3. The metal heat treatment temperature uniformity control device according to claim 1, characterized in that: A connecting column (14) is fixedly connected between the inner side wall of the processing box (2) and the control box (4). There are multiple connecting columns (14) on the outer side of a single control box (4), and they are evenly and symmetrically distributed along the length of the control box (4) to improve the load-bearing stability of the control box (4). There are 3-6 heating tubes (7) at the bottom of a single control box (4). All the heating tubes (7) have the same power and are distributed in an equal-angled ring array with the rotating column (5) as the center. A through hole (15) is opened at the top of the rotating column (5).

4. The metal heat treatment temperature uniformity control device according to claim 1, characterized in that: The drive assembly (6) includes a drive motor (61), a reversing assembly (62), a transmission worm (63), and a transmission worm wheel (64). The drive motor (61) is fixedly connected to the top of the processing box (2) via a motor mount, and its output shaft is keyed to the reversing assembly (62). The transmission worm wheel (64) is fixedly connected to the outside of the rotating column (5). The transmission worm (63) is rotatably connected to the inside of the control box (4), and its outside meshes with the outside of the transmission worm wheel (64). The drive motor (61) drives the transmission worm (63) to rotate via the reversing assembly (62).

5. The metal heat treatment temperature uniformity control device according to claim 4, characterized in that: The reversing assembly (62) includes a reversing rod (6201), a first bevel gear (6202), and a second bevel gear (6203). The reversing rod (6201) is fixedly connected to the end of the output shaft of the drive motor (61) via a coupling, and its bottom end is rotatably connected to the top of the connecting base plate (1). The first bevel gear (6202) is fixedly connected to the outside of the reversing rod (6201), and the second bevel gear (6203) is fixedly connected to the outside of the transmission worm (63). The tooth surfaces of the first bevel gear (6202) and the second bevel gear (6203) mesh without backlash.

6. The metal heat treatment temperature uniformity control device according to claim 1, characterized in that: The mobile vehicle assembly (9) includes multiple horizontal plates (91), vertical plates (92), moving wheels (93), and positioning shells (94). The horizontal plates (91) are fixedly connected to the outside of the vertical plates (92), and the upper surface of each horizontal plate (91) is at the same distance from the corresponding heating tube (7). The moving wheels (93) are fixedly connected to the bottom end of the lowest horizontal plate (91). The output of the moving wheels (93) is four, and they are distributed in a rectangular array at the bottom end of the lowest horizontal plate (91). The positioning shells (94) are fixedly connected to the top end of the horizontal plates (91), and multiple auxiliary holes are opened at the top end of the horizontal plates (91).

7. The metal heat treatment temperature uniformity control device according to claim 6, characterized in that: Multiple limiting rods (16) are fixedly connected along the length of the side of the horizontal plate (91) away from the vertical plate (92). A limiting sleeve (17) corresponding to the limiting rod (16) is welded and fixed on the outside of the partition plate (3). The limiting rod (16) and the limiting sleeve (17) are in clearance fit. The metal casting (10) to be processed is placed at the top of the horizontal plate (91) and located inside the positioning shell (94).

8. The metal heat treatment temperature uniformity control device according to claim 6, characterized in that: The top of the connecting base plate (1) has a limiting groove (18), the moving wheel (93) is rolled inside the limiting groove (18), and the outside of the vertical plate (92) is fixedly connected to a blocking block (19) by a special-shaped rod. The blocking block (19) is located inside the limiting groove (18).

9. A metal heat treatment temperature uniformity control device according to any one of claims 1-8, characterized in that: It also includes a diffusion component (20), which includes a mounting shell (201), a mounting block (202), and a diffusion fan blade (203). The mounting shell (201) is fixedly connected to the bottom end of the rotating column (5) and is coaxially arranged with the rotating column (5). The mounting block (202) is detachably connected to the inside of the mounting shell (201) by fasteners. The diffusion fan blade (203) is fixedly connected to the bottom end of the mounting block (202). The cross-sectional area of ​​the mounting shell (201) is adapted to the cross-sectional area of ​​the mounting block (202).

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