Steel ball machining tempering device

Abstract

The invention relates to the technical field of steel ball production, in particular to a steel ball machining tempering device which comprises an inner heat preservation frame, a shell is fixedly installed on the outer side of the inner heat preservation frame, a first sealing cover is movably installed at the front end of the shell, and a second sealing cover is installed at the rear end of the shell in an embedded mode; holes are formed in the two sides of the shell correspondingly, an air inlet pipe and an exhaust pipe are embedded in the holes, the top of the air inlet pipe communicates with an air injection assembly, and the top of the exhaust pipe communicates with a safety valve; the first sealing cover is movably installed at the front end of the shell through a clamping mechanism, a groove is formed in the middle of the front face of the first sealing cover, an observation window is embedded in the first sealing cover, and a groove is formed in the front face of the second sealing cover, and a sealing door is movably installed through a positioning assembly; the opposite sides of the first sealing cover and the second sealing cover make contact with the inner heat preservation frame but are not fixedly connected with the inner heat preservation frame. According to the invention, the oxidation problem of the steel balls in the tempering process can be effectively controlled and reduced, and the quality and performance of the tempered steel balls are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of steel ball production, in particular to a steel ball processing and tempering device. Background Art

[0002] Tempering is an important step in the heat treatment of metals. It is usually carried out after quenching. Its purpose is to eliminate the internal stress generated during the quenching process and optimize the metal's structure and properties through precise temperature control. The tempering temperature, time and cooling method will have a significant impact on the final metal properties.

[0003] In the production of steel balls, the tempering process is particularly critical because it is directly related to the hardness, toughness and service life of the steel balls. According to the search results, the tempering process can be divided into low-temperature tempering, medium-temperature tempering and high-temperature tempering, and each tempering method has its specific application scenarios and effects. For example, low-temperature tempering (150-250°C) is mainly used to maintain high hardness and wear resistance, suitable for tools and cutting tools; medium-temperature tempering (350-500°C) aims to obtain higher elasticity and yield point; and high-temperature tempering (500-650°C) is used to obtain comprehensive mechanical properties with good strength, plasticity and toughness.

[0004] After extensive searching, the publication number is CN114807575A, which discloses a steel ball tempering device, in which the auxiliary tempering box can perform preparatory work when the main tempering box is working. After the tempering of the steel balls in the main tempering box is completed, the hot gas in the main tempering box is pumped into the auxiliary tempering box, and the auxiliary tempering box starts to work at this time. After the tempering of the steel balls in the auxiliary tempering box is completed, the heat energy in the auxiliary tempering box is pumped into the main tempering box. The main tempering box and the auxiliary tempering box adopt intermittent work, so that the heat in the tempering box can be reused after the tempering of the steel balls is completed.

[0005] When the steel balls are processed by the above device, the steel balls that are kept warm or slowly cooled in the tempering furnace are exposed to hot air rich in oxygen and have not undergone surface anti-oxidation treatment, so oxides are easily formed on the surface. This not only reduces the tempering quality of the finished steel balls, but also, in the case of severe oxidation, the steel balls may need to be returned to the furnace for remanufacturing, which undoubtedly increases production costs and time. Therefore, a steel ball processing tempering device is needed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a steel ball processing and tempering device, which can effectively solve the problems in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a steel ball processing and tempering device, comprising an inner insulation frame, a shell is fixedly installed on the outer side of the inner insulation frame, a first sealing cover is movably installed on the front end of the shell, and a second sealing cover is embedded and installed on the rear end of the shell;

[0008] The inner top of the inner heat preservation frame is provided with an installation groove, the front and rear ends of the top of the installation groove are respectively provided with reserved grooves, a heating component is embedded and installed in the installation groove, and through holes are provided on both sides of the outer wall of the inner heat preservation frame;

[0009] The two sides of the shell are respectively opened with holes and embedded with an air intake pipe and an exhaust pipe, the top of the air intake pipe is connected to an air injection component, and the top of the exhaust pipe is connected to a safety valve;

[0010] The gas injection assembly comprises a three-way pipe, the bottom end of the three-way pipe is connected to the air inlet pipe, and the two ends of the three-way pipe are connected to the first check valve and the second check valve through the first connecting pipe and the second connecting pipe respectively.

[0011] The first sealing cover is movably installed at the front end of the shell through a clamping mechanism, a groove is opened in the middle of the front side of the first sealing cover and an observation window is embedded and installed, a groove is opened on the front side of the second sealing cover and a sealing door is movably installed through a positioning assembly, and the first sealing cover and the second sealing cover are in contact with the inner insulation rack on opposite sides but are not fixedly connected.

[0012] Specifically, a grille frame is embedded and installed at the lower inner side of the inner insulation frame, the grille frame is designed with ceramic material, the front and rear ends of the inner insulation frame are both designed with open structures, and the outer wall of the inner insulation frame is in contact with the inner wall of the shell but not fixedly connected.

[0013] By adopting the above technical solution, it is ensured that the grid frame will not be deformed or damaged under extreme working conditions, thereby ensuring the continuity and stability of the entire tempering process.

[0014] Specifically, a sealing block is embedded in the reserved groove and is designed with asbestos material. The upper end surface of the sealing block contacts the top of the inner wall of the shell but is not fixedly connected. The lower end surface of the sealing block is flush with the bottom of the inner side of the installation groove. A longitudinal through hole is opened on the sealing block.

[0015] By adopting the above technical solution, the high-efficiency heat insulation performance of the asbestos sealing block is utilized to effectively isolate the influence of the high temperature in the furnace on the external components and protect the overall structure of the equipment from heat damage. At the same time, its good sealing performance ensures the stability of the furnace environment and provides ideal conditions for the uniform tempering of the steel balls.

[0016] Specifically, reserved holes are respectively opened at the front and rear ends of the shell top, and the positions of the reserved holes match the installation positions of the sealing blocks. Support frames are respectively fixedly installed at the front and rear ends of the shell bottom, and universal wheels are fixedly installed at the bottom of the support frames, and brake devices are fixedly installed on the universal wheels.

[0017] By adopting the above technical solution, the equipment can be easily moved and positioned by using the support frame and universal wheels at the bottom of the shell. The equipment with brake device can be quickly locked when the position needs to be fixed, ensuring the stability and safety during operation.

[0018] Specifically, the positions where the intake pipe and the exhaust pipe are embedded and installed match the positions where the through holes are opened, and the opposite ends of the intake pipe and the exhaust pipe are respectively inserted into the through holes, and ceramic sealing rings are installed on the opposite sides of the intake pipe and the exhaust pipe to the through holes.

[0019] By adopting the above technical solution, the intake and exhaust pipes are matched with the through holes and combined with the use of ceramic sealing rings, not only the sealing of the gas pipeline is enhanced, but also the corrosion resistance and wear resistance of the equipment are improved. This design reduces the risk of gas leakage and ensures thermal efficiency and operational safety during the tempering process.

[0020] Specifically, the heating assembly includes a control panel, which is fixedly mounted on the top of the shell. A fin heater is installed below the control panel through a control line. The fin heater is embedded in a mounting groove, and the bottom height of the fin heater is higher than the top height of the inner side of the inner insulation frame.

[0021] By adopting the above technical solutions, the control panel and fin heater provide an intelligent temperature control solution, allowing operators to accurately adjust the temperature according to the specific requirements of the tempering process. This intelligent control not only improves heating efficiency, but also ensures the consistency and repeatability of tempering quality.

[0022] Specifically, the control wire installed on the fin heater passes through the holes and the reserved holes on the sealing block from bottom to top, and the protective layer on the outside of the control wire is designed with stainless steel material.

[0023] By adopting the above technical solution, the stainless steel protective layer design on the outside of the control line not only provides physical protection for the line, but also prevents line damage caused by environmental factors. This design ensures the long-term stable operation of the control line, reduces maintenance costs and potential safety hazards.

[0024] Specifically, the first check valve and the second check valve are connected and installed via a gas pipe and a helium gas tank and a nitrogen gas tank, respectively, and the first check valve and the second check valve are both designed with pure copper material.

[0025] By adopting the above technical solution, the first check valve and the second check valve utilize the wear resistance and corrosion resistance of copper to ensure the accuracy and reliability of gas control. This material selection improves the durability of the valve, reduces maintenance requirements, and also improves the safety of the entire system.

[0026] Specifically, the observation window and the sealing door have matching sizes, the installation heights of the observation window and the sealing door are both higher than the installation height of the grille frame, and high-temperature resistant transparent glass is embedded in the observation window.

[0027] By adopting the above technical solution, the observation window of high temperature resistant transparent glass provides a clear line of sight, allowing operators to monitor the situation in the furnace in real time and adjust the process parameters in time. This design not only improves the convenience of operation, but also provides a safe observation environment for operators. At the same time, the height limit of the observation window and the sealing door also facilitates the subsequent removal of the steel ball.

[0028] Specifically, the positioning assembly includes a connecting plate, which is fixedly mounted on the front of the second sealing cover. A positioning frame is fixedly mounted on the front of the connecting plate. A limiting frame is slidably mounted on the positioning frame. The sealing door is limitedly mounted on the inner side of the second sealing cover through the limiting frame.

[0029] By adopting the above technical solutions and the precise design of the positioning components, the stable installation and smooth operation of the sealing door are ensured. This stability is essential to maintain the consistency of the furnace environment, and it also improves the durability of the equipment and the reliability of the sealing operation. Through these designs, the performance of the entire tempering device has been significantly improved, ensuring the high quality of steel ball processing and high efficiency of operation.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The present invention can effectively isolate the steel ball from oxygen by introducing a protective atmosphere, such as nitrogen or helium, during the heating process, thereby reducing or avoiding the occurrence of oxidation. The protective atmosphere can be pure nitrogen or a mixed gas containing a certain proportion of inert gas, which can form a protective film on the surface of the steel ball to prevent oxidation and maintain the surface finish of the steel ball. At the same time, the heating component in the device includes a control panel and a fin heater, which can achieve precise control of the tempering temperature. The tempering temperature can be set and adjusted through the control panel to ensure that the steel ball is tempered at a suitable temperature and reduce the possibility of oxidation at high temperature;

[0032] The design of the first sealing cover and the second sealing cover ensures the sealing of the furnace environment during the tempering process, prevents oxygen in the outside air from entering the furnace, and reduces the oxidation of the steel balls during the tempering process. The grid frame is designed with ceramic material, which has excellent high temperature resistance and oxidation resistance, and helps the gas to cover the steel balls in all directions, thereby improving the oxidation resistance of the entire tempering process. Through these comprehensive measures, the above-mentioned steel ball processing and tempering device can effectively control and reduce the oxidation problem of the steel balls during the tempering process, and ensure the quality and performance of the steel balls after tempering. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the heating component of the present invention;

[0035] Figure 3 It is a schematic diagram of the front view structure of the housing of the present invention;

[0036] Figure 4 It is a schematic diagram of the rear view structure of the housing of the present invention;

[0037] Figure 5 For the present invention Figure 4 The structural diagram of the enlarged part in the middle;

[0038] Figure 6 It is a schematic diagram of the structure of the inner insulation frame of the present invention;

[0039] Figure 7 It is a schematic diagram of the cross-sectional structure of the inner heat preservation frame of the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the gas injection assembly of the present invention.

[0041] In the figure: 1. Shell; 11. Reserved hole; 12. Inlet pipe; 13. Clamping mechanism; 14. Support frame; 15. First sealing cover; 16. Exhaust pipe; 17. Sealing door; 18. Second sealing cover; 19. Positioning assembly; 101. Universal wheel; 102. Observation window; 103. Connecting plate; 104. Limiting frame; 105. Positioning frame; 2. Heating assembly; 21. Control panel; 22. Fin heater; 23. Sealing block; 201. Control line; 3. Gas injection assembly; 31. Three-way pipe; 32. First check valve; 33. Second check valve; 301. First connecting pipe; 302. Second connecting pipe; 4. Inner insulation frame; 41. Reserved groove; 42. Through hole; 43. Grille frame; 44. Mounting groove; 5. Safety valve. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Example

[0044] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention provides: a steel ball processing and tempering device, comprising an inner heat preservation frame 4, a shell 1 is fixedly installed on the outer side of the inner heat preservation frame 4, a first sealing cover 15 is movably installed on the front end of the shell 1, and a second sealing cover 18 is embedded and installed on the rear end of the shell 1;

[0045] The inner top of the inner heat preservation frame 4 is provided with a mounting groove 44, and the front and rear ends of the top of the mounting groove 44 are respectively provided with reserved grooves 41, and the heating component 2 is embedded and installed in the mounting groove 44, and through holes 42 are provided on both sides of the outer wall of the inner heat preservation frame 4;

[0046] Holes are respectively opened on both sides of the shell 1 and embedded with an air inlet pipe 12 and an exhaust pipe 16. The top of the air inlet pipe 12 is connected to a gas injection assembly 3, and the top of the exhaust pipe 16 is connected to a safety valve 5.

[0047] The gas injection assembly 3 includes a three-way pipe 31, the bottom end of the three-way pipe 31 is connected to the air inlet pipe 12, and the two ends of the three-way pipe 31 are connected to the first check valve 32 and the second check valve 33 through the first connecting pipe 301 and the second connecting pipe 302 respectively.

[0048] The first sealing cover 15 is movably mounted on the front end of the shell 1 through a clamping mechanism 13. The first sealing cover 15 has a groove in the middle of the front and an observation window 102 is embedded and installed. The second sealing cover 18 has a groove on the front and a sealing door 17 is movably installed through a positioning assembly 19. The first sealing cover 15 and the second sealing cover 18 are in contact with the inner insulation rack 4 on opposite sides but are not fixedly connected.

[0049] Specifically, during the heating process, a protective atmosphere, such as nitrogen or helium, is introduced to effectively isolate the steel ball from oxygen, reducing or avoiding the occurrence of oxidation. This protective atmosphere can be pure nitrogen or a mixed gas containing a certain proportion of inert gas, which can form a protective film on the surface of the steel ball to prevent oxidation and maintain the surface finish of the steel ball. At the same time, the heating component 2 in the device includes a control panel 21 and a fin heater 22, which can achieve precise control of the tempering temperature. The tempering temperature can be set and adjusted through the control panel 21 to ensure that the steel ball is tempered at a suitable temperature and reduce the possibility of oxidation at high temperature;

[0050] The design of the first sealing cover 15 and the second sealing cover 18 ensures the sealing of the furnace environment during the tempering process, preventing oxygen in the outside air from entering the furnace, thereby reducing the oxidation of the steel balls during the tempering process. The grid frame 43 is designed with ceramic material, which has excellent high temperature resistance and anti-oxidation properties, and helps the gas to cover the steel balls in all directions, thereby improving the anti-oxidation ability of the entire tempering process.

[0051] Through these comprehensive measures, the steel ball processing and tempering device can effectively control and reduce the oxidation problem of the steel ball during the tempering process, and ensure the quality and performance of the steel ball after tempering.

[0052] In order to ensure the continuity and stability of the entire tempering process, for example, Figure 2 , Figure 6 and Figure 7 As shown, the present invention also includes a grille frame 43 embedded in the lower inner side of the inner insulation frame 4, the grille frame 43 is designed with a ceramic material, the front and rear ends of the inner insulation frame 4 are both designed with an open structure, and the outer wall of the inner insulation frame 4 is in contact with the inner wall of the shell 1 but not fixedly connected.

[0053] During use, it is ensured that the grid frame 43 will not be deformed or damaged under extreme working conditions, thereby ensuring the continuity and stability of the entire tempering process.

[0054] A sealing block 23 is embedded in the reserved groove 41 . The sealing block 23 is made of asbestos. The upper end surface of the sealing block 23 contacts the top of the inner wall of the shell 1 but is not fixedly connected. The lower end surface of the sealing block 23 is flush with the inner bottom of the installation groove 44 . A longitudinal through hole is opened on the sealing block 23 .

[0055] When in use, the high-efficiency heat insulation performance of the asbestos sealing block 23 is utilized to effectively isolate the influence of the high temperature in the furnace on the external components, and protect the overall structure of the equipment from heat damage. At the same time, its good sealing performance ensures the stability of the furnace environment, providing ideal conditions for the uniform tempering of the steel balls.

[0056] Reserved holes 11 are respectively provided at the front and rear ends of the top of the shell 1, and the positions of the reserved holes 11 match the installation positions of the sealing blocks 23. Support frames 14 are respectively fixedly installed at the front and rear ends of the bottom of the shell 1, and universal wheels 101 are fixedly installed at the bottom of the support frames 14, and brake devices are fixedly installed on the universal wheels 101.

[0057] When in use, the device can be easily moved and positioned by using the support frame 14 and the universal wheel 101 at the bottom of the housing 1. The brake device can be quickly locked when the device needs to be fixed, ensuring stability and safety during operation.

[0058] In order to reduce the risk of gas leakage and ensure thermal efficiency and operational safety during the tempering process, for example, Figure 3 and Figure 6 As shown, the present invention also includes that the positions where the intake pipe 12 and the exhaust pipe 16 are embedded and installed match the positions where the through hole 42 is opened, the opposite ends of the intake pipe 12 and the exhaust pipe 16 are respectively inserted into the through hole 42, and the intake pipe 12 and the exhaust pipe 16 are provided with ceramic sealing rings on the sides opposite to the through hole 42.

[0059] When in use, the inlet pipe 12 and the exhaust pipe 16 are matched with the through hole 42 and combined with the use of a ceramic sealing ring, which not only enhances the sealing of the gas pipeline, but also improves the corrosion resistance and wear resistance of the equipment. This design reduces the risk of gas leakage and ensures thermal efficiency and operational safety during the tempering process.

[0060] In order to improve the heating efficiency and ensure the consistency and repeatability of the tempering quality, for example, Figure 2 As shown, the present invention also includes that the heating component 2 includes a control panel 21, the control panel 21 is fixedly installed on the top of the shell 1, a fin heater 22 is installed below the control panel 21 through a control line 201, the fin heater 22 is embedded in the installation groove 44, and the bottom height of the fin heater 22 is higher than the top height of the inner side of the inner insulation rack 4.

[0061] When in use, the control panel 21 and the fin heater 22 provide an intelligent temperature control solution, allowing the operator to accurately adjust the temperature according to the specific requirements of the tempering process. This intelligent control not only improves the heating efficiency, but also ensures the consistency and repeatability of the tempering quality.

[0062] The control line 201 installed on the fin heater 22 passes through the holes on the sealing block 23 and the reserved hole 11 from bottom to top in sequence, and the protective layer on the outside of the control line 201 is designed with stainless steel material.

[0063] When in use, the stainless steel protective layer design on the outside of the control line 201 not only provides physical protection for the line, but also prevents the line from being damaged due to environmental factors. This design ensures the long-term stable operation of the control line 201, reduces maintenance costs and potential safety hazards.

[0064] In order to improve the security of the entire system, for example, Figure 8 As shown, the present invention also includes that the first check valve 32 and the second check valve 33 are connected and installed through a gas pipe and a helium gas tank and a nitrogen gas tank respectively, and the first check valve 32 and the second check valve 33 are both designed with pure copper material.

[0065] When in use, the first check valve 32 and the second check valve 33 utilize the wear resistance and corrosion resistance of copper to ensure the accuracy and reliability of gas control. This material selection improves the durability of the valve, reduces maintenance requirements, and also improves the safety of the entire system.

[0066] For the durability of the equipment and the reliability of the sealing operation, exemplary, Figures 3 to 5 As shown, the present invention also includes that the size of the observation window 102 matches that of the sealing door 17 , the installation heights of the observation window 102 and the sealing door 17 are both higher than the installation height of the grille frame 43 , and high temperature resistant transparent glass is embedded in the observation window 102 .

[0067] When in use, the observation window 102 of high temperature resistant transparent glass provides a clear line of sight, allowing the operator to monitor the situation in the furnace in real time and adjust the process parameters in time. This design not only improves the convenience of operation, but also provides a safe observation environment for the operator. At the same time, the height limit of the observation window 102 and the sealing door 17 also facilitates the subsequent removal of the steel ball.

[0068] The positioning assembly 19 includes a connecting plate 103, which is fixedly mounted on the front of the second sealing cover 18. A positioning frame 105 is fixedly mounted on the front of the connecting plate 103. A limiting frame 104 is slidably mounted on the positioning frame 105. The sealing door 17 is limitedly mounted on the inner side of the second sealing cover 18 by the limiting frame 104.

[0069] When in use, the precise design of the positioning assembly 19 ensures the stable installation and smooth operation of the sealing door 17. This stability is essential for maintaining the consistency of the furnace environment, while also improving the durability of the equipment and the reliability of the sealing operation. Through these designs, the performance of the entire tempering device has been significantly improved, ensuring the high quality of steel ball processing and high efficiency of operation.

[0070] When the present invention is used, ensure that all power sources and gas sources are connected and ready, embed the sealing block 23 into the reserved groove 41, ensure that its upper end surface is in contact with the top of the inner wall of the shell 1, and the lower end surface is flush with the inner bottom of the installation groove 44, install the fin heater 22 on the heating component 2 into the installation groove 44 of the inner insulation frame 4, confirm that the air inlet pipe 12 and the exhaust pipe 16 are correctly embedded in the through hole 42, and the ceramic sealing ring is installed in place, check whether the safety valve 5 and the three-way pipe 31, the first check valve 32 and the second check valve 33 connected thereto are correctly installed, ensure the correct direction of gas flow, install the first sealing cover 15 to the front end of the shell 1 through the clamping mechanism 13, ensure that the observation window 102 can be used normally, and install the second sealing cover 18 and the sealing door 17 to the rear end of the shell 1 through the positioning component 19;

[0071] Open the sealed door 17, place the steel ball to be tempered on the grid rack 43 in the inner insulation rack 4, operate the control panel 21, start the fin heater 22 to start heating, monitor the tempering state of the steel ball through the observation window 102 to ensure uniform heating, open the gas injection component 3, and inject protective gas, such as nitrogen or helium, into the furnace through the air inlet pipe 12 to protect the steel ball from oxidation during the tempering process. After the tempering is completed, turn off the heating component 2 and the gas supply, wait for the steel ball to cool naturally or forcefully cool as needed, open the sealed door 17, and take out the tempered steel ball. If the equipment needs to be moved, the universal wheels 101 and the brake device at the bottom can be used for operation.

Claims

1. A steel ball processing and tempering device, comprising an inner heat preservation frame (4), a shell (1) is fixedly installed on the outer side of the inner heat preservation frame (4), a first sealing cover (15) is movably installed on the front end of the shell (1), and a second sealing cover (18) is embedded and installed on the rear end of the shell (1), characterized in that: The inner top of the inner heat preservation frame (4) is provided with a mounting groove (44), the front and rear ends of the top of the mounting groove (44) are respectively provided with reserved grooves (41), the heating component (2) is embedded and installed in the mounting groove (44), and through holes (42) are provided on both sides of the outer wall of the inner heat preservation frame (4); Holes are respectively opened on both sides of the shell (1) and an air inlet pipe (12) and an exhaust pipe (16) are embedded and installed therein; the top of the air inlet pipe (12) is connected to and installed with an air injection assembly (3); the top of the exhaust pipe (16) is connected to and installed with a safety valve (5); The gas injection assembly (3) comprises a three-way pipe (31), the bottom end of the three-way pipe (31) is connected to the air inlet pipe (12), and the two ends of the three-way pipe (31) are connected to the first check valve (32) and the second check valve (33) through the first connecting pipe (301) and the second connecting pipe (302), respectively. The first sealing cover (15) is movably mounted on the front end of the housing (1) via a snap-fit ​​mechanism (13); a groove is formed in the middle of the front face of the first sealing cover (15) and an observation window (102) is embedded therein; a groove is formed on the front face of the second sealing cover (18) and a sealing door (17) is movably mounted thereon via a positioning assembly (19); opposite sides of the first sealing cover (15) and the second sealing cover (18) are in contact with the inner heat preservation rack (4) but are not fixedly connected thereto.

2. A steel ball processing and tempering device according to claim 1, characterized in that: A grille frame (43) is embedded and installed at the lower inner side of the inner heat preservation frame (4); the grille frame (43) is made of ceramic material; both the front and rear ends of the inner heat preservation frame (4) are designed with an open structure; the outer wall of the inner heat preservation frame (4) is in contact with the inner wall of the shell (1) but is not fixedly connected.

3. A steel ball processing and tempering device according to claim 1, characterized in that: A sealing block (23) is embedded and installed in the reserved groove (41). The sealing block (23) is designed with asbestos material. The upper end surface of the sealing block (23) contacts the top of the inner wall of the shell (1) but is not fixedly connected. The lower end surface of the sealing block (23) is flush with the inner bottom of the installation groove (44). A longitudinal through hole is opened on the sealing block (23).

4. A steel ball processing and tempering device according to claim 1, characterized in that: The housing (1) is provided with reserved holes (11) at the front and rear ends of the top, respectively, and the positions of the reserved holes (11) match the installation positions of the sealing blocks (23). The housing (1) is provided with support frames (14) at the front and rear ends of the bottom, respectively, and a universal wheel (101) is fixedly installed at the bottom of the support frame (14), and a brake device is fixedly installed on the universal wheel (101).

5. The steel ball processing and tempering device according to claim 1, characterized in that: The positions at which the intake pipe (12) and the exhaust pipe (16) are embedded and installed match the positions at which the through hole (42) is opened; opposite ends of the intake pipe (12) and the exhaust pipe (16) are respectively inserted into the through hole (42); and ceramic sealing rings are mounted on the opposite sides of the intake pipe (12) and the exhaust pipe (16) to the through hole (42).

6. A steel ball processing and tempering device according to claim 1, characterized in that: The heating component (2) comprises a control panel (21), the control panel (21) is fixedly mounted on the top of the shell (1), a fin heater (22) is mounted below the control panel (21) via a control line (201), the fin heater (22) is embedded in the mounting groove (44), and the bottom height of the fin heater (2) is higher than the top height of the inner side of the inner insulation frame (4).

7. A steel ball processing and tempering device according to claim 6, characterized in that: The control line (201) installed on the fin heater (22) passes through the holes on the sealing block (23) and the reserved hole (11) from bottom to top, and the protective layer on the outside of the control line (201) is designed with stainless steel material.

8. The steel ball processing and tempering device according to claim 1, characterized in that: The first check valve (32) and the second check valve (33) are connected and installed via a gas transmission pipe and a helium gas tank and a nitrogen gas tank, respectively. The first check valve (32) and the second check valve (33) are both designed with pure copper material.

9. The steel ball processing and tempering device according to claim 1, characterized in that: The observation window (102) and the sealing door (17) have matching sizes, the installation heights of the observation window (102) and the sealing door (17) are both higher than the installation height of the grid frame (43), and high-temperature resistant transparent glass is embedded in the observation window (102).

10. The steel ball processing and tempering device according to claim 1, characterized in that: The positioning assembly (19) comprises a connecting plate (103), the connecting plate (103) being fixedly mounted on the front face of the second sealing cover (18), a positioning frame (105) being fixedly mounted on the front face of the connecting plate (103), a limiting frame (104) being slidably mounted on the positioning frame (105), and the sealing door (17) being limitedly mounted on the inner side of the second sealing cover (18) by the limiting frame (104).

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