A sintering atmosphere control device for a hot pressing sintering machine

Abstract

This application provides a sintering atmosphere control device for a hot-press sintering machine, relating to the field of hot-press sintering machine technology. It includes a main body of the hot-press sintering machine, with a support frame fixedly installed on the top. Multiple gas storage tanks, through an inert gas supply component, store inert gases such as argon, nitrogen, reducing gases such as hydrogen and carbon monoxide, and protective gases such as an argon-hydrogen mixture. Gases from the storage tanks are transferred to a mixing tank via a delivery pipeline. A shut-off valve and a first check valve are installed above the delivery pipeline to control gas flow and prevent backflow. An operation panel controls the flow rate of each gas and allows an electric telescopic rod to move a downward-pressing piston, pushing the gas. Graduation marks are provided above the gas storage tanks, allowing the downward-pressing piston to move a certain distance for precise feeding, ensuring the gas enters the mixing tank.

Description

Technical Field

[0001] This utility model relates to the field of hot pressing sintering machine technology, and in particular to a sintering atmosphere control device for a hot pressing sintering machine. Background Technology

[0002] Hot pressing sintering is a process that involves heating and sintering under pressure simultaneously. It is widely used in the preparation of materials such as ceramics and powder metallurgy, effectively reducing sintering temperature and shortening sintering time to obtain products with high density and excellent performance. During hot pressing sintering, the sintering atmosphere has a crucial impact on the microstructure and properties of the material. For example, in the sintering of metallic materials, a reducing atmosphere (such as hydrogen or carbon monoxide) can prevent metal oxidation; in the sintering of ceramic materials, an inert atmosphere (such as argon or nitrogen) can prevent the material from chemically reacting with components in the air.

[0003] Traditional atmosphere control methods often use simple gas flow valves to control the gas flow rate, which cannot precisely control the mixing ratio of multiple gases. When multiple gases need to be mixed in a specific ratio to form a complex atmosphere, it is difficult to achieve precise proportions, resulting in an unstable sintering atmosphere and affecting the consistency of product quality. Therefore, we propose a sintering atmosphere control device for hot pressing sintering machines. Utility Model Content

[0004] In view of this, this application provides a sintering atmosphere control device for a hot pressing sintering machine, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sintering atmosphere control device for a hot pressing sintering machine includes a hot pressing sintering machine body, a support frame fixedly installed on the top of the hot pressing sintering machine body, a gas storage tank fixedly installed on the top of the support frame, and an inert gas supply component provided on the gas storage tank.

[0007] The inert gas supply assembly includes a delivery pipe, a shut-off valve, a first check valve, and a viewing window. One end of the delivery pipe is fixedly installed at the bottom of the gas storage tank. The shut-off valve and the first check valve are both fixedly installed on the outside of the delivery pipe, and the viewing window is fixedly installed on the front side of the gas storage tank.

[0008] Preferably, a proportioning box is fixedly installed on the top of the hot pressing sintering machine body, and the other end of the conveying pipe is fixedly installed on the top of the proportioning box. Gas mixing and proportioning components are provided on the hot pressing sintering machine body, support frame and proportioning box.

[0009] Preferably, the inert gas supply assembly further includes a scale mark, an electric telescopic rod, and a downward push piston. The scale mark is located on the front side of the viewing window, the electric telescopic rod is fixedly installed on the top of the gas storage tank, the downward push piston is fixedly installed on the output end of the electric telescopic rod, and the downward push piston is slidably located on the inner side of the gas storage tank.

[0010] Preferably, the gas mixing and proportioning assembly includes a motor, a drive shaft, a spoiler, an exhaust pipe, a pressure reducing valve, and a pressure sensor. The motor is fixedly installed on the left side of the proportioning box, the drive shaft is fixedly installed at the output end of the motor, multiple spoilers are fixedly installed around the outside of the drive shaft, the exhaust pipe is fixedly installed at the top of the proportioning box, the pressure reducing valve is fixedly installed on the outside of the exhaust pipe, and the pressure sensor is fixedly installed at the top of the proportioning box.

[0011] Preferably, the gas mixing and proportioning component further includes a gas composition analyzer, a temperature sensor, and a humidity sensor, all of which are fixedly installed on the top of the hot pressing sintering machine body.

[0012] Preferably, the gas mixing and proportioning assembly further includes a mounting plate, an operation panel, and an atmosphere control pipe. The mounting plate is fixedly mounted on the top of the support frame, the operation panel is fixedly mounted on one side of the mounting plate, one end of the atmosphere control pipe is fixedly mounted on the top of the proportioning box, and the other end of the atmosphere control pipe is fixedly mounted on the top of the hot pressing sintering machine body.

[0013] Preferably, the gas mixing and proportioning assembly further includes a second one-way valve, a mounting bracket, and a fan. The second one-way valve is fixedly installed on the outside of the atmosphere control pipe, the mounting bracket is fixedly installed on the inside of the atmosphere control pipe, and the fan is fixedly installed on one side of the mounting bracket.

[0014] Preferably, a gas supply pipe is provided on the front side of the gas storage tank, and a solenoid valve is provided on the outside of the gas supply pipe.

[0015] Preferably, the material of the downward pushing piston is rubber, the window is glass, and a sealing ring is provided on the outside of the window.

[0016] Preferably, the pressure sensor is electrically connected to the pressure reducing valve, and the operation panel is electrically connected to the gas composition analyzer, the temperature sensor, and the humidity sensor.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] (1) A sintering atmosphere control device for a hot pressing sintering machine of the present invention, through an inert gas supply component, multiple gas storage tanks store inert gases such as argon, nitrogen, reducing gases such as hydrogen, carbon monoxide and protective gases such as argon-hydrogen mixture. The gas inside the gas storage tank can be transmitted to the mixing box through the conveying pipeline. A shut-off valve and a first check valve are set above the conveying pipeline to facilitate the control of gas flow and prevent gas backflow. The operation panel can control the flow rate of each gas and allow the electric telescopic rod to drive the downward push piston to move and push the gas. A scale mark is set above the gas storage tank to allow the downward push piston to move a certain distance to achieve accurate feeding and allow the gas to enter the interior of the mixing box.

[0019] (2) The sintering atmosphere control device of the hot pressing sintering machine of this utility model controls the rotation of the drive shaft and the baffle plate by the setting of the gas mixing and proportioning component. After the baffle plate rotates, it can make various gases fully mixed inside the proportioning box to ensure the stability of the atmosphere composition entering the sintering chamber. A pressure sensor and an exhaust pipe are set above the main body of the hot pressing sintering machine to monitor the pressure inside the chamber in real time. When the pressure exceeds the set value, the pressure reducing valve automatically opens to release the pressure and ensure that the pressure inside the chamber is stable within the set range. A gas composition analyzer is set inside the main body of the hot pressing sintering machine. Using spectral analysis or chromatographic analysis technology, the concentration of gases such as oxygen, hydrogen, and carbon monoxide in the atmosphere can be detected in real time.

[0020] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a sintering atmosphere control device for a hot pressing sintering machine proposed in this utility model;

[0022] Figure 2 This is a schematic diagram showing a three-dimensional view of a partial structure of a sintering atmosphere control device for a hot pressing sintering machine according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram showing a three-dimensional view of a partial structure of a sintering atmosphere control device for a hot pressing sintering machine according to an embodiment of this application;

[0024] Figure 4 This is a schematic diagram showing a three-dimensional view of a partial structure of a sintering atmosphere control device for a hot pressing sintering machine according to an embodiment of this application.

[0025] Figure label:

[0026] 1. Inert gas supply assembly; 2. Gas mixing and proportioning assembly; 3. Main body of hot pressing sintering machine; 4. Support frame; 5. Gas storage tank; 6. Proportioning box;

[0027] 11. Delivery pipeline; 12. Shut-off valve; 13. First check valve; 14. Viewing window; 15. Scale markings; 16. Electric telescopic rod; 17. Downward pushing piston;

[0028] 21. Motor; 22. Drive shaft; 23. Spoiler; 24. Exhaust pipe; 25. Pressure reducing valve; 26. Pressure sensor; 27. Gas composition analyzer; 28. Temperature sensor; 29. ​​Humidity sensor; 30. Mounting plate; 31. Control panel; 32. Atmosphere control pipe; 33. Second check valve; 34. Mounting bracket; 35. Fan. Detailed Implementation

[0029] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0030] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] refer to Figure 1-4 A sintering atmosphere control device for a hot pressing sintering machine includes a hot pressing sintering machine body 3, a support frame 4 fixedly installed on the top of the hot pressing sintering machine body 3, a gas storage tank 5 fixedly installed on the top of the support frame 4, and an inert gas supply component 1 provided on the gas storage tank 5.

[0032] The inert gas supply assembly 1 includes a delivery pipe 11, a shut-off valve 12, a first check valve 13, and a viewing window 14. One end of the delivery pipe 11 is fixedly installed at the bottom of the gas storage tank 5. The shut-off valve 12 and the first check valve 13 are both fixedly installed on the outside of the delivery pipe 11. The viewing window 14 is fixedly installed on the front side of the gas storage tank 5.

[0033] In this embodiment, a proportioning box 6 is fixedly installed on the top of the hot pressing sintering machine body 3, and the other end of the conveying pipe 11 is fixedly installed on the top of the proportioning box 6. A gas mixing and proportioning component 2 is provided on the hot pressing sintering machine body 3, the support frame 4 and the proportioning box 6.

[0034] In this embodiment, the inert gas supply assembly 1 also includes a scale mark 15, an electric telescopic rod 16, and a downward push piston 17. The scale mark 15 is located on the front side of the viewing window 14. The electric telescopic rod 16 is fixedly installed on the top of the gas storage tank 5. The downward push piston 17 is fixedly installed on the output end of the electric telescopic rod 16 and is slidably located inside the gas storage tank 5. The gas inside the gas storage tank 5 can be transferred to the mixing box 6 through the conveying pipe 11. A shut-off valve 12 and a first one-way valve 13 are provided above the conveying pipe 11 to facilitate the control of gas flow and prevent gas backflow.

[0035] In this embodiment, the gas mixing and proportioning component 2 includes a motor 21, a drive shaft 22, a baffle 23, an exhaust pipe 24, a pressure reducing valve 25, and a pressure sensor 26. The motor 21 is fixedly installed on the left side of the proportioning box 6, the drive shaft 22 is fixedly installed on the output end of the motor 21, multiple baffles 23 are fixedly installed around the outside of the drive shaft 22, the exhaust pipe 24 is fixedly installed on the top of the proportioning box 6, the pressure reducing valve 25 is fixedly installed on the outside of the exhaust pipe 24, and the pressure sensor 26 is fixedly installed on the top of the proportioning box 6.

[0036] In this embodiment, the gas mixing and proportioning component 2 also includes a gas composition analyzer 27, a temperature sensor 28, and a humidity sensor 29. The gas composition analyzer 27, the temperature sensor 28, and the humidity sensor 29 are all fixedly installed on the top of the hot pressing sintering machine body 3.

[0037] In this embodiment, the gas mixing and proportioning component 2 also includes a mounting plate 30, an operation panel 31, and an atmosphere control pipe 32. The mounting plate 30 is fixedly installed on the top of the support frame 4, the operation panel 31 is fixedly installed on one side of the mounting plate 30, one end of the atmosphere control pipe 32 is fixedly installed on the top of the proportioning box 6, and the other end of the atmosphere control pipe 32 is fixedly installed on the top of the hot pressing sintering machine body 3.

[0038] In this embodiment, the gas mixing and proportioning component 2 also includes a second one-way valve 33, a mounting bracket 34, and a blower 35. The second one-way valve 33 is fixedly installed on the outside of the atmosphere control pipe 32, the mounting bracket 34 is fixedly installed on the inside of the atmosphere control pipe 32, and the blower 35 is fixedly installed on one side of the mounting bracket 34. After the blower 35 is started, it can accelerate the gas flow rate, so that the gas can enter the interior of the hot pressing sintering machine body 3 through the atmosphere control pipe 32 to regulate the atmosphere.

[0039] In this embodiment, a gas supply pipe is provided on the front side of the gas storage tank 5, and a solenoid valve is provided on the outside of the gas supply pipe.

[0040] In this embodiment, the material of the downward pushing piston 17 is rubber, and the viewing window 14 is glass. A sealing ring is provided on the outside of the viewing window 14. The operation panel 31 can control the flow rate of each gas, and can allow the electric telescopic rod 16 to drive the downward pushing piston 17 to move, so as to push the gas. The gas storage tank 5 is provided with scale marks 15, which can allow the downward pushing piston 17 to move a certain distance to achieve accurate feeding. The sealing ring can prevent gas leakage during the installation of the viewing window 14.

[0041] In this embodiment, pressure sensor 26 is electrically connected to pressure reducing valve 25, and operation panel 31 is electrically connected to gas composition analyzer 27, temperature sensor 28, and humidity sensor 29. A gas composition analyzer 27 is installed inside the hot-pressing sintering machine body 3. Using spectral or chromatographic analysis techniques, it can detect the concentrations of gases such as oxygen, hydrogen, and carbon monoxide in the atmosphere in real time. Since gas composition analyzer 27 is existing technology, it is not described in detail here. Temperature sensor 28 and humidity sensor 29 can monitor the internal environmental parameters in real time, providing comprehensive data support for atmosphere control. Operation panel 31 allows personnel to set parameters such as the composition ratio, pressure, and flow rate of the sintering atmosphere on the interface, and to view the atmosphere monitoring data and equipment operating status in real time, making the device convenient and quick for controlling the sintering atmosphere.

[0042] Specifically, multiple gas storage tanks 5 store inert gases (such as argon and nitrogen), reducing gases (such as hydrogen and carbon monoxide), and protective gases (such as an argon-hydrogen mixture), respectively. Gases from the storage tanks 5 are transferred to a mixing tank 6 via a delivery pipe 11. A shut-off valve 12 and a first check valve 13 are installed above the delivery pipe 11 to control gas flow and prevent backflow. An operation panel 31 controls the flow rate of each gas and allows the electric telescopic rod 16 to move the downward-pressing piston 17. The gas can be pushed. The gas storage tank 5 is equipped with a scale mark 15, which allows the downward pushing piston 17 to move a certain distance to achieve precise feeding. After the gas enters the mixing box 6, the motor 21 can be controlled to drive the drive shaft 22 and the baffle 23 to rotate. After the baffle 23 rotates, it can make the various gases fully mixed inside the mixing box 6 to ensure that the atmosphere composition entering the sintering chamber is stable. A pressure sensor 26 and an exhaust pipe 24 are set on the top of the hot pressing sintering machine body 3 to monitor the pressure inside the chamber in real time. When the pressure exceeds the set value, the pressure reducing valve 25 automatically opens to release pressure, ensuring that the pressure inside the cavity remains stable within the set range. A gas composition analyzer 27 is installed inside the main body 3 of the hot pressing sintering machine. Using spectral analysis or chromatographic analysis technology, it can detect the concentration of gases such as oxygen, hydrogen, and carbon monoxide in the atmosphere in real time. The gas composition analyzer 27 is existing technology, so it is not described in detail in this article. The temperature sensor 28 and humidity sensor 29 can monitor the environmental parameters inside the cavity in real time, providing comprehensive data support for atmosphere control. The operation panel 31 allows personnel to set parameters such as the composition ratio, pressure, and flow rate of the sintering atmosphere on the interface, and view the atmosphere monitoring data and equipment operating status in real time, making the device convenient and quick to control the sintering atmosphere.

[0043] It should be noted that although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot press sintering atmosphere control device for a hot press sintering machine, characterized by, include: The hot pressing sintering machine body (3) has a support frame (4) fixedly installed on the top of the hot pressing sintering machine body (3), and a gas storage tank (5) fixedly installed on the top of the support frame (4). An inert gas supply component (1) is provided on the gas storage tank (5). The inert gas supply assembly (1) includes a delivery pipe (11), a shut-off valve (12), a first check valve (13), and a viewing window (14). One end of the delivery pipe (11) is fixedly installed at the bottom of the gas storage tank (5). The shut-off valve (12) and the first check valve (13) are both fixedly installed on the outside of the delivery pipe (11). The viewing window (14) is fixedly installed on the front side of the gas storage tank (5).

2. The sintering atmosphere control device of a hot press sintering machine according to claim 1, wherein The top of the hot pressing sintering machine body (3) is fixedly installed with a proportioning box (6), and the other end of the conveying pipe (11) is fixedly installed on the top of the proportioning box (6). Gas mixing and proportioning components (2) are provided on the hot pressing sintering machine body (3), support frame (4) and proportioning box (6).

3. The sintering atmosphere control device of a hot press sintering machine according to claim 1, wherein The inert gas supply assembly (1) also includes a scale mark (15), an electric telescopic rod (16), and a downward push piston (17). The scale mark (15) is located on the front side of the viewing window (14). The electric telescopic rod (16) is fixedly installed on the top of the gas storage tank (5). The downward push piston (17) is fixedly installed on the output end of the electric telescopic rod (16). The downward push piston (17) is slidably located on the inside of the gas storage tank (5).

4. The sintering atmosphere control device of the hot press sintering machine according to claim 2, wherein The gas mixing and proportioning assembly (2) includes a motor (21), a drive shaft (22), a baffle (23), an exhaust pipe (24), a pressure reducing valve (25), and a pressure sensor (26). The motor (21) is fixedly installed on the left side of the proportioning box (6). The drive shaft (22) is fixedly installed at the output end of the motor (21). Multiple baffles (23) are fixedly installed around the outside of the drive shaft (22). The exhaust pipe (24) is fixedly installed at the top of the proportioning box (6). The pressure reducing valve (25) is fixedly installed on the outside of the exhaust pipe (24). The pressure sensor (26) is fixedly installed at the top of the proportioning box (6).

5. The sintering atmosphere control device of a hot press sintering machine according to claim 4, wherein The gas mixing and proportioning component (2) also includes a gas composition analyzer (27), a temperature sensor (28), and a humidity sensor (29), all of which are fixedly installed on the top of the hot pressing sintering machine body (3).

6. The sintering atmosphere control device of a hot press sintering machine according to claim 5, wherein The gas mixing and proportioning component (2) also includes a mounting plate (30), an operation panel (31), and an atmosphere control pipe (32). The mounting plate (30) is fixedly mounted on the top of the support frame (4), the operation panel (31) is fixedly mounted on one side of the mounting plate (30), one end of the atmosphere control pipe (32) is fixedly mounted on the top of the proportioning box (6), and the other end of the atmosphere control pipe (32) is fixedly mounted on the top of the hot pressing sintering machine body (3).

7. The sintering atmosphere control device of a hot press sintering machine according to claim 6, wherein The gas mixing and proportioning assembly (2) also includes a second one-way valve (33), a mounting bracket (34) and a fan (35). The second one-way valve (33) is fixedly installed on the outside of the atmosphere control pipe (32), the mounting bracket (34) is fixedly installed on the inside of the atmosphere control pipe (32), and the fan (35) is fixedly installed on one side of the mounting bracket (34).

8. The sintering atmosphere control device of a hot press sintering machine according to claim 1, wherein A gas supply pipe is provided on the front side of the gas storage tank (5), and a solenoid valve is provided on the outside of the gas supply pipe.

9. The sintering atmosphere control device of a hot press sintering machine according to claim 3, wherein The material of the downward push piston (17) is rubber, the material of the window (14) is glass, and a sealing ring is provided on the outside of the window (14).

10. The sintering atmosphere control device of a hot press sintering machine according to claim 6, wherein The pressure sensor (26) is electrically connected to the pressure reducing valve (25), and the operation panel (31) is electrically connected to the gas composition analyzer (27), the temperature sensor (28), and the humidity sensor (29).

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