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A high-precision vacuum dynamic control system for vacuum nitriding

A dynamic control, high-precision technology, applied in solid-state diffusion coating, metal material coating process, coating, etc., can solve the problem of large fluctuation of atmospheric pressure, affecting the uniformity and stability of nitrogen potential atmosphere, and quality indicators of difficult-to-handle parts and other problems to achieve the effect of reducing pressure fluctuation and ensuring quality stability and reproducibility

Active Publication Date: 2018-02-27
JIANGSU FENGDONG THERMAL TECH CO LTD
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AI Technical Summary

Problems solved by technology

The effect of vacuum nitriding depends largely on the vacuum nitriding control system. With the existing vacuum nitriding control system, the atmosphere pressure in the vacuum furnace fluctuates greatly, especially when the atmosphere pressure in the vacuum furnace is low. Seriously, it affects the uniformity and stability of the nitrogen potential atmosphere in the vacuum furnace, thereby affecting the quality stability and reproducibility of the nitrided workpiece, and it is difficult to meet the quality indicators of high-demand processing parts such as aviation and aerospace.

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  • A high-precision vacuum dynamic control system for vacuum nitriding

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Embodiment Construction

[0016] Such as figure 1 As shown, the high-precision vacuum dynamic control system for vacuum nitriding in this embodiment includes a vacuum furnace tank 1, an air intake system and an exhaust system.

[0017] The intake system includes a first intake duct 2 and a second intake duct 3 . The first air intake pipe 2 is provided with a first air intake control device, which includes a first pressure relay 21, a first pressure reducing valve 22, a first main road vacuum angle valve 24 and a first bypass vacuum valve. Angle valve 26; the second air intake pipe 3 is provided with a second air intake control device, the second air intake control device includes a second pressure relay 31, a second pressure reducing valve 32, a second main road vacuum angle valve 34 and a second air intake control device. Two bypass vacuum angle valves 36.

[0018] As a preferred embodiment, in this embodiment, a check valve 37 is further provided on the second air intake pipe 3 to prevent the gas i...

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Abstract

The invention discloses a high-precision vacuum dynamic control system for vacuum nitriding, comprising a vacuum furnace retort, an air intake system and an exhaust system, wherein the air intake system and the exhaust system are connected through the vacuum furnace retort. connection, the air intake system includes a first intake pipe and a second intake pipe; the exhaust system includes an exhaust pipe, the exhaust pipe is provided with a vacuum system, and the first intake pipe is A first intake control device is provided, and the first intake control device is used to control the intake air volume of the first intake pipe; the second intake pipe is provided with a second intake control device, so The second intake control device is used to control the intake air volume of the second intake pipe; an exhaust control device is provided on the exhaust pipe, and the exhaust control device is used to control the flow rate of the exhaust pipe. exhaust volume. The invention significantly reduces the pressure fluctuation in the vacuum furnace by accurately and dynamically controlling the air intake and air output, and ensures the quality stability and reproducibility of the nitriding workpiece.

Description

technical field [0001] The invention relates to the field of heat treatment equipment manufacturing, in particular to a high-precision vacuum dynamic control system for vacuum nitriding. Background technique [0002] Vacuum nitriding has the characteristics of low energy consumption, fast penetration speed, no pollution, surface purification, etc. It is especially suitable for uniform nitriding of blind holes, slits, contact surfaces and other parts. In recent years, vacuum nitriding has been used more and more in aviation, aerospace, automobile, wind power, shipbuilding and other industries. The effect of vacuum nitriding depends largely on the vacuum nitriding control system. With the existing vacuum nitriding control system, the atmosphere pressure in the vacuum furnace fluctuates greatly, especially when the atmosphere pressure in the vacuum furnace is low. Seriously, it affects the uniformity and stability of the nitrogen potential atmosphere in the vacuum furnace, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/24
Inventor 黄跃学邓乔枫卞健林国强
Owner JIANGSU FENGDONG THERMAL TECH CO LTD
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