Process method for precisely controlling glow ion nitriding of small module gear

A technology of glow ion infiltration and small modulus gears, which is applied in the direction of manufacturing tools, metal material coating processes, furnace types, etc., can solve the problem of poor consistency in the control of the depth of the penetration layer and the thickness of the nitriding layer on the teeth of the small modulus gears. , affecting the service life of gears and other problems, to achieve the effect of solving the small modulus gear nitriding layer out of tolerance, the process method is stable, and the service life is guaranteed.

Pending Publication Date: 2021-12-10
GUIZHOU QUNJIAN PRECISION MACHINERY
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Problems solved by technology

[0003] The present invention aims at the deficiencies of the glow ion nitriding technology for small modulus m=0.5~1 gears, and provides a process method for precisely controlling the glow ion nitriding of small modulus gears to solve the problem of existing small modu

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  • Process method for precisely controlling glow ion nitriding of small module gear

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Example Embodiment

[0012] Example

[0013] Refer figure 1 This embodiment provides a process method for precision control of small modulus gear glow ion nitrogen nitrid, and the small mode gear in this example is made of 30 crmnsia, which is characterized by taking the gear material 30 crmnsia. Using glow sputtering and auxiliary heat sources to heat up to nitrogen nitrogen nitrogen nitrogen nitrogen nitrogen, the specific process is as follows:

[0014] After cleaning the workpiece surface, placed on the apparatus cathode plate, the workpiece is 30 to 40 mm distance, and then the vacuum pumping furnace has a vacuum to 60 to 80Pa, and an auxiliary heat source (second heat source) is heated to 170. ~ 190 ° C, at this temperature, the thin oxygen is pre-oxidized to the surface of the workpiece, providing a good surface state for the uniformity of glow ion nitriding tissue. Subsequently, the auxiliary heat source (second heat source) is turned off, and the cathode voltage is activated, and the surface ...

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Abstract

The invention provides a process method for precisely controlling glow ion nitriding of a small module gear. The method comprises the following steps of manufacturing the small module gear by using 30CrMnSiA, heating to a nitriding temperature by using glow sputtering and an auxiliary heat source after nitriding alloy structural steel 30CrMnSiA is subjected to pre-heat treatment and thermal refining, and then carrying out glow ion nitriding treatment. The problems that according to an existing small module gear nitriding layer structure, the nitriding layer thickness control consistency is poor, small module gear tooth permeation or insufficient nitriding layer depth is likely to be caused, and the service life of a gear is seriously affected are solved. The process method belongs to the technical field of metal material heat treatment.

Description

technical field [0001] The invention relates to a process method for accurately controlling the glow ion nitriding of small modulus gears, and belongs to the technical field of metal material heat treatment. Background technique [0002] Small modulus gears have the characteristics of high transmission precision and long service life. Usually, tooth surface nitriding is used to increase the hardness of the tooth surface and improve the service life of small modulus gears. The glow ion nitriding process has the characteristics of high efficiency, low consumption, and environmental protection. During the heating process of the existing glow ion nitriding technology, high-speed moving nitrogen ions hit the surface of the workpiece to generate internal energy, which increases the temperature of the workpiece. The temperature of the glow ion nitriding process can be nitriding at 420-540°C, so that nitrogen atoms infiltrate the workpiece during the heating process, and the infiltr...

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Application Information

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IPC IPC(8): C23C8/38C23C8/02C21D1/18C21D9/32C21D1/74
CPCC23C8/38C23C8/02C21D1/18C21D9/32C21D1/74
Inventor 陈汉兵周鹏亮杨华
Owner GUIZHOU QUNJIAN PRECISION MACHINERY
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