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Question
Vacuum heat treatment of the problem

Editor:    Date:2014-05-06 18:27:58    Views:5732

The method for vacuum heat treatment processing

In the production of vacuum heat treatment processing, processing product surface often appear "the color" problems. Get bright appearance and not the color of product processing effect is a research and development of vacuum furnace makers and users to the pursuit of common goals. So what is the reason to affect the light sex? And what factors? How to make the product light? This is another production line technical personnel and workers are concerned about.

The color is caused by oxidation, different colors and generated by the temperature and the thickness of the oxide film. Oil quenching can also cause surface carburizing, vacuum degree too high will cause elements volatilize, bond; These will damage the surface of the light.

In order to obtain good surface brightness, must pay attention to the production practice and consider the measures are as follows:

1, first of all, the technical index of the vacuum furnace to meet the national standards.

2, reasonable process to correct.

3 vacuum furnace can not be polluted.

4 when necessary in charging, before washing furnace with high purity of inert gas.

5 through reasonable oven in advance.

6 reasonable choice on cooling inert gas (or with a certain proportion into the strong reducibility gas).

The surface of the vacuum furnace to obtain light is easier, because get the dew point to - 74 ℃ of protective atmosphere is not easy, and the cost is very high. Secure and - 74 ℃, dew point and impurity content of the same vacuum atmosphere is a piece of cake. Vacuum heat treatment processing in the production of stainless steel, titanium alloy, high temperature alloy and other relative difficulty bigger. Tool steel to prevent elements volatilize, pressure (vacuum) should be controlled in 70 ~ 130 pa. Carbon steel, alloy structural steel for polished surface is relatively easier.

See whether you to the vacuum heat treatment has a new understanding? Welcome to continue to pay attention to the Soviet Union's heat treatment Co. Ltd. for more information you bring.

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