Surface heat treatment is a heat treatment method that changes the surface properties by changing the structure of the surface layer of the 15CrMo steel sheet. The surface quenching of the 15CrMo steel plate changes the surface structure of the 15CrMo alloy steel plate without changing the heat treatment of the surface chemical composition. It can be realized by high frequency, intermediate frequency or power frequency current induction heating or by flame heating. The common feature is to try to quickly heat the surface of the 15CrMo alloy steel plate to the quenching temperature, and then quickly cool the heat when it has not been transmitted to the core of the part, so that the surface hardness of the 15CrMo steel plate is high, and the core still has high toughness.
The 15CrMo steel plate is chemically treated. The purpose of this process is to heat-treat the surface chemical composition and structure of the 15CrMo alloy steel plate. The chemical heat treatment can be divided into carburizing, nitriding, carbonitriding, and metal infiltration according to the different infiltration elements on the surface of the 15CrMo steel plate. It is very effective for improving and improving the wear resistance, corrosion resistance and fatigue resistance of 15CrMo alloy steel. As far as the current international situation is concerned, chemical heat treatment has developed rapidly and many new technologies have been used.
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