What is the effect of the separation bearing seat after heat treatment by high-frequency quenching machine?

(1) Temperature change High-frequency rapid heating will change the critical point temperature of the steel, making the Ac3 line rise. Under normal circumstances, the high-frequency quenching temperature of No. 45 steel is 890-930°C, water quenching and oil cooling, but adopt When circulating water is used as the cooling medium, in order to prevent cracks, the quenching heating temperature must be reduced. The recommended value is 820-860°C.

(2) Changes in heating time When using a high-frequency quenching machine for heat treatment, increase the output power, reduce the heating time and the size of the sensor gap, and the depth of the hardened layer that meets the technical requirements can also be obtained.

(3) Requirements for the original structure High-frequency rapid heating makes the austenite composition uneven, and the original structure has a great influence on the homogenization of the austenite. Therefore, the separation bearing seat must be normalized before high-frequency quenching, so that The uniform and fine distribution of carbides will facilitate the homogenization of austenite during rapid heating, thereby also avoiding cracks.

(4) Multi-turn inductor Using multi-turn inductor can improve the heating efficiency.

Numerous tests have proved that the hardness and depth of the hardened layer meet the requirements after the separation bearing seat is heat-treated by a high-frequency quenching machine, and its service life and production efficiency have been greatly improved, making it suitable for mass production. If you are still using traditional equipment for heat treatment, it seems that it is necessary to change to a new equipment.