anti-foreign bearing steel DCJ2

How to use the special circumstances bearing steel
To meet this demand, we must make the material, heat treatment process, shape and size optimization, and user needs and the use of the material together to seek the integration of the surrounding parts. Loaded cars, industrial machinery, household appliances, machinery and other mechanical devices intelligence bearing not only requires a lightweight, compact, and improve bearing performance to meet the requirements too harsh environments use:
For automotive transmissions and differential bearing device, due to the oil mixed with foreign matter (silt, cutting powder), once this foreign objects into the angular contact ball bearing rolling surfaces will produce rolling surface indentation caused by the early spalling resistance to foreign developed for this purpose bearing manufacturer steel.
By inclusion of foreign environment reproducing rolling fatigue test, research to improve the result of the inclusion of foreign environment bearing life, by improving the amount of retained austenite of the surface, to improve the surface hardness and toughness of the matrix have effect.

2, high temperature bearing steel STJ2
With the car engine output power and continuous improvement in industrial machinery and closure of high-speed, bearing using the ambient temperature rises. Desired to develop a temperature at 473 ~ 523K maintain performance of the bearing. In this temperature range, if the implementation of the quenched SUJ2, the hardness is reduced, rolling fatigue life characteristics deteriorate holes.