Bearing Steel Manufacturing Requirements

The content of inclusions is closely related to the oxygen content in steel, and the higher the oxygen content, the greater the number of inclusions, the shorter the life.

The larger the particle size of inclusions and carbide, the more uneven the distribution, the shorter the service life, and their size, distribution and the use of smelting process and smelting quality is closely related to the production of bearing steel is continuous casting and electric furnace smelting and remelting process, there are a small number of vacuum induction and vacuum self-consumption of the double vacuum or multiple vacuum self-consumption process to improve the quality of bearing steel.

The smelting quality of bearing steel is very high, the content of sulfur, phosphorus, hydrogen and non-metallic inclusions and carbide, the number, size and distribution of non-metallic inclusions and carbide, because the number, size and distribution of non-metallic inclusions and carbides have a great impact on the life of bearing steel, often bearing failure is the small cracks produced around the large inclusions or carbide.