Bearing steel is used to make rollers, rollers, and bearing circles. Bearing steel has high and uniform hardness and abrasion resistance, as well as a high elastic limit. The uniformity of the chemical composition of the bearing steel, the content of non-metallic mixed objects and distribution, and the distribution of carbides are very strict. It is one of the strictest steel in all steel production. Bearing steel is divided into six categories: high-carbon chromium bearing steel, chromium-free bearing steel, carburizing bearing steel, stainless bearing steel, mid-high temperature bearing steel, and anti-magnetic bearing steel.

Physical Performance of Bearing Steel

The physical properties of bearing steel are mainly based on micro-tissue, non-metallic mixed objects, and low-power tissues. The low-power tissue of steel must have no shrinkage, subcutaneous bubbles, white spots, and micro res. The annealing tissue of steel should be a delicate granular pearl light that is evenly distributed.

The quality requirements of bearing steel are very high. The content of sulfur, phosphorus, hydrogen, and the number, size, and distribution status of non-metallic mixed materials and carbides are needed because the number, size, and distribution of non-metallic mixed objects and carbides The situation has a great impact on the life of bearing steel. Often, the failure of the bearing is the expansion of the micro-cracks produced by the large mixed or carbide.

Application of Bearing Steel

Bearing steel is a steel species used to make a rolling bearing, rolling and sleeve, etc., and can also be used to make precision puppets for precision quantity, cold punching, machine tool screws, such as punching, quantity, tap, and diesel oil pump. Bearing steel is used to make rollers, rollers, and bearing circles.

Performance Requirements of Bearing Steel

To meet the above requirements of the bearing, the following basic performance requirements are proposed for the bearing steel materials:

1) High contact fatigue intensity.

2) After thermal treatment, it should have high hardness or hardness requirements that can meet the performance requirements of the bearing.

3) High wear resistance, and low friction coefficient.

4) High elastic limit.

5) Good impact toughness and broken toughness.

6) Good size stability.

7) Good anti-rust resistance.

8) Good cold and thermal processing performance.