GCr15 bearing steel ball is a high carbon chromium bearing steel with less alloy content, good performance and wide application. After quenching and tempering, it has high and uniform hardness, good wear resistance and high contact fatigue performance. The cold working of the steel is medium in plasticity, the cutting performance is general, the welding performance is poor, the sensitivity to white spots is large, and the temper brittleness is obtained. GCr15 bearing steel, containing c0.95-1.05, Mn0.25-0.45, Si0.15-0.35.
GCr15 bearing steel ball has good comprehensive performance, good cutting performance after spheroidizing annealing, high hardness and uniformity after quenching and tempering, high wear resistance and contact fatigue strength, good hot workability and less alloying elements. The price is relatively cheap.
The quality of GCr15 bearing steel balls is very high, and the content and distribution of sulfur, phosphorus and non-metallic inclusions need to be strictly controlled, because the content and distribution of non-metallic inclusions have a great influence on the life of bearing steel. The basic quality requirements for bearing steel are pure and uniform. Purity is less impurity elements and non-metallic impurities. The uniformity of the structure is that the carbides in the steel should be fine and the distribution should be uniform. The higher the amount of inclusions, the shorter the life. In order to improve the quality of smelting, electric furnace smelting and electroslag remelting have recently been adopted, and new processes such as vacuum smelting and vacuum consumable refining can be used to improve the quality of bearing steel.www.wxjnsteelball.com