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(1) of high carbon chromium bearing steel
The vast majority of bearing rings and rolling bodies are color made of special steel. High carbon chromium bearing steel (GCr15 and GCr15SiMn with ZGCr15 and ZGCr15SiMn) manufacturing rings and rolling elements, the hardness of parts as follows:
Made of GCr15 and ZGCr15 materials for bearing rings and roller for steel ball HRc61~65, HRc62~66;
Made of GCr15SiMn and ZGCr15SiMn materials for bearing rings and roller for steel ball HRc60~64, HRc60~66.
Bearing chromium bearing steel manufacturing high carbon steel is generally applicable to the working temperature is -40~130 degrees, normal oil and Zhi Runhua. Can meet the general requirements of mechanical.
High carbon chromium bearing steel bearing parts by high temperature after the back, adapt to the working temperature can be as high as 250 degrees.
With the progress of metallurgy technology, high carbon chromium bearing steel by smelting method can be different, such as vacuum smelting technology can make the intrinsic quality of steel greatly reform, especially the non metallic inclusions and the formation of the oxygen content in steel is decreased obviously. Bearing manufactured by the high carbon chromium bearing steel, the fatigue life can grow exponentially.
Based on a lot of experimental comparison data show different smelting method, GCr15, GCr15SiMn, ZGCr15, ZGCr15SiMn bearing steel bearing obtained.