Rolling bearing steel

Rolling bearing steel is used in the manufacture of rolling bearings of rolling body and inner and outer ring of steel, usually used in the condition of quenching. Rolling bearing in the work to carry high alternating load, the contact stress between roller and inner and outer ring, and also work in lubricant medium. Therefore, rolling bearing steel with high compressive strength and the fatigue strength, has a certain toughness, plastic, wear resistance and corrosion resistance, steel internal organization, uniform composition, heat treatment has good dimensional stability. The commonly used rolling bearing steel is carbon 0. 95% ~ 1. 10%, chromium 0. 40% ~ 1. Low 60% of high carbon chromium bearing steel, such as GCr6, GCr9, GCr15, etc. In order to meet the demand of bearings under different working condition, also developed the special purpose of bearing steel, such as manufacturing rolling mill bearing made of impact resistant carburizing bearing steel, aircraft engine bearing with the high temperature of bearing steel and stainless bearing steel in corrosion medium, etc. GCr15 bearing steel heat treatment process and spheroidizing or softening annealing heat treatment. The purpose is to reduce the hardness, smooth texture, improve machinability, in preparation for quenching. Is mainly suitable for carbon tool steel, alloy spring steel, bearing steel and alloy tool steel eutectoid steel and hypereutectoid steel ( Carbon content is greater than zero. 77%) 。 Under the bearing steel bearing 1 how to make it, the embryo, 2, forging, stamping, Outer ring, inner ring) Machined (3, Outer ring, inner ring) 4, 5 heat treatment, fine grinding, Outer ring, inner ring forming)