BACKPrecision seamless steel pipe
Bearing steel pipe
Description:Bearing steel for the production of bearing steel pipe has the following types of bearing special steel (marked with G for "roll") : chromium bearing steel such as GCr6, GCr9 (SiMn), GCrl5 (SiMn); No chromium bearing steel such as GSiMnV (Re), GSiMnMoV (Re), GMnMoV (Re); Carburized bearing steel such as G20CrMo, G20Cr2Mn2Mo; High carbon chromium stainless bearing steel such as 9Cr18 (Mo).
parameters
Bearing steel pipe is mainly used to manufacture rolling bearings and rings.
Because bearings should have long life, high precision, low caloric value, high speed, high rigidity, low noise, high wear resistance and other characteristics, it is required that bearing steel pipes should have: high hardness, uniform hardness, high elastic limit, high contact fatigue strength, necessary toughness, certain hardenability, corrosion resistance in atmospheric lubricants. In order to achieve the above performance requirements, the chemical composition uniformity, non-metallic inclusion content and type, carbide size and distribution, decarbonization and other requirements are strict.
Bearing steel pipe generally to high quality, high performance and a variety of direction. Bearing steel is divided into high carbon chromium bearing steel pipe, carburized bearing steel pipe, high temperature bearing steel pipe, stainless bearing steel pipe and special bearing materials according to its characteristics and application environment.
introduction
Bearing steel pipe refers to hot rolled or cold rolled (cold drawn) seamless steel pipe for the manufacture of ordinary rolling bearing rings. The outer diameter of the steel pipe is 25-180 mm, and the wall thickness is 3.5-20 mm. There are two kinds of ordinary precision and higher precision. Bearing steel is used to make balls, rollers and bearing rings. Bearing is under great pressure and friction at work, so bearing steel is required to have high and uniform hardness and wear resistance, as well as high elastic limit. The requirements on the uniformity of the chemical composition of bearing steel, the content and distribution of non-metallic inclusions, the distribution of carbide and other requirements are very strict, is one of the most stringent in all steel production.
