Bearing steel technical standards


  Bearing steel production mainly the implementation of GB / T18254-2002 standards and to adapt to the requirements of precision forging bearings Laiwu Steel GCr15JD quality agreement, which GCr15JD protocol quality requirements strict GB / T18254-2002 standards, GCr15JD requirements oxygen content ≤ 10ppm, the center of the segregation level ≤1.0 level, component control, length and size deviation are strict in GB / T18254-2002 standard.
  Bearings in the work to withstand the great pressure and friction, so the bearing steel has high and uniform hardness and wear resistance, and high flexibility limit. The uniformity of the chemical composition of the bearing steel, the content and distribution of non-metallic inclusions, the distribution of carbides and other requirements are very strict, is all steel production requirements of the most stringent one of the steel. 1976 International Organization for Standardization ISO will be a number of common bearing steel into international standards, the bearing steel is divided into: full hardened bearing steel, surface hardening bearing steel, stainless steel bearing, high temperature bearing steel and other four categories of 17 Steel.