发明公开
EP2229460A4 STEEL WIRE ROD FOR BEARING STEEL, MANUFACTURING METHOD OF STEEL WIRE ROD FOR BEARING STEEL, HEAT TREATMENT METHOD OF STEEL BEARING, STEEL BEARING AND SOAKING METHOD OF BEARING STEEL 审中-公开
钢线材,轴承钢,METHOD FOR钢线材为轴承钢轴承钢,热处理工艺钢铁股,股票和钢DURCHWÄRMVERFAHREN

  • 专利标题: STEEL WIRE ROD FOR BEARING STEEL, MANUFACTURING METHOD OF STEEL WIRE ROD FOR BEARING STEEL, HEAT TREATMENT METHOD OF STEEL BEARING, STEEL BEARING AND SOAKING METHOD OF BEARING STEEL
  • 专利标题(中): 钢线材,轴承钢,METHOD FOR钢线材为轴承钢轴承钢,热处理工艺钢铁股,股票和钢DURCHWÄRMVERFAHREN
  • 申请号: EP08864499
    申请日: 2008-12-12
  • 公开(公告)号: EP2229460A4
    公开(公告)日: 2014-07-02
  • 发明人: KIM KWAN-HO
  • 申请人: POSCO
  • 专利权人: POSCO
  • 当前专利权人: POSCO
  • 优先权: KR20070134271 2007-12-20; KR20070134273 2007-12-20; KR20080087772 2008-09-05
  • 主分类号: C21D1/00
  • IPC分类号: C21D1/00 C21D1/18 C21D1/19 C21D1/32 C21D9/38 C21D9/40 C22C38/34
STEEL WIRE ROD FOR BEARING STEEL, MANUFACTURING METHOD OF STEEL WIRE ROD FOR BEARING STEEL, HEAT TREATMENT METHOD OF STEEL BEARING, STEEL BEARING AND SOAKING METHOD OF BEARING STEEL
摘要:
A heat treatment method of manufacturing high carbon bearing steel having excellent abrasion resistance and fatigue resistance, a steel wire rod for high carbon bearing steel subjected to the heat treatment, a manufacturing method of the steel wire rod, high carbon bearing steel manufactured by the heat treatment and a soaking method of a steel bloom used for manufacturing the steel wire rod. The heat treatment method of bearings includes the steps of: quenching a bearing-shaped steel part containing, by weight, 0.5% to 1.20% carbon and 1.0% to 2.0% silicon; and partitioning the quenched steel part at a temperature ranging from Ms−100° C. to Ms for at least 10 minutes, where Ms represents a temperature at which formation of martensite will start.
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