公开(公告)号：EP2229460A4

公开(公告)日：2014-07-02

申请号：EP08864499

申请日：2008-12-12

申请人： POSCO

发明人： KIM KWAN-HO

IPC分类号： C21D1/00 ,  C21D1/18 ,  C21D1/19 ,  C21D1/32 ,  C21D9/38 ,  C21D9/40 ,  C22C38/34

CPC分类号： C21D1/19 ,  C21D1/32 ,  C21D9/0075 ,  C21D9/38 ,  C21D9/40 ,  C21D2211/001 ,  C21D2211/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/34 ,  F16C33/62 ,  F16C33/64

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.

摘要翻译： 制造具有优异的耐磨损性和耐疲劳性，钢线材高碳轴承钢进行热处理时，在钢线材的制造方法的高碳轴承钢的热处理方法中，高碳轴承钢通过热制 治疗和钢材的浸泡方法盛开用于制造的钢线材。 轴承的热处理方法包括以下步骤：淬火轴承型钢部分含有，按重量计，0.5％至1.20％的碳和1.0％至2.0％的硅; 和在范围从MS-100℃给Ms为至少10分钟，其中Ms darstellt在哪形成马氏体的温度将开始的温度下将所述淬火钢部件。

公开(公告)号：EP2602349A4

公开(公告)日：2017-06-21

申请号：EP11814839

申请日：2011-08-05

申请人： POSCO

发明人： KIM KWAN-HO

IPC分类号： C22C38/00 ,  B22D19/16 ,  B22D25/00 ,  C21C7/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

CPC分类号： C22C38/005 ,  B22D25/00 ,  C21C7/0006 ,  C21C7/06 ,  C22C38/00 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18

摘要： Provided is bearing steel having excellent fatigue life by minimizing segregation during casting of the bearing steel and reducing the generation of large carbides in a segregation band. According to the present invention, high-carbon chromium bearing steel including 0.5 wt% to 1.2 wt% of carbon (C), 0.15 wt% to 2.0 wt% of silicon (Si), 0.05 wt% to 0.45 wt% of manganese (Mn), 0.025 wt% or less (excluding 0 wt%) of phosphorus (P), 0.025 wt% or less (excluding 0 wt%) of sulfur (S), 0.1 wt% to 1.6 wt% of chromium (Cr), 0.01 wt% to 0.3 wt% of Ce, and iron (Fe) as well as other unavoidable impurities as a remainder and a method of manufacturing the same are provided.

摘要翻译： 本发明提供一种轴承钢，其通过使铸造轴承钢时的偏析最小化并减少偏析带中的大的碳化物的生成而具有优异的疲劳寿命。 根据本发明，含有碳（C）为0.5重量％〜1.2重量％，硅（Si）为0.15重量％〜2.0重量％，锰（Mn）为0.05重量％〜0.45重量％ ），0.025重量％以下（不含0重量％）磷（P），0.025重量％以下（不含0重量％）硫（S），0.1重量％〜1.6重量％铬（Cr），0.01重量％ （Ce）以及作为余量的铁（Fe）以及其他不可避免的杂质，以及其制造方法。