首页> 外国专利> BEARING STEEL EXHIBITING EXCELLENT MACHINABILITY AFTER SPHEROIDIZING ANNEALING AND EXCELLENT RESISTANCE TO HYDROGEN FATIGUE AFTER QUENCHING/TEMPERING

BEARING STEEL EXHIBITING EXCELLENT MACHINABILITY AFTER SPHEROIDIZING ANNEALING AND EXCELLENT RESISTANCE TO HYDROGEN FATIGUE AFTER QUENCHING/TEMPERING

机译:淬火/回火后进行渗碳退火后表现出出色的可加工性以及出色的抗氢疲劳性

摘要

Provided is bearing steel excellent in post spheroidizing-annealing workability and in post quenching-tempering hydrogen fatigue resistance property. The bearing steel has a chemical composition containing, by mass%: 0.85 % to 1.10 % C; 0.30 % to 0.80 % Si; 0.90 % to 2.00 % Mn; 0.025 % or less P; 0.02 % or less S; 0.05 % or less Al; 1.8 % to 2.5 % Cr; 0.15 % to 0.4 % Mo; 0.0080 % or less N; 0.0020 % or less O; and the balance being Fe and incidental impurities, to thereby effectively suppress the generation of WEA even in environment where hydrogen penetrates into the steel, so as to improve the rolling contact fatigue life and also the workability such as cuttability and forgeability of the material.
机译:本发明提供一种轴承钢,该轴承钢的后球化退火加工性和后淬火回火抗氢疲劳性优异。轴承钢的化学组成按质量百分比计为:0.85%至1.10%C; 0.30%至0.80%Si; Mn 0.90%至2.00%; P为0.025%以下。 0.02%以下Al:0.05%以下; 1.8%至2.5%Cr; 0.15%至0.4%Mo; N:0.0080%以下; O≤0.0020%并且,由于其余部分为Fe和附带杂质,因此即使在氢渗透到钢中的环境下也能够有效地抑制WEA的产生,从而提高滚动接触疲劳寿命以及材料的切削性和锻造性等加工性。

著录项

  • 公开/公告号EP2647734B1

    专利类型

  • 公开/公告日2015-05-27

    原文格式PDF

  • 申请/专利权人 JFE STEEL CORPORATION;

    申请/专利号EP20110845154

  • 发明设计人 HIRAI YASUMASA;UWAI KIYOSHI;

    申请日2011-11-24

  • 分类号C22C38;C22C38/02;C22C38/06;C22C38/04;C22C38/22;C21D1/32;C21D9/40;C21D8;C21D9/18;C21D1/18;F16C33/62;F16C33/30;

  • 国家 EP

  • 入库时间 2022-08-21 15:06:41

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