基本信息:
- 专利标题： CARBONITRIDED BEARING MEMBER
- 申请号：EP15827899 申请日：2015-07-29
- 公开(公告)号：EP3176278A4 公开(公告)日：2017-12-27
- 发明人： NEISHI YUTAKA , SUZUKI TAKAHISA , KOYAMA TATSUYA , YAMASAKI SHINGO , KANETANI KOHEI , SADA TAKASHI
- 申请人： NIPPON STEEL & SUMITOMO METAL CORP , JTEKT CORP
- 专利权人： NIPPON STEEL & SUMITOMO METAL CORP,JTEKT CORP
- 当前专利权人： NIPPON STEEL CORPORATION, JP
- 当前专利权人地址： NIPPON STEEL CORPORATION, JP
- 优先权： JP2014153944 2014-07-29
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; C21D1/06 ; C21D9/40 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/54 ; C23C8/32 ; C23C8/80 ; F16C33/62
摘要：
Provided is a carbonitrided bearing part which has high hardenability and toughness, and is excellent in wear resistance and surface-originated flaking life. A carbonitrided bearing part of the present embodiment has a chemical composition containing, in mass%, C: 0.15 to 0.45%, Si: not more than 0.50%, Mn: 0.40 to 1.50%, P: not more than 0.015%, S: not more than 0.005%, Cr: 0.30 to 2.0%, Mo: 0.10 to 0.35%, V: 0.20 to 0.40%, Al: 0.005 to 0.10%, N: not more than 0.030%, and O: not more than 0.0015%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2). At surface, C concentration is 0.7 to 1.2%, N concentration is 0.15 to 0.6%, and Rockwell hardness HRC is 58 to 65. 1.20 2.20
IPC结构图谱:
| C | 化学；冶金 |
| --C22 | 冶金（铁的冶金入C21）；黑色或有色金属合金；合金或有色金属的处理 |
| ----C22C | 合金 |
| ------C22C38/00 | 铁基合金，例如合金钢 |