HEAT-TREATED ROLLER BEARING RING
    7.
    发明申请

    公开(公告)号:US20220268315A1

    公开(公告)日:2022-08-25

    申请号:US17673942

    申请日:2022-02-17

    申请人: AKTIEBOLAGET SKF

    IPC分类号: F16C33/62 F16C33/34 C21D9/38

    摘要: An inner ring or and outer ring for a roller bearing includes: 0.30-0.45 wt. % carbon, 0.1-0.7 wt. % silicon, 0.6-0.9 wt. % manganese, 0.9-1.2 wt. % chromium, 0.15-0.7 wt. % molybdenum, 0-2.0 wt. % nickel, 0-0.02 wt. % phosphorus, and 0 -0.02 wt. % sulfur, the balance being iron and unavoidable impurities. The microstructure of the steel composition contains bainite, and a carbonitrided case layer is provided on a surface of the inner ring or outer ring.