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    NEEDLE ROLLER BEARING
    1.
    发明公开
    NEEDLE ROLLER BEARING 有权
    针滚子轴承

    公开(公告)号：EP1780428A1

    公开(公告)日：2007-05-02

    申请号：EP05768435.9

    申请日：2005-08-04

    申请人： NTN CORPORATION

    发明人： OISHI, Shinji c/o NTN Corporation ,  WATANABE, Yasuyuki c/o NTN Corporation

    IPC分类号： F16C33/46 ,  F16C19/46 ,  F16C33/56 ,  C21D9/40 ,  C22C38/00

    CPC分类号： F16C19/30 ,  C21D1/10 ,  C21D9/40 ,  F16C19/466 ,  F16C33/543 ,  F16C33/546 ,  F16C33/56 ,  F16C33/588 ,  Y02P10/253 ,  Y10T29/4968 ,  Y10T29/49684 ,  Y10T29/49687 ,  Y10T29/49691 ,  Y10T29/49693

    摘要： The object is to efficiently subject steel retainers of needle roller bearings to heat treatment in a short period of time even in small-lot production using compact treatment facilities, thereby producing retainers having improved resistance to wear and surface damage and high in fatigue strength and fracture strength as a whole.
    The steel retainer 3, which retains needle rollers 2, is formed from a steel plate containing 0.15 to 1.10% by mass of carbon. After forming, the steel plate is subjected to induction heat treatment comprising induction hardening and induction tempering. Such heat treatment can be carried out efficiently in a short period of time, using compact treatment facilities, even in small-lot production. The retainer 3 thus formed is sufficiently resistant to wear and surface damage, and is high in fatigue strength and fracture strength as a whole.

    摘要翻译： 本发明的目的在于，即使在使用紧凑型处理设备的小批量生产中，也能够在短时间内高效地对滚针轴承的钢制保持器进行热处理，由此制造具有改善的耐磨性和表面损伤性以及高疲劳强度和断裂的保持器 作为一个整体的力量。 保持滚针2的钢保持架3由含有0.15〜1.10质量％的碳的钢板形成。 成形后，钢板经受包括感应淬火和感应淬火的感应热处理。 即使在小批量生产中，也可以使用紧凑型处理设备在短时间内有效地进行这种热处理。 这样形成的保持器3具有足够的耐磨性和表面损伤性，并且整体上具有高的疲劳强度和断裂强度。