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409 条记录 (耗时 0.012 秒)

    Method of heat treatment of a steel product
    121.
    发明授权
    Method of heat treatment of a steel product 失效
    钢铁产品加热处理方法

    公开(公告)号：US3578512A

    公开(公告)日：1971-05-11

    申请号：US3578512D

    申请日：1968-05-17

    申请人： FUNAKUBO SEIKYO KK

    发明人： FUNAKUBO SHINNOSUKE

    IPC分类号： C21D1/10 ,  C21D9/32

    CPC分类号： C21D1/10 ,  Y02P10/253

    摘要： A METHOD OF HEAT-TREATING AND HARDENING A STEEL PRODUCT SUCH AS A TOOTHED WHEEL AND SIMILAR STRUCTURAL ELEMENTS, REQUIRING A HARDNESS AND ABRASION RESISTANCE ON PORTIONS OF ITS WORKING SURFACES INCREASED IN COMPARISON TO THE HARDNESS AND ABRASION RESISTANCE OF THE REMAINING PORTIONS COMPRISING THE STEPS OF PROVIDING ON THE SURFACE OF SAID PRODUCT AT LEAST ONE GROOVE SEPARATING THE SAID SURFACES OF PORTIONS OF REQUIRED INCREASED HARDNESS FROM THE REMAINING SURFACES; LOCALLY HEAT-TREATING THE SAID PORTIONS OF THE SURFACES REQUIRING AN INCREASED HARDNESS AS THEY ARE DIVIDED BY SAID AT LEAST ONE GROOVE AND SUBSEQUENTLY HARDENING BY QUENCHING THE HEAT-TREATED PORTIONS LEAVING THE REMAINING PORTIONS WITH ITS ORIGINAL HARDNESS AND ABRASION RESISTANCE.

    Method and apparatus for hardening gear teeth
    122.
    发明授权
    Method and apparatus for hardening gear teeth 失效
    用于硬化齿轮的方法和装置

    公开(公告)号：US3555233A

    公开(公告)日：1971-01-12

    申请号：US3555233D

    申请日：1969-03-20

    申请人： PARK OHIO INDUSTRIES INC

    发明人： PFAFFMAN GEORGE D ,  ARMSTRONG ROBERT G

    IPC分类号： C21D9/32 ,  H05B6/02 ,  H05B5/00 ,  H05B9/02

    CPC分类号： C21D9/32

    摘要： An inductive heating assembly is provided comprising a support block having an upper and a lower supporting surface and a front wall. A plurality of inductor sectors each including a recess defined by an upper leg and a lower leg and a nose are mounted on the support block with the recesses receiving the block and with the legs overlapping the upper and lower surfaces, respectively, and the nose extending along the front wall. The nose is shaped to fit between adjacent gear teeth and means is provided for passing current in series through the legs and the nose of each sector.