公开(公告)号：US11174528B2

公开(公告)日：2021-11-16

申请号：US15750734

申请日：2016-06-20

申请人： BEIJING HUALI FINE CHEMICAL CO., LTD.

发明人： Kejian Zhang ,  Shui Wang ,  Xuezhi Hao ,  Shengdong Ge

IPC分类号： C21D9/28 ,  C21D1/64 ,  C21D1/63 ,  C21D1/58 ,  C21D1/18 ,  C21D1/62

摘要： An oil-immersion quenching cooling precursor and an oil-immersion quenching cooling method includes an axle-type workpiece or a workpiece that has sections in an axle form. Several separation rings are arranged on the workpiece in the axial direction to separate the axle-type workpiece or the workpiece that has sections in an axle form into a plurality of sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece. sections before oil-immersion quenching cooling. In the method, there is a cutting procedure before a quenching cooling procedure. Several separation rings distributed in the axial direction are reserved outside a dimension required for the workpiece.