基本信息:
- 专利标题： 一种钢材的淬火方法、热成型工艺以及钢材工件
- 专利标题（英）：STEEL QUENCHING METHOD, THERMOFORMING PROCESS, AND STEEL WORKPIECE
- 申请号：PCT/CN2022/085246 申请日：2022-04-06
- 公开(公告)号：WO2022267614A1 公开(公告)日：2022-12-29
- 发明人： 赵启平 , 孙铭
- 申请人： 威乐(宁波)新材料科技有限公司
- 申请人地址： 中国浙江省宁波市北仑区新碶街道辽河路商务大厦1幢1035室, Zhejiang 315194
- 专利权人： 威乐(宁波)新材料科技有限公司
- 当前专利权人： 威乐(宁波)新材料科技有限公司
- 当前专利权人地址： 中国浙江省宁波市北仑区新碶街道辽河路商务大厦1幢1035室, Zhejiang 315194
- 代理机构： 北京专赢专利代理有限公司
- 优先权： CN202110707123.9 2021-06-25
- 主分类号： C21D1/19
- IPC分类号： C21D1/19 ; C22C38/00 ; C21D11/00 ; C21D6/002 ; C21D6/005 ; C21D6/008 ; C21D7/10 ; C21D7/13 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/20 ; C22C38/22 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/38
Disclosed is a steel quenching method, characterized in that: in a first stage, a fluid cooling medium is in direct contact, in a fluid blowing mode, with the surface of a steel workpiece which is heated to be AC3 or above, so that the temperature of the steel workpiece is reduced to 250-450℃ within a control duration of 2-6 seconds; in a second stage, the fluid cooling medium is in direct contact with the surface of the steel workpiece in the fluid blowing mode, so that the temperature of the steel workpiece is reduced to 80℃ or below within a control duration of 6-20 seconds. The steel workpiece prepared in the present invention has a tensile strength of 1300-1900 MPa, a yield strength of 1000-1300 MPa, and a Rockwell hardness of 71-76 HRA, and when the steel workpiece has a thickness of 0.7-2.05 mm, the bending angle is greater than or equal to 40°.