
基本信息:
- 专利标题: 控制非调质高强螺栓钢高包辛格效应的方法
- 专利标题(英):Method for controlling non-quenched and tempered high-intensity screw bolt steel high Bauschinger effect
- 申请号:CN201710215163.5 申请日:2017-04-02
- 公开(公告)号:CN106834639A 公开(公告)日:2017-06-13
- 发明人: 罗志俊 , 李舒笳 , 孙齐松 , 王晓晨 , 马跃 , 王猛 , 徐士新
- 申请人: 首钢总公司
- 申请人地址: 北京市石景山区石景山路68号
- 专利权人: 首钢总公司
- 当前专利权人: 首钢总公司
- 当前专利权人地址: 北京市石景山区石景山路68号
- 代理机构: 北京华谊知识产权代理有限公司
- 代理人: 刘月娥
- 主分类号: C21D8/00
- IPC分类号: C21D8/00
The invention relates to a method for controlling the non-quenched and tempered high-intensity screw bolt steel high Bauschinger effect, and belongs to the field of control of a deep processing drawing technology. The method comprises the following process steps and control technical parameters that the Stelmor air cooling control is used; a heat insulation cover is used for covering; the cooling speed after the cooling is controlled to be 1 to 3 DEG C/s; the obtained ferrite content is 45 to 55 percent; a ferrite-pearlite type hot rolling material is subjected to deep processing drawing treatment to realize instant cooling and reinforcement; the drawing area reducing rate is controlled to be 20 to 25 percent. The method has the advantages that the cold drawing area reducing rate and the steel ferrite ratio of the ferrite-pearlite type non-quenched and tempered high-intensity screw bolt are controlled to obtain the optimal positive dislocation density inside tissues; the high Bauschinger effect value is obtained.
IPC结构图谱:
C | 化学;冶金 |
--C21 | 铁的冶金 |
----C21D | 改变黑色金属的物理结构;黑色或有色金属或合金热处理用的一般设备;通过脱碳、回火或其他处理使金属具有韧性 |
------C21D8/00 | 通过伴随有变形的热处理或变形后再进行热处理来改变物理性能 |