基本信息:
- 专利标题： 一种590MPa级高强度低合金热轧酸洗带钢及其生产方法
- 申请号：CN201710942982.X 申请日：2017-10-11
- 公开(公告)号：CN107746939B 公开(公告)日：2019-09-03
- 发明人： 王智权 , 郭子峰 , 郭佳 , 张 , 冯军 , 李玉鹏 , 周娜 , 陈斌 , 于洋 , 刘文鑫 , 吕宝峰 , 宋春华 , 陈波
- 申请人： 首钢集团有限公司 , 北京首钢股份有限公司
- 申请人地址： 北京市石景山区石景山路68号
- 专利权人： 首钢集团有限公司,北京首钢股份有限公司
- 当前专利权人： 首钢集团有限公司,北京首钢股份有限公司
- 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： 北京华沛德权律师事务所
- 代理人： 马苗苗
- 主分类号： C21D8/04
- IPC分类号： C21D8/04 ; C22C38/04 ; C22C38/12
590-MPa-level high-strength low-content-alloy hot-rolled acid-washed strip steel is disclosed. The strip steel includes, by weight, 0.05-0.1% of C, not more than 0.1% of Si, 0.8-1.5% of Mn, not more than 0.02% of P, not more than 0.008% of S, and 0.01-0.05% of Nb, with the balance being Fe and unavoidable impurities. A microcosmic metallographic structure includes ferrite and pearlite, wherein thevolume ratio of the ferrite is greater than 95%. The tensile strength of the strip steel is not less than 590 MPa, and the hole expansion rate [lambda] is not less than 65%. Through the component design, a special ferrite-pearlite structure is obtained, existence of the pearlite does not worsen forming performance, growth of ferrite crystal grains is significantly inhibited, ferrite crystal grains the dimension of which is 6 [mu]m or below are obtained, and forming performance is improved. Compared with similar ferrite-pearlite steel, a product prepared by the method has sufficient strength and has excellent hole-expanding and flanging properties.
公开/授权文献:
- CN107746939A 一种590MPa级高强度低合金热轧酸洗带钢及其生产方法 公开/授权日：2018-03-02
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 |
| ------C21D7/00 | 通过变形改变铁或钢的物理性能 |
| --------C21D8/02 | .在生产钢板或带钢时 |
| ----------C21D8/04 | ..生产深冲钢板或带钢 |