基本信息:
- 专利标题： 一种冷镦钢及其制造工艺
- 申请号：CN201710651606.5 申请日：2017-08-02
- 公开(公告)号：CN107447157B 公开(公告)日：2020-01-14
- 发明人： 刘立德 , 袁传信 , 陈景玉 , 李燚 , 龙国荣 , 李正嵩 , 高长益 , 叶雅妮 , 张东升 , 陈海英 , 丁云江
- 申请人： 首钢水城钢铁(集团)有限责任公司
- 申请人地址： 贵州省六盘水市钟山区巴西中路
- 专利权人： 首钢水城钢铁(集团)有限责任公司
- 当前专利权人： 首钢水城钢铁(集团)有限责任公司
- 当前专利权人地址： 贵州省六盘水市钟山区巴西中路
- 代理机构： 北京超凡志成知识产权代理事务所
- 代理人： 吴强
- 主分类号： C22C33/04
- IPC分类号： C22C33/04 ; C22C38/04 ; C22C38/02 ; C22C38/06 ; C21C7/06 ; B22D11/18
The invention relates to the field of metallurgy, and discloses cold heading steel and a manufacturing technology thereof. The manufacturing technology of the cold heading steel comprises the steps of smelting, refining, casting and steel rolling. In the step of the refining, Al and calcium carbide are used to make white slag for deoxidation on molten steel; the refined molten steel comprises the following components, 0.17-0.19wt% of C, less than or equal to 0.07wt% of Si, 0.80-0.88wt% of Mn, less than or equal to 0.020wt% of P, less than or equal to 0.015wt% of S, 0.025-0.035wt% of Al, 25-35ppm of Ca, less than or equal to 10ppm of [O], and the balance impurities and Fe; and the degree of superheat of the molten steel of a tundish in the step of the casting is 30-40 DEG C. According to the manufacturing technology, Si increasing can be avoided effectively, good drawability of the finished cold heading steel can be ensured, the casting is stable, a nozzle is not prone to nodulation, and smooth production is facilitated.
公开/授权文献:
- CN107447157A 一种冷镦钢及其制造工艺 公开/授权日：2017-12-08