基本信息:
- 专利标题： 一种低Ca、低Al焊丝钢的冶炼方法
- 专利标题（英）：Smelting method of low-Ca and low-Al welding wire steel
- 申请号：CN201810168636.5 申请日：2018-02-28
- 公开(公告)号：CN108396097A 公开(公告)日：2018-08-14
- 发明人： 薛正学 , 孟宪成 , 俞飞 , 王勇 , 张治广 , 梅忠
- 申请人： 唐山市德龙钢铁有限公司
- 申请人地址： 河北省唐山市乐亭县翔云岛林场临港路1号
- 专利权人： 唐山市德龙钢铁有限公司
- 当前专利权人： 迁安市九江线材有限责任公司
- 当前专利权人地址： 064400 河北省唐山市迁安市木厂口镇松汀村南
- 代理机构： 石家庄冀科专利商标事务所有限公司
- 代理人： 李羡民; 雷秋芬
- 主分类号： C21C5/34
- IPC分类号： C21C5/34 ; C21C7/06 ; C21C7/076 ; C22C38/02 ; C22C38/04 ; B23K35/30 ; B23K35/40
The invention discloses a smelting method of low-Ca and low-Al welding wire steel. The smelting method comprises the procedures of converter smelting, deoxidation alloying, heating slag burdening, LFfirst-section refining, LF second-section refining, continuous casting and the like. The first-section refining uses high-alkalinity slag for guaranteeing the submerged arc effect, reducing added nitrogen and improving the deoxidation effect; and the second-section refining uses low-alkalinity slag for modifying inclusions to effectively reduce Ca and Al contents in the steel. The smelting methodcan stably control the contents of calcium and aluminum in the welding wire steel as follows: the calcium content is not higher than 8 ppm, the aluminum content is not higher than 20 ppm, and the nitrogen content is not higher than 30 ppm, so that the drawing performance of the welding wire steel is prominently improved, the splashing in the welding process is reduced, and the characteristics of simple operation process and low operating cost are achieved.
公开/授权文献:
- CN108396097B 一种低Ca、低Al焊丝钢的冶炼方法 公开/授权日：2020-09-04
IPC结构图谱:
| C | 化学；冶金 |
| --C21 | 铁的冶金 |
| ----C21C | 生铁的加工处理，例如精炼、熟铁或钢的冶炼；熔融态下铁类合金的处理 |
| ------C21C5/00 | 碳钢的冶炼，例如普通低碳钢，中碳钢，或铸钢 |
| --------C21C5/04 | .平炉钢，例如西门子—马丁炉钢的冶炼 |
| ----------C21C5/30 | ..吹炼的调节或控制 |
| ------------C21C5/34 | ...通过熔池吹 |