基本信息:
- 专利标题： 含稀土元素的低硅低铝马氏体不锈钢及其冶炼方法
- 专利标题（英）：Low-silicon and low-aluminum martensitic stainless steel containing rare earth element and smelting method thereof
- 申请号：CN201911022961.1 申请日：2019-10-25
- 公开(公告)号：CN110565030A 公开(公告)日：2019-12-13
- 发明人： 吴铖川 , 王洪利 , 何玉东 , 王唐林
- 申请人： 成都先进金属材料产业技术研究院有限公司
- 申请人地址： 四川省成都市中国(四川)自由贸易试验区成都市青白江区城厢镇香岛大道1509号(铁路港大厦A区13楼A1301-1311、1319室)
- 专利权人： 成都先进金属材料产业技术研究院有限公司
- 当前专利权人： 成都先进金属材料产业技术研究院有限公司
- 当前专利权人地址： 四川省成都市中国(四川)自由贸易试验区成都市青白江区城厢镇香岛大道1509号(铁路港大厦A区13楼A1301-1311、1319室)
- 代理机构： 成都虹桥专利事务所
- 代理人： 张小丽
- 主分类号： C22C38/52
- IPC分类号： C22C38/52 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/02 ; C22C38/06 ; C22C33/06 ; C21C5/52 ; C21C7/068 ; C21C7/10 ; C22B9/18
The invention belongs to the technical field of steel, and particularly relates to a low-silicon and low-aluminum martensitic stainless steel containing a rare earth element and a smelting method thereof. The technical problem to be solved by the invention is to provide a smelting method for a low-silicon and low-aluminum martensitic stainless steel containing a rare earth element. Based on the total mass of the low-silicon and low-aluminum martensitic stainless steel containing the rare earth element, the martensitic stainless steel comprises less than or equal to 0.10% of Si, less than or equal to 0.015% of Al, 0.08-0.15% of C and 0.010-0.020% of rare earth; the smelting method comprises the following steps of electric arc furnace refining, LF furnace refining, VOD furnace refining, LF furnace deep refining, pouring and electroslag remelting, wherein the rare earth is added in the LF furnace deep refining process after the reduction, and then steel is produced. The method provided bythe invention can change the morphology of non-metallic inclusions in low-silicon and low-aluminum martensitic stainless steel.