基本信息:
- 专利标题： 방향성 전자기 강판의 제조 방법
- 专利标题（英）：Producing method of grain-oriented electrical steel sheet
- 专利标题（中）：面向电工钢板的生产方法
- 申请号：KR1020110016971 申请日：2011-02-25
- 公开(公告)号：KR101237190B1 公开(公告)日：2013-02-25
- 发明人： 우시가미요시유끼 , 무라까미겐이찌
- 申请人： 신닛테츠스미킨 카부시키카이샤
- 申请人地址： *-*, Marunouchi *-chome, Chiyoda-ku, Tokyo, Japan
- 专利权人： 신닛테츠스미킨 카부시키카이샤
- 当前专利权人： 신닛테츠스미킨 카부시키카이샤
- 当前专利权人地址： *-*, Marunouchi *-chome, Chiyoda-ku, Tokyo, Japan
- 代理人： 장수길; 성재동
- 主分类号： C21D8/12
- IPC分类号： C21D8/12 ; C22C38/02
Production method of the directional electromagnetic steel sheet according to the present invention, for the slabs, Si 2.0 mass% to 7.0 mass%, C of 0.04 mass% to 0.07 mass%, acid-soluble Al to 0.015 mass% to 0.035 mass% or less, Mn a is greater than 0% by weight In addition, 0.20% or less, N a is greater than 0% by weight In addition, 0.003% by mass or less, S a is greater than 0% by weight addition step, the slab heating a slab containing less than 0.003% by weight a hot rolling by for the first rolling and the step of forming the plate, a step of the first rolling plate to form a second rolled sheet by cold rolling, and the second rolled sheet, the decarburization and nitriding of performing decarburization and nitriding at the same time in the annealing step, and finish annealing comprising the step, wherein the decarburization and nitriding annealing processes, the concentration of the ammonia in the atmosphere in the first half of the furnace for performing the process according to the second half of the no- It is lower than the concentration of the ammonia in the atmosphere.
公开/授权文献:
- KR1020120097639A 방향성 전자기 강판의 제조 방법 公开/授权日：2012-09-05
信息查询:
EspacenetIPC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 |
| --------C21D8/12 | .在生产具有特殊电磁性能的产品时 |