基本信息:
- 专利标题： 焊接部的耐腐蚀性及强度优异的铁素体系不锈钢及TIG焊接结构物
- 专利标题（英）：Ferrite stainless steel exhibiting excellent corrosion resistance and strength in weld zones, and tig-welded structure
- 申请号：CN201280015893.6 申请日：2012-03-29
- 公开(公告)号：CN103459641A 公开(公告)日：2013-12-18
- 发明人： 松桥透 , 中田潮雄
- 申请人： 新日铁住金不锈钢株式会社
- 申请人地址： 日本东京
- 专利权人： 新日铁住金不锈钢株式会社
- 当前专利权人： 新日铁住金不锈钢株式会社
- 当前专利权人地址： 日本东京
- 代理机构： 永新专利商标代理有限公司
- 代理人： 周欣; 陈建全
- 优先权： 2011-072269 2011.03.29 JP; 2012-053263 2012.03.09 JP
- 国际申请： PCT/JP2012/058422 2012.03.29
- 国际公布： WO2012/133681 JA 2012.10.04
- 进入国家日期： 2013-09-27
- 主分类号： C22C38/00
- IPC分类号： C22C38/00 ; B21B3/02 ; B23K9/167 ; B23K9/23 ; C22C38/28 ; C22C38/60 ; B23K103/04 ; C21D9/46
Provided are: a ferrite stainless steel that exhibits excellent weld-zone strength and excellent weld-zone corrosion resistance, particularly with respect to crevice corrosion, even if an argon-gas shield is not used during TIG welding; and a structure comprising said steel. In an ordinarily-corrosive environment, the corrosion resistance of a ferrite stainless steel containing prescribed amounts of constituents can be increased by using constituent mass percentages that satisfy relation 1. In a more corrosive environment, a welded structure that resists crevice corrosion can be produced by not only having the relationship between the constituents of the steel satisfy relation 1 but also having the relationship between the thickness of the steel sheet and the length of the weld bead exposed on the back surface satisfy relation 2. Weld strength can also be improved by having the amounts of niobium and vanadium satisfy relation 3, resulting in a welded structure exhibiting high weld strength. (Relation 1) Si + 2.5Al + 3Ti <= 1.50 (Relation 2) 0 < Wb/2t <= 1.50 (t being the thickness of the material being welded and Wb being the length of the weld bead exposed on the back surface) (Relation 3) Nb * V >= 0.01
公开/授权文献:
- CN103459641B 焊接部的耐腐蚀性及强度优异的铁素体系不锈钢及TIG焊接结构物 公开/授权日：2015-09-09
IPC结构图谱:
| C | 化学；冶金 |
| --C22 | 冶金（铁的冶金入C21）；黑色或有色金属合金；合金或有色金属的处理 |
| ----C22C | 合金 |
| ------C22C38/00 | 铁基合金，例如合金钢 |