基本信息:
- 专利标题：
- 申请号：BRPI0806343 申请日：2008-01-09
- 公开(公告)号：BRPI0806343A2 公开(公告)日：2011-09-06
- 发明人： MATSUMURA KENICHIRO , YANABA KOHJI , YASUDA YUUKI
- 申请人： NIPPON STEEL CORP
- 专利权人： NIPPON STEEL CORP
- 当前专利权人： NIPPON STEEL CORP
- 优先权： JP2007000990 2007-01-09
- 主分类号： C23F17/00
- IPC分类号： C23F17/00 ; C21D9/46 ; C21D9/573 ; C22C38/00 ; C22C38/04 ; C22C38/58
摘要：
A method using a continuous annealing furnace where a cooling method of a cooling zone including part or all of the temperature range of the steel sheet of 600 to 250°C following the heating for recrystallization is one or more of gas cooling, effusion cooling, and coaling pipe cooling, or a joint cold rolled steel sheet/hot dip galvanized steel sheet facility having such a contiguous annealing furnace, to continuously anneal cold rolled steel sheet to produce high strength cold rolled steel sheet, characterized by exposing the steel sheet surface to an iron-oxidizing atmosphere in the steel sheet temperature range to make the surface oxidize, pickling the sheet at the outlet side of the annealing furnace, then iron- or Ni-plating the sheet to 1 to 50 mg/m 2 .