发明名称 |
SURFACE-TREATED STEEL SHEET REDUCED IN PLATING DEFECTS AND PRODUCTION THEREOF. |
摘要 |
A method of inhibiting failures in plating at a low cost in a stabilized manner in the step of subjecting a steel sheet containing a highly oxidizable element such as Si, Mn, P, Ti, Nb, Al, Ni, Cu, Mo, V, Cr or B to hot-dip galvanizing and hot-dip alloy galvanizing in a continuous line after annealing or to electroplating after annealing; and a surface-treated steel sheet reduced in plating defects. A surface-treated steel sheet which is reduced in plating defects, has an iron plating layer just under a zinc plating layer or a zinc alloy plating layer and has a layer enriched with steel ingredients just under the iron plating layer, is produced by applying iron plating to at least one side of a steel sheet in such a manner that the coating weight is 0.1-10 g/cm<2> and the oxygen content of the plating layer is 0.1-10 wt.%, followed by annealing and then zinc or zinc alloy plating. It is preferable to use an electroplating bath containing 0.1-10 g/l of Fe<3><+> ions and a carboxylic acid or an alkali metal salt thereof in the iron plating. |
申请公布号 |
EP0591547(A1) |
申请公布日期 |
1994.04.13 |
申请号 |
EP19930906849 |
申请日期 |
1993.03.30 |
申请人 |
KAWASAKI STEEL CORPORATION |
发明人 |
TOBIYAMA, YOICHI, KAWASAKI STEEL CORPORATION;KATO, CHIAKI, KAWASAKI STEEL CORPORATION;MORITO, NOBUYUKI, KAWASAKI STEEL CORPORATION;UMINO, SHIGERU, KAWASAKI STEEL CORPORATION |
分类号 |
C23C2/02;C25D3/20;C25D5/10;(IPC1-7):C23C2/06 |
主分类号 |
C23C2/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|