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71. 发明专利

JPH0324282A PRODUCTION OF STEEL SHEET PLATED WITH CHROMIUM 失效
公开(公告)号：JPH0324282A
公开(公告)日：1991-02-01
申请号：JP16030589
申请日：1989-06-22
申请人： KATAYAMA TOKUSHU KOGYO KK
发明人： SUGIKAWA HIROFUMI
IPC分类号： C25D5/26 , C23C14/02 , C23C14/14 , C23C14/16 , C23C28/02
摘要： PURPOSE:To develop steel sheets having a plated chromium layer which are excellent in specular properties, corrosion resistance and workability by heating stainless steel sheet or cold-rolled steel sheet in the hydrogen atmosphere and thereafter forming the plated film of specified metal by a vacuum deposition method and successively plating chromium thereon. CONSTITUTION:Stainless steel sheet or cold-rolled steel sheet is heated at 400-1000 deg.C for 1-10 minutes in the hydrogen atmosphere to remove passive film and oxidative film on the surface. Thereafter Co, Ni, Mo and Nb, etc., are deposited by evaporation in 0.1-5.0mum thickness on the surface thereof by a vacuum deposition device. The vapor deposited films of these metals are formed and also the alloy layer of both metals is formed in the interface of the vapor deposited film of these metals and the steel sheet material to be plated. Then chromium is plated in 0.1-5.0mum thickness on the plated metallic layer due to vapor deposition by an electroplating method. Thereafter steel sheet plated by chromium which is excellent in specular properties, corrosion resistance and workability is wound in a coil shape.

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