发明授权
- 专利标题： Making galvanized steel with excellent darkening resistance
- 专利标题（中）： 镀锌钢具有优异的耐光泽性
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申请号： US302800申请日： 1994-09-15
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公开(公告)号： US5472522A公开(公告)日： 1995-12-05
- 发明人: Jun Kawaguchi , Takao Ogino , Kensuke Mizuno
- 申请人： Jun Kawaguchi , Takao Ogino , Kensuke Mizuno
- 申请人地址： PA Plymouth Meeting
- 专利权人： Henkel Corporation
- 当前专利权人： Henkel Corporation
- 当前专利权人地址： PA Plymouth Meeting
- 优先权： JPX4-091775 19920317
- 主分类号： C23C22/07
- IPC分类号： C23C22/07 ; C23C22/13 ; C23C22/36 ; C23C22/73 ; C23C22/78 ; C23C22/83
摘要：
To form a darkening-resistant chromate ram on the surface of a galvanized steel sheet, the surface of the galvanized steel shut is treated with a phosphate treatment solution before it is chromate-treated in such a way that zinc phosphate crystals will cover from 10-60% of the substrate surface.
公开/授权文献
- US4480874A Retainer device for auger, roof and the like type bits 公开/授权日：1984-11-06