发明名称 |
DIFFERENTIALLY COATED GALVANIZED STEEL STRIP AND METHOD AND APPARATUS FOR PRODUCING SAME |
摘要 |
<p>A differentially coated, galvanized steel strip is produced by hot dip coating both sides of a steel strip and adjusting the weight of coating metal on opposite sides of the strip to produce a light coated side and a heavy coated side. The strip is then precooled to fully solidify the heavy coated side following which the galvanized strip is subjected to a treating step in which simultaneously the light coated side is heated and the heavy coated side is cooled. This fully transforms the light coated side to iron-zinc alloy throughout while only partially transforming an inner layer on the heavy coated side to iron-zinc alloy. The outer layer on the heavy coated side consists entirely of coating metal, and there are no intermittent bleedthroughs of iron-zinc alloy to the outer surface of the heavy coated side.</p> |
申请公布号 |
CA1247470(A) |
申请公布日期 |
1988.12.27 |
申请号 |
CA19880558428 |
申请日期 |
1988.02.08 |
申请人 |
INLAND STEEL COMPANY |
发明人 |
PATIL, RAM S.;JOHNSON, DONALD F.;QUASNEY, JOHN T. |
分类号 |
B32B15/18;(IPC1-7):B32B15/18 |
主分类号 |
B32B15/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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