发明名称 |
Process for controlling snout zinc vapor in a hot dip zinc based coating on a ferrous base metal strip |
摘要 |
A process for suppressing zinc vapor in the snout of a continuous line for hot dip coating one side or both sides of a ferrous base metal strip with a molten zinc or zinc based alloy by maintaining the atmosphere within the snout to include about 1-8% hydrogen by volume and about 300 ppm to 4500 ppm water vapor with the balance being one or more inert gases, such as nitrogen. The atmosphere has a hydrogen/water vapor ratio of at least 4 to 1, or higher. This atmosphere is oxidizing to zinc vapor but non-oxidizing to the ferrous strip.
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申请公布号 |
US4557953(A) |
申请公布日期 |
1985.12.10 |
申请号 |
US19840635513 |
申请日期 |
1984.07.30 |
申请人 |
ARMCO INC. |
发明人 |
BOSTON, STEVEN L.;CAUDILL, FORRESTER;ARNOLD, JERRY L. |
分类号 |
C23C2/00;C23C2/02;C23C2/06;C23C2/36;(IPC1-7):C23C2/06 |
主分类号 |
C23C2/00 |
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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