发明名称 |
METHOD OF COATING CARBON STEEL |
摘要 |
<p>A method of preparing carbon steel strip and sheet for hot dip metallic coating in a Selas-type direct-fired furnace, wherein the atmosphere in the furnace is controlled to contain from about 3% oxygen to about 2% excess combustibles by volume, thereby forming a thin iron oxide film on the carbon steel surfaces. The strip and sheet is then heated in a subsequent furnace containing at least 5% hydrogen by volume at a temperature sufficient to reduce the oxide film, viz., at least about 675.degree.C. The direct-fired furnace is preferably operated at stoichiometrically equivalent fuel:air ratios.</p> |
申请公布号 |
CA1067000(A) |
申请公布日期 |
1979.11.27 |
申请号 |
CA19750233290 |
申请日期 |
1975.08.12 |
申请人 |
ARMCO STEEL CORPORATION |
发明人 |
BYRD, FRED;COMPTON, THOMAS A.;PIERSON, MARVIN B.;DUNBAR, FRANK C. |
分类号 |
C21D1/76;C21D9/46;C21D9/56;C23C2/02;C23C2/38;C23C2/40;(IPC1-7):23C1/00 |
主分类号 |
C21D1/76 |
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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