| 发明名称 |
PROCEDE DE FORMAGE DE RECIPIENTS SANS SOUDURE EN METAL REVETU ET RECIPIENTS OBTENUS |
| 摘要 |
Sheet steel having differentially coated surfaces of corrosion-resistant metal for use in drawing and ironing seamless articles and the method of forming said articles including coating the opposite surfaces of the sheet steel with metallic coatings having differing lubricity, drawing the coated sheet into a preform and ironing the preform. |
| 申请公布号 |
BE755818(A1) |
申请公布日期 |
1971.03.08 |
| 申请号 |
BED755818 |
申请日期 |
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| 申请人 |
BETHLEHEM STEEL CORP., 701 EAST THIRD STREET, BETHLEHEM, PENNSYLVANIE, (E.U.A.), |
发明人 |
D. C. SHAH;G. W. WARD;R. L. WHITELEY. |
| 分类号 |
B21C9/00;B21D22/20;(IPC1-7):21K/ |
主分类号 |
B21C9/00 |
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代理人 |
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