发明名称 |
A preparation process for coextrusion billets with multiple metallic cylindrical layers. |
摘要 |
<p>Coextrusion billets of two or more concentric metallic layers are treated by a hot isostatic pressing process and, then, may be succeeded by heating to an elevated temperature followed by quenching in order to form a diffused bondline between the contiguous touching metal layers, which after extruding and reducing into tubing, is relatively free of bondline defects. <IMAGE></p> |
申请公布号 |
EP0454911(A1) |
申请公布日期 |
1991.11.06 |
申请号 |
EP19900304425 |
申请日期 |
1990.04.25 |
申请人 |
TELEDYNE INDUSTRIES INC |
发明人 |
WANG, CHUN TSIN;SCANLON, ROBERT H. |
分类号 |
B21C23/22;B21C37/06;B23K20/02;C22F1/18;G21C3/06 |
主分类号 |
B21C23/22 |
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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