发明名称 |
METHODS OF PRESSURE FORMING METAL CONTAINERS AND THE LIKE FROM PREFORMS HAVING WALL THICKNESS GRADIENT |
摘要 |
<p>A method of forming a bottle-shaped or other contoured metal container by providing a hollow metal preform having a closed end and a wall thickness that decreases progressively in a direction away from the closed end, and subjecting the preform to internal fluid pressure to cause the preform to expand against the wall of a die cavity defining the desired container shape. The method may be employed in pressure-ram-forming procedures wherein a punch is advanced by means of a backing ram into the die cavity to displace and deform the closed end of the preform.</p> |
申请公布号 |
EP2523762(A4) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20110732595 |
申请日期 |
2011.01.11 |
申请人 |
NOVELIS, INC.;MONTEBELLO PACKAGING |
发明人 |
MALLORY, ROBERT;SHI, YIHAI |
分类号 |
B21D26/02;B21D51/26 |
主分类号 |
B21D26/02 |
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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