发明名称 |
METHODS OF AND APPARATUS FOR FORMING HOLLOW METAL ARTICLES |
摘要 |
<p>In hydroforming of hollow metal articles in a die, such as pressure-ram-forming procedures, a method of decreasing cycle time of the forming process, while ensuring acceptable product properties and avoiding failures, by modeling the process using finite element analysis to establish a pressure-time history that optimizes the forming operation and applies failure limits to selected variables such as minimum wall thickness or maximum strain rate, and transferring this pressure-time history to a computer controlling the forming process. Thermocouple and/or continuity sensors are incorporated into the die wall and connected to the computer so as to provide active feedback from the die to the control of the process.</p> |
申请公布号 |
EP1747075(B1) |
申请公布日期 |
2014.07.09 |
申请号 |
EP20050742599 |
申请日期 |
2005.05.12 |
申请人 |
NOVELIS, INC. |
发明人 |
MACEWEN, STUART R.;SHI, YIHAI;HAMSTRA, PETER;MALLORY, ROBERT, WILLIAM;MOULTON, JAMES, D. |
分类号 |
B21D51/26;B21D22/00;B21D26/033;B21D26/041;B21D26/047;B21D26/049;B21D51/24 |
主分类号 |
B21D51/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|