发明名称 |
Methods of and apparatus for forming hollow metal articles |
摘要 |
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.
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申请公布号 |
US2005252263(A1) |
申请公布日期 |
2005.11.17 |
申请号 |
US20050125565 |
申请日期 |
2005.05.09 |
申请人 |
MACEWEN STUART R;HAMSTRA PETER;MALLORY ROBERT W;SHI YIHAI;MOULTON JAMES D |
发明人 |
MACEWEN STUART R.;HAMSTRA PETER;MALLORY ROBERT W.;SHI YIHAI;MOULTON JAMES D. |
分类号 |
B21D22/00;B21D26/047;B21D26/049;B21D51/24;(IPC1-7):B21D22/00 |
主分类号 |
B21D22/00 |
代理机构 |
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地址 |
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