| 发明名称 |
Flow forming method |
| 摘要 |
A method of forming a shaped article. The method comprises providing a pre-form 40 comprising a chromium molybdenum vanadium steel alloy, heat treating the pre-form to obtain a surface hardness of between 420 and 480 according to the Vickers hardness test, and, subsequent to the heat treating step, flow forming the pre-form 40 to shape the pre-form. |
| 申请公布号 |
EP2857531(A3) |
申请公布日期 |
2015.04.22 |
| 申请号 |
EP20140183234 |
申请日期 |
2014.09.02 |
| 申请人 |
ROLLS-ROYCE PLC |
发明人 |
TUFFS, MARTIN;BOSWELL, JOHN HAROLD;WHITEHURST, GEORGE WILLIAM;HILL, PAUL OWEN;RAWSON, MARTIN JOHN |
| 分类号 |
C21D9/08;B21D22/14;C21D1/25;C21D8/10;C21D9/28 |
主分类号 |
C21D9/08 |
| 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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