| 摘要 |
PCT No. PCT/GB84/00130 Sec. 371 Date Dec. 7, 1984 Sec. 102(e) Date Dec. 7, 1984 PCT Filed Apr. 18, 1984 PCT Pub. No. WO84/04264 PCT Pub. Date Nov. 8, 1984.A squeeze formed aluminum alloy article, such as a piston, is formed with a re-entrant cavity (14) by locating an isostatically compacted salt core (10) in the mould cavity of the squeeze forming press prior to introduction of the molten metal therein. The core (14) is subsequently dissolved from the squeeze formed article to provide a corresponding shape to the article which does not require subsequent machining. |
