发明名称 |
METAL ALLOY MASS FOR SEMI-SOLID FORMING |
摘要 |
A metal alloy mass for semi-solid forming is disclosed. After being air-cooled to room temperature from a temperature corresponding to a liquid fraction content of 30-70 %, the mass has a pore ratio of 2-20 % and preferably 3-8 %, as measured by image analysis. A metal alloy mass for semi-solid forming, cast from a liquid metal of which the gassing level, as measured by a solidification test under 80 hPa, is such that the sample has a volume pore ratio of 3-50 % and preferably 4-25 %, is also disclosed. The method for making said mass includes treating the alloy in a liquid state to add a soluble and chemically non-reactive gas such as hydrogen. The rheological properties of the semi-solid metal may thus be improved, whereby parts having a higher quality may be obtained. |
申请公布号 |
WO9727963(A1) |
申请公布日期 |
1997.08.07 |
申请号 |
WO1997FR00163 |
申请日期 |
1997.01.28 |
申请人 |
ALUMINIUM PECHINEY |
发明人 |
GARAT, MICHEL;PLUCHON, CHRISTIAN;LOUE, WILLEM;BRIMONT, MICHEL;TAVERNIER, MARC |
分类号 |
B22D1/00;B22D27/04;C22C1/00;C22C1/02;C22C1/08;C22C21/00 |
主分类号 |
B22D1/00 |
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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