发明名称 |
Apparatus for regulating the level of the line of contact of the free surface of the metal with the ingot mould in a vertical casting operation |
摘要 |
The invention relates to an apparatus for regulating the level of the line of contact of the free surface of the metal with the mould in vertical casting. It comprises a mould formed by a material having a level of resistivity of higher than 5 mu omega .cm, surrounded by an annular coil in which at least one alternating electrical current flows. It finds application in the casting of metallurgical semi-manufactured products, in particular of aluminium and alloys thereof, such as for example lithium-bearing alloys, and in which there is a wish to have both a cortical zone of virtually zero thickness, a fine grain without the previous addition of refining agents, and an absence of pitting.
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申请公布号 |
US4723591(A) |
申请公布日期 |
1988.02.09 |
申请号 |
US19870024694 |
申请日期 |
1987.03.11 |
申请人 |
CEGEDUR SOCIETE DE TRANSFORMATION DE L'ALUMINIUM PECHINEY |
发明人 |
VIVES, CHARLES;RIQUET, JEAN-PIERRE |
分类号 |
B22D11/04;B22D11/059;B22D11/10;B22D11/103;B22D11/119;B22D11/16;C22C21/06;(IPC1-7):B22D27/02 |
主分类号 |
B22D11/04 |
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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