Apparatus for regulating the level of the line of contact of the

Details Apparatus for regulating the level of the line of contact of the Apparatus for regulating the level of the line of contact of the

1987-03-11

1988-02-09

Lin, Knuag Y.

Metal founding

Including means to directly apply magnetic force to work or...

By electromagnetic means

164466, 164418, B22D 2702

Patent

active

047235918

ABSTRACT:
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.

REFERENCES:
patent: 4456054 (1984-06-01), Henders
patent: 4457354 (1984-07-01), Dantzig et al.

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