Method of manufacturing castings of active metal or alloy thereo

Details Method of manufacturing castings of active metal or alloy thereo Method of manufacturing castings of active metal or alloy thereo

1988-07-07

1989-09-19

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

1641221, 1643381, B22D 2500, B22D

Patent

active

048672246

ABSTRACT:
A method of manufacturing casting of an active metal or alloy having a unidirectional solidification structure is disclosed. This method comprises following steps; supplying an active metal or an alloy in powder form to a mold, preheating the powder in the preheating section of the mold, melting the powder in the narrow melt zone in the mold, moving the melt zone slowly, and cooling the bottom of the melt zone to gradually cause unidirectional solidification.

REFERENCES:
patent: 3714977 (1973-02-01), Terkelsen
patent: 4175609 (1979-11-01), El Gammal et al.
patent: 4665970 (1987-05-01), Ohno

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