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Patent Searching and Data


Title:
CASTING APPARATUS
Document Type and Number:
Japanese Patent JPH07185779
Kind Code:
A
Abstract:

PURPOSE: To surely cast small capacity of molten metal into a mold without cooling.

CONSTITUTION: A metal melting furnace is constituted with a crucible 10 being openable in a bottom wall, a furnace body for incorporating the crucible and the mold 2 at the lower part of the crucible. This metal melting furnace is evacuated from a gas exhaust hole with a vacuum pump to reduce the pressure in the furnace. After reducing the pressure, inert gas is introduced from a inert gas introducing hole and the metal in a crucible is melted by impressing the high frequency electric power into a high frequency induction coil 19, and after melting, the gas is exhausted from a gas exhaust hole to reduce the pressure in the furnace, and the bottom wall of the crucible is opened to drop the molten metal into a sprue 2a in the mold. Pressurizing gas is introduced from a pressurizing gas introducing hole and divided into the upper and the lower parts with a dividing part 37a, and the pressures at the upper part and the lower part to the bottom wall of the crucible are made to be the same pressure level with a flow straightener 38 or the pressure of the upper part is made to be higher than the lower part to cast the molten metal.


Inventors:
BETSUMIYA TOSHIAKI
NAKADA KAZUNORI
Application Number:
JP1993000348190
Publication Date:
July 25, 1995
Filing Date:
December 24, 1993
Export Citation:
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Assignee:
SANSHA ELECTRIC MFG CO LTD
International Classes:
A61C13/20; B22D23/00; B22D45/00; F27B14/04; F27B14/06; F27B14/10; (IPC1-7): B22D23/00; A61C13/20; B22D45/00; F27B14/04; F27B14/06; F27B14/10