DIE CASTING APPARATUS FOR CASTING NON-BLOW HOLE PRODUCT

Japanese Patent JP2743789

B2

PURPOSE: To easily produce a cast product having uniform sp. gr. and excellent tensile strength.
CONSTITUTION: A movable die 2 is shifted to execute the die-clamp with a fixed die 1. Successively, molten metal is poured from a pouring hole 4a and a piston 5 is shifted, and while evacuating the inner parts of cavities 1a, 2a, the pouring of molten metal is executed. The molten metal filled up in the inner parts of the cavities 1a, 2a is further risen and flows into a forced cooling passage 6 and cooled there, and solidified to plug an inlet of the molten metal. At this time, a runner 3 part is cooled and the molten metal is quickly solidified to make the inner parts of the cavities 1a, 2a in an air-tightening condition. Just after, this the pressurization is executed to the molten metal filled up in the inner parts of the cavities 1a, 2a by the pressurizing device 9. After the molten metal solidifies and the casting is completed, the movable die 2 is shifted to open the dies 1, 2, and the casting is taken out from the movable die 2.

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Takeo Maeda
Omi Makoto

JP26763293A

April 22, 1998

October 26, 1993

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SHIMADZU CORPORATION

B22D18/02; B22D17/14; B22D17/22; B22D18/06; (IPC1-7): B22D17/14; B22D17/22

JP259160A
JP6427761A
JP4330A

Yoshiaki Nishioka

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