METHOD FOR MAKING METALLIC BLANKS BY PRESSURE DIE CASTING AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 2002 - IPC

Abstract RU 2193945 C2

FIELD: manufacture of metallic castings, mainly in horizontal pressure die casting machines. SUBSTANCE: method comprises steps of pouring melt metal overheated by 40-70o K into intermediate vessel whose inlet opening is closed by plunger. At opposite side press-mold has additional pressing chamber with counter-plunger. After removal of counter-plunger inner space of pressing chambers and cavities of mold are connected with vacuumizing system. When main plunger is removed, melt metal is sucked by action of vacuum into mold and fills pressing chambers. At applying pressure 200-500 MPa upon metal at both sides metal shrinkage is compensated and accurate reproduction of casting is realized. EFFECT: enhanced quality of castings. 3 cl, 1 dwg

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RU 2 193 945 C2

Authors

Korostelev V.F.

Klimenko M.E.

Stolbov M.S.

Russkikh S.V.

Dates

2002-12-10Published

2000-05-30Filed