METHOD FOR PRESSURE DIE-CASTING WITH CRYSTALLIZATION AND DEVICE TO IMPLEMENT IT Russian patent published in 1995 - IPC

FIELD: pressure die-casting. SUBSTANCE: once metal has been poured in press chamber, a vacuum conductor is inserted. This represents detachable shape-generating insertion pieces, fastened by spring ring. Evacuation of the press chamber is performed through the insertion pieces. Then plunger presses the insertion pieces out into the metal. Insertion piece cavity is filled with the metal. The insertion pieces are withdrawn together with the casting. Spring loaded chamber is fixed on the plunger for sealing. The chamber is connected to vacuum-system. EFFECT: high quality of castings. 3 cl, 4 dwg