Die casting apparatus and process comprising in-die plunger dens

Details Die casting apparatus and process comprising in-die plunger dens Die casting apparatus and process comprising in-die plunger dens

1982-08-16

1988-10-25

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164320, B22D 2711

Patent

active

047796650

ABSTRACT:
A die casting process and apparatus is described for forming a metal casting having a bore therethrough surrounded by dense, nonporous metal. During solidification, a plunger core is driven through the metal to substantially form the bore. The plunger core comprises a metal-penetrating conical tip that laterally displaces metal in response to plunger core advance to densify the metal about the bore. The plunger core tip is received into a correspondingly shaped recess so that only a thin metal flash is formed therebetween, which flash is readily removed by punching to complete the bore.

REFERENCES:
patent: 3106002 (1963-10-01), Bauer
patent: 4380261 (1983-04-01), Suzuki et al.

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