GENERAL DESCRIPTION

METAL CASTING PROCESSES
PRESSURE DIE CASTING (TRYKSTØBNING)

©Institut for Procesteknik
Danmarks Tekniske Universitet 1996

In Pressure Die Casting the molten metal is forced into a reusable mold and help under pressure until solidification occurs. Very fine surfaces, tight tolerances, complex geometry and compact material (not porous) can be obtained.

Normally used for metals vith lower melding temperatures than steel. For low melting-point metals like zinc, tin and lead the socalled hot chamber die casting is used. For other metals the cold chamber die casting is applied.

Economy

For larger production volumes (>30.000) the following equation can be used:

C = 2,36 * cost of the material + 5,13

This applies for aluminium on cold chamber machines.

For other calculations see the paper "Early cost estimation for die casting" where a more comprehensive estimation method is described.