Pressure Die Casting

Pressure Die Casting
Pressure die casting can process nonferrous alloys that have low melting points: aluminum, zinc, magnesium, copper, lead, tin, silver, etc.
Pressure die casting creates parts with no joints by eliminating other processes such as welding and fastening. Integral fastening elements such as bosses and studs can be included. Good dimensional accuracy and detail is possible. No further machining required usually. Casting offers low cost after amortization of tooling.
In hot chamber casting a plunger traps a certain volume of molten metal and forces it into the die cavity through a gooseneck and nozzle. Metals having low melting points such as zinc, copper, magnesium and lead are cast using hot chamber die casting.In cold chamber castingmolten metal is poured into the injection cylinder. The metal is forced into the die cavity at high pressures. High melting point alloys of aluminum and copper are normally cast using cold chamber die casting.
Pressure die casting can produce a wide variety of complex 3D shapes provided that the shape can be ejected from the mold. Typically this requires walls with draft.