Low Pressure Die Casting:This is a repetitive process where identical parts are cast by injecting molten under low pressure into metal dies. This process requires complex machinery similar to high pressure die casting.
Advantages
Fair production rates up to 30/ Hr
Thin wall thickness possible (2-3mm)
Better linear tolerances than gravity casting surface finish improved on gravity casting, but not up to pressure die casting standards
High Yields possible as runners and risers not required
Reduced finishing is required
Pore free castings are obtainable
Sand cores may still be used to allow complex castings die costs far lower than for pressure die casting
Castings are heat treatable
Limitations
Size of casting limited by machine size
Production rates not up to pressure die casting
Feeding thin sections through thick sections is not recommended casting weight range 5 Kg - 25 Kg
Approximate economical quantity range >1000