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Low pressure die casting is a method of production that involves molten metal being forced, under low pressure, into a die rather than relying on gravity to fill a mould as is the case with sand, investment, and gravity die casting. Modern adaptations to the pressure casting process have resulted in both low and high pressure variants that each exhibit different characteristics. In low pressure die casting, the controlled and constant pressure exerted on the molten metal as it enters the mould and solidifies compensates for shrinkage reduction in volume as the metal cools. The sealed process also reduces oxide formation, as there is less exposure of molten metal to the atmosphere and reduces porosity. As a result, low pressure die castings deliver exceptional density, strength, and dimensional accuracy, and better consistency throughout the casting. Typical applications for low pressure die casting includes: Aluminium automotive parts including wheels, cylinder heads, blocks, manifolds and housings, critical aerospace castings, electric motor housings, impellers, winding wheels and other complex castings.
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