Low pressure casting refers to placing the mold above a sealed crucible, and then introducing compressed air into the crucible to create a low pressure on the surface of the molten metal, so that the molten metal rises from the crucible, the riser fills the mold and controls the solidification casting method.
Low-pressure casting is an earlier counter-gravity casting technology used in industrial production in the 1940 s. Nowadays, low-pressure castings are mainly used to produce aluminum and magnesium alloy parts, such as automobile wheels, cylinder blocks, cylinder heads, pistons, impellers, wind guides and other complex-shaped castings in the automotive industry.
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