Low Pressure Permanent Molding
Low Pressure Permanent Molding supplies liquid aluminum from a furnace, under low pressure, to a die. This allows the metal to not only fill the contours of the casting shape but to feed the shrinkage while the solidification of the casting progresses to completion. Compared to the traditional permanent mold process low-pressure permanent mold yields mechanical properties approximately 5% superior. The yield is generally greater and thinner walls can also be produced.