Casting mold is refers to to obtained parts of structure shape, advance with other easy forming of material made parts of structure shape, then again in sand type in the into mold, so sand type in the on formed has a and parts structure size as of empty cavity, again in the empty cavity in the pouring liquidity liquid, the liquid cooling solidified zhihou on can formed and mold shape structure completely as of parts has.

Casting molds are driven by hydraulic cylinder shooting high-speed liquid metal into the mold cavity pressure in, because it is using hydraulic, pressure is high, it is commonly known as die casting process.