Permanent Mold What does it mean?preadmin
Permanent mold, consisting of machined metal mold cavity into blocks called permanent molds and dies designed for continuous use. Nowadays, graphite, copper and aluminum is used although molds are generally made of cast iron or steel.
Permanent mold, iron and copper alloy is produced by all metals, but usually the zinc-base, light metals such as magnesium and aluminum is used. The metal flow into the mold takes place only permanent shell mold.
Normally, the mold used mold shell according to the mold because it gives more accurate results. Only shell molding is preferred for the light alloy parts.
Low Pressure Molding - minimal pressure to fill the low pressure permanent mold (usually 5-15 inch lb / sq) is a method used in the production of castings using. This more sand and to help bridge the gap between a casting die cast.