Low Pressure Die Casting
This is a process injecting air into a product through hot water supply stalk pushing up in opposite direction to force small pressure (air or inert gas)to the molten metal area within a closed container.
If the weight of the product increases and the shape is complicated, the method for increase in mold temperature should be adopted for directional solidification and the easy streaming of molten metal. If the temperature of mold is increased, delay to termination time causes a decrease in productivity and organization of product became rough and mechanical property can be lowered.
To get sound product, proper gate and its positioning, pressurized condition and location of channel, setting the condition is very important.
- Cooling channel and mold structure
- Filling pattern considering volume reversal pressure within stalk
- Filling pattern using two stalks