SOLUTIONS: Process

sealed molten metal chamber - limited exposure to atmosphere, less hydrogen gas pick up and oxide formation
descant regeneration dryers in the process air lead to a naturally de-gassing environment
cleaner metal - less oxide creation, higher mechanical properties. Note : aluminum is drawn from the bottom of the bath (cleanest metal) through a ceramic uptube
no exposure of molten aluminum to steel/iron components - minimize iron pick up
low pressure (3-4 psi) provides a smooth fill to reduce turbulence which causes oxides
metal flow rate is monitored and controlled at the sprue so it does not exceed max. velocity critical to oxide formation
facilitates water cooling at critical areas to ensure directional solidification back to sprue, rapid chill leads to better mechanical properties
intensified pressure in feed areas results in better DAS
automatic pressure compensation servo valve compensates for furnace level reduction each cycle
Automated process is repeatable, and provides process control