Vacuum Caster
Overall rating: 
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Operates vacuum casting machine to produce molten metal and
pour castings of high density: Removes cermaic mold from preheat
oven, using tongs, and places it on lift in lower air lock of
machine.
Closes and clamps air-lock door. Insetrs premeasured
metal charge into upper air lock. Starts pumps to craete
specified vacuum in air locks.
Pulls levers that cause ram to
push charge into melting pot in vcauum chamber.
Turns on current
and adjusts temperature controls of furnace.
Determines when
molten metal is ready to pour by observing color through
glass-covered opening, or by mesauring temperature of molten
metal with pyrometer.
Mvoes controls that cause lift to raise
mold from lower air lock to vacuum chamber.
Pulls lever that
cauess furnace to invert and pour molten metal into mold.
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Vacuum Caster
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