Process for die-casting light-weight metals
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United States of America Patent
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Oct 30, 2001
Grant Date -
N/A
app pub date -
Feb 10, 2000
filing date -
Mar 5, 1999
priority date (Note) -
Expired
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Abstract
A process for die-casting aluminum and aluminum alloys is such that the molten metal is introduced into a filling chamber and injected from the filling chamber into a mold cavity by a piston. The mold cavity is evacuated in advance, after which it is flooded with oxygen. After flooding with oxygen and before injecting the molten metal into it, the mold cavity is again evacuated. Finally, the molten metal is injected into the hollow mold cavity. The process enables die-cast parts to be produced with low tendency to forming pores and blisters.
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