Foundry mold for cast-to-size zinc-base alloy
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United States of America Patent
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Oct 27, 1987
Grant Date -
N/A
app pub date -
Nov 3, 1986
filing date -
Nov 3, 1986
priority date (Note) -
Expired
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Abstract
A foundry mold for casting to size a material-forming die of a zinc-base alloy is formed by compacting and sintering a particulate mixture composed predominantly of alumina particles and containing raw kyanite particles. During sintering, the raw kyanite particles react to expand the mold by an amount sufficient to compensate for shrinkage of the solidified alloy during cool down.
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