PRECISION-CASTING CORE, PRECISION-CASTING CORE MANUFACTURING METHOD, AND PRECISION-CASTING MOLD
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United States of America Patent
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May 5, 2016
app pub date -
May 28, 2014
filing date -
May 29, 2013
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Abstract
A coating layer including solely silicon alkoxide or mixed alkoxide of silicon alkoxide and aluminum alkoxide is formed on a surface of a sintered precision-casting core body mainly including silica particles so as to seal holes formed in the surface. As a result, it is possible to prevent the breakage of the core during casting.
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