Method of manufacturing expendable salt core for casting
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United States of America Patent
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Nov 5, 2013
Grant Date -
Mar 17, 2011
app pub date -
May 11, 2009
filing date -
May 9, 2008
priority date (Note) -
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Abstract
A melt is made by heating a salt mixture containing a salt of sodium. The melt is set at a temperature higher than the liquidus temperature of the salt mixture, and poured into a mold for expendable core molding. The temperature when the melt is completely poured into the mold is set within a range not exceeding the liquidus temperature of the salt mixture by 30° C. An expendable salt core for casting is molded by solidifying the melt inside the mold. This makes it possible to more stably obtain the strength of a water-soluble expendable salt core for casting made of a salt cast product obtained by melting and molding salts of sodium and the like.
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