Process for producing a thermally loaded casting
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United States of America Patent
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-
Jul 2, 2002
Grant Date -
Nov 22, 2001
app pub date -
Apr 18, 2001
filing date -
May 17, 2000
priority date (Note) -
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Abstract
A thermally highly loaded casting is produced. The casting mold is produced from a slurry using a wax model and a polymer foam which is fixed to the wax model or has been introduced into a cavity. In this way, during the casting process the liquid superalloy also penetrates into the open-cell structure of the casting mold, so that an integral cooling structure is formed during the solidification of the casting. A single-crystal or directionally solidified casting is advantageously produced. It is also conceivable to vary the cell size of the polymer foam, to produce a cooling structure and a base material separately, and to coat the cooling structure with a ceramic protective layer (thermal barrier coating).
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