CAST ARTICLE UTILIZING MOLD
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United States of America Patent
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app pub date -
Aug 24, 2007
filing date -
Mar 5, 2003
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Abandoned
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Abstract
A cast article includes a porous layer having a three-dimensional porous structure, and is manufactured utilizing a mold manufactured by: scattering and adhering combustible powdery particles around a wax mold, which is a lost pattern, to form a layer of combustible powdery particles around the wax mold; coating a film of a ceramic precursor slurry around the wax mold; subjecting the wax mold coated with the slurry film to a heat treatment at 100 to 180.degree. C., to dewax only the wax mold without the combustible powdery particles; and burning and vanishing and firing the slurry film, to burn and vanish the powdery particles in the slurry film and form a shell. Casting the cast article by: pouring a molten metal into the cavity of the mold; cooling the molten metal; and removing the shell of the mold.
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