PRECISION CASTING MOLD AND METHOD OF PRODUCING THE SAME
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United States of America Patent
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Issued Date -
Oct 1, 2015
app pub date -
Oct 7, 2013
filing date -
Oct 9, 2012
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Abstract
Provided is a precision casting mold to be used to produce a cast product. The precision casting mold includes a core having a shape corresponding to an internal hollow portion of the cast product and an outer mold corresponding to a shape of an outer peripheral surface of the cast product, and the outer mold is made up of: a prime layer which is formed on an inner peripheral surface and is formed from a slurry film obtained by drying slurry for the precision casting mold including mono-dispersed ultrafine alumina particles having a particle size of 1.0 μm or smaller; and a multi-layered backup layer which is formed on the outside of the prime layer by repeatedly forming a first backup layer obtained by forming and drying a slurry layer formed from the slurry for the precision casting mold and a stucco layer in which silicon carbide (SiC) as a stucco material is adhered to the slurry layer.
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