Casting mold surface treatment method and casting mold using said method
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United States of America Patent
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Sep 4, 2012
Grant Date -
Jun 9, 2011
app pub date -
Jul 30, 2009
filing date -
Jul 31, 2008
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Abstract
A surface treatment method includes covering a surface of a casting mold with a carbon film containing at least one type of nanocarbon selected from the group of carbon nanocoils, carbon nanotubes and carbon nanofilaments, and further applying fullerenes to that surface. With this surface treatment method being performed on a surface (a cavity surface, etc. of a casting mold) making contact with a molten casting material such as aluminum, etc., sticking of the molten casting material to the mold is inhibited, release resistance of the product is reduced, and release effectiveness is improved. The release effectiveness lasts longer than in the case of a conventional carbon film.
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