Method for surface-treating mold

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United States of America Patent

PATENT NO 11731242
APP PUB NO 20190022824A1
SERIAL NO

16081184

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Abstract

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A method of treating a surface of a mold. A preliminary treatment of dry-ejecting an angular carbide powder against the surface of the mold so as to cause elemental carbon present within the carbide powder to be diffused into the surface of the mold. The carbide powder has particle diameters not larger than those of a 220 grit and the carbide powder being dry-ejected at an ejection pressure of 0.2 MPa or greater. An after-treatment of dry-ejecting a spherical powder against the surface of the mold to cause the spherical powder to impact the surface of the mold and form innumerable circular arc shaped fine depressions. The spherical powder has a hardness not less than the hardness of a base material of metal of the mold and particle diameters not larger than those of a 220 grit and dry-ejected at an ejection pressure of 0.2 MPa or greater.

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Patent Owner(s)

Patent OwnerAddress
FUJI KIHAN CO LTDNAGOYA-SHI AICHI 462-0063

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyasaka, Yoshio Nagoya Aichi, JP 33 167

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