Mold surface treatment process and mold

Details Mold surface treatment process and mold Mold surface treatment process and mold

1993-10-22

1994-12-13

Bradley, P. Austin

Metal founding

Means to shape metallic material

United particle type shaping surface

164529, 164138, 164 14, B22C 300

Patent

active

053721799

ABSTRACT:
A mold comprising a cavity for defining the shape of a casting and a mold body for forming said cavity, comprising: a mold body formed of an ordinary temperature setting resin or thermosetting resin and casting sand, said mold body having a surface layer portion on the surfaces thereof including depressions, said depressions in the surface layer portion being filled up with at least one porous powdered material selected from the group consisting of hydrous magnesium silicate clay mineral, activated carbon and activated alumina, thereby providing the mold body with smooth surfaces whereby said mold generates less amount of material such as gums which cause defective castings during casting since molten metal is restrained from intruding into the walls of said mold.

REFERENCES:
patent: 3520711 (1970-07-01), Bish et al.
patent: 3590903 (1971-07-01), Taylor
patent: 4934440 (1990-06-01), Sakakibara

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