Slip casting mold
AssigneeHitachi, Ltd.
InventorsTatsuo Natori, Hideo Nakae, Akihide Watanabe, Takashi Shimaguchi
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Abstract
A slip casting mold consisting essentially of a gypsum mold, which contains a water-insoluble organic material, more particularly, a water-insoluble vegetable material such as cellulose, or which further contains glue in addition to the water-insoluble organic material. Since the strength of the casting mold is reduced markedly by heating, a cast article requiring a core (or master mold) having complex shape can be obtained extremely easily.
Claims4
A slip casting mold consisting essentially of a gypsum mold, wherein said gypsum mold contains 2 to 20 parts by weight of a water-insoluble and water-absorbing vegetable cellulose and 0.05 to 2.00 parts by weight of impure gelatin, per 100 parts by weight of gypsum, whereby addition of the impure gelatin to the mold containing a water-insoluble and water-absorbing vegetable cellulose raises the initial strength of the mold while improving the collapsing property of the mold after heating at a temperature of at least 400.degree. C.
Dependencies are inferred from the claim text.