Hydraulic composition for additive manufacturing device, and process for producing casting mold
AssigneeTaiheiyo Cement Corporation
InventorsYoshifumi Ohgi, Yoji Ogawa, Makoto Tanimura, Atsuya Toba, Hayato Suzuki
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Abstract
The present invention has solved the problems of conventional molding materials, and provides a hydraulic composition for additive manufacturing devices having high strength development, particularly high early strength development, and less generation of gas defect and graphite spheroidization defect. Specifically, the hydraulic composition for additive manufacturing devices of the present invention at least contains calcium aluminate. It is preferable that the hydraulic composition contain 0.5-10 parts by mass of gypsum with respect to 100 parts by mass of the calcium aluminate.
Claims18
A hydraulic composition for an additive manufacturing device, comprising:
- a binder having 90 to 100% by mass of calcium aluminate and 0 to 10% by mass of a cement, and
- 0.5 to 10 parts by mass of anhydrous gypsum based on 100 parts by mass of the calcium aluminate,
- wherein the hydraulic composition is capable of being molded by the additive manufacturing device into a plurality of shapes arranged in horizontal planes with reduced gas generation defect and with reduced graphite spheroidization defect.
Dependencies are inferred from the claim text.