GRANULAR MATERIAL, DEVICE FOR PRODUCING THREE-DIMENSIONAL-LAMINATE MOULDING MOULD, AND METHOD FOR PRODUCING THREE-DIMENSIONAL-LAMINATE MOULDING MOULD

• Main Authors: NAGAI, Yasuhiro, IMAMURA, Satoshi, OKANE, Toshimitsu, HATORI, Yuuki, OOBA, Yoshikazu
• Format: Patent
• Language: English; French; German
• Published: 14.12.2016
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; CASTING; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; FOUNDRY MOULDING; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; PERFORMING OPERATIONS; POWDER METALLURGY; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; TRANSPORTING

In order to generate no harmful gas during pouring and reduce a gas defect as one cast metal defect in the manufacture of a three-dimensional lamination-shaped mold, this invention provides a granular material for use in shaping a three-dimensional lamination mold, the granular material being coated with water glass which is activated and cured by a water-soluble ester. The residual water content in the granular material is 1% or less. The water glass is one of a sodium silicate solution, a potassium silicate solution, as alkali metal silicate solutions and a mixture thereof.