MOLDING METHOD BY SLURRY CASTING

• Main Authors: KIKUCHI KAZUMI, KATAYAMA SHOJI, OSADA HARUHIRO
• Format: Patent
• Language: English
• Published: 19.02.1991
• Subjects: PERFORMING OPERATIONS; SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER; TRANSPORTING; WORKING CEMENT, CLAY, OR STONE

PURPOSE:To cast slurry securely into thick wall sections and complicated shape sections of a casting space by applying wax to the wall surface, casting slurry of an non-oxide material ceramic into the casting space, heating a gypsum mold to melt the wax, absorbing the water content in the slurry by the gypsum mold and forming the wall. CONSTITUTION:A casting space 2 of desired shape is provided in a gypsum mold 1, and wax 4 is applied to a wall surface 2a of a casting space 2 before casting slurry 3. The thickness of the wax 4 applied to the wall surface 2a should preferably be around 200 - 400 mum. Slurry 3 is cast into the casting space 2 of the gypsum mold 1, and the gypsum mold 1 is heated to the melting point temperature or over of the wax 4. The applied wax 4 is melted and removed by said heat and slurry 3 is brought into direct contect with the gypsum mold 1, and the gypsum mold 1 absorbs the water content in slurry 3. When the gypsum mold 1 is dried in the hot air after the film of the wax 4 is melted and removed, draying should desirably be carried out in the hot air of 50 deg.C or over from the viewpoint of preventing the generation of cracks or the like of the gypsum mold 1.