| 摘要 |
PURPOSE:To produce a ceramic molded body suitable for use in the production of a core for precision casting, etc. CONSTITUTION:Powdery ceramic stock is blended with resol and alcohol having a lower vaporization temp. than the resol and they are kneaded to prepare a slurry. An acid catalyst is added to the slurry and this slurry is molded by pouring it into a mold and then hardened. The resultant molded body is taken out of the mold, dried and burnt. Molding time can be shortened in spite of molding by pouring and a large-sized or thick product is easily molded without requiring a gypsum mold. |
