| 摘要 |
PROBLEM TO BE SOLVED: To provide a die molding method capable of improving working environment in mold molding and obtaining a high strength, high quality mold in a room temperature gas hardening mold molding method. SOLUTION: In this mold molding method, a granular refractory aggregate which is coated with a binder containing a polyol compound and polyisocyanate compound, is introduced in a molding flask for molding, and then a gasified hardening accelerator is introduced into the molding flask. In this case, the hardening accelerator to be used by gasifying is a mixed solution containing a tertiary amine and alcohols and/or water.
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