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V production line
Vacuum sealed molding process (V model) is the nineteen seventies Japan invented and developed a special casting method.Use a single dry sand (not water, binder and additive) sand, forming with plastic film after heating is provided with a vent hole and exhausting device appearance, sealing the flask, and rely on the vacuum pump in the air, caused by the pressure difference inside and outside of dry sand mold is compact, a physical modeling method the cavity to form the required.
The main procedures of V method modeling for coating, coating, sand filling compactness, membrane, these processes must be done in a vacuum support.The basic equipment: with air pumping tube sand box template, vacuum system, heating, plastic film forming and cutting, vibration table and sand treatment equipment.