Pouring method, device, and cast in vacuum molding process

A molding device used in a vacuum sealed process, comprising:

• upper and lower framings for receiving fills therein that act as upper and lower mold halves defining a molding cavity, each framing having an annular inner cavity in side walls thereof, the lower framing being mounted on a surface plate;
• evacuating means located outside the upper and lower framings and connected in fluid communication with the annular inner cavities for evacuating the annular inner cavities;
• a pair of annular cooling chambers formed in the annular inner cavities that surround matching planes of the upper and lower framings;
• air nozzles detachably connected to the annular cooling chambers for spraying compressed air thereinto;
• an air nozzle located under the surface plate at or near a center thereof for spraying compressed air onto an underside thereof;
• means for measuring a degree of pressure reduction for at least one of the upper and lower framings during a period between a start and an end of the pouring;
• and
• a controller for adjusting degrees of pressure reduction in the inside of the at least one framing mold half and in the molding cavity when the controller receives the detected degree of pressure reduction.