Vacuum modeling is a physical modeling method, vacuum technology will combine with sand casting, the cavity by a plastic film surface and the back sand mold sealed, with the vacuum pump to generate a negative pressure, causing sand mold inside and outside fastening the mold sand pressure forming, place sand core, mold, casting, wait after solidification, releasing negative or stop pumping, sand mold casting will be followed to obtain collapsing. According to the main areas of current application can be divided into vacuum sealed modeling (V method) and real vacuum casting (FV method). Its advantages are:
(1) moderate degree of vacuum tight cavity high casting quality is high.
(2) vacuum casting mold flow analysis with a computer simulation can be predicted to produce casting defects, for design modeling programs can significantly save time and increase productivity
(1) moderate degree of vacuum tight cavity high casting quality is high.
(2) vacuum casting mold flow analysis with a computer simulation can be predicted to produce casting defects, for design modeling programs can significantly save time and increase productivity