v casting method, v French casting enterprises, high-Sheng Machinery

No adhesive to fill sand boxes and addenda dry quartz sand, quartz sand by microseismic enables tight, gelling. Put sealing film, removing sand inside the valve open air, so that there is a pressure difference between the inside and outside of the mold (about 300 ~ 400mmhg), the action of the pressure difference for molding and has a high hardness, wet durometer up 95, to ensure that the contour of the cavity. (5) vacuum is released within the template, and then draft. To continue evacuated until the mold casting solidification so far. Figure 2 (6) according to the rule of law at the core, close box, pouring. (7) to be solidified metal, stop pumping the mold when type internal pressure near atmospheric pressure, dry quartz sand loose, mold collapsing on its own fundamental technical equipment and facilities. Look inside the vacuum is released, and then from the module. To continue vacuuming mold until the next core, close box, casting is completed. (6) after pouring molten metal to be solidified, the mold is stopped pumping, while type internal pressure near atmospheric pressure, mold look inside the vacuum is released, and then from the module. To continue vacuuming mold until the next core, close box, casting is completed. (6) after pouring molten metal to be solidified, the mold is stopped pumping, while type internal pressure near atmospheric pressure, mold collapsing on its own. Self collapsing.