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

Manufacturing appearance with the suction box and the suction hole. (2) will have a plastic baked plastic film to cover the appearance of a vacuum, the film attached to the surface of the molded pattern (called molding), spray drying paint. (3) The exhaust pipe with filter sand box, placed on the template has been well covered plastic film. (4) to the sand box filled with no binders and addenda of dry sand. Tap sand box, Calibrating, put a sealing membrane, opening the exhaust valve, removing sand in the air, so there is no pressure difference between the inside and outside of the mold, due to the pressure difference between the role of the mold has a high hardness, sand durometer can be achieved with LFC sealed plastic film role with 85-95 sand top surface coating on top of the sand and then covered with a layer of plastic film which does not require heating to soften, only acts as a seal, same. Figure 6 is the type by hand the cup and sprue gate is connected to the lower molding sand just before the film will be gelling. Sand the top surface of the film at the top of the sand and then covered with a layer of plastic film which does not require heating to soften, only acts as a seal, and EPC sealed plastic film used in the same role. Figure 6 is the type by hand the cup and sprue gate is connected to the lower molding sand just before the film will be gelling.