LOW-PRESSURE CASTING DEVICE AND LOW-PRESSURE CASTING DEVICE FOR WHEEL FOR VEHICLE

摘要

PURPOSE:To supply pressurized air to a riser space and to accelerate the run of a molten metal by providing a pressurized gas inflow path in a casting mold body and opening this inflow path in the riser space. CONSTITUTION:The pressurized air is supplied via a nozzle 9 into an air chamber 821 and eventually the riser space S and the surface of the molten metal is thereby pressurized if a selector valve is operated to communicate an air piping 91 with the pressurized air inflow path 912. The casting having a dense casting structure is obtd. in this way.