Metal forming method involves supplying hot molted metal to lower die space, and rising piston valve to provide compact pressure and oscillation to molten metal

摘要

Metal molding method involves supplying hot molten metal (2) to lower die (1) space. Continuous hot metal supply gradually descends a piston valve (52) to a fixed position in the cylinder space. The die space (11) is blocked after the stoppage of hot-liquid. The piston valve is rised to provide compacting pressure to molten metal so as to oscillate molten metal.