Patent ID: 6840302

Claim:
A method of injection molding a light metal alloy comprising the steps of: supplying a molten metal to a hopper while controlling the height of the molten metal in the hopper so that the surface height of the molten metal is lower than a shaft seal of an extrusion screw; supplying the molten metal to a substantially vertical chamber; cooling the molten metal under shearing by the extrusion screw into a semi-solidified slurry in the substantially vertical chamber; discharging the semi-solidified slurry from a discharge port at the lower end of the chamber; turning the semi-solidified slurry in the horizontal direction; filling an internal channel of the horizontal direction with the semi-solidified slurry; and injecting the turned semi-solidified slurry of a predetermined amount into molding plates opening or closing in the horizontal direction from the discharge end of the second internal channel of the horizontal direction.