To solve problems of (1) difficulty in uniformly dispersing additives for a lightweight alloy employed in a conventional injection molding, (2) difficulty in smoothening after machining as a post-treatment, resulting from an nonuniform surface-hardness and tensile-strength of a molded product, because the uniform dispersion of the additives is impossible, (3) inferiority in a flowability of a molten metal resulting from the nonuniformity, and (4) necessity of a large scale apparatus as a high injection pressure and speed is necessitated because the molten metal is injected into a narrow die, especially when a container with thin wall is molded.
The molding method of the lightweight alloy comprises steps of, (1) heating and melting a base metal alloy consisting of at least one of an alloy of aluminum and magnesium, an aluminum alloy, or a magnesium alloy, as a base metal alloy, (2) stirring after adding additives to the base metal alloy, (3) cooling and solidifying the base metal alloy in which the additives are added, and (4) remelting and molding the solidified base metal alloy.
NISHII KOTA
KIMURA KOICHI
ASO NORIYASU
FUJIWARA TAKAYUKI
