Patent ID: 6068043
Filing Date: 2000-05-30
Classification: B22D,Y10S

Abstract:
A method for casting a shaped metallic alloy article, comprising:(a) disrupting a molten stream of metallic alloy into a plurality of molten metallic alloy droplets;(b) partially solidifying said molten metallic alloy droplets as a plurality of degenerative dendritic globules such that from about 5% to about 60% by volume of each average degenerative dendritic globule is solid and the remainder is molten;(c) collecting said partially solidified degenerative dendritic globules in a container forming a semi-solid mass;(d) moving said semi-solid mass within said container away from said molten stream of metallic alloy as said partially solidified degenerative dendritic globules are collected; and(e) forcing at least a portion of said semi-solid mass prior to solidification of all of said partially solidified degenerative dendritic globules into a die cavity to form a shaped metallic alloy article; andwherein step (c) further comprises collecting said partially solidified degenerative dendritic globules on a piston in said container and maintaining said semi-solid mass as partially solidified with a percentage solid composition of said degenerative dendritic globules between 5 percent and 60 percent, inclusive; andwherein step (d) further comprises moving said piston away from said molten stream of metallic alloy to move said semi-solid mass within said container away from said molten stream of metallic alloy as said partially solidified degenerative dendritic globules are collected.