Patent ID: 6458297
Filing Date: 2002-10-01
Classification: B01D,B22C,B22D,B29C,C01D

Abstract:
A method of making salt filler cores for producing pressure die-casts or injection molded articles, the steps comprising:(a) producing a quantity of salt grains which are essentially spherical in shape and of substantially the same particle size; (b) compacting said quantity of said salt grains into the shape of at least one salt filler core; and (c) injecting a liquid material from which said articles are to be made into a mold containing at least one said salt filler core to thereby form said article; wherein said step of producing a quantity of said salt grains includes atomizing a saline solution into a plurality of drops and causing said salt contained in said drops to solidify into said grains of essentially spherical shape and having substantially the same size.