Process for producing vitreously bonded microabrasive tool, slurry for making the same. process for producing green cast article and green cast article for making microabrasive tool

摘要

In the present invention, there is disclosed a method for making a microabrasive tool, the method comprising the steps of: a) casting a slurry comprising a liquid, abrasive grains, a vitreous bond material, a polymer and at least one cross-linking agent into a mold to form a structure of a green cast article; b) ionically cross-linking the polysaccharide within the mold, wherein the ionically cross-linked polysaccharide fixes the structure of the green cast article; and c) firing the green cast article to yield the microabrasive tool. The abrasive grains have a diameter in a range of between about one micron and about thirty microns. The amount of polymer is about 0.2 to about 1.0 percent by weight, of the combined liquid and polysaccharide. The slurry for making a vitreously bonded microabrasive tool comprises: a) a liquid, b) abrasive grains having a diameter in a range of between about one micron and about thirty microns, c) a bonding material suitable for being fired to a vitrified matrix, d) ionically cross-linked polymer being present in the slurry in an amount of about 0.2 to about 1.0 percent by weight, of the combined liquid and polymer, and e) at least one ionically cross-linking agent. Process for producing a green cast article for making a vitreously bonded microabrasive tool comprises the following steps of: a) casting a slurry comprising a liquid, abrasive grains, having a diameter in a range of between about one micron and about thirty microns, a vitreous bond material suitable for being fired to a vitrified matrix, an ionically cross-linked polymer being present in the slurry in an amount of about 0.2 to about 1.0 percent by weight, of the combined liquid and polymer, and at least one ionically cross-linking agent, into a mold to form a structure of a green cast article; b) a polymer and at least one cross-linking agent into a mold to form a structure of a green cast article; ionically cross-linking the polysaccharide within the mold, wherein the ionically cross-linked polymer fixes the structure of the green cast article to yield the green cast article.