Self-curing and water-soluble mold
AssigneeNational Research Institute for Metals
InventorsToshisada Makiguchi, Akira Muramatsu, Hyojiro Kurabe
Life of this patent
Estimating the term…
Abstract
A process for producing a self-curable and water-soluble mold, which comprises admixing a suitable amount of water with a mixture consisting of (A) 100 parts by weight of refractory sand particles composed of alumina, (B) 1 to 5 parts by weight of at least one alkali metal phosphate selected from the group consisting of potassium phosphate and sodium phosphate, and (C) 0.2 to 3 parts by weight of an aluminum powder; shaping the resulting mixture into a mold of the desired form; and then allowing the mold to cure spontaneously.
Claims4
A process for producing a self-curable and water-soluble mold, which comprises admixing a suitable amount of water with a mixture consisting of (A) 100 parts by weight of refractory sand particles composed of alumina, (B) 1 to 5 parts by weight of at least one alkali metal phosphate selected from the group consisting of potassium phosphate and sodium phosphate, and (C) 0.2 to 3 parts by weight of an aluminum powder;
- shaping the resulting mixture into a mold of the desired form;
- and then allowing the mold to cure spontaneously.
Dependencies are inferred from the claim text.