Pcc Airfoils, Inc.

Donald M Kupp

Ricky A Alexander

Karl-Heinz Schofalvi

Karl F Hens

An improved binder is mixed with powder to form feedstock for molding. The binder includes a first component which is soluble in water and a second component which is insoluble in water. The two binder components are miscible with each other in a liquid state. The two binder components form a uniform heterogeneous mixture when mixed in a liquid state. The binder is mixed with a suitable powder to form the feedstock. The feedstock is molded to form a compact. Polymer units of the binder are cross linked after the compact has been formed. The cross linking of the polymer units of a component of the binder is accomplished by exposing the compact to ultraviolet radiation or by the use of a catalyst. The compact is partially debound by exposing the compact to water, that is, to a water based solvent. Thereafter, the compact is further debound to remove the component which is insoluble in water. The powder is then sintered to form an article.

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St. College, PA, United States of America

Donald M Kupp