Method of making sintered hard metals

摘要

541,975. Alloys. GES. ZUR FORDERUNG DER FORSCHUNG AUF DEM GEBIETE DER TECHNISCHEN PHYSIK AN DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE. July 1, 1940, No. 11126. Convention date, July 1, 1939. [Class 82 (i)] A method of making hard alloys of the type comprising carbides and binding metals, particularly cobalt, comprises heating the mixture in hydrogen to a temperature below the melting point of. the binding metal, then rapidly heating for a short time in vacuo at about the melting point of the binding metal, followed by rapid cooling.