METHOD FOR PRODUCING HARD ALLOY ON THE BASE OF ORDINARY AND COMBINED MONOCARBIDES OF METALS FROM VIA GROUP HAVING BINDER ON THE BASE OF METAL FROM FERROUS GROUP Russian patent published in 1994 - IPC

FIELD: production of hard alloys. SUBSTANCE: components are mixed by precipitation from solution or by crushing in ball mill within 2-24 h. Prepared mixture is reduced with the help of hydrogen at 820-1300 C, the process is carried out in one or two steps. Thus prepared pseudoalloy is mixed with carbon, the process takes place by crushing within 2-48 h in ball mill. Then plasticizer is added into this mixture and its compressing is carried out. Articles are calcined in hydrogen medium or in vacuum at 1620-820 K. EFFECT: simplifies the method, decreases duration of crushing. 3 cl, 1 tbl