METHOD FOR PRODUCING hard alloys based on tungsten carbide, complex carbonitrides, include zirconium and cobalt

摘要

A process for making solid alloy based on tungsten carbide, the complex carbonitride comprising zirconium and cobalt, comprising fine grinding the mixture of the starting components, extrusion of the plasticized batch, drying and sintering in vacuo preforms at 1420 ÷ 1460 ° C, wherein the pre-synthesized complex carbonitride of zirconium-tungsten composition ZrWCNiz mixture of tungsten carbide, zirconium carbide and zirconium nitride in a nitrogen environment at a temperature of 1700 ÷ 1900 ° C and taking components from the calculation, to "x" is equal to 0.2 ÷ 0.5, and y »is equal to 0.3 ÷ 0.4, in a weight ratio of tungsten carbide and complex carbonitride of tungsten-zirconia 1: 3 ÷ 3:. 1, respectively, while to 87,5-91,0% by weight of a mixture of tungsten carbide and complex carbonitride added 9,0-12,5 wt.% of cobalt.