OPTIMIZATION OF THE DEGREE OF FILLING THE SLIP MADE OF WAX AND PARAFFIN WITH CEMENTED CARBIDE MIXTURE FOR INJECTION INTO ELASTIC SHELLS

Abstract

The paper examines the influence of the degree of powder filling of the cemented carbide mixture WC–8 wt%. Со waxy slip on its microhardness and density, as criteria for the ability to inject at a pressure of 0.5 bar and a temperature of 90°C into elastic shells made on the basis of 3D printed models. Experimentally, it was established that the optimal content of the degree of filling of the slip needed for obtaining strong samples by injection is 55–57% by volume. The injected samples were annealed in hydrogen and sintered according to the usual technology of hard alloy production.