THE STUDIES OF THE INFLUENCE OF AERODYNAMIC SOUND HARDENINGON THE PROPERTIES OF HARD ALLOYS

Abstract

An increase in impact viscosity and transverse modulus of rupture for a metal-cutting carbide tool operating in
intermittent cutting processes under buff loads, while maintaining the hardness obtained at manufacturing, can be
achieved by aerodynamic sound hardening. It was established experimentally that the method of ASH is able to increase
the strength properties of hard alloys: the impact viscosity increases as compared to unstrengthened samples by
(23 % for the T15K6 alloy; 21 % — for T5K10; 19 % — for VK8); the transverse modulus of rupture for carbide
plates of alloys T5K10, T15K6, VK6, VK8 increases by 19...23 % as compared to unstrengthened ones. It was confirmed
that the method of ASH enables to avoid the decrease in hardness and density, in contrast to all hardening methods dealing
with energetic thermal effects. As a result, hardening by the ASH method allows to obtain carbide inserts with new,
previously unknown physical and mechanical properties, which are measured higher than standard ones.

Fig. 3. Tablе 5. Ref.: 10 titles.