The influence of plasma power with a liquid electrode on the microhardness of gray cast iron

Abstract

© Published under licence by IOP Publishing Ltd. The effect of a plasma jet in an installation with an electrolytic cathode on the structure and properties of gray iron has been investigated. The dependences of the sizes of the zone of plasma treatment influence, the average diameter of dendrites and microhardness on the plasma power in the range of 2 to 6 kW have been determined. It has been established that as the plasma jet power increases, the volume of the reflow zone and the size of the grains of its structure increase, while the microhardness of the treated cast iron decreases.