INVESTIGATION OF THE HARDNESS OF 65G STEEL AFTER ELECTROFRICTION TREATMENT

Abstract

The prerequisite for the research of the electrofriction technology of hardening of structural 65G steel is the development of affordable, cost-effective and efficient technology to increase the operating characteristics of tillage tools, which helps to reduce costs when performing agricultural works. Electrofriction technology is based on joint melting of the surfaces of the cast iron electrode and the surface of the machined material, by introducing the energy of low-voltage electric arcs and cooling with water. Measurements of the microhardness of 65G steel showed that after electrofriction treatment a layer with the hardness up to 803 HV is formed, which is 3-4 times higher than the microhardness of the base. The distribution of microhardness along the surface depends on the location of the hardened zones and the increased values of microhardness were observed at depth to 1.8 mm. The obtained data allow us to conclude that electrofriction treatment is an effective way of hardening of 65G steel.