PLASMA SURFACE HARDENING SPECIAL TECHNOLOGIES COMPONENTS
The paper presents the results of a study of the final plasma surface hardening of 38CrNiMo steel with currents of direct and reverse polarity. Hardening modes are selected that exclude the melting of the treated surface. Investigations of four plasma surface hardening options were carried out, including scanning processing and closed arc processing. The results of measuring the geometric characteristics and hardness of the obtained hardened layers are presented. The possibility of obtaining hardened layers with hardness up to 52 HRC is shown. It has been shown that hardened layers with a depth of up to 1.7 mm and a width of up to 24 mm can be obtained in the finish plasma treatment without significant changes in surface roughness.