Abstract
The researchers review are devoted to the anode heating mechanism in the water electrolytes and its application for the heat and thermochemical treatment of the steels and titanium allows is carry out. The heat and electrochemical peculiarities of the anode heating are considered, the technological possibilities of the operational properties improvement by the nitrohardening, carbonizing or oxidation are described. The short history of the studies and designs including industrial installations for anode hardening technologies is given.