DEVICE FOR SURFACE TREATMENT OF METAL AND METAL-CERAMIC ARTICLES Russian patent published in 2020 - IPC C21D1/09 C22F3/02 

FIELD: technological processes.

SUBSTANCE: invention relates to surface treatment of metal and metal-ceramic articles. Device includes emitter, which comprises auxiliary discharge cells with outlet contracting channels installed in said base of cathode cavity and inside it, wherein the main and auxiliary discharge cells have an electrode system comprising an igniting electrode, a cylindrical cathode and a circular magnet, device includes two independent power supply systems, made with possibility of asynchronous or synchronous operation, the first of which is connected to the main discharge cell, and the second one – to auxiliary discharge cells, and said auxiliary discharge cells are located along the perimeter of said base to provide formation of annular electron beam with larger diameter than that of main process electron beam, to heat main volume of processed article to required temperature.

EFFECT: technical result consists in provision of independent and controlled heating of surface of dimensional items to required background temperature before modification process with intense pulsed electron beam of submillisecond duration by using separate pulsed-periodic or quasi-stationary electron beam of low energies, generation efficiency of which is determined only efficiency of power supply systems of accelerating voltage and discharge generating plasma in plasma emitter.

3 cl, 3 ex, 3 dwg