New electron beam equipment and technologies for producing of advanced materials using vacuum melting and evaporation methods, developed at SPE "ELTEKHMASH" - N. I. Grechanjuk; P. P. Kucherenko; A. G. Melnik; I. N. Grechanjuk; Ju. A. Smashnjuk; V. G. Grechanjuk (Automatic Welding, 2016)