RESEARCH AND DEVELOPMENTS OF THE E.O. PATON ELECTRIC WELDING INSTITUTE FOR NOWADAYS POWER ENGINEERING

摘要

Some developments of the E.O. Paton Electric Welding Institute for power engineering have been presented, in particular, technologies for welding of large-size turbine rotors, electron beam welding of thick billets of high-strength steels, technologies of submerged-arc welding and flash-butt welding with a pulsating flashing of pipes for main large-diameter gas pipelines, technology and equipment for manufacture of energy-saving heat-exchanging devices. Outlined are the developments, directed to increase in the corrosion resistance of fuel elements and safe service of NPP due to application of high-temperature wear-resistant mechanized surfacing of pipeline stop valves with corrosion-resistant alloys. Practical recommendations for repair of main pipelines without interruption of their operation are given. The investigations were carried out showing the possibility of application of acoustic emission for monitoring welded structures, operating at high temperatures. Method for prevention of catastrophic leakage of oil from damaged pipes of wells of oil-production platforms has been developed.