Journal of Siberian Federal University. Engineering & Technologies: Special Features of Welding by a Low-Ampere Arc with Tungsten Electrodes

Journal of Siberian Federal University. Engineering & Technologies / Special Features of Welding by a Low-Ampere Arc with Tungsten Electrodes

Issue: Journal of Siberian Federal University. Engineering & Technologies. 2012 5 (5)
Authors: Meyster, Robert A.; Meyster, Andrey R.
Contact information: Meyster, Robert A.: Siberian Federal University , 26 Kyrenskogo st., Krasnoyarsk, 660074 Russia , e-mail: ; Meyster, Andrey R.: Siberian Federal University , 26 Kyrenskogo st., Krasnoyarsk, 660074 Russia
Keywords: mig welding; non-consumable electrode welding; non-consumable electrode; tungsten electrode; aluminum welding; welding in shielding gases; welding arc; nitrogen; weld end connectioin; cylindrical electrode; rectangular electrode
Abstract: When the arc is powered by a single-phase rectifier with a condenser voltage multiplier using tungsten electrodes with a diameter of 1-2,5 mm, the arc ignites and burns in argon and nitrogen with a current of 4-10 A. Stable arc burning at a reverse polarity provides full penetration of aluminum sheets with a thickness of 0,18-0,5 mm without outflow of a molten pool. In welding of end connections made of low-carbon steel, stainless steel, copper, brass, aluminum with a thickness of 0,06-0,2 mm, with a gap larger than sheet thickness, in argon and nitrogen of high grade, the weld is formed by cylindrical and rectangular electrode at the current of 2,5-9 A. At these low currents Intensive wandering of the active spots are detected.
Pages: 592-600
Paper at repository of SibFU: https://elib.sfu-kras.ru/handle/2311/3207