Plasma welding of aluminium alloys

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“…Current approaches to simulation of physical processes, taking place in arc discharge plasma during PTIGW, described in works [32][33][34][35][36], provides for application of finite element method 3. Thermal cycles measured in welding with pulsed (1-3) and stationary (4-6) arc for points at 4, 6 and 8 mm distance from weld axis [17] (FEM).…”

“…Thermal cycles measured in welding with pulsed (1-3) and stationary (4-6) arc for points at 4, 6 and 8 mm distance from weld axis [17] (FEM). Thus, results, received in [36], are based on application of infra-red chamber and numerical FEM-simulation using ComsolScript complex. At that, calculation of temperature distribution in cathode and anode area and in plasma arc is carried out using a system of main classic Maxwell's equations.…”

“…The main thesis of results presented in [36] is a statement of authors that no change of shape takes place in cross-section of the weld pool in pulse arc welding even at significant difference in base and pulse values of current, that allows for regulating these parameters in a wide range during sheet metal welding. At the same time, this work assumed the following simplifications during simulation, namely thermodynamic equilibrium takes place in arc plasma, and effect of metal vapors is not considered.…”

Hybrid technologies of welding aluminium alloys based on consumable electrode arc and constricted arc

“…Research in the same direction is performed also at SLV Muenchen (Germany). Similar research is performed at Perm State University (Russia) [18,19]. In Ukraine plasma-MIG welding was studied at Priazovsky Technical University [20].…”

Main tendencies in development of plasma-arc welding of aluminium alloys

“…Investigations in this direction are also conducted at SLV Muenchen (Germany). Similar research is performed at Perm State University (Russia) [36,37]. In Ukraine consumable-electrode PAW was studied at Priazovsky Technical University [38].…”