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Summary form only given: In welding society, the relation between welding parameters and welding phenomena is complicated because arc welding quality depends on the bead shape, welding speed and so on. Pulsed arc welding is controlled by current waveform, and it also controls the heat input to the material in order to increase the weld of sheet material in welding society. The welding parameters have...
Experimental study of plasma formation dynamics in a vacuum arc discharge (VA) at different current values and different dimensions of CuCr50 electrode cross-sections has been carried out. With the use of high-speed multiframe photography time dependences of the current channel diameter and plasma expansion speeds have been determined. It has been demonstrated that plasma expansion speed under the...
Since gas tungsten arc (GTA) can stabilize a high-temperature arc plasma by employing shielding gas, it is used as a heat source device. It has high heating efficiency and highly controllable characteristics and requires low cost for equipment investment. Therefore, it is widely utilized, for example, for production of nanoparticles, material processing, detoxification of toxic waste, and so on. A...
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