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electric arc |
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electric arcA continuous electric discharge of high current between two electrodes, giving out a brilliant light and heat. The phenomenon is exploited in the carbon-arc lamp, once widely used in film projectors. In the electric-arc furnace an arc struck between very large carbon electrodes and the metal charge provides the heating. In arc welding an electric arc provides the heat to fuse the metal. The discharges in low-pressure gases, as in neon and sodium lights, can also be broadly considered as electric arcs. |
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| Each of the six ladles of steel was melted in a single, 95-ton electric arc furnace and then subsequently treated and kept hot in rotation in either the vacuum arc degassing unit or the similar vacuum oxygen decarburization unit," Marston said. Unlike electric arc furnaces, which can melt up to 100 percent ferrous scrap, melts taking place in BOFs can usually contain no more than about 25 percent scrap. MGD Termit can be used for electric arc welding and metal cutting with direct current, as a source of power supply for electric power tools, instruments and equipment, illumination and accumulator battery charging. |
electric arc
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