An ac or dc power source fitted with whatever controls may be needed is connected by a work cable to the workpiece and by a hot cable to an electrode holder of some type which makes an electrical contact with the welding electrode. Basic welding circuit the basic arc welding circuit is illustrated in fig.
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In addition to melting the base metal a filler material is typically added to the.
Arc welding safety equipment. Welding is a fabrication process that joins materials usually metals or thermoplastics by using high heat to melt the parts together and allowing them to cool causing fusionwelding is distinct from lower temperature metal joining techniques such as brazing and soldering which do not melt the base metal.
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