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DC Welding Rectifier or TIG Welding VIRDI series of welding rectifiers are forced air-cooled, silicon type and are designed to provide a DC Welding current where 3 Phase, 50 Hz AC mains power is available at voltage ranging from 380 to 440. Arc welding is one of several fusion processes for joining metals. By applying intense heat, metal at the joint between two parts is melted and caused to intermix - directly, or more commonly, with an intermediate molten filler metal. Upon cooling and solidification, a metallurgical bond is created. Since the joining is an intermixture of metals, the final weldment potentially has the same strength properties as the metal of the parts. This is in sharp contrast to non-fusion processes of joining (i.e. soldering, brazing etc.) in which the mechanical and physical properties of the base materials cannot be duplicated at the joint.
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