What are the cause and solution for arc rectification?
• Arc rectification occurs when the surface oxide of a nonferrous metal acts as a barrier, making it more difficult for electrons to flow from the workpiece to the tungsten than from the tungsten to the workpiece. • Excessive arc noise, unstable weld pools, or a weld pool that appears to dry up are all signs of arc rectification. • You can either increase your travel speed or decrease the amperage for the application. Another option is to adjust the balance control on your power source toward electrode negative, which provides more penetration. • As a last resort, switch to an inverter power source that offers advanced square wave technology. To read the original article please click: http://www.thefabricator.com/ArcWelding/ArcWelding_Article.cfm?
Arc rectification occurs when the surface oxide of a nonferrous metal acts as a barrier, making it more difficult for electrons to flow from the workpiece to the tungsten than from the tungsten to the workpiece. Excessive arc noise, unstable weld pools, or a weld pool that appears to dry up are all signs of arc rectification.
