Manipulating the SAW Voltage and Current Waveforms to Control Welding Productivity & Quality

Through this investigation, PCL is pleased to share how waveform manipulation can be used with alternating current submerged arc welding (AC-SAW) to affect welding productivity (deposition rates) and bead profile depth.  Heat Input (energy per linear length of weld) is commonly used as a quality control tool for welding, but the traditional heat input equation is not suitable for use with variable waveform welding with an alternating current.  Equations for “polarity specific heat input” are proposed and evaluated.

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