Pulse puddle arc welding raises weld speed, cuts defects. (Materials Progress: Welding/Joining).

Advanced Materials & Processes,  July, 2003  

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A technology in which the weld puddle is caused to pulsate as the weld metal is being deposited has reportedly been developed by Bonal Technologies Inc., Southfield, Mich. Called Pulse Puddle Arc Welding (PPAW), the technology is said to increase weld speed and to reduce typical weld defect problems such as porosity, incomplete penetration, undercutting, and spatter.

Rather than pulsating the current, PAW pulsates the base metal of the weldment as the molten weld metal is deposited. This allows for an optimized level of pulsating the liquid puddle. The technology can increase weld ...

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