In contrast to pulsating the "current", PPAW 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, perfect for the weldment.
The results are amazing: PPAW can increase weld speed upto 25%, provide a finer grain structure with a more homogeneous mix, creating fewer columnar structures resulting in reduced weld distortion and weld cracking.
PPAW is a simple procedure and can be adapted to most all arc welding situations. The pulsator is attached to the weld table or directly to the work piece. The sensor, to determine the pulse strength, is also attached.
The welder the adjusts the pulse rate which varies from job to job because of variations in weight and rigidity. - After the adjustments:
PPAW used in a weld
table application
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