Scan welding method and apparatus

Details Scan welding method and apparatus Scan welding method and apparatus

1994-07-19

1996-09-03

Shaw, Clifford C.

Electric heating

Metal heating

By arc

21912114, 21912164, 219137R, B23K 912

Patent

active

055525750

ABSTRACT:
A single weld head, torch, is time-shared to implement any specified distributed heat input by scanning along a weld centerline and a region surrounding the centerline while adjusting the torch intensity accordingly on its path. The scan welding torch reciprocates rapidly on dynamically scheduled trajectories while power to the torch is modulated in real-time to provide a regulated heat input distribution in the weld region and on the weld centerline. The method generates a smooth and uniform temperature field, and deposits the full length of the weld bead simultaneously at a controlled solidification rate. As a result, grain interlacing on the bead interface in conjunction with a regulated material microstructure yield improved tensile joint strength.

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