Method of controlling multi-layer welding

Details Method of controlling multi-layer welding Method of controlling multi-layer welding

B - Operations, Transporting

23

K

327/60

B23K 9/02 (2006.01) B23K 9/073 (2006.01) B23K 9/10 (2006.01)

Patent

CA 1223046

Abstract In the multi-layer welding of a joint of two pieces of metal to be welded by arc welding, the proper number of passes and the desired tracing positions of a welding torch for each layer are automatically established during the welding of the preceding layer. The welding torch is subjected to a Y-axis control so as to maintain constant the arc voltage or current during the welding and simultaneously the torch is caused to weave in the direction of an X-axis within the groove. The tracing of the groove by the torch is accomplished by controlling the weaving turning positions of the torch in accordance with the X-axis and Y-axis direction displacement data of the torch and the torch displacements in the X-axis direction are compared with a predetermined value thereby determining the proper number of passes to be made in the welding of the next layer.

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