B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
327/102
B23K 11/24 (2006.01) B23K 11/25 (2006.01)
Patent
CA 2024886
For improving the quality of welding operations, in a process for alternating current welding, in which during a period the actual r.m.s. welding current is measured and the phase displacement of the use of current flow during the next period of the a.c. current is regulated, theinvention provides for divergences of the actual r.m.s. welding current during all the welding periods already performed to be taken into account compared with a desired r.m.s. current during the welding period to be performed. A welding apparatus for alternating current welding using two welding electrodes. a power supply for the same and a device for regulating the r.m.s. welding current during each a.c. voltage period has a computer (7) for taking account of divergences of the actual r.m.s. welding current during preceding welding periods of a welding operation compared with a desired r.m.s. welding current flow during the further welding periods to be performed of the particular welding operation.
Boyer Jean-Noel
Pellegrini Henri
Aro S.a.
Gowling Lafleur Henderson Llp
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