B - Operations – Transporting – 23 – K
Patent
B - Operations, Transporting
23
K
354/23, 327/67
B23K 9/10 (2006.01) G06F 15/46 (1985.01)
Patent
CA 1206616
- 14 - A b s t r a c t The invention relates to a process for maintaining weld quality during wielding operation, marking the fault spots on the workpiece and certi- fying of quality, in course of which momentary va- lues of arc current and arc voltage characterizing manual or mechanized welding process are continuous- ly measured and from the values thus obtained rela- tive short-circuit time of the arc, drop frequency and arc outputs (powers) are continuously calculated. The essence of the invention lies in that measured and calculated values are compared with em- pirically determined optimal values, thus defining absolute values and signals representing the direc- tions of deviations, as well as duration of devia- tions, thereafter - related to a predetermined span of time - averages of absolute values and signals representing the directions are defined, furtheron the quotient of the duration of deviations and pre- -determined duration is formed. Averages and quotients are recorded and simultaneously averages of the ab- solute values are related to a first and second li- mit value and in case, if they fall between the first and second limit value, a warning signal is given for the welder, whereas, if averages are surpassing the second limit value a further signal is given and si- multaneously fault spot is marked on the workpiece as long as averages are reduced below the second li- mit value.
449006
Lukacs Laszlo
Molnar Laszlo
Retfalvi Ferenc
Szappanos Adam
Toth Laszlo
Kirby Eades Gale Baker
Kohaszati Gyarepito Vallat
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