| 摘要 |
PURPOSE:To stabilize profiling control of a weld line in the stage of automatic profile welding of the weld line by an AC arc in which a consumable electrode is used and a torch is oscillated by using filters in combination with respective detectors for control. CONSTITUTION:A wire 2 which is a consumable electrode is let off from a chip 3 and while the wire is oscillated laterally in the groove between materials 6 and 6 to be welded, automatic profile welding along the weld line is accomplished with a molten metal 5 by an arc 4. The welding current, the feed speed of the wire, the voltage between the chip 3 and the materials 6 and the oscillating position of the chip 3 are detected with a current detector 16, a measuring device 18 for the number of revolution of a roller 8 for feeding the wire, a voltage detector 17 and a position detector 19 are inputted to a digital calculator 35, by which calculations are made and the arc 3 is controlled to profile automatically the weld line. Since noises enter the output signals from the above- mentioned detectors, filters are inserted therein to remove the noise, thereby improving the stability of the control. |
