MANIPULATION DE CHALEUR ET POURSUITE DE SOUDURE DE SOUDURES ENTRELACÉES

摘要

An arc welder (10) produces a weave pattern between workpieces (W1, W2). Each weld run comprises a center portion including a joining region between the workpieces (W1, W2) and edge regions spaced apart from the joining region. The welder (10) includes a power source (16) that provides a welding waveform to a welding electrode (24) to generate an arc (18) to achieve a desired heat for welding, a welding torch (12), and an oscillator (29) for oscillating the torch (12) between the welding edge regions. A controller (34) causes the power source (16) to operate in a first mode utilizing a first waveform during welding within the joining region, and in a second mode using a second waveform, having a greater positive component than the first waveform, during welding within the edge regions. The controller (34) determines a stickout (40) value based on the first waveform but not the second waveform, and performs seam tracking based the second waveform but not the first waveform.