Short circuit determination method for electrode fused arc welding
A technology of arc welding and melting electrodes, which is applied in the direction of arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of small judgment margin and misjudgment, and achieve the goal of preventing misjudgment, stabilizing welding state, and high-quality welding Effect
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[0081] Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0082] figure 1 This is a waveform diagram showing the welding voltage Vw in the short-circuit judgment method of the fusion electrode arc welding according to the embodiment of the present invention. In this figure, the solid line represents the welding voltage Vw, and the broken line represents the short-circuit reference value Vt. The figure and the above Figure 5 Correspondingly, the resistance value (Rc+Rx+Rp) is large. In the figure, the short-circuit period Ts from time t1 to t2 can accurately determine the short-circuit state by the conventional short-circuit judgment method, so the operation in this period is the same as Figure 5 the same. Hereinafter, referring to the figure, and after time t2 Figure 5 The different actions are explained.
[0083] The short-circuit reference value Vt, as in the prior art, is set by the above-mentioned formula (3). That is, th...
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