Control method for consumable electrode arc welding
A technology of arc welding and control method, which is applied in the direction of arc welding equipment, welding equipment, manufacturing tools, etc., which can solve the problems of interference, difficulty in solving welding torch and base metal, etc., and achieve the effect of suppressing the change of penetration depth
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Embodiment approach 1
[0025] figure 1 It is a block diagram of a welding power source for implementing the consumable electrode arc welding control method according to Embodiment 1 of the present invention. Hereinafter, each block will be described with reference to this figure.
[0026] The power supply main circuit PM receives a commercial power supply (not shown) such as 3-phase 200V as input, performs output control such as inverter control according to an error amplifier signal Ea described later, and outputs welding voltage Vw and welding current Iw. Although not shown in the figure, this power supply main circuit PM includes a primary rectifier for rectifying commercial power, a smoothing capacitor for smoothing rectified direct current, and an inverter circuit for converting smoothed direct current into high-frequency alternating current. , the high-frequency transformer that steps down the high-frequency AC to a voltage suitable for welding, the secondary rectifier that rectifies the high...
Embodiment approach 2
[0073] Invention of Embodiment 2 In the invention of Embodiment 1, the number of short circuits per unit time is detected, and the operation mode selection signal Ms is switched based on the detection value of the number of short circuits. Hereinafter, the invention of Embodiment 2 will be described with reference to the drawings.
[0074] Figure 6 It is a block diagram of a welding power source for implementing the consumable electrode arc welding control method according to Embodiment 2 of the present invention. This figure is similar to the above figure 1 Correspondingly, the same symbols are assigned to the same blocks, and descriptions of these blocks are omitted. The graph is in figure 1 A short-circuit times detection circuit NS is added to the figure 1 The figure obtained after replacing the operation mode selection circuit MS of 1 with the second operation mode selection circuit MS2. Hereinafter, these blocks will be described with reference to this figure.
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