TH102014A - Gas-covered arc welding control devices that use exhaust electrodes and welding control methods. - Google Patents

Abstract

DC60 (26/05/51) in gas-shielded arc welding with all-round electrolytic gas. The second differential By the time of the welding voltage or arc resistance is calculated. Fall off Small drop or pre-timer ejection will be detected based on the second difference value after the micro dropping or the previous timer loosening is detected. Current used The weld is immediately switched to a predetermined current lower than the current at the time being detected by this control. Even if the welding conditions are changed Or the length that can be extended The wire will be changed during welding. The detachment of small droplets can also be accurately detected in exhaust gas shielded arc welding. The second differential According to the time of the welding voltage or the arc resistance is calculated. Fall off Small or the previous timing, the fallout is detected based on the second difference value after the small drop or the previous timer the fall off is detected. Current used The weld is switched as soon as a predetermined current value is lower than the current while being detected by this control. Even if the welding conditions are changed Or the length that can be extended The wire will be changed during welding. The detachment of small droplets can also be accurately detected.

Claims (5)

1.Welding regulator for controlling the welding current in gas-covered arc welding. The type that uses a exhausted electrode Where the welding control device will have the following components Calculation part for calculating the second differential time d2V / dt2 of the voltage in During welding Or second differential d2R / dt2 time sensing element for detecting small drop-off or timing prior to dislocation if the value calculated by the computation exceeds a predetermined starting shift level. And for export Signs detecting small droplets Waveform generator for controlling the welding power waveform. After falling out of the droplets Small size, depending on the micro dropping detecting signal and the output control for the output of the welding current according to the output waveform control signal From the waveform generator Where the waveform regulators will output the waveform control signal to the output control in the Responds to the entry of micro-drop detecting signals To keep the welding current low Than the current value while being detected for a preset period 2. Welding control equipment in accordance with claim 1, where the welding current and the Welding will have a pulse wave form. And small droplets are removed by electromagnetic clamping force by pulses. 3.Weld control method for the welding being performed using the covered arc welding method. A gas that uses a exhausted electrode. The welding control method consists of the following steps. Second calculation of the d2V / dt2 time difference of the welding voltage when performing Gas covered arc welding Or the second differential d2R / dt2 time difference of the arc resistance in the weld detection of micro-drop dropping, or the timing prior to the fall off, if the calculated value exceeds the shift start level at Presetting and switching the welding current to a current lower than the current at the time of detection. After detecting micro-drop or timing before preceding falling out 4. Welding control method according to claim 3, where the welding current and the working voltage Welding will have a pulse wave form. And small droplets are removed by electromagnetic clamping force by pulses. 5. Welding control method according to claim 3, where C02 gas will be used as a shield gas.