Pulse arc welding control method and pulse arc welding power supply
The pulse arc welding control method addresses transient response limitations by switching to pulse period modulation control when peak or base currents reach limits, enhancing stability and transient response in welding.
JP2026105559APending Publication Date: 2026-06-26DAIHEN CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- DAIHEN CORP
- Filing Date
- 2024-12-16
- Publication Date
- 2026-06-26
AI Technical Summary
Technical Problem
Current modulation control in pulse arc welding limits the range of change in peak current, leading to poor transient response and instability in welding conditions due to high or low peak currents, which affects bead appearance and droplet transfer stability.
Method used
A pulse arc welding control method that switches from current modulation control to pulse period modulation control when peak or base currents reach their limits, allowing wider variation in pulse period to improve transient response and stability.
Benefits of technology
Enhances transient response and stability by allowing wider variation in pulse period, reducing arc deflection and interference, and improving bead appearance and droplet transfer during welding.
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Smart Images
Figure 2026105559000001_ABST
Abstract
In a pulsed arc welding method that controls output by current modulation control that changes the peak current, the transient response until the arc length converges to an appropriate value is improved. [Solution] In a pulse arc welding control method in which welding is performed by feeding a welding wire, repeatedly applying a peak current Ip during the peak period Tp and a base current Ib during the base period Tb as one pulse period Tf, and controlling the output by current modulation control that changes at least the peak current Ip, when the value of the peak current Ip becomes equal to the upper limit or lower limit of the peak current due to the current modulation control, the output control is switched to pulse period modulation control that changes the pulse period Tf.
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