| 摘要 |
A construction method of external characteristics of an arc welding power source is provided to simplify sequential voltage and current values varied in a break-off and transition cycle. A construction method of external characteristics of an arc welding power source includes the step of setting external characteristics at Descartes Coordinates, for example load current is located at an X-axis, and load voltage is located at a Y-axis. In an initial state, a screen shows a single curve or various curves of an average load power for a static welding mode. When a drop of a melting electrode is formed in one cycle, the drop is supplied to the electrode to grow and in contact with to form a short circuit. Then, the drop is lengthened in a detail direction by electrostatic forces to be broken off. |
