| 主权项 |
1. A method of controlling neck detection for a welding power supply as a control target, the method comprising:
using the control target welding power supply together with another power supply for performing arc welding concurrently at a plurality of locations of a common workpiece, the control target welding power supply providing a welding current to a welder including a welding wire; detecting a neck in a molten portion of the welding wire which is brought into short-circuiting contact with the common workpiece based on a fact that a welding voltage applied by the control target welding power supply reaches a predetermined neck detection value; reducing the welding current for forming an arc; automatically adjusting the neck detection value based on a neck detecting time which is a period from the detection of the neck to the formation of the arc; wherein the neck detection value is adjusted with a smaller gain when a welding current is concurrently supplied from said another welding power supply, the neck detection value being adjusted with a larger gain when a welding current is not concurrently supplied from said another welding power supply. |
