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US 2015/0028009 A1Published application
Method for controlling neck detection for welding power supply
AssigneeDAIHEN Corporation
InventorAkihiro IDE
Life of this patent
Estimating the term…
Abstract
A method is provided for controlling a neck detection for a welding power supply. The neck detection can be suitably performed even if the welding power supply is combined with another power supply for performing a simultaneous arc welding operation at a plurality of locations of a workpiece.
Claims6
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.
2 more elements
A welding power supply system comprising:
- a first power supply for concurrent use with a second power supply for performing arc welding concurrently at a plurality of locations of a common workpiece, each of the first power supply and the second power supply providing a welding current to a welder including a welding wire;
- means for 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 first welding power supply reaches a predetermined neck detection value;
- means for reducing the welding current for forming an arc;
- means for 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 means for automatically adjusting adjusts the neck detection value with a smaller gain when a welding current is concurrently supplied from the second welding power supply, while adjusting the neck detection value with a larger gain when a welding current is not concurrently supplied from the second welding power supply.
2 more elements
Dependencies are inferred from the claim text.