Welding Current Characteristic
The welding current characteristic shows the ratio between current and voltage of the welding source. It affects burn-off behavior and weld quality.
Physical-Chemical Working Principle
The welding current characteristic is a graphical representation showing the relationship between current and voltage of a welding source. It describes how voltage changes as current varies.
Metallurgical Relevance & Welding Risks
The characteristic affects the burn-off behavior of the material and can lead to various issues. Too high a current can cause overheating and distortion, while too low a current results in insufficient burn-off or long weld times.
Shop Practice & Action Guidelines
To achieve an optimal weld, it's important to know the welding current characteristic of your welding source. For TIG welding, a steeper current profile is usually preferred, while for MIG welding, a flatter profile is typical. The exact setting depends on the material and desired weld quality.