On the Method of Reducing Radio Interference in the AC TIG Arc Welding Process

Reduction of High Frequency Current in Welding

Abstract

The high frequency current which is superimposed on the AC TIG arc welding current to stabilize the arc gives sometimes rise to radio interferences. However, the perfect means to solve the troubles have not yet been found.
A new method to reduce the radio interferences is described in the paper. This technique makes skilful use of the known fact that the restriking voltage on each half-cycle decreases remarkably owing to the high temperature in arc column and electrodes after establishing a welding arc.
This method shows one of the possibilities that the radio interferences which are.caused by the AC TIG arc welding process with high frequency current are almost neglected.