Cutting electrically conducting materials, esp metals - using oscillating electrode wire travelling at high speed plus an arc

摘要

In a process for the dividing and cutting to size of electrically-conducting materials, a voltate is applied between the material and an endless rotating electrode of sufficient magnitude that a heating arc is generated along the cutting zone and the molten material is mechanically removed by the electrode. The electrode is pref. vibrated during the process in the direction of cutting, and the voltage switched off in the phase during which the electrode removeds the molten material. The pref. device uses an endless wire electrode fed by a welding generator and running round rollers, a jet of gas being provided behind the electrode wire and guide-rolls on eccentric mountings used to supply the vibratory movement.