Pulse discharges ignited by the use of conductive flour composite resin electrode in a dielectric liquid

Abstract

This paper presents a study of the ignition by the use of the conductive flour composite resin electrode. By using this composite resin as one side of electrode, the dispersion of Multi-Arc Spots can be formed on the face of opposite metal electrode. The experimental results show that the Multi-Arc spots phenomena are took place during the course of applying one short current pulse accross the narrow gap between the separated electrodes in a kerosene. And also, the sufficient condition has been defined in regard to the occurrence of the Multi-Arc Spots phenomena.
This composite resin are prepared from mixing up carbon-black or copper flour with metacrylic resin or with poly-tetrafluoro ethylene. These have a property of thermoplastic.
We are trying to carve a seal on the metal. The steel material (Sk-2) can be removed just like the seal which are carved by using a cutter-nife on the surface of this composite resin electrode. Then, it is a weak point that the wear of the composite resin electrode are not so small in comparison with the steel removal. But, EDM by the use of composite resin electrode will be distinguished on the procedure of forming electrode with ease and economically by making use of the thermo-plastic or thermosetting properties of the resin.