Abstract
This study analyzed the electromagnetic field around the wire electrode in wire-EDM to clarify the influence of the electromagnetic force generated by the electromagnetic field on the vibration of the wire electrode. Comparison between solid brass wire and steel wire coated with brass layer showed that thicker brass layer results in smaller vibration of the wire under the same discharge current. On the other hand, when the same pulse generator settings such as open voltage and internal resistance were used, thicker brass layer resulted in larger current passing through the wire. Thus the electromagnetic force acting on the coated wires was larger, leading to larger vibration of the wires.
