During EDM, the corner loss is the largest, and the size of the corner loss determines the electrode life. Because the final processing wheel is determined by the electrode loss at the corners and edges of the electrode, if the weakest part of the electrode can effectively resist the loss, the electrode's life will be the longest.
The melting point of ultrafine graphite rods is 2000 ° C higher than that of copper. The strength of ultrafine graphite rods is higher than that of copper, and the angular loss during processing is small. This means that the life of ultrafine graphite rods is long and the processing cost is lower than that of copper. electrode.