Good EDM results require not only the proper selection of EDM material, but also proper machine settings, such as peak current, on time, off time, gap size, electrode polarity and most importantly the flushing conditions.
Due to the many variations in work piece geometry, the EDM machine setting conditions for new geometries are mainly selected from experience and fine tuned as the work progresses. In effect, the geometry of the piece being produced will determine the right selection. There is not only one proper combination of settings for each grade of graphite, but in reality as many different setting combinations as the number of pieces that can be manufactured by EDM.
That is why experience in EDM is the number one factor of success. Our technical team can give the basic support needed to help you understand the effects of these different setting parameters. This information will help you determine the proper parameters.
Surface finish achievable on steel with ELLOR® graphite:
Maximum current density per material: