The more often a machine is cleaned, the easier and quicker it is to maintain. Failure to wipe down machine areas regularly will result in build up and will require significant time and energy to restore. Be careful when choosing your cleaners; […]
Common work metals, such as tool steels, are easy to EDM with traditional graphite electrodes. Others are not. Because of their unique characteristics, questions continue to arise about effectively EDMing materials like Beryllium Copper, Titanium and Tungsten Carbide. Even though graph-ite electrodes do an admirable job of EDMing these exotic metals, there is a more [...]
The spark intensity is not the only determining factor affecting the surface integrity. This also is dependent on the thermal conductivity of the work metal. High thermally conductive metals will usually have a smaller white layer and less microcracking than a lower conductive material. […]
Surface finish and integrity are two different facets of the cavity quality, but both play an important part in the characteristics of the mold. Much as the machine parameters affect the integrity of the sub-layers of the cavity, […]
The health and welfare of toolmakers that use EDM graphite to make electrodes for use in the electrical discharge machining department should be a high priority for management. In addition to the health issues for the workers, […]
The EDM is derived from Electrical Discharge Machining. The EDM process as we know it today started in 1770 with the observations of Joseph Preistly. He noticed that electrical discharges had removed material from electrodes used in his experiments. This is also known as electro-discharge erosion. Later on in the 1940's Soviet researchers developed a [...]