Wire cutting precautions

A certain gap must be maintained between the molybdenum wire and the machined surface of the workpiece. The width of the gap is determined by the processing conditions such as working voltage and processing volume.
When WEDM machining, it must be carried out in a liquid medium with certain insulation properties, such as kerosene, saponification oil, deionized water, etc. The higher insulation is required to facilitate the generation of pulsed spark discharge. The liquid medium also has Elimination of electrical corrosion products and cooling electrodes in the gap. Molybdenum wire and the workpiece to maintain a certain gap between the surface, if the gap is too large, the voltage between the two poles can not break through the dielectric between the poles, you can not produce spark discharge; if the gap is too small, it is easy to form a short circuit connection, can not produce electricity Spark discharge.