However, the copper material is highly conductive as well as strong. The benefit of graphite is that it is more easy to machine in relation to copper. The main factors influencing the decision for electrode’s material are its conductivity and resistance to erosion. Usually, the electrodes are made of graphite or copper for die sinking EDM. The common materials comprise metal alloys or metals like solidified steel, titanium, as well as composites. Generally, conductive materials can be machined using electrical discharge machining. In this process, the electrodes are tubular, and the dielectric fluid used in it is fed through an electrode. In addition, the drilled holes do not require any deburring. As opposed to traditional methods, it possible to machine very small as well as deep holes in the EDM process. It is used to drill holes, as the name implies. The third type is known as hole drilling EDM. The wire, often made from copper or brass, is held using diamond guides. If the cut should be made in the center rather the workpiece’s outside, the small hole drilling process is used to create a hole in it through which this wire is later threaded. During machining, it is coming constantly from this automated feed with the spool. This wire used in the process serves as the electrode. It uses a thin wire for cutting the workpiece. Then, this electrode is sunk to the workpiece, making a negative version of the original shape of it. It necessitates electrodes (often produced from copper or graphite) pre-machined for having the required shape. It allows the production of intricate shapes. The process briefed above is known as sinker EDM. It is possible to do many different processes with EDM, comprising milling, turning, small hole drilling, and grinding. There are three types of electrical discharge machining processes. Furthermore, it is required to control the sparks. The liquid is useful also for cooling, during the process of machining.

The excess material is eliminated with the dielectric fluid’s steady flow. It causes strong material’s heating, melting it away in small amounts. The amount of material removed using a spark is relatively small, yet a discharge occurs just about 100,000 times per second. For this process, both the electrode and workpiece are submerged in dielectric fluid. The process is a bit more intricate: in a tiny gap between the electrode and workpiece, a discharge happens that removes the material via vaporizing or melting. This electrode leaves in the workpiece a negative imprint. Electrical Discharge Machining (EDM) is a process that removes material in a precise manner from conductive materials with an electrode.

Edm machining