The technology of EDM (Electro Discharge Machining) has been around for more than 100 years. The main benefit of using this method is that it does not require heat or pressure to cut through materials.
This approach is used in various fields such as aerospace, automobile, medical, military, durable goods, and so on. This approach is also called Electro Machining. There are lots of kinds of EDM makers which are readily available in the market. They are broadly categorized into two types, manual and automatic. Manual EDM is generally used for small tasks where there is no requirement for high precision.
Automatic EDM makers are primarily utilized in large scale tasks where there is a need for high precision. One of the most important advantages of EDM over other machining processes is that it is less prone to mistakes and can offer better accuracy.
EDM makers are basically based on 2 technologies, wire discharge machining and electrochemical machining. The former includes melting the metal and after that removing it from the electrode through the action of electrical existing. The latter uses chain reaction in between the electrode and the workpiece to remove the metal.
Wire EDM is one of the best techniques for carrying out the above discussed tasks. The wire acts like a cutting tool and removes material from the workpiece. The speed of the wire figures out the quality of the cut.
EDM can be done in either air or water. In the case of air, the workpiece is put inside a vacuum chamber and then the wire is fed into the chamber. Water EDM is performed in a tank filled with water. The workpiece is put in the tank and the wire is inserted into the water. In both cases the workpiece need to be electrically conductive.
In addition to these, there are numerous other elements which identify the quality of the cut. Some of them are:
• The voltage applied to the electrode
• The kind of wire being utilized
• The kind of workpiece being utilized
• The range in between the wire and the workpiece
• The kind of dielectric fluid being utilized
• The frequency of the electrical current
• The type of tool holder
• The temperature of the wire
The above pointed out factors impact the efficiency of the maker. Therefore, in order to get great outcomes, it is necessary to understand the fundamental principles of EDM.
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