When I hear the word conventional, I think of the guidelines that apply to most people. The word itself means the generally accepted rule or practice. So when I hear conventional electrical discharge machining… I understand that it gets a little confusing. For most people electrical discharge machining isn’t something we work with everyday. Many probably have never heard of it at all. So it’s like saying the conventional method of piloting a rocket ship. Personally, I don’t know anyone that has done this. So while there may be a conventional method amongst the people who have done this in their lifetime, it’s still never going to be conventional to the rest of us.
Conventional electrical discharge (EDM) is one method of EDM which is a way to reform and adjust metal materials into different shapes, sizes or patterns. Conventional EDM uses electrical energy to melt away unwanted material from the metal work piece. It is able to work on small and large pieces of metal, and various different types of metals. Conventional EDM is a great method of forming metal because it is does not subject the work piece to heat damage or surface distortion. The products can come out smooth with complex and intricate designs. The only disadvantage of this process is the electrodes used to create the energy do wear down with time. They often require frequent replacement to ensure the process is preformed in the most effective and accurate way possible.
Conventional EDM is an alternative to wire EDM. The advantage to this method is it does not require a pre-drilled hole like wire EDM does. Another advantage is the conventional method can produce three-dimensional parts, while the wire method only works with two-dimensional items. There are three types of conventional EDM including sinker EDM, plunge EDM and ram EDM.