There are many different ways to create shapes from metal, but not all metals are easy to machine using traditional types of equipment and methods. For hard metals and for the rapid, precision production of parts without the need for tooling, wire EDM is often the best option in a non-traditional type of machining process.
EDM stands for electrical discharge machining, but the process may also be known as spark machining or wire burning. The name is very descriptive of the process, with wire EDM service offering precision cutting of metal through the use of a wire to provide the electrical spark to complete the cutting and shaping.
The Process
The choice of a wire EDM service starts with understanding the basics of the process. This type of machining can be used with any metals or even composite materials that are electrically conductive.
The thin EDM wire is electrically charged and is held between two spools to provide one electrode. The workpiece or the stack of thin metal sheets forms the other electrode. The charge or sparks between the wire and the workpiece do the work of cutting through the material. It is important to keep in mind the wire only forms the electrode; it is not the cutting tool itself.
The entire process is completed in deionized water, which does not impact the cutting ability but which flushes away the chips and cut debris and material. This adds to the precision of the cut surface. Using CNC technology, cutting metal by a quality wire EDM service can meet even the highest required tolerances.
With the use of wire EDM machining, it is possible for quick turnaround times on orders, even with the most complex of shapes and part requirements, making this a top option for most OEMs.
