Electrical Discharge Machining

EDM is the acronym for Electrical discharge machining which is a tooling technique that utilizes electrical energy to mold and shape metal parts. Electrical discharge machining is widely considered as one of the most exact and complete manufacturing technique or system of working extremely rigid metals and other materials that are hard to machine plainly with more usual and traditional methods. Various metals can be cut with electrical discharge machining that may include: lead, bronze, cobalt, silicon, aluminum, gold, nickel, titanium, copper, zinc, stainless steel, iron, and tungsten. Many other metals may also be cut by electrical discharge machining since electrical discharge machining manufacturing method can be employed on numerous different metals and compounds.

In other words, Electrical discharge machining or EDM is a procedure of removing metal and material in the path of electrical discharges that make a curve between an electrode and the work piece until the preferred result is accomplished. With the help of electrical discharge machining exceptionally accurate, consistent and affordable results are attained, its special features have made it the number one choice for many companies and organizations.

Electric discharge machining has benefits over many other machining methods due to its capability to generate multifaceted and complex parts with a high level of precision. This procedure is capable to cut hard materials, where other machining methods would have complexities. In addition, EDM has the power to machine parts on an exceptionally small scale. While using this procedure, the work piece is not bended or molded from force because there is no direct connection between the electrode and the material, and similarly the work piece is burr-free and protected from heat damage because very small amount of heat is created during the process that would damage the material.

There are two types of electrical discharge machining method that are: wire and probe. Wire EDM is exercised for cutting figures and molds through a chosen section or assembly. The model must have a hole drilled into it; the wire is then inserted through the gap to finalize the machining process. On the other hand, Probe EDM is employed for more composite and intricate geometries and shapes in Probe EDM machined graphite or copper electrodes are exercised to grind down the preferred shape or form into the part or assembly.

Sinker electrical discharge machining (EDM) is also known as Ram or Conventional EDM. Sinker EDM makes use of an electrically charged electrode to mold and form a particular shape into a metal piece. It sinks mold from the electrode portion into the oil dipped work piece, not slicing or cutting all the way through the metal. The electrode of the sinker EDM discharges electrical sparks that bound to the metal piece and tear out minor fragments. The materials generally employed for the electrode are copper, tungsten, graphite or brass. Graphite is however considered best for use because of its machining ability and copper is recommended for its fine finish necessity. Sinker EDM is a flexible method permitted for application on a broad array of sized parts from those that can fit in the palm of a hand to materials that weigh over 100 kilograms, and nearly everything in between.

Sinker EDM is used to form parts out of even the hardest materials and to form very complex and composite shapes and geometries. But the application of sinker EDM is limited to some material as some metals cannot be cut or shaped with sinker EDM because they are not electrically conductive.