What Is Wire EDM?

Wire EDM (Electrical Discharge Machining) is a non-traditional machining process that uses electrical energy to cut and shape metal parts. It is also known as Wire cutting, wire burning, or spark EDM. In this process, a thin wire is used as an electrode to create an electrical discharge between the wire and the workpiece. This electrical discharge erodes away metal from the workpiece to create the desired shape. Wire EDM is typically used for parts with intricate shapes or hard materials that are difficult to cut using traditional machining methods

EDM Benefits

Wire EDM machines are able to carefully remove excess material without exerting a strong cutting force. The process is often automated, meaning it has less chance of causing damage to the workpiece itself. And because wire EDM machines can accommodate hard materials, there is no need for secondary, post-machining thermal treatments. As a result, there is little to no heat stress placed on the shaped part, and less chance that the surface of the part will become distorted.

EDM Applications

Wire EDM is most commonly used in mold and die manufacturing processes, particularly for extrusion dies and blanking punches. EDM can be used in everything from prototypes to full production runs, and is most often used to manufacture metal components and tools. The process is best suited for applications requiring low levels of residual stress.

EDM Industries

EDM is most commonly used to manufacture parts and components for the automotive, aerospace, and electronics industries.