Tungsten-based EDM Electrodes

The method of dimensional machining of materials using the corrosion phenomenon produced by spark discharge is called EDM. EDM is a spark discharge in a liquid medium at a lower voltage range.

What are the specifications and types of tungsten-based EDM electrodes?

Electrode materials commonly used in EDM are copper and graphite. The main reasons are good thermal conductivity, good electrical conductivity, and easy processing. High-quality machining will use copper-tungsten alloy, which is expensive. There are two main types of electrode wires. The electrode wire of the slow-moving wire is generally made of copper wire, which is only used once and cannot be reused. EDM is generally used for the processing of cavities, blind holes, and free-form surfaces, while wire cutting is used for cutting, mainly including parts with fingerprint surfaces, including cylinders, polygons, and upper and lower anisotropic surfaces. Of course, both processing methods require materials that conduct electricity.

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