0 like 0 dislike

1 Answer

0 like 0 dislike
Electrical Discharge Machining (EDM) is a manufacturing process that uses electrical sparks to remove material from a workpiece. Here's a simple explanation:


Place a conductive workpiece (usually metal) and an electrode (often made of copper or graphite) close to each other in a dielectric fluid.

Generate Sparks:

Apply electrical voltage between the workpiece and the electrode, creating sparks.

Material Removal:

The sparks erode the workpiece, removing tiny particles.

Dielectric Fluid:

The dielectric fluid flushes away debris and helps control the sparking process.

Precision Machining:

EDM can achieve high precision, creating intricate shapes and fine details.

Types of EDM:

Wire EDM uses a thin wire as the electrode.

Sinker (or Ram) EDM uses a shaped electrode to create a negative of its shape in the workpiece.


EDM is used for making molds, dies, and components with tight tolerances.

It's effective for hard materials that are challenging to machine using traditional methods.

Related questions

Welcome to NZ METAL Q&A

NZ METAL is an online Q&A website providing a platform to ask questions about metal processing, raw materials, equipment, suppliers, process details, and work.

Please note: URLs related to pornographic, violent, children, discriminatory, etc., are not allowed. If adding a URL, ensure it is relevant to the problem.

If you have any questions or suggestions about this website or posts, please contact us at: info@nzmetal.com