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What is the role of EDM?

October 30, 2023

What is the role of EDM?

Electrical Discharge Machining (EDM) is a non-traditional machining method that removes material and forms the desired shape by generating spark discharge between the workpiece and the electrode. The main functions of EDM include:

1. High-precision machining: EDM can manufacture high-precision parts with complex geometries, small sizes, details and contours. It is a precision machining method suitable for applications requiring a high degree of accuracy.

2. Hard material processing: EDM is suitable for hard materials, such as carbide, steel, ceramics, etc., because it is not limited by the hardness of the material. This makes it ideal for manufacturing components such as tools, dies and cutters.

3. Complex geometries: EDM can be used to manufacture complex internal and external geometries, such as grooves, holes, cavities, engraved lines, and spiral shapes, which are often difficult to achieve through traditional mechanical cutting methods.

4. No thermal effects: EDM is a non-contact machining method that does not produce thermal effects on the workpiece, so it will not cause deformation, residual stress or thermal cracks. This is useful for processing heat-sensitive materials.

5. Low cutting force: Compared with traditional mechanical cutting methods, EDM requires very little cutting force, thus reducing wear on cutting tools and workpieces.

6. High surface quality: EDM can achieve a very smooth surface with almost no need for subsequent surface treatment or grinding, so it can produce a high-quality surface.

7. Processing of conductive and non-conductive materials: EDM is not only suitable for conductive materials, but also for non-conductive materials such as ceramics, plastics and most metals.

8. Small batch production: EDM is suitable for small batch production because it does not require the manufacture of special cutting tools and can quickly adapt to new product designs.

Electrical discharge machining is a high-precision, high-flexibility, and multi-material processing method used to manufacture complex and precise parts and workpieces. It is widely used in industries such as aerospace, automotive, medical equipment, mold making, and tool making.

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