What is the role of electrical machining?
Electrical Discharge Machining (EDM) is a non-traditional machining method that uses electric spark discharge on metal workpieces to remove material and form the desired shape. The main functions of electrical machining include:
1. Precision machining: Electrical machining can be used to manufacture high-precision parts with complex geometries, small sizes, details and contours. This is because electrical machining is not subject to the geometric constraints of traditional cutting tools.
2. Hard material processing: Electrical machining is suitable for hard materials, such as steel, titanium, carbide, etc., because it does not depend on the hardness of the material. This makes it ideal for manufacturing components such as tools and molds.
3. Complex geometries: Electrical machining can be used to manufacture complex internal and external geometries, such as grooves, holes, cavities, engraved lines, and spiral shapes, which are usually difficult to achieve through traditional mechanical cutting methods.
4. No thermal effects: Electrical machining 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, electrical machining requires very little cutting force, thus reducing wear on cutting tools and workpieces.
6. Low surface roughness: Electrical machining can achieve a very smooth surface with almost no need for subsequent surface treatment or grinding, saving time and cost.
7. Processing of conductive and non-conductive materials: Electrical machining is not only suitable for conductive materials but also for non-conductive materials such as ceramics, plastics and most metals.
8. Small batch production: Electrical machining 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.
In general, electrical 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.