Introduction to Electrical Discharge Machining (EDM)
Release time:
2022-12-08
Electrical discharge machining (EDM) is a machining method that is mainly used for hard metals or metals that cannot be machined with conventional techniques. However, a key limitation is that it only applies to conductive materials. This method is particularly suitable for cutting complex contours or delicate cavities that are difficult to produce with grinders, end mills, or other cutting tools. Metals that can be EDM include hastalloy, hardened tool steels, titanium, carbide, inconel, and kovar.
This method is sometimes referred to as "spark machining" because it removes the metal by creating a series of rapid repetitive discharges. These discharges pass between the electrodes and the metal sheet being processed. The small amount of material removed from the workpiece is washed off with a continuous flow of fluid. Repeated discharges create a series of successive deeper pits in the workpiece until the final shape is formed.
Wire EDM (also known as EDM) is an electrothermal production process in which a thin, single-strand metal wire (usually brass) is combined with deionized water (used to conduct electricity) to cause the wire to use the heat generated by the EDM to cut the metal. Due to the inherent properties of the wire-EDM process, it can be easily machined with rigid conductive materials for complex parts and precision components.
Application
1. Widely used in the processing of various stamping dies.
2. It can process micro-holes, narrow seams and workpieces with complex shapes
, 3. Machining templates and forming tools.
4. Processing powder metallurgy molds, inlay cavity molds, wire drawing molds, corrugated plate forming molds.
5. Processing hard materials, cutting thin sheets, cutting precious metal materials.
6. Processing cams and special gears.
7. It is suitable for the processing of small batches and multi-variety parts, reducing the cost of mold making and shortening the production cycle.
8. It can be used to process material samples, various types of holes, and other parts with complex shapes and parts of high hardness materials.
9. Microstructure, special-shaped groove and standard defects can be processed.
10. When trial-making a new product, the parts can be cut directly from the blank.
When working with thin parts, multiple parts can be stacked on top of each other for processing.
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