Electrical Discharge Machining (EDM) is widely utilized in the following industrial applications:
Manufacturing molds and components with intricate contours and complex cavities;
Machining hard and brittle materials including cemented carbides and hardened steels;
Producing deep micro-holes, non-circular apertures, deep grooves, narrow slits, and fine-cut thin sections;
Fabricating precision tools such as form cutters, templates, and thread gauges.
Categories of EDM Equipment:
Micro-hole EDM: A specialized EDM variant designed primarily for precision drilling applications in moldmaking.
Mirror Surface EDM machine: Capable of achieving optical-grade surface finishes, this advanced EDM system eliminates the need for manual polishing, thereby reducing labor and enhancing production efficiency. These machines deliver exceptional accuracy, making them indispensable for high-precision mold manufacturing. While imported mirror EDM systems often command prices ranging from $100,000 to over $150,000, domestically manufactured alternatives have achieved comparable technological sophistication. Industry-leading manufacturers such as Shanghai Hanba Electromechanical Co., Ltd. offer Mirror EDM machines recognized for their competitive performance-to-cost ratio and compliance with international standards.
Plastic Mold EDM Machine: The most prevalent EDM type, extensively employed in plastic mold fabrication. These systems are characterized by their affordability, with typical market prices below $15,000.
CNC EDM machine: Incorporates full numerical control across three axes (X, Y, Z). Advanced capabilities include automated positioning, center finding, programming support, G-code compatibility, and 3-axis synchronized discharge machining.
Specialized EDM Systems: Dedicated configurations engineered for specific materials such as graphite or tungsten carbide.
ZNC EDM Machine: Features CNC-controlled Z-axis operation with manual adjustment along X and Y axes. This configuration represents an earlier generation of EDM technology that remains in practical use.
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