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How To Determine When EDM is Appropriate?Our recommendations are sorted based on three physical characteristics of the EDM process:
Consider using EDM when parts have high ratios of cavity depth to width, such as slots and ribs. Since the EDM process does not require force, you can use very long electrodes to make extremely intricate ribs. If you have a difficult recessed cut to make Wire EDM is an ideal process. It can be used to make fixtures, collets and jet engine blade slots, mold cooling ribs and reinforcing ribs. Since the electrode does not come in contact with the material, there's no adhesion of the work piece to the tool. This fact makes wire and ram EDMs ideal for making magnetic reader heads for missiles, artificial joints, turbine blades and car engine prototypes. Vaporizing Very Hard Carbide SteelEDM doesn't recognize hardness of material, so it's ideal for cutting materials that have hardness above Rc 38, including hardened steel, Stellite and Tungsten Carbide. EDMs are used to create complex dies and other tools from extremely hard materials. Another time to consider using EDM is when you are making a part with accuracies that are difficult to maintain. EDM shines in producing sharp internal corners. Conventional machining has problems with internal radii less than or equal to 1/32 inch that are parallel to the tool axis. The internal radius cut by wire EDM is as small as the spark gap, plus the radius of the wire. EDM electrodes generally don't rotate and since there is no force, very small, long tools can be used. The minimum EDM wire diameter is 0.0012 inch versus the minimum production milling cutter diameter of about 0.1 inch. T Product Finishes No Burrs Cost AdvantagesIf you're making a part or product with a material that tends to leave tough burrs when using traditional machining, EDM can solve that problem. The EDM process leaves no burrs and the vaporized material is flushed away by the dielectric. By eliminating the deburring process, EDM eliminates extra operations and the potential of causing dimensional changes that can occur during the deburring process. As a result, EDM is often used to make surgical tools and copper electrodes. Eliminating extra steps lowers cost. An additional cost advantage is the unattended nature of EDM. This makes
it a cost-effective process allowing unattended operation. The fast turnaround
time in EDM makes it ideal for small lots of parts, allowing you to reduce
inventory or quicken delivery dates. This contributes to improved cash
flow and reduced operating expenses. For Further Information: For further inquiries please Contact Us
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