Plunge EDM

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The piece of material to be worked on is connected to a power supply and then an electrode is used to create a conductive path and cut the material into the desired shape or pattern. Read More…

Plunge EDM Plunge EDM, which goes by many names including conventional EDM, sinker EDM and ram EDM, produces parts by eroding materials in the path of the EDM tool using electrical discharges, or sparks that can generate heat anywhere from eight to twenty thousand degrees.

Leading Manufacturers

Rochester Hills, MI  |  248-608-2400

Our job shop offers electrical discharge machining (EDM). At Quad Precision Tool, our reputation of manufacturing tooling to exacting specifications is unexcelled. We machine conductible materials using wire EDM & conventional/CNC sinker EDM. We also do high speed EDM drilling & micro-hole drilling.

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Quad Precision Tool Co., Inc. $$$

Hudson, NY  |  800-775-1651

Saturn Industries offers the finest precision machining services: wire, sinker, and small hole EDM; laser-inspected centerless grinding; CNC milling; turning; and flat and contoured grinding to ±0.0002" tolerances. Serving today's highly complex EDM applications, we specialize in EDM electrodes.

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Saturn Industries, Inc. $$$

Costa Mesa, CA  |  877-467-9336

SWISS WIRE EDM is currently the only Electrical Discharge Machining facility in the area certified to ISO9001/2000, AS9100A & NADCAP. These certifications & our 17 top-of-the-line machines ensure exemplary quality & excellent turnaround. We offer wire EDM, plunge EDM & small hole EDM.

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Swiss Wire EDM $$$

Fridley, MN  |  763-783-7808

Twin City is ISO 9001:2000 certified for all simple & complex EDM services, in addition to many other services & their forte is producing difficult, complex parts through their state-of-the-art equipment & highly skilled staff. TC will perform the nearly impossible & are known to give both 100% in quality & service. Their flexibility & versatility provide customers with affordable convenience.

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Twin City EDM $$$

Los Alamitos, CA  |  562-596-2784

Our company has the capabilities and the know how that you can rely on to help you come up with a wire EDM product that will suit your needs. It is our hope that we are able to treat each and every customer like they are number one in hopes of turning first time customers into lifelong connections. We are able to work with almost any material no matter the hardness. Get in touch with our customer service division for more information today!

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Wire Tech EDM, Inc. $$$
placeholder image Quad Precision Tool Co., Inc. Saturn Industries, Inc. Swiss Wire EDM Twin City EDM Wire Tech EDM, Inc.

Plunge EDM, which goes by many names including conventional EDM, sinker EDM and ram EDM, produces parts by eroding materials in the path of the EDM tool using electrical discharges, or sparks that can generate heat anywhere from eight to twenty thousand degrees. The piece of material to be worked on is connected to a power supply and then an electrode is used to create a conductive path and cut the material into the desired shape or pattern.

There is no actual contact between the electrode and the work piece as the erosion takes place as a response to the electrical current being produced. The process takes place in a dielectric fluid, allowing electricity to be conducted. The fluid is always used to flush away the debris from the process allowing for clean and burr free edges. Plunge EDM is ideal for applications such as injection mold tooling, micro hole drilling, keyways, washers and scientific research apparatus.

Industries served include aerospace, medical, tool and die, automobile and military. It is able to achieve high tolerances on complex geometries and patterns. Unlike wire EDM which uses a pre-drilled hole to feed the wire into for the process, plunge EDM does not require a hole. Common plunge EDM electrodes include machined graphite, copper tungsten and brass.

One of the two major types of EDM, plunge EDM differs from its counterpart wire EDM nor only in terms of the type of electrode used but also because plunge EDM has 3D capacities while wire EDM can only produce 2D parts. Furthermore, plunge or ram EDM can be applied to hard materials including stainless steel, copper, graphite, and exotic metals that would cause difficulties during conventional machining.

The process of electrical discharge machining typically takes place in a shallow bath of dielectric fluid, which prevents premature sparking and flushes away debris. For high precision pieces, CNC EDM is used in which CNC machines are used to guide, monitor and control the machining process, as well as CAD and CAM software to ensure the highest tolerances. One disadvantage to using this process is the extra time and costs involved with fabricating the electrodes necessary for the specific procedure.

These can be costly and can wear down easily due to the intensity of the electrical process. Therefore, it is important to take this aspect of EDM machining into consideration before committing, however, the tight tolerances and minimal product damage remain as advantageous benefits to using EDM.