{"id":10857,"date":"2025-03-22T14:28:13","date_gmt":"2025-03-22T13:28:13","guid":{"rendered":"https:\/\/seobest.de\/demo140311\/?page_id=10857"},"modified":"2025-12-04T22:26:39","modified_gmt":"2025-12-04T21:26:39","slug":"edm","status":"publish","type":"page","link":"https:\/\/u-eitner.de\/en\/edm\/","title":{"rendered":"EDM"},"content":{"rendered":"\n
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Electrical Discharge Machining (EDM) \u2013 Sink EDM and Wire EDM<\/h2>\n\n\n\n
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EDM is a non-cutting manufacturing process used for machining electrically conductive materials. There are two main methods: Sink EDM and Wire EDM – both of which we use to create components when traditional machining techniques reach their technical limits.<\/p>\n\n\n\n

For us, EDM is not a theoretical concept but a daily practice. We employ it strategically where geometries are intricate, materials are extremely hard, or tolerances are exceptionally tight. Whether for prototypes, single parts, or series production: we don\u2019t use EDM “just for the sake of the technology” but always with a focus on functionality, fit, and cost-effectiveness for our customers.<\/p>\n\n\n\n

How EDM Works at Our Facility<\/h3>\n\n\n\n
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Unlike milling or turning, material removal in EDM is not achieved through mechanical forces, but through controlled electrical discharges. Sparks are generated between the tool (electrode or wire) and the workpiece, removing material in a localized manner. The workpiece is not mechanically stressed during the process – a significant advantage when machining sensitive contours or very hard steels.

We control the process using precisely defined parameters such as current strength, pulse duration, and flushing strategy. The dielectric fluid (the process liquid) performs several tasks: it cools, removes eroded particles, and stabilizes the spark process. The result: reproducible precision.<\/p>\n<\/div>\n\n\n\n

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Sink EDM \u2013 When Depth of Shape and Detail Matter<\/h3>\n\n\n\n
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In sink EDM, we create an electrode whose geometry is transferred onto the workpiece. This “negative mold” is then carefully inserted into the workpiece. This is where our strength lies: We consider the electrode and the workpiece as a unit. Only in this way can we produce parts that not only fit, but function reliably in the long term.<\/p>\n\n\n\n

Typical tasks we solve using sink EDM:<\/p>\n\n\n\n

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  • Deep cavities and undercuts<\/li>\n\n\n\n
  • Structured surfaces<\/li>\n\n\n\n
  • Functional pockets<\/li>\n\n\n\n
  • Sharp internal edges<\/li>\n\n\n\n
  • Inserts for toolmaking<\/li>\n<\/ul>\n\n\n\n

    Especially with complex shapes, experience makes the difference. We select materials, geometry, and EDM strategy to ensure shape accuracy and surface quality – no matter how deep or intricate the details are.<\/p>\n<\/div>\n\n\n\n

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    Wire EDM \u2013 Clean Contours, Reproducible Cuts<\/h3>\n\n\n\n
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    In wire EDM, a thin, charged wire acts as the tool. It cuts the workpiece without contact along a defined contour. This process is the first choice when:<\/p>\n\n\n\n

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    • Profiles need to be exact<\/li>\n\n\n\n
    • Cutting gaps need to be minimal<\/li>\n\n\n\n
    • Burr-free edges are required<\/li>\n\n\n\n
    • Geometries are complex<\/li>\n<\/ul>\n\n\n\n

      In practice, we use wire EDM to manufacture items such as punches, dies, functional profiles, or mold plates. The advantage in series production becomes clear: each part is identical, with no compromises in quality.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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      When We Use EDM \u2013 and When We Choose Not To<\/h3>\n\n\n\n
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      EDM is not a “one-size-fits-all” tool. We use it when it is technically advantageous. Our strength lies in assessing honestly whether EDM offers the best added value or if another method would be more cost-effective.<\/p>\n\n\n\n

      Typical reasons we choose EDM:<\/p>\n\n\n\n

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      • Very hard materials<\/li>\n\n\n\n
      • Smallest radii<\/li>\n\n\n\n
      • Tight tolerances<\/li>\n\n\n\n
      • Complex internal contours<\/li>\n\n\n\n
      • Stress-sensitive components<\/li>\n\n\n\n
      • High reproducibility requirements<\/li>\n<\/ul>\n\n\n\n

        Our advice begins by understanding your part – not when the machine starts.<\/p>\n<\/div>\n\n\n\n

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        Materials? It\u2019s Our Everyday Business.<\/h3>\n\n\n\n
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        We perform EDM on all electrically conductive materials, such as:<\/p>\n\n\n\n

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        • Tool steel<\/li>\n\n\n\n
        • Stainless steel<\/li>\n\n\n\n
        • Carbides<\/li>\n\n\n\n
        • Copper<\/li>\n\n\n\n
        • Aluminum<\/li>\n\n\n\n
        • Titanium<\/li>\n\n\n\n
        • Special alloys<\/li>\n<\/ul>\n\n\n\n

          It\u2019s not about hardness, but conductivity. And our production is set up for just that.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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          What Sets Us Apart \u2013 Technology + Responsibility<\/h3>\n\n\n\n
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          Machines alone do not produce quality.
          It is the combination of experience, process understanding, and honest advice.<\/p>\n\n\n\n

          What our customers value about us:<\/p>\n\n\n\n

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          • Well-structured processes<\/li>\n\n\n\n
          • Dedicated points of contact<\/li>\n\n\n\n
          • Realistic timeline planning<\/li>\n\n\n\n
          • Clean documentation<\/li>\n\n\n\n
          • Consistent quality<\/li>\n\n\n\n
          • Solution-oriented thinking<\/li>\n<\/ul>\n\n\n\n

            We don\u2019t see every part as just an \u201corder,\u201d but as a responsibility.<\/p>\n<\/div>\n\n\n\n

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            Quality Thinking in the Process \u2013 Not Just at the End<\/h3>\n\n\n\n
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            Quality is created during the machining process.
            Our machines monitor:<\/p>\n\n\n\n

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            • Spark stability<\/li>\n\n\n\n
            • Material removal behavior<\/li>\n\n\n\n
            • Position accuracy<\/li>\n\n\n\n
            • Repeatability<\/li>\n<\/ul>\n\n\n\n

              Measurements are not performed “at the end” but continuously during the process. This allows us to detect deviations early and prevent scrap, rather than simply documenting it after the fact.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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              Conductive Materials and Surface Quality<\/h3>\n\n\n\n
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              We process all electrically conductive materials – regardless of hardness or alloy composition. These include tool steels, stainless steel, copper, aluminum, titanium, and special alloys. Another significant advantage of our EDM technology lies in the excellent surface quality we can achieve. By precisely controlling EDM parameters such as pulse duration, current strength, and flushing, we can influence surface roughness values exactly and tailor them to the required application conditions. Upon request, we can achieve surface qualities down to fine micrometer levels – reliably and reproducibly.<\/p>\n<\/div>\n\n\n\n

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              Sinking EDM Machines<\/h3>\n\n\n\n