Electrical Discharge Machining Electrode

Conduct Research

• Electrical Discharge Machining (EDM)
  Electrical discharge machining (EDM) uses the discharge from an electrode to cut metal. There are two main types of EDM: wire and ram. With wire EDM, the electrode is a thin wire typically made of brass or other alloys. With ram EDM, the electrode is a specially shaped piece of graphite or copper...
• Copper EDM Electrodes
  EDM electrodes and materials (wire or tube) are used in (EDM), a process that removes metal with an electrical discharge of very short duration and high current density between the electrode and the workpiece. Copper is often used to manufacture electrical discharge machining (EDM) electrodes...
• Automating the moldmaking process
  for pockets and other features, for automatic machining. Automated electrodes. When machining cannot easily produce small features, sharp corners, or textured finishes, toolmakers often turn to electrical discharge machining. EDM removes metal by rapid electrical discharges between an electrode and workpiece...
• Advanced Manufacturing: Rapid Roughing of Tough Materials
  , and engine complexity. Blisks are usually roughed-out by CNCs, electrochemical milling (ECM), or electrical-discharge machining (EDM), and then hand polished. A more recent and faster roughing approach comes from so-called "blisk" machines that combine processes similar to ECM and EDM...
• Medical Device Link .
  and the work piece. A voltage difference is applied between the work piece, which has to be electrically conducting or semiconducting, and the electrode. When the voltage is high enough, an electrical discharge takes place that generates heat in the work piece or the electrode, and often both. The...
• Applications
  have been completed. The base metal must be weldable. Straight low-carbon steels or austenitic (300 Series) stainless steels, except free-machining grades, produce good weld results with normal techniques. Other steel alloys can be welded, but heat treatment may be required to develop full weld...
• Industrial Hard Chrome Plating
  and strip tanks. The dimensions of this copper will vary considerably. Not only must it be sized to carry the electrical load without overheating, it also must carry the physical weight of the parts suspended from it. Horizontal crossover bars also exist which deliver power from the permanent tanktop copper...
• Improved Damage Tolerance Of Ti-6Al-4V Aero Engine Blades And Vanes Using Residual Compression By Design (.pdf)
  specially designed test fixtures. FOD was simulated with machined notches for the blade and electrical discharge machined (EDM) notches for the vane. Residual stress and cold work distributions were measured using x-ray diffraction mapping techniques. LPB produced a zone of nominally -100 ksi (-690 MPa...
• Measurement of Residual Stresses Using Ring-Core Technique (.pdf)
  such as the nickel based. Data reduction software, also written at Lambda, is used. superalloys and austenitic stainless steels. to compute the principal residual stresses as a function of. Machining stresses have no significant effect. depth. The maximum depth to which the residual stresses...
• What you should know about Moldmaking
  for electrical discharge machines (EDMs). This is called electrode extraction. It is used for producing mold details too small for machining. Appropriate geometry is extracted, turned inside-out, and offset by the EDM machine's specified spark gap. The CAM system must let moldmakers window and extract...

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