Electrical Discharge Machining Electrode Material

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• 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...
• 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...
• Medical Device Link .
  process that aims to match the material of the work piece with the electrode material and the control parameters such as voltage, power, spark duration and frequency so that the best eroding conditions are obtained. All EDM techniques use the principle of creating electrical sparks between an electrode...
• 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...
• 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)
  . accurately up to the yield strength. 3. The high-speed bit used to introduce the hole. in the hole-drilling technique can often cause. Figure 1 ­ Close up of ring core test location showing strain gage. significant residual stresses in work-. rosette, lead wires and EDM electrode. hardening materials...
• Incremental Ring-core Determination of the Principal Residual Stress in a Duplex Stainless Steel Centrifuge (.pdf)
  . through the entire centrifuge bowl wall. Strain gages. elastic theory and consists of dissecting a circular plug. were placed at the bottom of the predrilled holes and. containing a strain gage as shown schematically in. subsequently ring cored. Figure 3. Electrical discharge machining (EDM) is used...
• 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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