Principle of wire cut EDM Advantages & Disadavantages EDM

Working Principle. In Electrical discharge machining; a potential difference is applied across the tool and w/p in pulse form. The tool and workpiece must be electrically conductive and a small gap is maintained in between them. The tool and workpiece is immersed in a dielectric medium (kerosene or deionized water

Advantages  &  Disadavantages EDM

   

• Tolerances of +/- 0.005 can be achieved
• Material hardness does not effect process – Tungsten Carbide – Stellite – Hastelloy – Nitralloy – Waspaloy – Nimonic – Inconel all can be successfully machined by EDM
• Cutting complex shapes and thin walled configurations without distortion
• EDM is a no-contact and no-force process, making it well suited for delicate or fragile parts that cannot take the stress of traditional machining
• The EDM process leaves no burrs
  

Disadvantages

• Only able to machine conductive materials
• More expensive process than conventional milling or turning

internal spline make  very suitable machine