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EDM

The Technology

Electrical Discharge Machining (EDM) machining process enables ELE to produce slots, holes and desired complex shapes that would otherwise be difficult to produce with conventional cutting methods in extremely hard material to very close tolerances.

Fast Hole Drilling

The Technology

Fast Hole Drilling (FHD) is also an EDM process that is a cost effective method for producing small, tight tolerance holes in hard conductive materials. It is ideal for holes greater than 0.3mm/0.012” diameter and up to 100mm deep and can also accommodate blind holes

FHD may be an alternative to the STEM drilling process, where depth to diameter ratio is not large.

ELE’s 5-axis machining allows for easy access as well as fast and accurate location of hole positions.

Fast hole drilling is particularly advantageous when drilling holes on curved or angled surfaces as the electrode does not need to exert any pressure on the surface. Hence, this process is ideal for machining holes on aerofoil surfaces.

ELE is NADCAP approved for the EDM process.

 

ELE options for drilling holes

  • Stem Drilling – for holes in material greater than 15mm/19/32” thick and up to 600mm/24” deep. Can also accommodate blind holes.
  • Laser Drilling – for holes greater than 0.3mm/0.012” diameter in material less than 15mm/19/32” thick and capable of drilling thousands of holes in a single component.
  • Fast Hole Drilling – for holes greater than 0.3mm/0.012” diameter and up to 100mm/4” deep can also accommodate blind holes
  • Capillary Drilling - for precise holes smaller than 0.3mm/0.0012” diameter

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