Conventional EDM, also referred to as Sinker EDM machining, like Wire EDM, uses spark erosion to machine blind cavities.
This process employs machined electrodes that
produce sparks along the surface of the electrode to sink or plunge the
cavity. The Conventional EDM process is ideal for a number of applications:
Blind Cavities
Intricate Details
Sharp Corners
Fine Finishes (Surface Finishes to 10 Micro-Inch)
Thin Walls and Cross Sections
Machining Threads into Hardened Parts
Blind Keyways
Internal Splines, Squares, or Hexes
Tolerances to +/- .0001”
Any conductive material can be Conventional EDM machined, including aluminum, brass, carbide, copper, hastalloy, inconel, steel, stellite, and titanium. RPG Industries has complete in-house electrode manufacturing
capabilities.
Electrodes for Conventional EDM machining are generally made
from copper, graphite, or tungsten depending upon work piece material
and electrode wear requirements.