Copper electrodes:
Wire-Cut EDMing after milling and hole EDMing
- ALC600G iGE = 12.5 h, 3 cuts, Ra 0.64, taper 0.5°
AL60G machining = 42 hours, Ra=0.47 µm
Sodick Die-Sinker EDM samples
Turbine wheel of cryogenic pump for liquid hydrogen (t=-170°) supply
- extra strong granular metal
- turbine wheel dia = 190 mm
- total metal removal volume – 1900 mm3
- total machining time – all blades on 2 sides = 12 days
Simultaneous 5 axes EDMing
Turbine wheel of cryogenic pump for liquid hydrogen supply
- extra strong granular metal (115-120 kg/cm2)
- space between turbine blades = 2,3 mm
- turbine wheel dia = 190 mm
- total metal removal volume – 3300 mm3
- total machining time – 7 days (4 electrodes of 4 shapes for 4 blades on 2 sides)
- Smallest Corner R Machining
- Stainless St – Cu, depth 0.3 mm
- Surface Finish – Ra 0.12 µm
- Bottom Corner R – 4 µm
- Multi-hole Machining by Intricate Electrode
- Stainless steel – Cu electrode, depth 5 mm
- Surface Finish – Ra 0.072 µm (Rz 0.41 µm)
- Electrode Wear – finishing 0.002 mm (bottom)
Machining WC workpiece CuW electrodes using “TPC4”. Total Machining Time reduced by 28%
Steel EDMing sample
(XYZ & С 4-axes simultaneous control):
- depth: 10 mm
- roughness: Rz=2,6 µm / Ra=0,7 µm
- machining time: 17 hr 10 min
- electrode: copper
- indexing angle: 20 °
SGF+ machining sample
(Gr electrode NANOwear):
EDM sinking of a cavity in steel with a graphite electrode. The corners of the workpiece are well machined and there is no wear on the electrode. On the left is the same cavity before machining.
An example of tungsten carbide machining:
Electrodes: copper-tungsten х 3
Dimensions: Ø 5,24 mm, depth 15 mm
Roughness: Ra 0,61 µm
Undersize: 0,12 mm/side
N0-flush Machining
(the part is cut into 2 parts with a Wire-Cut EDM to show the surface quality).
Die-Sinking EDM sample:
An example of electric discharge sinking of a deep, narrow groove cavity without flushing the dielectric fluid (sludge removal due to the pumping effect of ultra-fast electrode movements)