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7. Summary
Electrical discharge machining (EDM) is a process that removes material by fusion, vaporization and erosion, and is reserved for conductive and semi-conductive materials. It is insensitive to the mechanical characteristics of the materials to be machined. However, its effectiveness depends on the thermal diffusivity of the material. It can therefore be used to machine metals and alloys, hardened steels, refractory metal alloys, metal carbides, certain ceramics and polycrystalline diamond.
After machining, the material presents a thermally-affected layer: structural modifications, presence of residual stresses and microcracks. Resistance to wear and corrosion is increased, while fatigue strength is significantly reduced.
In ripping, the process is characterized by :
material flow rate (from...
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Summary
Bibliography
References
Main EDM machine suppliers and their representatives in France
Routing and drilling shape reproduction machines
AEG Elotherm (D) repr : Val de Loire Machines Outils
AGIE (CH) repr : AGIE France
AMCHEN (GB) repr : Omnitechnics
ARD (ROC) repr : Omnitechnics
Charmilles Technologies (CH) repr : Charmilles Technologies France...
Main machine features
Router shape reproduction machines
Strokes (mm) :
X axis: from 250 to 2,700
Y axis: from 100 to 1,000 (servo axes)
Z axis: from 160 to 700
Maximum part weight: 200 to 20,000 kg
Generator: maximum current from 25 to 800 A
Options :
complementary...
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