Removel of material by using electron beam and electrical field.
ELECTRON BEAM MACHINING :
 A high velocity stream of electrons is focused on the workpiece surface to remove material by melting and vaporization
 Electron beam gun accelerates a stream of electrons to ~3/4 c and focused through an electromagnetic lens
 Kinetic energy of beam converted to thermal energy of extremely high density, melting or vaporizing material in a very localized area
 EBM must be carried out in a vacuum
MATERIAL PROCESSING BY ELECTRON BEAM:
 High intensity of electron beam energy (109 W/cm2),
 High speed of electrons (1.6 108 m/s),
 Small surface of impact (0,003 mm2),
PRINCIPLE OF MACHINING BY ELECTRON BEAM :
Kinetic energy transmission in the impact to thermal energy.
In the short time (ms) the small volume of material evaporated, steams are shoot out of becoming crater remainder of melting.
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