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.
Depth

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