Principle :

In a VACUUM CHAMBER an accelerating voltage of about 20 to 150 kV projects the electrons at a very high speed to an impact point : the freed cinetical energy causes the fusion of the metal without addition of any additional metal.
Welding performed in vacuum : absence of oxidation.
" Machine " processing : perfect reliability and repeatibility of the welds from one part to the other without intervention of the operator.
Proceeding well adapted for Quality Inspection in production.
Very high specific power : 10 8 W/cm2.

Characteristics of the welds :

Thin welds / melted zone and heat affected zone with parallel edges.
	Little shrinkage of the weld with minimum deformation. Welding of thick materials in a single pass : - Steel up to 200 mm, - Aluminum up to 300 mm. High welding speed : up to 15 m/mn. Welding of metals difficult to weld : refractory metals, faintly allied, with high thermal conductivity. Welding of Copper, " Super alloys ", Tantalum, Titanium, Molybdenum etc…
It is possible to obtain without retouch a precision part by welding together two precision parts.

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