Product category:
Laser and electron beam welding
News Release from: Steigerwald Strahltechnik | Subject: Electron Beam Welding
Edited by the Manufacturingtalk Editorial
Team on 02 May 2003
EBW offers versatile fusion welding
process
Only the Electron Beam Welding technology with beam powers up to 60kW offer a fusion process which is able to cover a wide range of welding requirements within operating economies.
Only the Electron Beam Welding (EBW) technology with beam powers up to 60kW offer a fusion process which is able to cover a wide range of welding requirements within operating economies The EBW is a reliable and an already established technology within numerous industries
This article was originally published on Manufacturingtalk on 3 Dec 2001 at 8.00am (UK)
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EBW at Vacuum - the traditional electron beam welding process operates under vacuum condition.
One or several work-pieces can be manipulated below the electron beam in an evacuated working chamber.
EBW in atmosphere; Non-Vacuum EBW (NV EBW) - the working chamber is replaced by an orifice system that ejects the electron beam into the atmosphere.
Both the work-piece and the electron beam generator can be manipulated simultaneous.
This permits three-dimensional welding.
Advantages of the NV EBW - processing at very high welding speeds and the elimination of the evacuation time.
The diffused and high-energy electron beam permits the fusion of small gap variations without using of filler material and is insensitive to working distance variations.
Low heat input from the electron beam minimises thermal distortion of the work-piece.
The total efficiency of a NV EBW machine is above 60 %.
For all these reasons, the NV EBW is a very economical solution for mass production.
For NV EBW processing there are electron beam generators with 25 kW beam power available.
Industrial Application of the NV EBW - during the 1990's a new design concept, led to changes in design of instrument panel beams; originally made of spot-welded steel the new design employed aluminium with a weight reduction of 40 %.
The new design is made of two AlMg3 shells with a sheet thickness of 2.5mm and flange joint of 1400mm on both sides.
Exacting requirements such as high speed welding production rates, low energy input for minimal thermal distortion and savings in filler material has led to the introduction of non-vacuum EBW; NV EBW.
To achieve a production rate of 500,000 instrument panels a year - two welds on each part, Steigerwald Strahltechnik developed the NV EB welding system EBONOVA2.1-G300DSS-TWIN.
Steigerwald Strahltechnik has already delivered five NV EB welder to Alcan, Benteler and VW.
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