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Sciaky begins research on a new manufacturing process called Electron Beam Free Form Fabrication (EBFFF) in 2000.. Single VME x86 board W20x0 weld control system In 2007, Sciaky earns a contract with the National Aeronautics and Space Administration's (NASA) Langley Research Center [10] to create a new EB gun system in the U.S. incorporating the EBFFF system and tested on a microgravity ...
Since the beginning of electron-beam welding on an industrial scale at the end of the 1950s, countless electron-beam welders have been designed and are being used worldwide. These welders feature working vacuum chambers ranging from a few liters up to hundreds of cubic meters, with electron guns carrying power of up to 100 kW.
Electron-beam welding was developed by the German physicist Karl-Heinz Steigerwald in 1949, [1] who was at the time working on various electron-beam applications. Steigerwald conceived and developed the first practical electron-beam welding machine, which began operation in 1958. [ 2 ]
Electron beam welding: 51 511: EBW Deep penetration, fast, high equipment cost Electroslag welding: 72: ESW Welds thick workpieces quickly, vertical position, steel only, continuous consumable electrode Heavy plate fabrication, construction, shipbuilding Flow welding (previously cast welding)
Like electron-beam welding (EBW), laser beam welding has high power density (on the order of 1 MW/cm 2) resulting in small heat-affected zones and high heating and cooling rates. The spot size of the laser can vary between 0.2 mm and 13 mm, though only smaller sizes are used for welding.
Another approach is to use an electron beam to melt welding wire onto a surface to build up a part. [15] This is similar to the common 3D printing process of fused deposition modeling, but with metal, rather than plastics. With this process, an electron-beam gun provides the energy source used for melting metallic feedstock, which is typically ...
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