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Electron-beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact.
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 ...
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 ...
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: 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)
The surface of the substrate translates the beam while the metal wire is fed into the molten pool. The deposit solidifies immediately after the electron beam has passed, having sufficient structural strength to support itself. The sequence is repeated in a layer-additive manner to produce a near-net-shape part needing only finish machining.
The basic components of a typical electron-beam processing device include: [1] an electron gun (consisting of a cathode, grid, and anode), used to generate and accelerate the primary beam; and, a magnetic optical (focusing and deflection) system, used for controlling the way in which the electron beam impinges on the material being processed ...
During mid 2020s, Forgemasters started using a new electron beam-based welding process that reduced the timescale involved in the construction of compact nuclear reactors from 150 days to two hours. [40] [41] Sheffield Forgemasters currently has the capacity for pouring the largest single casting (570 tonnes) in Europe. The two forging presses ...