Electron beam welding method and apparatus using controlled volumetric heating
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United States of America Patent
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Nov 16, 2004
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Nov 16, 2004
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Abstract
Electron beam welding of a thin layer to a substrate is accomplished using controlled volumetric heating of the respective substrate layers, thus minimizing gradients due to heat conduction. Electron beam penetration of the layers and velocity across the surface creates a rapidly translating weld pool within the substrates. The control parameters for the electron beam source are dependent on the heat characteristics of the substrate materials, their thickness, available electron beam power and speed, and desired finished weld geometry. The Peclet number maintained during the process is greater than about 1 and less than about 10.
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