Electric heating – Metal heating – By arc
Patent
1989-08-25
1991-02-12
Albritton, C. L.
Electric heating
Metal heating
By arc
21912184, B23K 2600
Patent
active
049926438
ABSTRACT:
A method and apparatus for enhancing the weldment of a laser welding system is provided. The laser weld plume control device includes a cylindrical body defining an upside-down cone cavity; the upper surface of the body circumscribes the base of the cone cavity, and the vertex of the cone cavity forms an orifice concentrically located with respect to the laser beam and the plume which forms as a result of the welding operation. According to the method of the invention, gas is directed radially inward through inlets in the upper surface of the body into and through channels in the wall of the body and finally through the orifice of the body, and downward onto the surface of the weldment. The gas flow is then converted by the orifice of the device from radial flow to an axisymmetric gas jet flowing away from the weldment surface in a direction perpendicular to the surface and opposite to that of the laser.
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Fuerschbach Phillip W.
Jellison James L.
Keicher David M.
Oberkampf William L.
Albritton C. L.
Chafin James H.
Daniel Anne D.
Moser William R.
United States Department of Energy
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