Electric heating – Metal heating – By arc
Reexamination Certificate
2005-03-01
2005-03-01
Shaw, Clifford C. (Department: 1725)
Electric heating
Metal heating
By arc
C228S230000
Reexamination Certificate
active
06861617
ABSTRACT:
A method to minimize the distortion, such as buckling, caused in the welding of thin plate by utilizing transient thermal tensioning to induce areas of residual tensile stress. Distortion of such welded plates after stiffeners are welded to the plates is due to large areas of unsupported residual compressive stress following the tensile stress that is induced along the weld lines by the welding of the stiffeners. Application of transient thermal tensioning by moving heat sources at the time of welding of the stiffeners induces areas of residual tensile stress that minimize the tendency of the plates to buckle. Multiple heat sources of variable intensity may be utilized, and multiple stiffeners may be welded to a single panel by the method. Minimization of distortion improves the function and appearance of the finished plates and minimizes post-welding repairs.
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Dull Randal Martin
Dydo James R.
Russell James Joseph
Shanghvi Janak
Dawsey David J.
Edison Welding Institute, Inc.
Gallagher Michael J.
Gallagher & Dawsey Co. L.P.
Shaw Clifford C.
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