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Shimmed electron beam welding process

United States Patent

December 3, 2002
View the Complete Patent at the US Patent & Trademark Office
A modified electron beam welding process effects welding of joints between superalloy materials by inserting a weldable shim in the joint and heating the superalloy materials with an electron beam. The process insures a full penetration of joints with a consistent percentage of filler material and thereby improves fatigue life of the joint by three to four times as compared with the prior art. The process also allows variable shim thickness and joint fit-up gaps to provide increased flexibility for manufacturing when joining complex airfoil structures and the like.
Feng; Ganjiang (Clifton Park, NY), Nowak; Daniel Anthony (Alplaus, NY), Murphy; John Thomas (Niskayuna, NY)
General Electric Company (Schenectady, NY)
09/ 638,072
August 11, 2000
This invention was made with Government support under Contract No. DE-FC21-95MC-31176 awarded by the Department of Energy. The Government has certain rights in this invention.