Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse
Patent
1997-02-20
1999-12-21
Ryan, Patrick
Metal fusion bonding
Process
Repairing, restoring, or renewing product for reuse
2282625, 228199, 228155, 228165, 228174, 228103, 228104, B21D 3102
Patent
active
060037555
ABSTRACT:
Aluminum-lithium alloy sheets which are welded together are examined to identify regions requiring repair. A grid is applied to the sheet about the region requiring repair, and the region to be repaired is ground out and rewelded. Residual stresses are relieved by planishing yes to cause localized plastic deformation in the repaired region. The grid is used as a guide to restoring the original dimensions of the sheet in a manner which tends to reduce in-plane shrinkage. The reduced in-plane shrinkage in turn tends to reduce undesired tensile residual stresses. The planishing also tends to work-harden the weld filler.
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Bynum Julian Ervin
Clark Samuel Dwight
Graham Benny Floyd
Johnston Lynda Louise
Renfroe Ronald Brian
Elve M. Alexandra
Fierke T. G.
Lockheed Martin Corp.
Meise W. H.
Ryan Patrick
LandOfFree
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