Final report of an investigation into the MIG spot-welding of aluminium alloy sheet (IM-FM-044)

Internal Memorandum IMFM 39 (Ref. 1) dealt with the background to the investigation, and detailed progress achieved at an interim stage. It concluded that, although the minimum shear strength requirements had been met for each combination of top and bottom sheet thicknesses tested, it was felt that substantial improvements, in...