Mitsubishi MOTORS Lancer Evolution 2008, Body Repair Manual

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WELDING
TSB Revision
BASE OF BODY REPAIR
9-7
GALVANIZED STEEL PLATE (SECC)
CAUTION
If the total thickness of the plates at the weld
places is 3 mm (0.12 inch) or more, use plug
welding, because spot welding will not provide
sufficient welded strength.
NOTE: *: For welding steel plates of different thicknesses, conform to the welding conditions for the thinner
plate.
.
USING A TEST PIECE TO CHECK NUGGET
FORMATION
Weld a test piece of the same type of steel plate as the panels
to be welded. Try to twist the piece, and also check the nugget
diameter.
Using the weld point as an axis, apply force in the direction indi-
cated by the arrows in the illustration, and determine the
strength of the weld.
1. Good (The welded part remains at one side).
2. and 3.
The weld conditions are unsatisfactory; adjust the welding
current, the current application time, and/or the applied
pressure.
.
Panel
thickness*
[mm (in)] Number of repair weld (percentage of factory weld)
Safety
equipment
area
0.9 (0.035 or
less 100% Same number as factory welds
1.0 (0.04) 200% Maintain pitch of at least 18 mm (0.71 inch); if not possible, plug weld.
1.2 (0.047) or
more 100% Same number as factory welds; plug welding
Other area
0.9 (0.035) or
less 100% Same number as factory welds
1.0 (0.04) 140% Maintain pitch of at least 18 mm (0.71 inch); if not possible, plug weld.
1.2 (0.047) or
more 100% Same number as factory welds; plug welding
AB200032AB
WELD POINT
1
2
3