ALUMINUM PANEL
WELDED PANEL REPLACEMENT
3-41
Correction of uneven surface
.
Basically, the same as the steel panel. Work with consideration
of characteristics of the aluminum panel.
1. Correction of metal sheet:
CAUTION
• Heat-up the panel until you feel heat with a keplar work
glove on the reverse side of the panel.
• Keep moving a burner evenly to prevent one point is
heated.
(1) Heat with the burner.
CAUTION
Try to prevent stretch and hardening, and not to leave any
hammer dent.
(2) Because hammering may stretch the panel, use a mallet
or plastic hammer.
2. Distortion check: Grind the surface with 80 to 120-grit
sandpaper and then check for distortion.
CAUTION
• The surface shall be heated to approximately 250°C
(482°F) when correcting distortion.
• Care must be taken when heating the panel because it
can melt without discoloration.
• Cover the perimeter area with a wet rag or the like to
prevent temperature increase and distortion.
• Do not use a draw hammer designed for steel sheets
because it may cause the panel crack.
3. Straightening: Remove distortion by the draw correction
procedure with a flattening hammer and a burner.
AB202119
AB202120
AB202113
AB202116
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