Mitsubishi MOTORS Lancer Evolution VIII 2003, Technical Information Manual

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ALUMINUM PANEL
WELDED PANEL REPLACEMENT 3-40
ALUMINUM PANEL REPAIR
M4030000700014
Items to be noted when working on sheet metal
1. Main differences of sheet metal work
2. If strong impact is given under low temperature, its strength
becomes low and may be cracked.
3. The springback is large due to high elastic modules.
4. The thermal effect is large due to high heat conductivity.
5. If excessively heated, the strength will be deteriorated.
Further heating will cause melting without discoloration.
[Appropriate heating temperature is approximately 250
°
C
(482
°
F)]
6. Because the material is soft, choose an abrasive carefully.
Wear a dustproof mask and safety glasses, because ground
particle is light and tends to float in the air.
7. If a disk sander is strongly pressed against the aluminum
plate, its surface will exfoliate and cause loading of the disk
sander.
8. Because the disk sander with the loading will damage the
aluminum panel, replace it with a new one as soon as
possible.
9. General tools and sanding tools shall not be shared for both
aluminum and steel panels. (Iron powder remaining on the
surface may cause electric corrosion with a different type of
metal.)
10.During MIG welding, protect things in perimeter because the
spatters are hard to see, and spread father than expected.
WORK
DESCRIPTION ALUMINUM
PANEL STEEL SHEET
Hammering Mallet or plastic
hammer Sheet metal hammer
Washer welding Not possible Possible
Gas welding Not good
workability but
possible Possible
Spot welding Not possible Possible
MIG welding Possible by a
welding machine
for aluminum and
argon gas Possible by a general
welding machine and
CO
2
gas
MATERIAL MELTING TEMPERATURE
ALUMINUM 475 to 660
°
C (887 to 1220
°
F)
STEEL SHEET 1500 to 2500
°
C (2732 to 4532
°
F)