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| Vehicle
& Component Manufacturers |
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The effectiveness for corrosion protection on a vehicle
was put to test with the following experiment :
Vehicle |
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(1A)
A Corrosion coupon was placed in front door
showing a sachet
of VCI product mounted on a
panel at the lower left
side. |
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Vehicle |
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(1B)
Corrosion coupon in front door - after an
installation period of
317 days. |
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Vehicle |
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(2A)
A Corrosion coupon placed in rear door,
without any VCI corrosion protection. |
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Vehicle |
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(2B)
Corrosion coupon in rear door - after an
installation
period of 317 days. |
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Vehicle |
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(3)
Visual inspection of the coupons shows serious
and substantial
corrosion, of the unprotected
coupon. There
are only marks on the
protected coupon,
but no visual metal loss. |
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Every
tack weld or crimp in the panel or any unprotected metal is
at risk of serious corrosion, including any holes cut or fasteners
installed which were not passivated or treated on installation.
Noticeable, corrosion starts inside the panels and is only seen
when the outer paint surfaces break up. Corrosion protection
sachets installed in the door panels and in other hollow sections
will greatly reduce corrosion and will increase the life of
the vehicle.
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Also see the following case studies:
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