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Letter 1015
Avoiding discoloration of motorcyle exhaust
pipes
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The chrome plating on motorcycle exhaust systems discolors to a
dark blue in almost all cases. This is assumed to be due to the heat
effects and oxidation. It has been expressed in some circles that the
bluing is due mainly to the copper underplate and should be
eliminated if the copper was not used and the nickel was applied
directly to the steel. What do the
experts think??
Bob Denney
avionics - Tampa, Florida
September 4, 2009
Dear all,
We have a motor bike modifying unit. Most of our customers object to
silencer and exhaust pipe bluing (those were Ni/Cr plated). After
running over a 1000km, plated silencer colour changed to dark
blue.
We wnat know how to avoid it. Is there any specific process design
for above said parts while plating. Please help us.
M. Ravi shanker
product designer - Chennai, Tamilnadu, India
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