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Polishing copper alloy (BeCu)
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I have a current edge surface roughness (Ra) of 2.25 microns
(Delta between high and low spots)
I would also like to radius the corners on this material to create a spherical crowning effect without mechanical polishing.
I would like a surface roughness (Ra) of .5 microns or smoother, I won't rule out nickel plating to help with this process....
What type of etching would you recommend? Electro-etching/polishing? or straight bright dip?
this part will rub against a plastic film layer...and I am trying to extend the life of the plastic...
contact point consists of a 0.5mm radius and it is 0.5mm thick
(thickness runs parallel with the linear movement)
Hobby - San Francisco, California, USA
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Strange hobby, Rob :-)
I don't really understand your description of the component, I'm afraid; but copper can be electropolished and the process can probably meet both your need for smoothing the surface and radiusing the corners more effectively than a chemical dip. Good luck.
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 Ted Mooney, P.E. finishing.com Brick, New Jersey |