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Letter 35086
Plating defect after crimping
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Sir,
We have a common problem during the crimping of one of our
components.The component is EN1A(yellow passivation)upto 13
microns.We notice a plating peel off at the crimped portion.The tool
used for the crimping was highly polished and then checked but the
improvement was not good enough.Could u please suggest us the weather
the white passsivation or bleech passivation will be the
solution.
The thickness at the crimping portion is 1 mm.
regards,
S.S.venkata raghavan
Engineering (Autoproducts) - Coimbatore
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Hello Mr Venkat;
There are certain parameters which if mantained well should give you
a ductile zinc deposit whilst plating. For this we should know which
process was used for plating. Also if crimping can you not think
about a lower thickness between 5 - 8 microns?
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Khozema
Vahanwala
Saify Ind
Bangalore, Karnataka, India
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Mr Venkat,
Is the zinc peeling off the base metal.
Or is the chromate peeling off the zinc ??
Confirm this aspect visually first.
Solutions abound after this identification.
Which process do you use to plate zinc.
Alkaline. acid. cyanide ??
What process sequence do you follow ?
With replies to these queries I could help .
Regards
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