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Electrophoretic coating of lead frames





2003

I am currently doing some research on electrophoretic coatings on lead frames. Can anyone tell me how to get a certain thickness of coating? Tell me the stages?

Samuel Wong
- Kuala Lampur, Malaysia




Hi Samuel

Electrophoretic coatings are known for how thin they can be compared to organic coatings deposited with solvents or by powder coating. Well under one thousandth of an inch is common. The process requires the same number of pretreatment stages as any other coating method (depends on the substrate material and what type of pretreatment you want to use), plus the e-coat tank, recovery rinse, final rinses. E-coats are sometimes post dyed, and sometimes topcoated with polyurethanes or other materials. It may be more a question of designing for what you'd like the process to deliver, rather than what properties are inherent.

Regards,

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


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