Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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Can bright dip help in soldering/ brazing on to copper bar?

We braze Silver Cadmium Oxide tip onto copper bars and prior to brazing if the surface free of contamination, then the solder flows freely. I have told to bright dip. Also after we mfg the part we would like the parts to look clean as well as have a longer shelf life i.e not to tarnish or oxidize.Was told to bright dip. Can you advise?

Thank you,

Zul Kassam
Mfg. Of Electrical Contacts - Toronto, Ontario, Canada
2003

What is the easiest and simplest way to bright dip copper or brass bars? This is to stop oxidation or tarnishing.

Zul
mfg of copper contacts - Toronto, Ontario, Canada
2003

An oxidizing agent is needed for bright dipping. Nitric acid is a possibility, but sulfuric acid plus stabilized hydrogen peroxide is very popular for that purpose. After bright dipping the bright appearance can be prolonged by application of sodium benzotriazole ⇦this on eBay or Amazon [affil links] .

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

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