Summary for copper oxidation inhibitor Discussion
Copper oxidation inhibitor is the main issue in this thread: Vimlesh Jaju asks how to keep cold-rolled copper wires and strips bright after their mirror finish fades and tarnishes, noting that no acid pickling is used in the process. The reply from an unnamed answerer recommends reading up on benzotriazole, saying it can probably be applied by simple immersion. No other chemical systems or detailed process steps are discussed, so the advice is limited but pointed: benzotriazole is suggested as a likely anti-tarnish treatment for copper to help preserve luster. The thread does not compare alternatives or provide a full production method, only a practical starting point for further research and testing.
Q. Dear Sir / Madam,
We are manufacturers of copper wires and strips by cold rolling operation for use in electrical industry and for further insulation. At the time of production, our strips are bright and have a mirror finish. This luster fades away and the surface gradually becomes tarnished. At present we are not using any copper brightener or oxidation inhibitor. (We use continuous cast copper rod electrolytic grade and have no acid picking required in our process). Please suggest the suitable chemical treatment that we should adopt for a long lasting luster and also kindly suggest its method of application.
Thanks,
Vimlesh Jaju
Vimlesh Industries Private Limited – Sonepat, Haryana, India
2002
A. Hi Vimlesh. Please read up on benzotriazole
⇦ on
or
Amazon [affil link]
, which can probably be applied by simple immersion. Good luck.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
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Q. I am planning to start the wire drawing setup for copper wire, which type of oxidation inhibitor should I use. Please suggest me. ⇦ Answer?
Thanks.
Regards,
Neetu Mahaldar
– Gurgaon, Haryana, India
2005
A. Hi
As a good background to the chemistry of copper oxidation/tarnishing please see….
https://materion.com/-/media/files/pdfs/alloy/technical-papers/ap0046—corrosion-inhibition.pdf
This covers Benzotriazole but more importantly I think it gives a good overview on the mechanisms of copper corrosion and tarnishing.
I know this is an old thread but we all stumble into old threads via Google so I believe it is still worth posting.
Jon Light
– Wexford, Ireland
October 11, 2017