Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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How do I go about lacquering brass in a machine center setting?
1998
Q. I am a research and development manager for a small brass machining center which produces fine brass hardware. I am trying to arm myself with as much information as possible about "EXACTLY" what it would take to start lacquering some of our products. I am looking for information on start up equipment necessary, processes involved, safety information, environmental considerations, and any other information anyone who has knowledge on this matter might have. I am also interested to know if there is any such thing as gold tinted lacquer. I would welcome any contact from a private individual or manufacturer of products I would need to do my own lacquering.
David R [last name deleted for privacy by Editor]Ed. note: Sorry, this RFQ is old & outdated, so contact info is no longer available. However, if you feel that something technical should be said in reply, please post it; no public commercial suggestions please ( huh? why?)
A. The Canning Handbook [on eBay, Amazon, AbeBooks affil links] has a chapter devoted to Lacquers and Lacquering which could be a valuable reference for your project. It is a few years old, so new products may be available.
Tom Pullizzi
Falls Township, Pennsylvania
1997
adv.
A. Hi David. The parts must be polished and well cleaned before lacquering, and you will probably find that the technology still involves multiple thin coats rather than once and done.
Tinted lacquers are available from the major lacquer suppliers like G.J. Nikolas [a finishing.com supporting advertiser]. Good luck.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
December 5, 2012
Cleaner/Degreaser for lacquering brass parts
Q. Hi,
I currently use TCE (Trichloroethylene) as a cleaner and degreaser in an ultrasound machine to clean our brass parts before spraying them with both acrylic as well as PU based lacquer. TCE being harmful and a bit expensive, I am looking for a cheaper and better (environment friendly) cleaner degreaser. Any help will be appreciated.
Thanks,
Hitesh Soodfinishing - Delhi, India
2003
A. Hello, Hitesh. N-propyl bromide is considered more environmentally friendly, and is pretty close to being a drop-in replacement, but it is significantly more expensive than TCE rather than cheaper.
People will probably tell you that you need to switch to aqueous based cleaners, and you probably do. Unfortunately, your cleaning costs are on the way up, not down :-(
Sorry.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2003
A. It seems as if I am always agreeing with Ted; however, a little technical advice. Ultrasonic cleaning systems work a lot more aggressive or better with water-based chemicals. Probably you will need an acidic compound. You might want to consult Sonicor Inc. They make some good products.
AF Kenton
retired business owner - Hatboro, Pennsylvania
2003
Thanks for the input guys. I would also prefer to move to water based chemicals; TCE is a pain to work with. I would ideally prefer a compound which I can use in my ultrasonic system as a washing/degreasing for my pieces before lacquer, nickel plating as well as powder coating.
Thanks,
Hitesh Soodfinishing - Delhi, India
2003
A. Good luck again. You probably know this, but just so a reader doesn't draw the wrong inference from this thread, nickel plating will require a different and more difficult cleaning sequence involving the need for alkaline electrocleaning.
Regards,
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
December 6, 2012
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