Curated with aloha by
Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
Thread 378/09
Cleaning of brass hollow tube
I am doing satin nickel plating on hollow brass tubes. before plating buffing dust is present on piece, that's why I am nitric acid dipping. If concentration of acid is high white patches form on piece & if lower concentration acid is used it can't remove all buffing dust. So please tell me exact mixture of acid with water or any composition add in acid.
Kunjan Vazearihant electroplaters - Mumbai, Maharashtra, India
2005
publicly reply to Kunjan Vaze
No, no, no. Where on earth did you hear of using nitric acid as a buffing compound remover? Buffing compound is removed with alkaline cleaners, preferably assisted by ultrasonics, not with acid.
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
2005
publicly reply to Ted Mooney
2005
Dear Sir,
You want to dissolve the tube or remove the buffing compounds.
Nitric acid will do etching in the brass.
You requirelylitic cleaning,ultrasonic cleaning,etc.
If the job is small and you resources scanty use kerosene
oil and then clean piece with saw dust.
This will also work as de-greaser.
YOU BASICALLY REQUIRE A DEGREASER.
- Jaipur, Rajasthan, India
publicly reply to Amit Pabuwal
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