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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Using ammonia in pickling solution
Dear Sir,
I'm an engineer working in field of industrial hydraulics. After high pressure piping execution its a must to finish inside the pipes in some steps including mechanical cleaning , chemical cleaning and oil flushing.
Recently, I saw a procedure for chemical cleaning using 3% citric acid
⇦this on
eBay
or
Amazon [affil links] solution, but increasing ph value up to 3.5 by adding ammonia
⇦this on
eBay or
Amazon [affil links] before circulating in the system.
Now here is my question! why adding ammonia. if ammonia is added only for controlling ph why they don't reduce citric acid percentage?
Regards,
hydraulic engineer - TEHRAN, IRAN
November 21, 2008
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