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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Cooling coil material
Q. Dear Sirs,
I am going to install a new cooling coil for our electroforming bath of nickel which is for manufacturing optical disc stampers. PH is around 2.5 to 4, temperature 35 to 70 °C, nickel sulfamate 400 to 500 g/l, boric acid 40 to 60 g/l.
What is the cheapest and safe material to make the coil?
Thanks for your helps.
Eric Lee- HK, SAR of China
2001
A. I will only use Titanium coils.
Payal Mag- Charlotte, North Carolina
2001
A. Titanium is the only way to go. It may not be the cheapest but it's definitely the best. Call it, money well spent....Good Luck.
Randy A. MattsonSkills Incorporated - Seattle, Washington, U.S.A.
2001
A. Eric,
You had asked about the CHEAPEST and a safe material to make cooling coils ... so I didn't think of replying until I saw the answers from the cognescenti
Sure seems that Titanium is the way to go BUT expensive!
Have you thought about the PVDF plastic cooling coils? A.OK to around l40 degr. C, superb in acids, not so good in high pH. Standard cooling coils (G.F.Fischer?) are made in PP (not recommended in this instance because of the temperature) and PVDF which some people call Kynar. One drawback is that by being plastic, their heat transfer is not as fast as a metal. But pricewise possibly 1/2 the price of Titanium.
Food for thought, anyhow.
CHEERS
Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
2001
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