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Best material for Heating & Cooling Coils for Acid Tin Bath?

Q. I am doing Acid tin plating. To cool the solution to room temp can I know what is the coil that can be used for the same?

Mahesh M K
plating shop - Bangalore, Karnataka, India
April 18, 2008

A. Hi Mahesh,

Wot acids, wot temperature ?

You've got many choices ....
TFE (expensive),
PVDF (resistant to all acids but doesn't like high pH),
Stainless (metals are best for heat transfer).

Freeman Newton [deceased]
(It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
April 18, 2008

Q. I am using sulfuric acid tin bath (conc. 10 % ) along with stannous sulfate and additives for bright finish plating.

Can we coat the titanium tubes with teflon and use it, or SS 316L, or can we use Teflon tubes for cooling the solution?

Regards,

M K Mahesh [returning]
- Bangalore, Karnataka, India
May 5, 2008

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Q. What material should be used for making coil for chilling plant use for keeping temperature low or maintain in acid tin plating which doesn't contaminate or react with tin plating solution?

RAJIV kalyani
- Mumbai/ Maharashtra India
October 16, 2019