After pickle wash

After pickle wash

This topic has 5 replies, 4 voices, and was last updated 16 May 2012 at 11:55 by julian atkins.

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13 May 2012 at 17:26 #6144
Speedy Builder5
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@speedybuilder5
Problem after sulphuric acid pickle
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13 May 2012 at 17:26 #90746
Speedy Builder5
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@speedybuilder5
Using dilute sulphuric acid as a pickle, and copper comes out nice and pink. However after washing in tap water, it turns golden brown with black stains.

Could this be caused by chlorinated tap water ?
14 May 2012 at 06:34 #90759
Richard Parsons
Participant
@richardparsons61721
It could be. Try a first rinse with deionised water – the stuff that is used in irons.

Rdgs

Dick

Edited By Richard Parsons on 14/05/2012 06:34:38
14 May 2012 at 12:25 #90785
Speedy Builder5
Participant
@speedybuilder5
Just done a pickle and washed in rainwater (not much acid rain where we live). Came out a lot cleaner.
14 May 2012 at 17:23 #90816
DMB
Participant
@dmb
Depending on area of the country, maybe it was all the chalk (Alkali) in water, `fighting` the acid.
16 May 2012 at 11:55 #90933
julian atkins
Participant
@julianatkins58923
my method after pickling is then to scrub the boiler in hot soapy water in the domestic sink. the hot soapy water also helps get rid of heated flux deposits. it issurprising what extra muck comes off after such a wash in hot soapy water. the black stains included.

cheers,

julian

Edited By julian atkins on 16/05/2012 11:56:12
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