Advice on silver soldering

[Ian WarburtonParticipant @ianwarburton39845]

Can anyone please advise me on what concentration of Citric Acid I should use for pickling a Butch smoke box, before and after silver soldering ?.

 

Thanks.

Edited By Warbie on 02/04/2011 14:51:45

[Ian WarburtonParticipant @ianwarburton39845]

[Hugh GilhespieParticipant @hughgilhespie56163]

Hi Warbie,

 

Concentration of the citric acid isn’t critical. I use about 10% (in old money 1 pound per gallon or 100 g per litre ) which seems to work OK.

 

Regards, Hugh

 

 

[methusalaParticipant @methusala]

Hello Warbie,

 

Pickling large items like boilers with citric acid takes a little while

and exhausts quite quickly. the chemical we use at work is Sodium Bi- Sulphate

and its designated use is for lowering the ph values in swimming pools.

The chemical is virtually sulphuric acid(apart from a few electrons) and

gases given off when pickling should be viewed as sulphuric acid.

The chemical should be mixed with 28g per100g of water, but we found that

this is not critical. It is nowhere near as volatile as sulphuric acid.I wouldn’t

recommend that you place your hand in the pickle, but it will sting a bit if it

comes in contact with an open wound, you only need to immerse the job

in the pickle for about 20 minutes. You can get the pickle from any

swimming pool supplies shop, hopefully there should be one

near by and it is not all that expensive.

hope this helps.

Colin.

 

[methusalaParticipant @methusala]

Hello again Warbie,

I forgot to say that you should only use the ph minus and

not the ph plus solution, It doesn’t work

Colin.

[Ian WarburtonParticipant @ianwarburton39845]

Thanks for the advice folks, much appreiciated.

 

Ian.

 

P.S you’ll probably notice that i’ve changed my user name. As a newbie, i only stuck in Warbie to see if i’d set my profile up correctly.

Edited By Ian Warburton on 03/04/2011 13:09:28

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