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cleaning stainless steel

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Roger Hart12/08/2017 09:53:18
87 forum posts
18 photos

Been doing some silver soldering of stainless and this has left a greyish film over the work. I will probably have to clean up using W&Dry but I wondered if there was any easyish way to clean up stainless. The usual sulphuric pickle doesn't work and neither does citric. I had read that HF is good for this, but not nice stuff and not available in most ironmongers....

Nick_G12/08/2017 10:04:53
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1808 forum posts
745 photos

.

I do know that motorbike guys sometimes will use Harpic cleaner on stainless exhaust downpipes. Think this has hyrochloric acid content.

Nick

Speedy Builder512/08/2017 12:22:19
1257 forum posts
91 photos

Phosphoric acid is the flux for soft soldering - maybe it would be a good pickle acid ?? Jenolite rust remover is mainly phosphoric acid.
BobH

Frances IoM12/08/2017 12:34:49
428 forum posts
20 photos
Phosphoric acid can also be found quite cheaply as a limescale remover - the SS cleaners sold for kitchen use seem to contain phosphoric acid + detergents.
Monoman12/08/2017 12:40:47
22 forum posts
3 photos

Jenolite is NOT phosphoric but is Lactic acid.

mark smith 2012/08/2017 12:53:54
492 forum posts
271 photos

If the object is small citric acid electrolysis works.

martin perman12/08/2017 13:36:49
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1023 forum posts
27 photos

Our local fabricating shop works only in stainless, they use impregnated pencil rubbers, my description, so that they can restore the brushed surface back to the original after welding etc.

Martin P

Michael Gilligan12/08/2017 13:55:14
10000 forum posts
435 photos
Posted by Monoman on 12/08/2017 12:40:47:

Jenolite is NOT phosphoric but is Lactic acid.

.

With apologies to all those who thought they had seen the last of me

... This needs to be said:

Please read the MSDS

**LINK**

https://www.jenolite.net/pdf/jeolite-jelly-msds.pdf

MichaelG.

Neil Wyatt12/08/2017 14:15:54
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Moderator
11273 forum posts
525 photos
62 articles

Hello Michael

roy entwistle12/08/2017 14:23:11
699 forum posts

Michael Welcome back

Roy

ega12/08/2017 14:23:26
668 forum posts
74 photos

Michael Gilligan:

No apology needed in my case - I have missed your input.

I thought from Monoman's post that this was another case of specification creep (you may remember our discussion about Pear's soap). It may be nostalgia but my recent purchase of Jenolite seems less effective than before.

What is the difference between ortho and ordinary acid?

duncan webster12/08/2017 14:44:37
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1173 forum posts
21 photos

Dr Pepper's soft drink contains phosphoric acid. It's pretty good at rotting your teeth (not mine never touch the stuff), not tried it for cleaning SS. Probably too weak

Edited By duncan webster on 12/08/2017 14:45:14

dcosta12/08/2017 14:58:45
425 forum posts
203 photos

Hello Michael, welcome back.

Dias Costa

Michael Gilligan12/08/2017 15:10:19
10000 forum posts
435 photos
Posted by ega on 12/08/2017 14:23:26:

What is the difference between ortho and ordinary acid?

.

Orthophosphoric acid is phosphoric acid 'as we know it'

Wikipedia will explain much better than I can.

**LINK**

https://en.m.wikipedia.org/wiki/Phosphoric_acid

MichaelG.

Michael Gilligan12/08/2017 15:17:40
10000 forum posts
435 photos
Posted by ega on 12/08/2017 14:23:26:

I thought from Monoman's post that this was another case of specification creep (you may remember our discussion about Pear's soap). It may be nostalgia but my recent purchase of Jenolite seems less effective than before.

.

You may well be right surprise

I now presume that Monoman must be familiar with this version:

**LINK**

https://www.jenolite.net/pdf/rust-converter-msds.pdf

MichaelG.

Nick_G12/08/2017 15:19:33
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1808 forum posts
745 photos
Posted by Michael Gilligan on 12/08/2017 13:55:14:

.

With apologies to all those who thought they had seen the last of me

MichaelG.

.

OMG ......................... He's back.! surprisedevilsurprise

Normal service can now be resumed. yessmiley

Nick

Nicholas Farr12/08/2017 17:17:59
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1590 forum posts
813 photos

Hi MichaelG, glad to see you posting your valued knowledge and finding links no one else seems too again. yes

Regards Nick.

Speedy Builder512/08/2017 17:55:53
1257 forum posts
91 photos

Ah, page 4 of Michael Gs link

ORTHOPHOSPHORIC ACID - That would be the Lactic Acid Monoman was talking about ??
BobH

Martin Connelly12/08/2017 20:28:53
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552 forum posts
53 photos

Martin P, are you referring to Garryflex blocks?

Martin C

martin perman12/08/2017 20:32:52
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1023 forum posts
27 photos

Martin C,

Until you gave them a name I hadn't a clue hence Abrasive pencil rubbers, yes they are the ones.

Martin P

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