How to remove heat marks from mild steel
Grandad2448 | 13/03/2013 11:07:55 |
1 forum posts | Hi i am sure this must have been covered somewhere but i searched and found no answer? I have a mild steel component with a 'rainbow' stain caused by heat, how can i remove this mark? thanks Richard
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Brian Wood | 14/03/2013 08:48:09 |
2742 forum posts 39 photos | Hello Grandad, Try using some used scotchbrite pad that has had the 'keeness' taken off it, red or green pad will do and match the very light abrasion it gives with other markings on the job [such as machining marks etc] to hide its use. The removal of metal is truly miniscule, the heat marking is only molecules thick anyway and it will disappear as if by magic. Brian [another grandad] |
Ian S C | 14/03/2013 11:26:41 |
![]() 7468 forum posts 230 photos | Richard, leave it soaking for a few hours in a solution of citric acid, say a spoon full of powder in a bowl of water, you might find the citric acid in the kitchen, if not the home brew shop is the best place, or the super market would be next, or you can stick it in a bowl with some Coca-Cola. When finished, wash in hot water with a scrubbing brush. Ian S C Edited By Ian S C on 14/03/2013 11:29:10 |
chris stephens | 14/03/2013 13:17:14 |
1049 forum posts 1 photos |
Garryflex rubberised abrasive blocks (in various grades) work very well at cleaning or texture-izing metals. I have been using them for years to fool people into thinking I can get a good finish. chriStephens |
Robbo | 14/03/2013 14:01:43 |
1504 forum posts 142 photos | When the chromed exhaust pipes of our motorcycles got "Blued", we cleaned them with Solvol Autosol polish. This was of course in "the olden days", but Solvol is still available. Phil |
M0BND | 14/03/2013 21:33:28 |
81 forum posts 9 photos | I use phosphoric acid at work to get rid of oxidised blueing from titanium welding (I know it's not good and we do weld this stuff in a bath of argon but still get oxidation so not perfect!!!). It works wonders and would assume this will be ok for steels (ok on 316 st. st. too) - not sure about the carbon content and what it may do to it???
Andy. |
Russell Eberhardt | 15/03/2013 09:08:21 |
![]() 2785 forum posts 87 photos |
Posted by M0BND on 14/03/2013 21:33:28:
I use phosphoric acid at work to get rid of oxidised blueing ISTR that that's the principal ingredient of Jenolite rust remover so should work OK on steel. You can buy phosphoris acid as teak cleaner in garden centres or boat chandlers. Russell. |
Ian S C | 15/03/2013 10:47:40 |
![]() 7468 forum posts 230 photos | You might find stainless steel cleaner powder in the cleaning gear in the house, used for stainless tubs, shower trays etc. Brass wire brush, either hand, or wheel. Ian S C |
Mark P. | 15/03/2013 14:06:59 |
![]() 634 forum posts 9 photos | Metal polish such as solvol or brasso is as good as anything> Mark P. |
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