Just clearing out some junk from the workshop and found these paint tins I have heard of “white rust” on galvanised or aluminium. But this seems to be coming from the seam of the paint tin which if anything would be solder or simply a crimped seam. Just curious, any ideas about what it is? I guess even as its masonry paint brick salts are out of the question, unless it’s Sandtex “now with genuine added brick!”
it's either your other half has spilt some fancy salt - or it's galvanic corrosion, two dissimilar metals etc where's the chemist gone ......
Do you know, he never got back to me when I asked if he had a 110v version with a longer lead! Mr. HandyAndy - Really
Fact: The average householder has 17 tins of paint. I think I have double that.. http://www.mrw.co.uk/news/massive-stash-of-paint-cans-in-uk-households/8648352.article
There are white residue problems with water soluble fluxes and many of the causes not related to the flux compositions are the same as for rosin fluxes. The organic water soluble flux itself is more likely to oxidize and decompose than a rosin flux because generally the water soluble organic acids are not as heat stable as rosin acids. Halide (chloride and bromide) salts help reduce oxidation and improve activity but may result in metal salt residue that is not water soluble. Other decomposition products caused by the heat of soldering may also not be removed with water. (This is not an original thought. Therefore I cannot be held to account for any action taken on its use)