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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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How to remove SS brazing flux ?
I have been using some SS/tooltip brazing flux which works fine for the
item, the trouble is it forms a very tenacious glassy residue. I have been boiling it and a couple of hours seems to remove the flux residue fairly well but was wondering if anyone had ideas about additions such as acids or bases which might help it along. The glassy residue seems very tough and resistant to a chipping hammer, that just locally chips the surface. My sand blaster is currently not operational so thats not an option. Shame it isn''t like aluminium welding flux, go away for an hour and rinse off the remainder that pretty well dissolved itself. |
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I usually quench the part in water when it has cooled to somewhat above
the boiling point of water. Then wire brush the part. Dan |
#3
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In article , David Billington
says... I have been using some SS/tooltip brazing flux which works fine for the item, the trouble is it forms a very tenacious glassy residue. I have been boiling it and a couple of hours seems to remove the flux residue fairly well ... Boiling water. The first thing I do when I go to silver braze an item is to 'put the water on for tea...' Jim -- ================================================== please reply to: JRR(zero) at pkmfgvm4 (dot) vnet (dot) ibm (dot) com ================================================== |
#4
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David Billington wrote: I have been using some SS/tooltip brazing flux which works fine for the item, the trouble is it forms a very tenacious glassy residue. I have been boiling it and a couple of hours seems to remove the flux residue fairly well but was wondering if anyone had ideas about additions such as acids or bases which might help it along. Hot, strong solution of baking soda or washing soda in water, let the part soak about 20-30 minutes, rinse. Mike |
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