Re: while I'm at it--electrolysis and flash rust

Posted by Mikebr5 on June 23, 2015 at 12:07:58 from (74.38.127.236):

In Reply to: while I'm at it--electrolysis and flash rust posted by Lamont in NC on June 23, 2015 at 09:06:03:

Oxyacetylene torch set to a slightly oxidizing flame, sweep it back and forth over the object slowly enough for a slight color change, not long enough to warp or distort.

Sometimes this is appropriate, sometimes it's not. Depends on the piece and where it is.

Anything ferrous that comes out of a corrosive bath (including any impure water) gets dried immediately- fan, hot air, blown dry... If the metal is cold you have to hold the heat on long enough to get past the combustion products (water) condensing on it.

I used to own a weld/machine shop and flash rust was "not allowed." Give it a quick oxidation layer that is not the red rust and you're good until primer and paint day.

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