August 15th, 2010, 11:36
Brown soot on welds?
Hey I'm just curious what causes this brown smoke like layer on my weld is and what causes is it! Is it just from me not cleaning the material before hand, or is it my Gas coverage, or volts and wire speed? It is way worse on 3/16 plate when I run vertical down! It completely covers the weld sometimes to where I can't see the finished piece that well! Anyway some thoughts or ways to prevent it or atleast clean it off would be
greatly appretiated, THANKS
August 15th, 2010 11:36
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August 15th, 2010, 13:32
Re: Brown soot on welds?
A wire brush will remove it right off the bat. . .if I remember correctly from welding class (it's been a while) that's just from not having absolutely clean metal. I get that myself occasionally. . .usually only if I haven't removed the mill scale from my workpieces though.
The brownish stuff that forms at the overlap points of the weld puddles themselves is silicon though and is a normal by-product of welding.