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Posted by Leo Lichtman on January 9, 2008, 8:16 pm
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"Bob La Londe" <(clip) I know that HVAC guys will often wrap a valve with
wet rags to protect its
> guts while soldering a refrigerant line into the unit, but while a torch
> has to get pretty darn hot to melt silver solder, I imagine its nowhere
> near as hot as the metal at the point of an arc when mig or tig welding.
^^^^^^^^^^^^^^^^^^^^^^
Yeah, but a MIG or TIG can be used in very short bursts, to keep the heat
down in the surrounding metal. Silver soldering HAS to be done by heating
the whole area.
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> has to get pretty darn hot to melt silver solder, I imagine its nowhere
> near as hot as the metal at the point of an arc when mig or tig welding.