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Posted by Randy Zimmerman on September 29, 2007, 8:43 am
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Almost always the weld alloy is stronger than the parent metal for
steels. Not so for aluminum alloys.
Preheating or post heating is common on heavy sections ( over 1 inch)of
steel to remove built up stresses in the weldment. Thin wall tubing usually
does not require such treatment. These post and preheats are more along the
lines of normalizing rather than annealing
Statements like that claim impress lay people. It is like stating that
you use steel cables instead of elastic material for your suspenders....
Just in case your pants might fall down ;')) Now we have to ask how the
suspenders are attached to your pants. Are they clipped or attached to
buttons? Are the buttons large buttons or small buttons? What kind of
thread did you use on the buttons?
The situation of strength, built in stresses, and fatigue strength all play
into the question.
Randy
> When welding metal, there are always heat affected zones, right?
>
> Is there any way to treat these heat affected zones?
>
> Would annealing the metal after welding help prevent brittleness?
>
>
> Is it possible for the welded areas to be even stronger than the base
> metal?
> There's a show in NatGeo about Harley-Davidsons factory and they claim
> that the welded areas in the bike frames are even stronger than the
> base metal.
>
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>
> Is there any way to treat these heat affected zones?
>
> Would annealing the metal after welding help prevent brittleness?
>
>
> Is it possible for the welded areas to be even stronger than the base
> metal?
> There's a show in NatGeo about Harley-Davidsons factory and they claim
> that the welded areas in the bike frames are even stronger than the
> base metal.
>