[TheForge] Shrinking Stainless Sheet metal

[mpaietta]

       If you purge the back with argon using a purge plate
then your welds will    come out great.

   Martin
   
> Stainless has a 25% higher thermal expansion rate than
> mild steel.   This is why it is such a pita to work when
> you are welding  it in   thinner sections it will warp at
> the drop of a hat it is also a poor   thermal conductor,
> much worse than mild so the heating is localized   more
> than with the mild and the thermal expansion is acting on
> a   smaller area resulting in greater warping.  If
>    possible keep beads   short and move to a different
area
> to do next bead and keep working   different areas around
> whole perimeter till the complete weld is done   to keep
> from getting too much heat in one area. This will help but
> it   is still likely to warp.
> 
> Jim
    
   > 
> On Jan 17, 2007, at 1:38 PM, Ries Niemi wrote:
> 
> > 
> >  Theoretically, it should move much like mild steel, but
> >  its so damn   hard to get to move, ever, that it seems
> to be harder to heat shrink. > 
> >  ries
> 
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