[TheForge] Welding 5160

Sun Aug 24 00:09:00 2003

Ralph:  I misread your post.....if it is 5160, it is medium carbon and was
likely heat treated.  If so, you may have a soft spot at the joint.  You can
always heat treat the whole piece, if need be....just quench in oil vs.
water.
----- Original Message ----- 
From: "gblacksmith" <[email protected]>
To: <[email protected]>
Sent: Saturday, August 23, 2003 8:56 PM
Subject: Re: [TheForge] Welding 5160


> Ralph:  There are a number of welding rods that would work well for that
> application.  I have made similar repairs on shock-loaded members and
> usually what I did was to verify the needed  LOA of the piece and bevel
each
> side of the joint steeply, with ridge (or gap) left in the middle that
> guaranteed the LOA.   Then preheat the surfaces to be joined.
>
> If you need to clamp the pieces firmly, clamp them in the "V" of a piece
of
> angle-iron at the needed LOA.  This acts as a splint that holds the pieces
> at a predetermined position.
>
>   Weld by first tacking the piece and then filling the bevels so the beads
> are just above the original surfaces.  Make sure that the filling beads
are
> run in a connecting line to the joined ends of the original piece.  I
would
> suspect the tension arms are of carbon steel, probably in the 40 pt.
range,
> like axles.
>
>  I don't know if these arms are heat-treated, so the welding will undo the
> heat treat near the joint.  Before welding, check with the edge of a file.
> If a good file barely bites and makes a high-pitched scraping sound, the
> metal is likely heat treated.  If the file bites easily with a lower
pitched
> sound, the piece is likely not heat treated.   just my cents
>
> Grant
> ----- Original Message ----- 
> From: "Ralph Sproul" <[email protected]>
> To: <[email protected]>
> Sent: Saturday, August 23, 2003 6:33 PM
> Subject: [TheForge] Welding 5160
>
>
> >     Here's a question I should have asked earlier..........  Any
comments
> on
> > welding 5160?
> >
> >         Today I welded up a broken tension arm from a #4 Beaudry Power
> > hammer.  We'll see if it holds together when the hammer goes back into
use
> > on Monday(then I'll really know if my plan was a good one or not).   :-)
> >
> >         I used a particular method I thought might work, and I wonder
what
> > others would say on how to do it..........
> >
> > Ralph
> >
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