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Posted by mike on March 20, 2007, 6:54 pm
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I need to weld rebar (#6) together; coupling them using welding instead of
rebar clamps/tie's.
What would you recomend using? I have a Hobart 120 with .030 wire; I hope
that will be good enough but I doubt it.
If I have to use my buzz box, which stick should I use? 6011,6013 ; 70XX; I
also have some Eutectic 680...that may well be overkill. But I have it
already.
Thanks
Mike
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Posted by Paul Wilson on March 20, 2007, 9:17 pm
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Most rebar has too much carbon to weld. You can get weldable rebar, but it
is a little costly. I have used a special coupler to connect rebar, but
again, it is very costly. If you are covering in concrete, then just tie
wire.
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Posted by mike on March 21, 2007, 12:10 am
Please log in for more thread options Thanks All!
I will talk to the engineer who designed the building (arched metal
building) to see exactly which tie bars to use. I will not chance welding
it. I have welded rebar to use as a trellis and it worked/welded just fine.
I however do now want to take a chance of welding rebar that is not
technically weldable and take a chance of having it structually unsound.
Thanks
Mike
> Most rebar has too much carbon to weld. You can get weldable rebar, but
> it is a little costly. I have used a special coupler to connect rebar, but
> again, it is very costly. If you are covering in concrete, then just tie
> wire.
>
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Posted by The Nolalu Barn Owl on March 20, 2007, 9:23 pm
Please log in for more thread options wrote:
>I need to weld rebar (#6) together; coupling them using welding instead of
>rebar clamps/tie's.
>What would you recomend using? I have a Hobart 120 with .030 wire; I hope
>that will be good enough but I doubt it.
>If I have to use my buzz box, which stick should I use? 6011,6013 ; 70XX; I
>also have some Eutectic 680...that may well be overkill. But I have it
>already.
>
>Thanks
>Mike
>
Hi Mike,
I had learned to use 7024 because I was told that re-bar is similar to
wrought iron.
Once I used some re-bar for a homemade screw jack and welded it on
with 7018 with good results.
-
Regards
Gordie
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Posted by RoyJ on March 20, 2007, 10:12 pm
Please log in for more thread options Standard rebar runs .40% to .60% carbon, makes welding it chancy. If the
stuff chills fast, it will get as brittle as glass. As in shattering in
your hand when hit a short sample with a hammer. There are weldable
grades of rebar, they are just considerably more expensive since they
get their strength from alloys and not carbon.
One very scary application I've seen: a home built trailer with truss
rods of rebar welded on each side. You never know when that rig will
disassemble.
If you are just trying to hold the bars in place for concrete work, use
the wire ties. If you must weld for concrete work, anything that will
fuse will work. Buzz box with 6011 would be fine. If you want it for
structural support DON'T weld it.
mike wrote:
> I need to weld rebar (#6) together; coupling them using welding instead
> of rebar clamps/tie's.
> What would you recomend using? I have a Hobart 120 with .030 wire; I
> hope that will be good enough but I doubt it.
> If I have to use my buzz box, which stick should I use? 6011,6013 ;
> 70XX; I also have some Eutectic 680...that may well be overkill. But I
> have it already.
>
> Thanks
> Mike
>
>
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> it is a little costly. I have used a special coupler to connect rebar, but
> again, it is very costly. If you are covering in concrete, then just tie
> wire.
>