[TheForge] NEW - weld question

Sat Apr 26 01:18:00 2003

Mark,
I've followed this thread loosely and I haven't heard anyone ask how thick
the plate is that you'll be welding the 1/4" I-beam to (and I'm assuming
that the I-beam has 1/4" thick flanges where it'll be welded?).  Just a
cautionary note:  here in California, we aren't allowed to run NR-211 on
anything thicker than 1/2" and generally not on any structural members at
all due to seismic restrictions...NR-211 just doesn't have the toughness to
endure the shakings that occasionally occur here.  If I were building a
power hammer (basically a frame that takes a constant beating and shaking
while being operated) I wouldn't consider welding it with NR-211- I'd either
weld it with NR-232 (innershield wire that is able to pass a Charpy test-
but it only comes in larger diameters -.068", .072", 5/64" and needs a
pretty chunky power supply to push it) or stick weld it with E-7018 or
better (8018, 9018, etc.).  The NR-211 welds may hold up...but I'd sure as
hell hate to find out that they didn't the hard way, with pieces flying!
George Watts
Journeyman Ironworker
Local 229, San Diego, CA

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of gblacksmith
Sent: Thursday, April 24, 2003 8:18 PM
To: [email protected]
Subject: Re: [TheForge] NEW - weld question

Mark:  A 155 will weld 1/4" readily.  You will likely use your highest power
setting.  Since flux core requires reversed polarity from gas wire, some
argue that flux cored wire penetrates better.  Test you weld for penetration
by looking for bead discoloration on the side of the plate opposite the
bead.

                                Grant Marcoux
----- Original Message -----
From: "Mark Pesetsky" <[email protected]>
To: <[email protected]>
Sent: Thursday, April 24, 2003 11:31 AM
Subject: [TheForge] NEW - weld question

>
>
>
> I have a LINCOLD Weld-Pak 155 and I was wondering if I could weld some
1/4"
> "I" beam to a mild plate w/o a gas conversion using flux core welding
wire.
> Is this something that could be done with a strong enogh weld for the air
> hammer that I am building?
>
> The specs for the said welder are as follows:
>
>
> Welding Specifications
> Rated CV Output Amps/Volts/Duty Cycle Output Range Wire Feed Speed Range
> (IPM) Wire Feed Speed Range (M/MIN) Solid Wire Size Range Cored Wire Size
> Range
> 208V: 130/20/25%
> 230V: 130/20/30% 30-175A DC 50-400 1.3-10.2 .025-.035" .035-.045"
>
>
> Thanks In Advance
> Mark
>
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