[TheForge] NEW - weld question

Fri Apr 25 07:28:00 2003

        I don't believe you'll find straight polarity to penetrate as well
as reverse polarity at all.  I'd have to argue that they are totally wrong
(those that say flux cored penetrates better than gas wire).
        When your stating the wire runs reverse of what it should be for gas
wire......reverse polarity is what gas wire runs on.  Straight polarity is
what flux core runs on (most applications).

In wire and stick welding:     reverse polarity = penetration (electrode
positive)
                                           straight polarity = deposition
(electrode negative)

Ralph

----- Original Message -----
From: "gblacksmith" <[email protected]>
To: <[email protected]>
Sent: Thursday, April 24, 2003 11:18 PM
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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