[TheForge] Re: Burning Metal

Wed Nov 5 15:05:01 2003

Hey Ralph,
Use your ESAB 875  I.  it will cut thru the C/I like butter. Cut is almost
as clean as one in steel.
I also use mine to cut thru non conductive materials by wrapping it with
thin steel sheet (1006-8) cut from old 55 gal drums.
Chuck
----- Original Message -----
From: "Ralph Sproul" <[email protected]>
To: <[email protected]>
Sent: Wednesday, November 05, 2003 6:37 AM
Subject: Re: [TheForge] Re: Burning Metal


> Thanks Pete, that gives me a base line to try it out on.  I have some
broken
> cast sections(legs and frames) with radiating fractures.  I'd like to
remove
> and put sawn in sections from cast plates I have.  This is an interesting
> solution.  I also have plasma and carbon arc torches to play with so it
> should be a fun project testing all these out .....just after a rainy day
of
> course down in the field where this all lays in wait.
>
> Ralph
> ----- Original Message -----
> From: "Peter Fels And Phoebe Palmer" <[email protected]>
> To: <[email protected]>
> Sent: Wednesday, November 05, 2003 12:18 AM
> Subject: Re: [TheForge] Re: Burning Metal
>
>
> >
> >
> > Hi Ralph:
> > It depends on how much extra heat you need to sustain the cut, which is
> > to say, how thick the cast iron is. My recollection is using 1/2" scrap
> > to fuel  a cut in 3/4" cast iron and it was a ragged cut. Could be it is
> > more controllable with practice....Pete F
> >
> > Ralph Sproul wrote:
> >
> > >Hi Pete, That's an interesting idea - I've never tried that, but would
> like
> > >to.  Do you use something light like 1/4" or does it take 1/2 to keep
the
> > >oxidizing stream going?
> > >
> > >Ralph
> > >
> > >----- Original Message -----
> > >From: "Peter Fels And Phoebe Palmer" <[email protected]>
> > >To: <[email protected]>
> > >Sent: Monday, November 03, 2003 9:13 PM
> > >Subject: Re: [TheForge] Re: Burning Metal
> > >
> > >
> > >
> > >
> > >>One can use a sacrifice piece of steel to sustain a torch cut  in cast
> > >>iron..carbon isn't the critical factor..plain iron seems to be...PF
> > >>
> > >>Andy Gladish wrote:
> > >>
> > >>
> > >>
> > >>>>I think if the carbon content was the accelerating factor, cast
> > >>>>iron should
> > >>>>cut easily.
> > >>>>The  best I can do on cast iron with an O/A torch is a very sloppy
> cut.
> > >>>>My plasma torch however cuts it easily.
> > >>>>chuck-
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>I think that what is happening when I use an O/A torch to cut cast
iron
> > >>>
> > >>>
> > >is
> > >
> > >
> > >>>that the preheat is melting the metal and the oxygen jet is blowing
it
> > >>>aside. Way different from the sharp, clean cut (burn) I get with
steel
> > >>>
> > >>>
> > >when
> > >
> > >
> > >>>things are set up correctly.
> > >>>So, a torch will 'cut' things that it can't 'burn'.
> > >>>Andy G.
> > >>>
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