[modeleng] Re: Torches & Boilers
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Mon, 9 Jan 2006 13:44:46 -0800 (PST)
Many thanks, Ian, this gives me a starting point for
my learning curve.
Al Messer
--- Pendragon <idpriest@xxxxxxxxxxxxxxxx> wrote:
> Al,
>
> I've just checked and the DA is at about 7psi and
> the oxo at about 10 =
> psi
> with a number 5 nozzle, but I have only recently
> been silver soldering =
> some
> quite thin material hence the fairly small nozzle.
>
> I all honesty I don't know what gas pressures I use
> [I must check]. =
> When
> brazing a boiler I usually go to a number thirteen
> nozzle.
>
> I think the answer lies in adjusting the gas
> pressure so that a roaring
> flame is NOT produced it seems that the pressures I
> use produce a quite
> flame. Hope that makes sense.......But I'm sure
> more expert listees =
> than me
> would be able to give you a deffinative answer.
>
> Regards IP
>
> "Life should NOT be a journey to the grave with the
> intention of =
> arriving
> safely in an attractive and well preserved body, but
> rather to skid in
> sideways, Champagne in one hand - strawberries in
> the other,=20
> body thoroughly used up, totally worn out and
> screaming WOO HOO - What a
> Ride!"=20
> =20
> "Never drive faster than your gaurdian angel can
> fly"
> =20
> Priest & Sons Model Engineers
> http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
>
>
> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx =
> [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of Allen Messer
> Sent: 09 January 2006 02:22
> To: modeleng@xxxxxxxxxxxxx
> Subject: [modeleng] Re: Torches & Boilers
>
>
> Ian,
>
> What pressure in psi do you set your regulators to
> deliver the two gases to the torch?
>
> Al Messer
>
> --- Pendragon <idpriest@xxxxxxxxxxxxxxxx> wrote:
>
> > Gents,
> >=20
> > I agree, I use oxy/acetylene and a soft flame does
> a
> > far better job. =3D
> > There
> > are also technical reasons but I won't go into
> them
> > at this stage.
> >=20
> > Regards IP
> >=20
> > "Life should NOT be a journey to the grave with
> the
> > intention of =3D
> > arriving
> > safely in an attractive and well preserved body,
> but
> > rather to skid in
> > sideways, Champagne in one hand - strawberries in
> > the other,=3D20
> > body thoroughly used up, totally worn out and
> > screaming WOO HOO - What a
> > Ride!"=3D20
> > =3D20
> > "Never drive faster than your gaurdian angel can
> > fly"
> > =3D20
> > Priest & Sons Model Engineers=20
> > http://www.kinvermes.pwp.blueyonder.co.uk/p1.htm
> >=20
> >=20
> > -----Original Message-----
> > From: modeleng-bounce@xxxxxxxxxxxxx =3D=20
> > [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> > On Behalf Of Jesse Livingston
> > Sent: 08 January 2006 18:01
> > To: modeleng@xxxxxxxxxxxxx
> > Subject: [modeleng] Re: Torches & Boilers
> >=20
> >=20
> > Harry, Tel, et al,
> >=20
> > In my experience, what little I have accumulated
> in
> > 55 years at the=3D20
> > machinist trade, the main thing with using
> > oxy/acetylene torches for=3D20
> > silversoldering is to make sure you have a soft
> > flame. I have had =3D
> > better=3D20
> > luck by leaving a bit of a "feather" in the flame
> > which shows an excess =3D
> > of=3D20
> > acetylene. This cuts down on the possibility of
> > oxidizing the =3D
> > copper/brass/
> >=20
> > steel, whatever by overheating in a localized
> area.
> > A large welding =3D
> > tip=3D20
> > should work as well as a cutting or rosebud as
> long
> > as the flame is not=3D20
> > "hard" with excess oxygen. Just my two cents
> worth.
> >=20
> > Jesse in very windy/warm West Tennessee where it
> > ought to be at least =3D
> > cold,=3D20
> > but is instead 64=3DB0F outside. My 5' x 6' US
> flag
> > is standing straight =3D
> > out=3D20
> > right now.
> >=20
> > >>>No Harry - the cutting tip is by far the best
> way
> > to go - Tel
> > >
> > > I don't dispute either of you, and I plan to
> > look into this matter =3D
> >=20
> > > further, but still it puzzles me because in 40
> > years of readings of=3D20
> > > decades of resources (all the usual suspects)
> and
> > discussions not a=3D20
> > > single word of using a cutting torch for boiler
> > building has ever been =3D
> >=20
> > > mentioned. You can
> > > understand my skepticism.
> > >
> > > Regards,
> > > Harry
> >=20
> > MODEL ENGINEERING DISCUSSION LIST.
> >=20
> > To UNSUBSCRIBE from this list, send a blank email
> > to,=3D20
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> > line.
> >=20
> > MODEL ENGINEERING DISCUSSION LIST.
> >=20
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> >=20
>
>
>
> =09
> __________________________________________=20
> Yahoo! DSL - Something to write home about.=20
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