Fw: <VV> Re: Welding A Control Arm - No Guarentee

[Garth Stapon]

----- Original Message -----
From: "Garth Stapon" <stapon1@earthlink.net>
To: "Rick Loving" <ral1963@earthlink.net>
Sent: Saturday, February 19, 2005 9:01 PM
Subject: Re: <VV> Re: Free Weldiing Advice - With No Guarentee


> Rick:
>
> I am not familiar with the exact material other than they are likely a
cast
> steel which means that it is not considered easily weldable. (Welding
> un-known materials is common in maintenance welding so here are a few
> tricks). To be safe, stay away from mild steel filler metals.
>
>Specify a V groove joint (360 degree ground finish) - to the root of the
> joint to ensure 100% penetration. Do the prep with grinding / machining if
> possible.
>
> Use preheat of 400 degrees F.
>
> Butter each surface prior to trying to join them together (this is a thin
> sealing layer of weld metal that helps to seal in contamination and forms
a
> good bonding surface)
>
> Since the exact composition of the arm is unknown, use an E309 or E312
> stainless filler metal 3/32 diameter with Tig (Gas Tungsten Arc Welding)
> with argon shielding (20 scfh gas flow with post flow set at 5 seconds)

If Mig is used specify (GMAW-P - Gas Metal Arc Welding - Pulsed Transfer).
Be sure
> to specify pulsed metal transfer (to ensure fusion - nuclear subs are
welded
> with this technology) with .045 ER309 or ER312 wire and 95% argon / 5% CO2
> shielding gas (35 cfh gas flow). Use a butter layer with a 360 degree V
groove
> prep.

Conventional Mig welders should NOT be used as an improper setting
> may result in lack of fusion and a defect/failure.  If pulsed Mig is not
> available, use Tig (GTAW).
>
> By adding nickel and chrome to the filler metal (with ER309 or ER312) you
> buy insurance against cracks and by preheating you lower the base metal
> dilution rate and slow the cooling rate which helps to lessen the
formation
> of martensite. (This is bad for base and weld metal ductility)
>
> Do some post weld stress relief by heating to 800 F followed by slow
cooling
> the arm in vermiculite.
>
> Use a stringer bead technique and do not weave if at all possible.
>
>  Please understand that there are risks in what you are proposing to do
and
> if this is not done properly, it could result in failure.

My concern is that the welding shop might say that they have an E309 or E312
grade
> stainless filler metal.  Make sure to see the package. This is critical as
> other grades of stainless such as 308 do not contain enough ferrite to
gives good result when joining cast steels.
>
> Hope this helps.
> ----- Original Message -----
> From: "Rick Loving" <ral1963@earthlink.net>
> To: "'Garth Stapon'" <stapon1@earthlink.net>
> Sent: Saturday, February 19, 2005 7:17 PM
> Subject: RE: <VV> Re: Free Weldiing Advice
>
>
> > Garth,
> >
> > I am only a shade tree welder but have been wanting to have a pair of
> > stock steering arms cut and re-weld into similar length factory quick
> > steering arms.
> >
> > I plan on having a local welding shop do the welding but need to give
> > them the specific of what to do.
> >
> > Are you familiar with the Corvair arms? type of metal they are made
> > from?  Best method of welding for what I need done?, and recommended
> > type of welding rod or wire for the application?
> >
> > Rick Loving
> >
> > -----Original Message-----
> > From: virtualvairs-admin@corvair.org
> > [mailto:virtualvairs-admin@corvair.org] On Behalf Of Garth Stapon
> > Sent: Saturday, February 19, 2005 1:51 PM
> > To: virtualvairs@corvair.org
> > Subject: <VV> Re: Free Weldiing Advice
> >
> > Gents:
> >
> > As Stan East indicated in one of his posts, I make my living as a
> > welding /
> > cutting specialist.  I am in a position to offer free advice on
> > equipment,
> > shielding gases and consumables for a large variety of welding processes
> > including GTAW, GMAW, FCAW, oxy fuel brazing as well as plasma cutting.
> >
> > I will not state the name of my employer as I wish to keep this
> > non-commercial, but lets just say that my employer is a fortune 500
> > Company
> > that is also a major player in the global welding arena.
> >
> > My expertise includes, stainless steel, aluminum, carbon steel, high
> > nickel,
> > chrome moly and titanium alloys.  My role at our Company is that of a
> > trouble shooter.
> >
> > Feel free to contact me off line if you wish to discuss your
> > application.
> >
> > Regards,
> >
> > Garth Stapon
> >
> > LATE CANADIAN POWER GLIDE SEDANS RULE
> >  _______________________________________________
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