[TheForge] Arc welding advice sought

[dantull dantull]

Ya'll need to check out MG750 rods. Not as expensive, great for dissimilar
steels, NO pre/post heat. Been using them for years for mild hardy tangs to
tool steel, and anvil repair.

It's not firewood, it's a vaasse.
Dan Tull
Georgia

On Wed, Jun 3, 2015 at 8:29 PM, jerry Frost <akfrosty at mtaonline.net> wrote:

> Good deal, I think you're on the right track now.
>
> I use Kaowool, refractory ceramic blanket for annealing if I don't just
> leave it in the forge till cool. Great stuff, I keep extra around just
> because.
>
> Frosty
>
> -----Original Message-----
> From: TheForge [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Mike
> Spencer
> Sent: Wednesday, June 3, 2015 3:15 PM
> To: theforge at mailman.qth.net
> Subject: [TheForge] Arc welding advice sought
>
>
> Follow-up to my problem of brittleness & fracture in the HAZ when welding
> m/s to truck helper spring stock:
>
>    + Cut off a test piece of the stock.
>
>    + Pre-heated in gas forge.  Turned kinda purple-ish but not a
>      carefully controlled heat.
>
>    + Welded while hot with 7018.  Just a butt weld, no V but reversed
>      polarity.
>
>    + Post-heated in gas forge.
>
>    + Wrapped in ceramic wool batts until dead cold.
>
> Once cool, I put the test piece in a heavy vise and tried to bust it with a
> 12# sledge.  No sign of cracking.
>
> So today I repeated the process with the actual work piece.  Almost too big
> for the tube-type forge but I git it in and turned around several times.
> The m/s part was already tacked in place and it got dull red but not the
> much heavier 2x3x8 inch spring stock.
>
> It'll take all night for it to cool in the batts so we'll see tomorrow.
>
> An aside: That ceramic batt is great stuff. Set a hot workpiece on it so
> the
> welding table won't draw heat.  Lay a piece over the top and you can rest
> your gloved hand on the hot workpiece without getting burned.
>
> Thanks all for the suggestions,
> - Mike
>
> --
> Michael Spencer                  Nova Scotia, Canada       .~.
>                                                            /V\
> mspencer at tallships.ca                                     /( )\
> http://home.tallships.ca/mspencer/                        ^^-^^
>
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