[TheForge] Refacing old anvils?
GHS
[email protected]
Tue Apr 1 14:32:00 2003
You have come to the right place then.
Mike Graf
gblacksmith wrote:
>
> Thanks, Mike.......I love to talk. Grant
> ----- Original Message -----
> From: "GHS" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, April 01, 2003 10:02 AM
> Subject: Re: [TheForge] Refacing old anvils?
>
> > Welcome aboard Grant.
> >
> > Mike Graf
> >
> > gblacksmith wrote:
> > >
> > > Kevin: The lack of preheat could have caused your cracking at the
> welded
> > > surface. Without knowing your exact technique for doing this repair, I
> > > can't be sure.
> > >
> > > Some claim that preheating is not necessary, others insist that it is.
> If
> > > you choose to preheat (I would...I typically preheat generously when
> welding
> > > tool steel to low-carbon in "found art"sculpture.) you can use a weed
> > > burner. I would recommend building a firebrick "igloo" around your
> anvil,
> > > and inserting the wide weed burner tip from the side or bottom, like a
> raku
> > > kiln. Preheat the anvil to roughly 390F by blowing a low flame on each
> side
> > > of the anvil for 50 min. to one hour. Use a tempil stick to measure
> > > temperature.
> > >
> > > There is a company called Messer who makes a hard-facing welding rod
> called
> > > MG 710 which is used in this type of repair. Note that final hardness
> will
> > > depend on how many beads you run. Contact Messer technical assistance
> for
> > > advice on the procedure...they have a 1-800 number. DON'T TRY GUESSING!
> > >
> > > Also, I would recommend grinding out all of the previous weld...not
> all
> > > rods are compatible.
> > >
> > > Remember to take you time and not rush the job.
> > >
> > > I hope this helps
> > >
> > > Grant Marcoux
> > > ----- Original Message -----
> > > From: "Kevin" <[email protected]>
> > > To: <[email protected]>
> > > Sent: Tuesday, April 01, 2003 7:23 AM
> > > Subject: [TheForge] Refacing old anvils?
> > >
> > > > I'm a relatively new member to the listserve and I wanted to ask for
> > > > opinions about making repairs to an anvil face. I picked up an old
> anvil
> > > > about 8-9 years ago that has a pretty large divot in the work face.
> The
> > > > defect is about 2x3 inches and is as deep as 1/2" at one point. I
> used
> > > the
> > > > anvil to work smaller projects for about 3 years before I could find
> > > > another anvil in the area that I could afford.
> > > >
> > > > At one point I tried to build up the divot using a hard surfacing weld
> > > rod,
> > > > but saw that over time the repair began to develop a lot of cracks and
> > > > eventually began to chip as I worked the anvil surface. Over the past
> > > > month I've been considering making a second attempt at the repair,
> this
> > > > time using a low hydrogen weld rod (7018) instead. The anvil face has
> a
> > > > pretty high carbon content (I'm basing this on a spark test) so I'm
> not
> > > > sure what kinds of pre- and post-heating procedures I should use in
> the
> > > > repair. In my first attempt I did not try to preheat the surface, and
> > > I've
> > > > heard that this may have been the cause of the cracking. I've heard
> that
> > > I
> > > > should preheat the surface to ~350 degrees and maintain this
> temperature
> > > > through the weld repair and for 2 to 3 hours after I've completed the
> > > > repair in order to reduce cracking.
> > > >
> > > > I was wondering if anyone else has had experience in making this type
> of
> > > > repair to an anvil face, and if so, I'd appreciate any insight that
> could
> > > > be provided.
> > > >
> > > > Thanks,
> > > > Kevin
> > > >
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--
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