[TheForge] chinese ASOs

[Jerry Frost]

----- Original Message -----
From: "lama" <lama@huntbrothers.com>
To: <theforge@mailman.qth.net>
Sent: Friday, March 28, 2003 1:56 PM
Subject: Re: [TheForge] chinese ASOs


> That Frosty is a pretty smart dude, but I never heard of brazing a
hardface
> to an anvil.
> The wrought ones were forge welded on. I have heard of using electric
"plug
> welds"
> through the hard face plate then an "edge weld" around the whole hard face
> to attach
> it to an anvil body. That might work well with a cast iron anvil body and
a
> hard face plate.
> dave m
>


You're making me blush Dave.

I've heard of different methods of welding a face to an anvil too but
usually they were better quality to start with, not these cruddy chinese
castings.

I've also never heard of anybody brazing a face to an anvil. Still it should
work. At least I think so.

A properly prepared brazed butt join has a tensile strength of 35,000-40,000
psi. with oxy acet. if memory serves and about 30% stronger with oxy prop.
if All States is correct and they haven't BSed me so far.

There are a few conditions when talking about an anvil face though. The big
thing is maintaining the join during forging so the face must be rigid
enough not to flex the braze. This means the face needs to be pretty thick
and hard enough not to flex under the hammer.

Thick is easy and hard means heat treating. Neither of these seems like a
problem a little experimentation can't perfect.

The big question I have though is how well a large piece of cheap cruddy
chinese cast iron will stand up to the shock of quenching.

I never thought of using an air hardening steel till now. What I wonder is.
Air hardening means air quenching. It comes to full hardness cooling at the
rate air chills it. As an anvil face, it'll cool much more slowly as it has
the large thermal mass of the cast iron body. I think it'll take a more
agressive quench than air in this case. Still not having to worry about
tempering is pretty attractive and worth thinking about.

Frosty
------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.