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From: "Russell Duffy" <13brv3@bellsouth.net>
Date: 2005/01/04 Tue PM 09:03:00 EST
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: single rotor stuff
...
Great idea Richard. Since you would have to get it re-hardened when it's
through anyway, I don't see how that can hurt. Was there anything special
to heat treating it when you were done? Naturally, I sold the gas torches
that I had when I got the TIG. I wonder if I could do this with a plasma
torch :-)
Rusty,
I don't know how you would control the process in a "home" shop, but the object isn't to anneal the whole part, but to "surface anneal" just deep enough to anneal *most* of the material you're going to remove. The final size should be ground, same as you would have to do after re-heat-treating.
Thus you need a very hot flame, for a relatively short time, to minimize penetration.
Dale R.
COZY MkIV #1254
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