Re: [CAD_CAM_EDM_DRO] Re: New guy with questions

Absolutely NOT! Oil hardened steel must be tempered too.
It does not take years of skill to learn the process of quenching and
tempering.
Both can be done by eye or in a controlled temperature furnace.

The biggest reason I'm not taking the time to answer this question in full
is because it would take several hours to type in all the pertinent
information to cover only the basics of heat treating.

I'd suggest speaking to a local custom knife maker or college that teaches
subjects along these lines.

Smoke


I THINK the oil-hard is more or less "ready to use" after quenching in oil,
whereas the water-hard is so brittle it must be carefully "tempered"
(re-heated a special controlled amount that takes years of skill at
"reading"
color (redness) of metal, knowing when to stop re-heating, and HOW to
cool-down, properly. But I am NOT sure. When I need a "one-time" tool of
some kind, I often don't even pay much attention to which is which, and just
plunge the orange-hot tool in whatever's handy (my oil-bucket for this
doesn't evaporate as does water, so, often it's "just oil". This works, at
least for one-time, non-professional tools, so I retain ignorance!

Some metallurgist/tool-maker should answer this question for us all!
Well?????

Jan Rowland


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