I've read many posts on using a chain grinder and have considered buying the Maxx from Bailey's.
It seems like whenever my saw dealer sharpens a chain for me it comes back with blued teeth.
How do ya prevent losing the temper while sharpening?
One tree service guy told me, he does'nt care because he's making $800-1500 per job and can afford to buy a roll of chain.
That's interesting because heating carbon steels to a blue colour typically knocks between 5 and 10 Rc Hardness points off their full hardeness. The steel in chain is typically around Rc58 - 59 and should drop to 51-52 when blued. Fortunately in most chain grinding situations this happens so quickly the whole cutter is not affected and a few sharpenings later the harder stuff is able to be accessed. The quicker and the more is ground off in one grinder stroke the more of the cutter will be affected.
Hand file dude. Hand file...
eh?
Volunteering to hand file the wrecked 172DL .404" chain?
Lucky I've got a grinder, there is a fair bit of steel to take off to fix it!
Yes, it' the heat that take out the diamond when used on carbon Steel. It's not for Chainsaw chain grinding.... ABN/CBN is. You "could" use diamond but it would have to be done very slowly... There is a lot of hand powered solution for knives, chisels etc. I have several.
Diamond might be hard but it is also brittle, What happens when diamond rubs against any surface is that a small amount of diamond powder is formed and this can help abrade the surface. If the diamond powder is not removed from the surface pretty soon after it is made its "diamond rubbing-on-diamond" which wrecks the diamond grinder/cutter. This is why when ceramics or such are cut with a diamond saw a lube such as water is used. On a ferrous surface the nanodiamonds cystals chemically bond into the inter grain boundaries and carbon literally dissolves from the diamond structure into the steel forming a high carbon iron (Fe3C) layer on the surface of the material. The high carbon layer is the able to bond more nanodiamonds onto the surface and pretty soon it's "diamond rubbing-on-diamond"!
As well as wrecking the diamond tool it leaves the surface of the steel in a high carbon work hardened state which makes it a pain to drill/grind/cut/sharpen.
Excellent description Bob. Not hard to tell you're a scientist
Diamond might be hard but it is also brittle, What happens when diamond rubs against any surface is that a small amount of diamond powder is formed and this can help abrade the surface. If the diamond powder is not removed from the surface pretty soon after it is made its "diamond rubbing-on-diamond" which wrecks the diamond grinder/cutter. This is why when ceramics or such are cut with a diamond saw a lube such as water is used. On a ferrous surface the nanodiamonds cystals chemically bond into the inter grain boundaries and carbon literally dissolves from the diamond structure into the steel forming a high carbon iron (Fe3C) layer on the surface of the material. The high carbon layer is the able to bond more nanodiamonds onto the surface and pretty soon it's "diamond rubbing-on-diamond"!
As well as wrecking the diamond tool it leaves the surface of the steel in a high carbon work hardened state which makes it a pain to drill/grind/cut/sharpen.
That's what I'd call a hand-waving explanation rather than a scientific one, which would be using exciting terms like electron orbitals and spdf jargon but that would make me look like a total nerd!
By all means Bob, crack out the electron orbitals and spdf jargon Hard to believe you mill logs in your spare time and aren't helping NASA on weekends. Only kidding!
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