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12-07-2016, 04:10 PM #4
Thank you for your answer, you appear to know about the process.
I've read about marquenching and salt baths. What I'm wondering about is, metals are excellent heat conductors by their nature, so, wouldn't that result in a more uniform temperature drop to the piece of steel we'll be quenching, unlike oil/water/salts? If the piece of steel cools uniformly, no matter its speed, wouldn't that reduce greatly the formation of these cracks?
Theoretically, quenching in an alloy would be a smaller shock for the piece of steel; the liquid alloy will be a lot colder, but again, since it's an alloy, the heat transfer would be a lot faster, resulting in both a faster AND gentler quench for the whole piece. IF we achieve same or higher heat conductivity with that of iron (steel should be close to that) that would mean, we will be able to achieve maximum hardness with close to zero failure rate for our quenched edge no matter it's shape-size.
Does that make sense?
I would like to find a way to achieve hardness, for low alloy steel with carbon content close to 1%, of above 65 RC (like some Japanese razors that have showed a hardness rating of 67RC, how could they do that in an age where knowledge and technology was behind) and am searching for ways to do that. If I could reduce the failure rate, that would be a big bonus since grinding a blank, at least for me, takes days.