12-28-2017, 10:46 PM
Thanks guys.
Yeah. I didn’t mean to say work hardening. I completely understand that is different. We have considered if repeated bending of a burr in an attempt to remove it may cause work hardening, but that is a different subject.
What I was wondering and you guys have answered, was if the reheating during sharpening acted like the original heat treating / flash cooling to harden, or further tempered the edge.
Blades never get hot when I sharpen. However, I’m open to the idea that some flash/grain/background heating may very well be happening at the microscopic level as material is brutally torn from the edge.
That is a very cool video. It really goes to show just how savage machining and sharpening is to an edge. Guess I’ll have to start squirting carbon tet like holy water. I wonder how modern synthetic coolants compare with, or if they contain cabon tet mentioned in that, what looks like, a 1950’s video.
Seeing the world on a microscopic level is always amazing. It’s amazing how things that seem like a non-event can be cataclysmic on the micro level.
I’m guessing the reason that heating during sharpening tempers rather than hardens is because it’s less than the original HT temp, and that it is not quickly cooled. Correct?
Yeah. I didn’t mean to say work hardening. I completely understand that is different. We have considered if repeated bending of a burr in an attempt to remove it may cause work hardening, but that is a different subject.
What I was wondering and you guys have answered, was if the reheating during sharpening acted like the original heat treating / flash cooling to harden, or further tempered the edge.
Blades never get hot when I sharpen. However, I’m open to the idea that some flash/grain/background heating may very well be happening at the microscopic level as material is brutally torn from the edge.
That is a very cool video. It really goes to show just how savage machining and sharpening is to an edge. Guess I’ll have to start squirting carbon tet like holy water. I wonder how modern synthetic coolants compare with, or if they contain cabon tet mentioned in that, what looks like, a 1950’s video.
Seeing the world on a microscopic level is always amazing. It’s amazing how things that seem like a non-event can be cataclysmic on the micro level.
I’m guessing the reason that heating during sharpening tempers rather than hardens is because it’s less than the original HT temp, and that it is not quickly cooled. Correct?