Today was quench day. First off I had to normalize the blade by bringing it to austentizing temperature (about 1600 degrees, you can tell with a magnet because it becomes nonmagnetic). This relieves the stress of forging. Then the quench, again bringing it up to nonmagnetic temperature plus about 50 degrees and then quench in oil. I actually chose transmission fluid, you can use any oil or mixture of oils, even cooking oils. I did an "edge quench", using a regulator block you put the heated blade in to just where 1/3 or so of the blade is quenched, this hardens the blade, keeps the middle section elastic and the spine softer. This makes the blade "tougher" as it can give and bend. The picture of the blade is after the quench, ugly, but it didn't crack or warp!!!! Last step triple tempering. Hopefully the internal structure of the blade is martensite, very hard brittle, highly stressed and unstable. By bringing to about 425 degrees for at least an hour X3 the martensite is softened. This should hopefully give the blade a "working hardness". A lot of trial and error, will need to test the blade when done. 😁 Fire, pounding metal and science, good times.
#artistic #art #craftsman #creative #blade #blacksmith #knife #knives #forgedinfire #steel #metal #selfreliance #wanderlust #anvil #hot #heat #igers #ig #instagram #instagood