Originally Posted by
Willie1
Out of curiosity, I have been wondering about the numerous discussions here regarding the downside to putting metal through additional heat cycles for repairs, or tube replacement. I have been building some custom knives and other tools recently and have been learniong a lot about heat treatments, tempering, and annealing. If a tube was overcooked, could it not be annealed back to a more plastic state to remove the brittleness? To get to the brittle state, the tube would have to get to over approx 1500f. It would have to get to the bright orange, heating to the point of losing its magnetism, then cooling quickly, such as quenching in oil or water. Brazing is several hundred degrees less with brass/bronze, and even lower with silver. The metal cools slowly when brazing in contrast to quenching as well. If a brittle tube was annealed for 2h at 200-400f, it would become much more plastic, wouldn't it? Or am I missing something?
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