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In Reply to: What we have here is Failure to communicate. posted by geoffkait on July 28, 2014 at 13:35:50:
Correct, and you seem to consistently miss the boat, so to speak. There is a significant difference between tempering and annealing (try googling them). You example of annealing for swords is so fraught with inaccuracies as to be totally worthless
Also your understanding of Japanese samurai swords is also flawed and erroneous.
The keenness of the blade is achieved through forging the blade and repeatedly folding over the alternating section of high carbon steel with regular steel (low carbon). By repeated folding and forging the sword becomes comprises of many hundreds of layer of alternating steel.
The high carbon steel gives the blade the sharp edge as with modern kitchen knives ( professional types). AFter forging the blade is then heated up to a light red color and then quenched. But this is done only after coating the cutting edge with some clay which gives the traditional swords that wavy visible coloration, This insures the blades retains its hardness from forging and then anneals the backbone of the blade to insure it does not shatter.
It is interesting to note that the blades are forged straight and the curvature is derived from the shrinking process of the steel when quenched.
When you look up Japanese sword blades, please also look up work hardening, a process every metal worker is intimately familiar with
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Follow Ups
- RE: What we have here is Failure to communicate. - unclestu 16:29:42 07/28/14 (8)
- The difference between forging and tempering - geoffkait 03:45:20 07/29/14 (7)
- RE: The difference between forging and tempering - unclestu 07:23:50 07/29/14 (6)
- Japanese swords are not the issue. Hel-loo!! Nt - geoffkait 09:15:57 07/29/14 (5)
- Is English a second - unclestu 15:28:21 07/29/14 (4)
- Your tongue is sharp today. - geoffkait 16:11:58 07/29/14 (3)
- nuff said - unclestu 17:20:51 07/29/14 (2)
- You can have the last (s)word. - geoffkait 02:10:31 07/30/14 (1)
- Yawn............. - unclestu 12:07:18 07/30/14 (0)
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