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Post by tsmspace on Apr 26, 2020 4:20:44 GMT
myarmoury.com/talk/viewtopic.32234.htmlnorsespirit.wordpress.com/tag/hammer-hardening/These two links talk about hammer hardening. what does this mean for a historical context?? where do we find ,,, or do we find,,, examples of hammer hardened equipment?? how does this relate to cold-rolling,,, is it the same?? Are there any manufacturers that produce hammer hardened swords?? Has there been any testing , for example comparison testing, , of such equipment or is this simply the arena of diy?? what is the resulting hardness potential??
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Post by AndiTheBarvarian on Apr 26, 2020 4:33:45 GMT
Hammer hardening is very important for metals that can't be quenched like steel, esp. bronze or low carbon steel/iron. Ancient bronze swords and armor were hammered after casting and also modern makers of bronze swords do this. Quenching steel is much more effective. In the times before steel casting was invented hammering the steel in the forge was also useful. With modern casting steel techniques the rolling process has similar effects. Hammering a blade made of rolled casting steel hasn't an effect any more, at least compared to a well made heat treatment. I don't know any comparisons. www.cashenblades.com/images/articles/lowdown.htmlwww.tf.uni-kiel.de/matwis/amat/iss/kap_3/backbone/r3_3_2.html
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Post by MOK on Apr 26, 2020 6:03:06 GMT
AKA work hardening, strain hardening or compression hardening. Same phenomenon happens when you bend a paper clip back and forth until it eventually snaps. It doesn't really do anything for properly heat treated steel - i.e. if they're both hardened and tempered the same way, a blade forged with hammer and anvil should turn out exactly as hard/springy as one ground out of sheet steel, and won't get any better even if you go back and pound it some more afterwards - but as Andi said it was important for bronze and iron (and mild steel, which today is often used in place of iron for historical reproductions). And yes, cold rolling is the same thing, just done on an industrial scale.
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