Mustafa Umut Sarac Posted February 26 Report Posted February 26 Hello there , since my nuclear engineer friend draw an sketch of soft core , hard jacket Japanese sword cutaway 35 years ago , I am interested in swords. Yesterday I found coreless , only hard steel blade diagram called Manu. Is it mass produced ww2 blade or its history goes way back. If it is a classic , I want to learn its steels phase diagram and where it is locked inside the diagram ? And I want to see full spectrum analysis of the steel. Thank you very much, Mustafa Umut Sarac Istanbul Quote
Bruce Pennington Posted February 27 Report Posted February 27 Might help to see some photos, Mustafa. By your description, it sounds much like the zoheito, factory blades of the early 1930s and also like the Type 95 NCO blades of WWII. But photos, and maybe an explanation as to why you think it is mono-steel, would help. Quote
Mustafa Umut Sarac Posted February 27 Author Report Posted February 27 9 minutes ago, Bruce Pennington said: Might help to see some photos, Mustafa. By your description, it sounds much like the zoheito, factory blades of the early 1930s and also like the Type 95 NCO blades of WWII. But photos, and maybe an explanation as to why you think it is mono-steel, would help. Hello Bruce , all I saw about coreless Manu technic is a cutaway computer drawing and filled black and says it is full of hard steel and technics name is manu. Is coreless blade , an 16th century technic or not , I want to know about. At the side of that computer drawing , there were dozen of hard core blades drawings. Umut Quote
Bruce Pennington Posted February 27 Report Posted February 27 I don't study the old blades and methods, so someone else will have to answer about that. I know it was used in the 20th century, though. Quote
Brian Posted February 27 Report Posted February 27 Very early blades were mono-core. Like 1100/1200's. Aside from many tanto, most swords after that weren't mono-steel anymore. 1 1 Quote
Mustafa Umut Sarac Posted February 27 Author Report Posted February 27 2 hours ago, Brian said: Very early blades were mono-core. Like 1100/1200's. Aside from many tanto, most swords after that weren't mono-steel anymore. Thank you very much Brian and all , I am sure you can give me list of that monosteel technology terminology in Japanese. And I want to know the mono steel spectrum analysis and phase diagram and I say again where the metallurgy locked in the phase diagram.Can you give me references ? And I want to know what did early 1100/1200 years era people did to prevent the blade breakage ? Umut Istanbul Quote
The Forest Ninja Posted February 28 Report Posted February 28 Never heard of Manu. I think You meant Maru. Kobuse is more commonly used these days in either a Katana or Wakizashi. A Tanto can be Maru cause they are not exposed to the same stress as a sword. From here: Japanese swordsmithing 3 Quote
Brian Posted February 28 Report Posted February 28 10 hours ago, Mustafa Umut Sarac said: Thank you very much Brian and all , I am sure you can give me list of that monosteel technology terminology in Japanese. And I want to know the mono steel spectrum analysis and phase diagram and I say again where the metallurgy locked in the phase diagram.Can you give me references ? And I want to know what did early 1100/1200 years era people did to prevent the blade breakage ? Umut Istanbul Umut, I can't give you references or technical breakdowns right now. However it's not rocket science. Pretty much the same way just about every single sword made by any custom maker or manufacturer does it nowadays. Regular mono steel billet, forged and heat treated. Same as any military sword worldwide. Except they did differential hardening during yakiire. https://swordis.com/blog/shingane/ Quote
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