Sword Blade Lamination

These were photographed with a cheap macro lens that comes with a fish eye lens but it did the job in capturing.

Sword blade lamination. Maru no lamination it is forged only one type steel. At kantei sessions or sword meetings it is usually not the biggest problem to identify a blade as a kamakura blade on the basis of its shape the sugata leaving well made utsushimono out of consideration. Laminated steel is not a specific type of steel but instead is a reference to a traditional method of constructing a japanese sword blade by utilizing different steels in a compartmentalized manner to locationally optimize the blade. These lamination methods together with the differential hardening of the blade to give a hard edge hamon while maintaining a softer blade spine make the japanese sword one of the most durable and break resistant swords known.

A harder outer jacket of steel wrapped around a softer inner core of steel. Just to repeat blades of the transitional period from heian to. Honsanmai it is similar with sanmai. The most common lamination method the japanese sword blade is formed from is a combination of two different steels.

Lamentation is worth 2k but the lamentation blade is not. Hi all i would like to know to which extend blade lamination techniques are being used for modern production katanas and custom katanas. The blade of the sword has been hand forged and quenched using diferential hardening in the same methods as traditional japanese nihonto the core of the blade is made of forged aisi 1045 steel and the sides are made of forged aisi 1095 carbon steel folded 11 times generating 2048 layers in the steel in kobuse lamination style. Back steel using soft steel.

I have done some searching here in the forum and it seems that most of the production blades are maru monosteel in which the differential hardening is brought about by clay coated quenching. This creates a blade which has a hard razor sharp cutting edge with the ability to absorb shock in a way which reduces the possibility of the blade. Forging use 3 types steel. The 2k sword is 1hs this is 2hs.

A laminated steel blade or piled steel is a knife sword or other tool blade made out of layers of differing types of steel rather than a single homogeneous alloy the earliest steel blades were laminated out of necessity due to the early bloomery method of smelting iron which made production of steel expensive and inconsistent laminated steel offered both a way to average out the. The 3 close up photos show the lamination line on the edge showing the blade is honsanmai laminated. With kobuse lamination the blade is only made of 2 different steels 1095 for the hard edge and 1050 for the inner core. These methods of lamination have been determined by metallurgical analysis of numerous antique sword blades.

We all know more or less the changes in kamakura era sugata and are able to tell the basic characteristics of each phase.