Craftsmanship of the Katana Sword
The forging materials of Japanese samurai swords are made of a mixture of different materials. Due to the different materials, the purpose of bending the blade is achieved, and then multiple procedures such as blade making, beating, quenching, and grinding are required to achieve a handle without a handle without a sheath. The various materials used in silver katana swords result in different overall carbon content, so repeated heating, softening, and folding are required to remove impurities and balance carbon. After folding the steel, it is usually at least 7 or 8 times, and as many as 20 or 30 times, each time it takes hundreds of hammers, and the unique pattern on the samurai sword is hammered in this way. The quenching temperature of Japanese samurai swords is about 850°C, but most of the outer hard steels only have 0.75% carbon content, and the hardness of the knife edge is only about HRC58 degrees.Therefore, it is necessary to infiltrate a little carbon, perform solid carb...