How To Make Diamond

Did you know, how a diamond was made? detail what is diamond have explained in previous post "Diamond"
Now I want to share a video how a diamond was made.

As we know the element of diamond same as if a wood was burn become charcoal, but the diamond have receipt very hard process with high pressure and temperature become diamond.

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Diamond

Natural history

The formation of natural diamond requires very specific conditions-exposure of carbon-bearing materials to high pressure, ranging approximately between 45 and 60 kilobars (4.5 and 6 GPa, but at a comparatively low temperature range between approximately 900–1300 °C. These conditions are met in two places on Earth; in the lithospheric mantle below relatively stable continental plates, and at the site of a meteorite strike. How the diamond process made can view in interesting video" How Make Diamond".

Diamonds are formed over a period of a billion or more years deep within earth’s crust – about 150km (90 miles) deep – and is pushed to the surface by volcanoes. Most diamonds are found in volcanic rock, called Kimberlite, or in the sea after having been carried away by rivers when they were pushed to the surface.

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Behind the Greatness of the Samurai

All people know the samurai sword which is very well known in the world due to the sharpness and strengthens.  The mark of samurai was traditionally a pair of finely crafted swords. Each blade was forged by a skilled swordsmith and often elaborately decorated to reflect the prowess of each individual warrior.

Material and preparation, the first step in producing a Japanese katana (lond sword) is the selection of the high-quality materials used to fabricated the blade. The steel consist of 99.99% pure electrolyte iron (denkai-tetsu), sponge/oxygen free iron (kangan-tetsu) , or the more popular tamahagane steel. The tamahagane is the traditional form of steel used I the fabrication of swords which produced in a simple smelter or tatara from charcoal and satetsu, the element iron found in strembeds which heated to temperature between 1200 and 1500^oC over period of three days. This process acts as a rudimentary refining process when the impurities within the base elements are removed in the form of slag. When cool, the tamahagane steel is then broken into usable pieces and sorted by quality and carbon content can range from 0.6 to 1.5%.

When the pieces of steel possess the proper amounts of carbon, the forging process can begin. The tamahagane  is reheated and hammered into roughly one-quarter inch plates. Forging process including forging of the Kawagane, forging of the Shingane. Next step is forming the steel stock, forming the blank, shape the balde, rough grinding and filing, creating the Hamon, hardening the edge,

In fact, behind the greatness of the samurai is material which used and the process of manufacturing of sword which shall consist of step by step followed to obtain the highest quality of the samurai.

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