Use of Natural Diamonds in Industry

Natural diamond is used by industry for many different purposes, such as for instance drill bits, saws, diamond wheels, drawing dies, and as a loose grain abrasive for polishing. However, the role of diamond for industrial appKcations has to a great extent been taken over by synthetic diamond. 

There is a second drawback with diamond, natural or synthetic, in some appHca-tions. If a tool is used for machining of a steel component by turning, milUng or drilling, the temperature at the contact point between tool and steel becomes so high that the diamond is destroyed. It will be transformed to graphite. For steel machining, a tool made of cubic boron nitride (CBN) may be used instead. 

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