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Drill material selection

Aug 25, 2016

At present, the applicable tool material greatly, including tool steel, tungsten carbide, superhard materials, etc.

At first, attempting to test using high speed steel drill bit coating, ordinary high speed steel drill bits low prices when using coating technology, can significantly reduce the coefficient of friction of the tool and the workpiece, increased tool life. But because of the higher machine speeds, using the bit strength enough, resulting in the processing of drill bit broke, the effect is not ideal.