Tag Archives: high speed steel drill bit

January 10, 2019

How to select the material of drill bit?

According to the machining characteristics of the material, the drill bit is required to have the following characteristics: the hardness of the drill bit must be greater than the hardness of the workpiece to be processed. Because the bit bears a lot of torsion and axial force when machining the workpiece, it must have enough […]

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