Drilling in heat treated steel

The share of based tool materials in the world mechanical engineering and metalworking is distributed as follows: high-speed steels-66%, hard alloys -32%, cutting ceramics -2%. The advent of drills with MNP (multifaceted non-regrowth inserts) significantly expanded the understanding of cutting patterns when drilling and to the subsequent improvement of the tools themselves. This article is devoted to the technological possibilities of MNP drills for drilling, heat treated steel. As a result of research, a decrease in the axial force of 2.0 ... 2.3 times was revealed, the torque under these conditions will change by 2.6 times.

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