Abstract
The present study analyzes the impact of various lubricant-cooling process agents on the durability of drill bits made of AISI M2 (DIN 1.3343) high-speed steel. The research was conducted for a wide range of steels and alloys, namely: 1045, 321H, Mo-PM (molybdenum powder alloy), and W-Ni pseudo-alloy. New lubricant-cooling process agents with diamond graphite submicropowder additive are studied. The optimal composition of diamond graphite additive is revealed when drilling these steels and alloys. Experimental studies established a positive effect of lubricant-cooling process agents with the diamond graphite submicropowder additive on the durability of the drill bits made of AISI M2 steel.
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