Improvement of Drill Performance in Metal Cutting Using MoST Solid Lubricant Coatings

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N.R.Thomas D.G.Teer S.Yang S,Hickman

TeerCoatingsLtd.,WestStoneHouse,WestStone,BerryHillIndustrialEstate,Droitwich,IVR99AS,UK

国际标准刊号：ISSN 1009-6264

国内统一刊号：CN 11-4545/TG

摘　　要:

Coated tools are widely used in today‘s metal cutting industries and have significantly improved machining productivity through reducing operation costs and “time. This paper presents the results of a systematic study of the performance of HSS drills coated with CrTiAlN and drills with a top solid lubricant coating of MoST^TM. The tests were performed on a Haas vertical machining centre under wet and dry cutting conditions to machine through holes in medium carbon steel workpieces. The feed force and torque were recorded throughout some of the tests using a force dynamometer, while the tool wear was monitored and measured. It was found that MoSTTM coatings even under accelerated conditionsimprove the tool life significantly based on their unique properties and very low friction.