The effects of liquid-CO2 cooling, MQL and cutting parameters on drilling performance
Journal article, 2021

An investigation is made into the effects of liquid carbon dioxide (LCO2) cooling, minimum-quantity lubrication (MQL) and cutting speed in drilling. Experimental measurements of torque, thrust force and temperature are made over a wide range of process and operating conditions. The resulting empirical models are used to quantify the individual contributions of the controlled parameters on drilling performance, and to facilitate temperature-based process optimization. Of particular interest is the need to carefully adjust the LCO2 flow rate for any combination of MQL flow rate and cutting speed. The optimization is validated both in simulation and actual drilling tests.





Luka Sterle

University of Ljubljana

Peter Krajnik

Chalmers, Industrial and Materials Science, Materials and manufacture

Franci Pusavec

University of Ljubljana

CIRP Annals - Manufacturing Technology

0007-8506 (ISSN)

Vol. In Press

Subject Categories

Energy Engineering

Other Materials Engineering

Fluid Mechanics and Acoustics



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