RT Journal Article SR Electronic A1 Jersák, Jan A1 Kaplan, František T1 Comparison of the Influence of Process Fluids on Tool Life in Face Milling JF Manufacturing Technology Journal YR 2015 VO 15 IS 6 SP 977 OP 984 DO 10.21062/ujep/x.2015/a/1213-2489/MT/15/6/977 UL https://journalmt.com/artkey/mft-201506-0004.php AB Thanks to their chemical and mechanical properties, the process fluids (PFs) can significantly affect the process of machining [2], [15], [16], [18]. It is particularly important that PFs should positively influence the quality of the machined surfaces of machine parts and durability of cutting tools [4], [5], [6], [7], [10], [11], [12], [14]. Other significant factors in PFs are economic and environmental [17]. The costs of the acquisition, use and disposal of PFs must not be too high. As part of the research project in collaboration with the company Paramo, a.s. and the Technical University of Liberec, completely new environment-friendly PFs (labeled as PF01, PF02, PF03, PF04, and PF05) have been developed and evaluated. In the Laboratory of Machining at the Technical University of Liberec, the effects of these new PFs were examined from a viewpoint of a number of technological aspects. This article presents the results of experiments conducted on structural steel 16MnCr5 and stainless steel X2CrNiMo18-14-3 face milling using these newly developed eco-PFs.