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      Experimental Study on the Effects of Coolants on Surface Quality and Mechanical Properties of Micromilled Thin-Walled Elgiloy

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          Abstract

          In this study, minimum quantity coolant/lubrication (MQCL) is found to have significant impact on the surface quality and mechanical properties of the micromilled thin-walled work piece that is the core component of an aeroaccelerometer. Three kinds of coolants were used in the micromilling process to analyze their effects on surface quality and mechanical properties of the component. The experiment results show that an appropriate dynamic viscosity of coolant helps to improve surface roughness. The high evaporation rate of the coolants can enhance the cooling performance. Comparing with the dry machining case, MQCL has better performance on improving tool wear, surface quality, and mechanical properties of the micromilled work piece. It yielded up to 1.4–10.4% lower surface roughness compared with the dry machining case in this experiment. The machined work piece with the best mechanical properties and the one with the worst mechanical properties appeared in the ethyl alcohol and the dry machining case, respectively. The reasons for deteriorating surface quality and mechanical properties in dry machining cases are also analyzed. For improving the micromilling process, the penetration and cooling effect of the coolants are more important. This paper gives references to obtain better service performance of the component by improving the micromilling process.

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          Most cited references44

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          Effects of Minimum Quantity Lubrication (MQL) in machining processes using conventional and nanofluid based cutting fluids: A comprehensive review

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            A study on droplets sizes, their distribution and heat exchange for minimum quantity cooling lubrication (MQCL)

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              Sustainable machining of high temperature Nickel alloy – Inconel 718: part 1 – predictive performance models

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                Author and article information

                Journal
                Materials (Basel)
                Materials (Basel)
                materials
                Materials
                MDPI
                1996-1944
                22 August 2018
                September 2018
                : 11
                : 9
                : 1497
                Affiliations
                [1 ]Centre for Precision Engineering, Harbin Institute of Technology, 92 West Dazhi Street, Nan Gang District, Harbin 150001, China; bennyqu007@ 123456yahoo.com (D.Q.); brucexjd@ 123456hit.edu.cn (J.X.)
                [2 ]Manufacturing Department, 618 Flight Automatic Control Research Institute, 92 Dianziyi Road, Yanta District, Xi’an 710065, China; zzbfactory@ 123456facri.com (Y.F.); 15765517664@ 123456163.com (Z.C.)
                Author notes
                [* ]Correspondence: zp@ 123456hit.edu.cn (P.Z.); bradywang@ 123456hit.edu.cn (B.W.); Tel.: +86-186-4607-5897 (P.Z.); +86-0451-8646-5244 (B.W.)
                Author information
                https://orcid.org/0000-0002-2845-6937
                Article
                materials-11-01497
                10.3390/ma11091497
                6164806
                30131477
                c6eb484e-4a26-4285-afe1-5ed22df2d0b0
                © 2018 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 29 July 2018
                : 20 August 2018
                Categories
                Article

                mechanical properties,tool wear,tensile test,micromilling,mqcl method,cooling effect

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