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Purpose: Maching of difficult to cut materials like Inconel 718 is a difficult task. The purpose of the research was to machine Inconel 718 nickel based material by milling process applying vegetabled oil by minimum quantity lubrication (MQL). MQL helps to use limited supply of coolant in order to minimise waste and it is environmental free. Design/methodology/approach: The experiments was carried in a vertical milling machine with super hard cobalt tool. The experiments were carried by various cutting parameters like cutitng speed, feed rate and constant depth of cut. The MQL considered was 12.5, 25 and 37.5 milli litre per hour (ml/hr). The MQL was vegetable oil used for cooking purpose. The experiments were with on MQL and dry milling. Findings: The supply of 37.5 ml / hour produced low surface roughness than 12.5 and 25 ml/hr. As the length of time was increased, the surface roughness increased due to tool wear. The surface roughness was affected by 32.65 % and tool wear affected by 29.2 % between low and high supply of MQL. The super cobalt tool has given more life by MQL than dry milling. The cutting speed of 20 and 30 m/min produced more flank wear than by 10 m/min for the same feed rate and given depth of cut. Research limitations/implications: There was no formation of built up edge at tool due to reduction in the heat and flushing of the chips away from the tool edge. The MQL can able to subsidize the heat generataed. Originality/value: The originality of this paper lies with conducting experiments and finding optimum operating parameters. The other researches can have this as reference
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Rocznik
Tom
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38--44
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Bibliogr. 17 poz.
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autor
autor
autor
- Faculty of Mechanical and Manufacturing Engineering, University Tun Hussein Onn Malaysia 86400, Parit Raja, Batu Pahat, Johor, Malaysia, sivamanii8655@yahoo.com
Bibliografia
- [1] Y. Kamata, T. Obikawa, High speed MQL finish turning of Inconel 718 with coated tools, Journal of Materials Processing Technology 192-193 (2007) 251-256.
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- [3] S.A. Alaxender, A.S. Varadarajean and P.K. Philip, Hard turning with minimum cutting fluid: a viable green alternative on the shop floor, in: Proceedings of the 18th AIMTDR, Kharagpur, 1998, 152-155.
- [4] Y. Kamata T. Obikawa, High speed MQL finish- turning of Inconel 718 with different coated tools, Journal of Materials Processing Technology 192-193 (2007) 281-286.
- [5] N. Richards, D. Aspinwall, Use of ceramic tools for machining nickel based alloys, International Journal of Machining and Tool Manfacturing 294 (1989) 575-588.
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- [7] I.A. Choudhury, M.A. El- Baradie, Machinability of nickel -base super alloys: a general view, Journal of Materials Processing Technology 77 (1998), 278-284.
- [8] WG. Zang, Titanium alloys and their machinability with coated carbide inerts, Ph.D, Thesis, South Bank Unveristy, London, UK, 247, 1997, 127-30.
- [9] E.O. Ezugwu, Z.M. Wang, Performance of PVD and CVD coated tools when nickel-based machining Inconel 718 alloy, Progress of cutting and grinding,. 111 (1996) 102-107.
- [10] L. Li, N. He, M.Z.G. Wang, High speed cutting of Inconel 718 with coated carbide and ceramic inserts, 129 (2002) 127-130.
- [11] W.S. Lin, The study of high speed fine turning of austenitic stainless steel, Journal of Achievements in Materials and Manufacturing Engineering 27/2 (2008) 191-194
- [12] X.L. Liu, D.H. Wen G. Yan, Experimental study on turning of hardened GCr15 steel with PCBN tool, Journal of Materials Processing Technology 129 (2002) 217-221.
- [13] S. Thamizhmanii, S. Saparudin S. Hasan, Analyses of surface roughness by turning process using Taguchi method, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 503-506.
- [14] W. Konig, M. Kliner R Link, Machinin hard materials with geometrically defined cuttin edges.Field of applications and limitations Annals CIRP 49 (1990) 61-6.
- [15] M.A. Davies Y. Chou C.J. Evans, On chip morphology tool wear and cutting mechanics in finish hard turning, Annals CIRP 45 (1996) 77-82
- [16] E.O. Ezugwu, K.A. Olajire A. Jawaid, Wear performance of multiplayer -coated carbide tools, Machining Science and Technology 5/1 (2001) 115-119.
- [17] L.A. Dobrzański, K. Gołombek, J. Mikuła, D Pakuła, Improvement of tool materials by deposition of gradient and multilayers coatings, Journal of Achievements in Materials and Manufacturing Engineering 19/2 (2006) 86-91.
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Bibliografia
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bwmeta1.element.baztech-article-BSL8-0030-0005