EFFECT OF COOLANT ON GRINDING OF15%Al/SiCp COMPOSITES
Abstract
Metal matrix composites are the emerging materials due to their ability to obtain the required mechanical properties with sufficient strength and lightweight. This accelerates the transfer of use of aluminum alloys to aluminum matrix composites. Even though metal matrix composites are manufactured with near net shape processing techniques, still it requires a number of secondary operations. Grinding is the final finishing process which is employed to produce close dimensional accuracy, smooth surface finish quality and reliability than other machining process. For soft materials, the grinding process is not recommended for machining because machining of soft materials like aluminum produces clogging of materials on the wheel. Since the grinding of soft aluminum metal matrix reinforced with SiC composites materials may also exhibit similar phenomenon. The wheel loading affects the forces and surface finish of the work piece; it also produces centrifugal stresses in the grinding wheel. So it was decided to study the wheel-loading phenomenon, various forces and Surface Roughness in dry and coolant condition. In this study the influence of various grinding wheels like Silicon carbide (SiC), Cubic Boron Nitride (CBN) and Diamond on the grinding of metal matrix composites (Al/SiCp), and the various input parameters are wheel speed, work speed, and depth of cut and No of passes.
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References
.Clyne.T.W, and Withers.P.J, (1993), An introduction to metal matrix composites, Cambridge University press.
.Nee.A.Y.C and Tay.A.O,(1981), On the measurement of surface grinding temperature, Int.J.Mach.tool.Deg.Res.Vol 21, No34, pp 279-291.
. Di.Ilio.A, Paoletti.A, Tagliaferri.V, and Veniali.F, (1996), A experimental study on grinding of silicon carbide reinforced aluminium alloys, Int.J.Mach, Tools Manufacturing, Vol 36, No 6, pp 673-685
. Komanduri.R, (1975), The mechanism of metal built up on aluminium oxide abrasive, wear, 33, pp 191-196
. Yossifon.S, and Rubenstein.C,(1982), Wheel wear when grinding workpieces exhibitinghighadhesion, Int.J.Mach.Tool.Des.Res, Vol 22, No 3, pp 159-176.
. Hwang.T.W, Evans.C.J, and Malkin.S,(2000), High speed grinding of the silicon nitride with electroplated diamond wheels, Part 2-Wheel Topography and grinding mechanisms, Transaction of the ASME, Vol 122, pp 42-50.
. Marinescu.L.D, Dimitrov.B, Gheorghiu.Z and Grigorescu. Al,( 1983), Some aspects concerning wear and tool life Diamond wheels, Annals of the CIRP,Vol 32/1, pp 251-254.
. Razali.S.M, Suto.T, Waida.E, and Noguchi.H, (1992), Creep feed grinding of advanced ceramics, Proc Inst. Mech.Engrs, vol 206, pp 93-99.
. Triemel.J, (1974), Grinding Cubic boron nitride, 14th MTDR conference, pp 645-651.
.Malkin. S, ‘Burning limit for surface and cylindrical grinding of steels, Annals of the CIRP Vol. 27/1/1978. pp233-236.
.Kovach J.A and Malkin. S, ‘Thermally induced grinding damage in super alloymaterials, Annals of the CIRP Vol. 37/1/1998. pp309-313.
. Malkin S. Grinding Technology – Theory and Application of Machining with abrasive,Ellis Haward Ltd., 1989.
. Di.Ilio. A, Paoletti. V, Tagliaferri and Veniali F, ‘An experimental study on grinding of Slicon carbide reinforced aluminium alloys’. Int. J. Mach tools Manufacture, Vol.36,No.6, pp673- 685,1996.
.Sundaram. S, Karthikeyan. R,Naagarazan. R, Anantharaman . N and Pai B.C, ‘A Study on the influence of cutting parameters in grinding Al/SiCp composites.proceedings of International
Conference on Manufacturing, Bangaladesh, pp 29- 338, 2000.
. Sundaram S and Anantharaman . N, ‘Temperature and wheel loading in grinding of Al/SiCp composites, National seminar in Advances in Integrated Manufacturing systems,MIT, Chennai, pp 140-149. 2001.
. Srivastava A. K, Sriram. K and Lal G. K, ‘ A Simple analysis for evaluating Grinding wheel loading”. Industrial Journal Machine Tools Manufacturing Vol. 28, No.2, PP 181 – 190, 1988.
