iosr-JMCE   Volume-11 ~ Issue-1 ~ Jan-Feb 2014

Abstract: Final machining of 34CrMo4 steel with roller burnishing tools is shown in this paper. Roller burnishing process is clean and environmentally friendly machining process which can replace other finishing processes with pollution effects. Experimental tests on specimens prepared for final machining process estimates the rate of roughness decrease, and diameter increase. Roughness data measured before and after roller burnishing process have been compared. Roughness ratio (before/after process) and decrease factor for surface quality improvement can be up to 10. Presented smoothing process can be performed on standard machine tools without additional reconfiguration tasks. Process is very versatile for any workshop and can be conducted without coolant.

Keywords: Machining, Roller burnishing, Surface roughness

[1]. Ravindra Babu, P., Siva Prasad, T., Raju, A.V.S. , Jawahar Babu, A. ,2009, Effect of internal roller burnishing on surface roughness and surface hardness of mild steel, Journal of Scientific & Industrial Research, Vol 68, p. 29-31
[2]. Kukielka, L., 1989, Designating the field areas for the contact of a rotary burnishing element with the rough surface of a part, providing a high-quality product, Journal of Mechanical Technology 19 ,p. 319–356.
[3]. Thamizhmanii, S., Saparudin, B., Hasan, S., 2007, A study of multi-roller burnishing on non-ferrous metals, Journal of Achievements in Materials and Manufacturing Engineering, Vol. 22 nr. 2, p. 95-98

Abstract: Energy is the prime mover of economic growth and is vital to the sustenance of a modern economy. India ranks sixth in total energy consumption and needs to accelerate the development in this sector to meet its growth aspiration. Hence alternate fuels are needed to be produced. Present paper deals with preparation of bio-fuel from Vegetable oil, Mahua oil and Blending of vegetable oil with mahua oil. There by conducting Performance tests for alternate fuels, comparing the efficiency and cost estimation. From the experimentation it is found that the optimum performance is achieved with Blended Bio-diesel at 70:30 ratios of palm and mahua Bio-diesels in comparison with conventional diesel considering engine performance parameters.

KeyWords: Blending, Mahua oil, Sustenance.

[1]. Dr.Rambabu, V., 2011, "Experimental Investigation on the Performance, emission and combustion characteristics of DI Disel Engine with Linseed methyl Ester along with Methanal Carburization‟, M.Tech. Thesis, Thermal Engg,NIT Warangal .
[2]. [2] Prasada Rao, K., 2011, "Experimenta Investigation on the Performance of DI Disel Engine with Mahua methyl Ester along with Methanal Carburization‟, M.E.Thesis,industrial engineering ,AU Visakhapatnam .
[3]. Ramesh Babu,P.,2011, "Experimental Investigation of Performance characteristics on VCR-DI- Disel Engine fueled with coconut methyl Ester and DI-ethyl ether as an additive‟, M.Tech. Thesis, Thermal Engg,GMRIT Rajam.
[4]. Venkata Ramesh, M and Mallikarjun, M , 2012, "Biodiesel Production from palm oil by Transesterification Method‟, I. Mech. Engg Sc., 895(8),0975-833X
[5]. Pugazhvadivu, M and Sankaranarayanan, G , 2010, "Experimental studies on a diesel engine using mahua oil as fuel‟, I. Mech. Engg Sc., 787(7),0974-6846.

Abstract: In this study a five station unpaced production line with Exponentially distributed operation time with no buffer capacities is consider. A practical situation where five operation times are to be assigned on five station is investigated. Assuming that precedence restriction are minimal the operation can be permitted on stations. A number of data set with different kind of imbalance and with different degree of imbalance have been used for arriving at important conclusions. Operations on the production rate of the line is studied.This result in 60 different assignment operation on stations. The effect of such ordering on production rate is studied by calculating the percent improvement in production rate that is possible by following the best assignment over that with worst assignment. It is seen that the effect is highly significant at moderate degree of imbalance.

Keywords: Unpaced Production/Assembly line, Production rate, degree of imbalance, five station

[1]. Hiller. F.S. and Boling, R.W (1966). " the effect of some design factor on the efficiency of production line with variable operation time" J. Ind. Engg. , 17, 651
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[3]. Yasmashina, H, , and Okamura, K(1983). " Analysis of in process buffer for multistage transfer line system." Int. J.Prod. Res. 21, 183.
[4]. Kunter, S. Akbay (1996), " using simulation optimization to find the best solution," Ind. Engg. Solution 28, No 5.
[5]. R. Pike & G.F. Martin (1994) the bowl phenomenon in unpaced line to large production". Int. J.Pood. Res. 32,483.
[6]. R.A. Johnson " Probability Densities" Proceeding of the Seminar on "Probability and statistics for engineers‟ New Delhi, 1996, Chapter 5, P137
[7]. E. Balagrusamy "Numerical Methods‟ tata Mc Graw Hill, New Delhi, 1999.

Abstract: In today's competitive world of manufacturing and machining, drilling process plays a vital role. Drilling of hole with minimum time, along with maintaining accuracy of hole is important. For assembly and sliding motion of shaft in hole, hole finishing also became significant. So for drilling operation, now a day's surface finish and accuracy of hole are new challenges for industry. Paper will deal with above mentioned requirements viz. surface finish and hole accuracy for EN 31 as widely used material with selected input parameters as speed, depth of cut, feed and type of tool. Confirmation of input parameters is done by review of literature, and optimums setting are made by taguchi's design after performing experimentation, followed by ANOVA and regression analysis, for optimization of surface finish speed, feed and type of tool found significant with values of 30m/min, 0.2 mm/rev., HSS respectively. For optimization of hole accuracy speed, feed, type of tool and drill depth found significant with values of 30m/min, 0.2 mm/rev., HSS + TiN, 20mm respectively. Result will be useful for manufacturing industries for maintaining higher surface finish and accuracy for dry drilling process for EN 31 material.

Keywords: ANOVA, DOE, Drilling, Hole Accuracy, Regression, Surface Finish, Taguchi Method

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[4]. Phadke MS (1989) Quality engineering using robust design. Prentice-Hill, Englewood Cliffs, NJ
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[6]. Zhao H (1994) Predictive models for forces, power and holeoversize in drilling operations. PhD thesis, University of Melbourne, Australia