Browsing by Author "Aweda, J.O."

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    Comparative Analysis of AISI 1050 Steel Using N5-Soluble Oil and Arachis Oil in Metal Cutting Operation
    (Proceedings of the 30 th AGM and International Conference of the Nigerian Institution for Mechanical Engineers. Hosted by The Nigerian Institution of Mechanical Engineers, Kaduna, Nigeria, 24 th - 27 th , October, 2017., 2017-10-27) Abdulkareem, S.; Ogedengbe, T.S.; Aweda, J.O.; Khan, A.A
    The use of coolant during cutting processes does not only help in the improvement of surface integrity and increase in tool life, but it also facilitates the conservation of energy due to reduction in power consumed during the process. However, some of these coolants affect human health negatively, hence there is need to consider alternatives. The influence of N5- soluble oil and Arachis oil on machinability of carbon steels is reported in this paper. The performance of the use of soluble oil and Arachis oil using flooded cooling approach was investigated in with interest on their effects on temperature at cutting zone, surface roughness, chip formation and material removal rate. The experimental runs were designed using Taguchi L18 orthogonal array using Minitab version 16 and temperature at the cutting zone was monitored using a digital thermometer and a k-type thermocouple wire. Analysis of experimental results was done with focus on percentage contributions of various factors affecting surface roughness and material removal rate and chip profile. It was observed that, the use of Arachis oil as cutting fluid produced a surface finish of 35% improvement compared to soluble oil. Additionally, the chips formed using Arachis oil as coolant is more ductile and continuous than those obtained using N5soluble oil.
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    Effect of Coolant Temperature on Machining Characteristics of High Carbon Steel
    (Covenant Journal of Engineering Technology, 2018-03-05) Ogedengbe, Temitayo S.; Abdulkareem, S.; Aweda, J.O.
    This paper reports on the effect of coolant temperature on machining of high carbon steels. The development of a cooling system to reduce the temperature of water soluble coolant to 7.9oC from ambient temperature was employed in this work to improve the machining performance. The experiments were performed using cooled and ambient temperatures by employing Taguchi L18 orthogonal array to design the experimental runs. The cutting speed, feed rate and depth of cut were the machining parameters used; while the tool-work piece interface temperature was monitored using a digital thermometer with k-type thermocouple wire. The selected control factors are material removal rate and surface roughness. The experimental results were analyzed using Minitab 16. The main effects and percentage contributions of various parameters affecting surface roughness and material removal rate were discussed, and the optimal cutting conditions were determined. It was observed that surface finish improved by 65% with the use of the developed cooled system. The reduction in coolant temperature played a vital role in improving surface finish during machining high carbon steels.