INTERNATIONAL JOURNAL OF RESEARCH IN AERONAUTICAL AND MECHANICAL ENGINEERING ISSN (ONLINE): 2321-3051 Vol.3 Issue 12, December 2015 Pgs: 111-118 Sandeep Boora and Sandeep Kumar 111 EVALUATION THE EFFECT OF MACHINING PARAMETERS ON SURFACE TEMPERATURE OF MILD STEEL Sandeep Boora 1 and Sandeep Kumar 2 1 Student, Department of Mechanical Engineering , MIET, India 2 H.O.D, A.P, Department of Mechanical Engineering MIET, India. Abstract Turning is the removal of metal outside diameter of a rotating cylindrical workpiece. As it is used to reduce the diameter of the work piece in the form of chips formation. The optimization problem that seeks to identify the best process conditions or parametric combination to the manufacturing process, so in this study, the effects of different cutting parameters are studied in the cutting temperature of mild steel. In the beginning of D.O.E phase, pilot experiments will be performed for preliminary study. The various parameters, their ranges and levels will be selected based on results of the pilot study. Suitable Technique for orthogonal arrays will be used for design of experiments after the pilot experiments. Based on the findings study, experimentation work are designed and input machining parameters and their values finalized. The results are expected to show that the response variables (output parameters) strongly influenced by the control factors (input parameters). So, the results which are obtained after experimentation analyzed and modeled for their application in manufacturing industry. It is concluded that for Temperature to be minimum Cutting speed has to be at high level, Feed has to be at high level 3 & D.O.C has to be at high level. Key Words: Taguchi Design, Orthogonal Array, Turning, cutting speed, feed. 1. Introduction The first lathe machine that was developed was the two-person lathe machine which was designed by the Egypt in about 1300 BC. Primarily, there are two things that are achieved in this lathe machine tool. The first is the turning of the wood working piece manually by a rope; and the second is the cutting of shapes in the wood by the use of a sharp cutting tool., there have been constant modifications and improvements over the two-person lathe machine, most importantly on the production of the rotary motion. P. Zhou et al. (1995) [1] investigated in tool life in