PK Bardhan, S Patra and G Sutradhar
Keywords: Sintered components, response surface, central composite design.
Abstract: In the present study an attempt has been made to investigate the machinability of Powder Metallurgy components. According to the literature review on this topic it has been found that very little effort has been expended so far on studying the effect of machining parameters and process variables on the machinability of Powder Metallurgy components. So it was felt necessary to carry out a systematic study of the above parameters and processes of Powder Metallurgy components. These investigations were based on Design of Experiments Technique in order to achieve optimum machinability of such components. Compacting pressure, sintering temperature and sintering time are considered as the controllable process parameters and cutting forces as the response variable. A second order response surface model (RSM) has been used to develop a predicting equation of cutting force based on the data collected by a statistical design of experiments known as central composite design (CCD). The analysis of variance (ANOVA) shows that the observed data fits well into the assumed second order responses surface model.
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