Özet:

An important parameter that can improve the performance and working life of the 100Cr6 bearing steel, which is commonly used in bearing manufacturing, and the machine parts it interacts with is surface roughness. There are many factors that affect to surface roughness. It is very important that the suitable cutting condition values of these factors are known and machining under these conditions. In this study, the surface roughness values of 100Cr6 bearing steel were turned under mineral based lubrication and optimum values of different three parameters were determined. The Taguchi method is used because it is known that it saves time and cost in experiments and helps to determine the results correctly. Signal-to-noise (S/N) ratios were used in experiments that Taguchi L9 orthogonal array was applied for evaluation of the results. Verification experiments were carried out by determining optimum surface roughness values with Taguchi method. Optimization of surface roughness for turning 100Cr6 bearing steel was determined successfully. The optimum machining parameters for the 100Cr6 bearing steel are 0.3 mm/rev (f) feedrate, 260 m/min (Vc) cutting speed and 50 ml/h (Q) flow rate.

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