Abstract
An experimental investigation based on the Taguchi orthogonal array was conducted to analyze the effects of cutting parameters on machined surface roughness Ra for nickel-based superalloy FGH97. The influence order and significance of processing parameters that affect Ra were determined according to variance analysis. Machined surface roughness prediction model has been constructed based on experimental results. Cutting speed has the greatest influence on the surface roughness of the workpiece. The effect of depth of cut on the surface roughness is not obvious, but the surface roughness will be larger when the depth of cut exceeds 0.20 mm. The effect of width of cut on machined surface roughness is negligible.
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