Effect of Cutting Parameters on Tool Wear, Surface Roughness and Material Removal Rate during Dry Turning of EN-31 Steel

Sudhansu Ranjan Das, Amaresh Kumar, Debabrata Dhupal


Aspects such as tool life and wear, surface finish, cutting forces, material removal rate, power consumption, cutting
temperature decide the productivity, product quality, overall economy in manufacturing by machining and quality of
machining. The present paper is an experimental study to investigate the effect of cutting parameters (cutting speed, depth of
cut and feed) on tool wear, surface roughness and material removal rate (MRR) during dry turning of EN-31 steel. Turning
experiments were conducted with cutting speeds: 250, 300, 350 m/min, feeds: 0.15, 0.2, 0.25 mm/rev and depth oh cuts: 0.5,
1.0, 1.5 mm. The experimental layout was designed based on the Taguchi’s L9 (34) Orthogonal array technique and analysis of
variance (ANOVA) was performed to identify the effect of the cutting parameters on the response variables. The results
revealed that cutting speed (61.17%) is only the significant parameter on tool wear. On the other hand, cutting speed (59.42%)
was found to be the dominant parameter among controllable parameters on surface roughness followed by feed (24.3%).
However, depth of cut (78.8%) only showed significant parameters for material removal rate (MRR). Finally, the relationship
between cutting parameters and the performance measures (tool wear, surface roughness and material removal rate) were
developed by using multiple regression analysis.


EN-31 steel, tool wear, surface roughness, MRR, Taguchi method, regression analysis.

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