An In-Depth Analysis on The Surface Roughness Variations During Turning of GGG50 Ductile Cast Iron

Abstract

GGG50 ductile cast iron finds application area in automotive industry primarily especially for production of the part of tracks and tractors. Machinability of these special materials is of great importance since the cast iron requires final shaping to achieve better surface quality. Surface roughness is accepted as a performance criterion among surface quality indicators as per it reflects the variations with peaks and valleys according to the machining parameters. Therefore, this study focuses on the influence of basic turning parameters on the average surface roughness during dry machining of the GGG50 material. The evaluation was carried out based on statistical analysis, graphical presentation and optimization approach. The analysis results showed that feed plays a key role on the surface roughness variations with the contribution rate about 70.8 %. To obtain the best surface quality, cutting parameters should be selected as 0.16 mm for cutting depth, 0.2 mm/rev for feed and 60 m/min for cutting speed respectively. This study aims to find the best turning conditions for an industrial material by discussing the importance of fundamental turning parameters.