TY - JOUR ID - 32017 TI - Surface Quality in Dry Machining of 55Cr3 Steel Bars JO - International Journal of Iron & Steel Society of Iran JA - IJISSI LA - en SN - 2981-0388 AU - Safari, M. AU - Joudaki, J. AU - Emadi, M. AD - Department of Mechanical Engineering, Arak University of Technology, Arak 38181-41167, Iran AD - Department of Mechanical Engineering, IAU-Khomein branch, Khomein, Iran Y1 - 2018 PY - 2018 VL - 15 IS - 1 SP - 33 EP - 39 KW - Dry machining KW - Surface quality KW - 55Cr3 steel KW - Design of experiments DO - N2 - Lubricant and coolant can improve surface roughness in machining. In addition of ecological harms, thermal shock of coolant or lubricant may affect the surface integrity especially on surface residual stresses and micro-crack nucleation. Dry machining is ecologically desirable and it is considered as a necessity for manufacturing enterprises in the recent years. 55Cr3 steel grade is steel with high strength and very poor   machinability. Therefore dry machining can provide good surface qualities in turning process of 55Cr3 steel bars. In this article, the effects of turning parameters (spindle speed, feed and depth of cut) on surface roughness variation will be investigated. The surface roughness was measured in straight turning and face turning processes. The Taguchi method was implemented for experiments designing and analyzing the measurements.  The results showed that in order to obtain an optimum condition for dry turning of 55Cr3 steel bars, Ra, Rq, Rt, RSm and RSk should be analyzed simultaneously. UR - https://journal.issiran.com/article_32017.html L1 - https://journal.issiran.com/article_32017_700273249f2d73fb9e18e08865947670.pdf ER -