Experimental investigation of geometric tolerances in the machining process of AISI 4140 steel with minimum lubrication by ionic liquid BMIM-PF6

Ramezani Gahroui, Shahab; Abootorabi, Mohammad Mahdi

doi:10.22034/ijme.2026.544949.2131

Experimental investigation of geometric tolerances in the machining process of AISI 4140 steel with minimum lubrication by ionic liquid BMIM-PF6

Articles in Press

Document Type : Original Article

Authors

Shahab Ramezani gahroui ¹

Mohammad Mahdi Abootorabi ²

¹ Master’s degree graduate, Faculty of Mechanical Engineering, Yazd University, Yazd, Iran

² Associate Professor, Faculty of Mechanical Engineering, Yazd University, Yazd, Iran

10.22034/ijme.2026.544949.2131

Abstract

Research in the field of lubrication technology is always of interest to researchers. One of the new cases in recent researches is the study of the performance of ionic liquids as lubricants. Also, to reduce the amount of lubricant consumption in various processes, a system called minimum lubrication system is used. In this research, the performance of sunflower oil and also the combination of ionic liquid [BMIM] [PF6] with sunflower oil as a lubricant in the turning process of AISI 4140 steel with minimum lubrication has been investigated. In addition to the effect of changing the distance between the nozzle and the workpiece and the pressure of the MQL system was also investigated in the turning process. According to the obtained results, as the distance between the nozzle and the workpiece decreases, the effect of lubrication with ionic liquid increases compared to lubrication with sunflower oil. Also, the use of ionic liquid [BMIM] [PF6] as an additive to sunflower oil was able to reduce the circular and cylindrical tolerances of the work piece by 12 and 22%, respectively, compared to lubrication with sunflower oil.

Keywords

Turning

geometric tolerance

minimum quantity lubrication

ionic liquid

Subjects