Abstract
ABSTRACT Hard turns in machining present substantial obstacles to chip removal. An effective heat management system is needed to avoid tool overheating and reduce cutting capacity. Therefore, the present investigates the effectiveness of a comparative study of four cooling methods, such as dry turning, minimum quantity lubrication (MQL), cryogenic (LN2), and the hybrid Cryo-nMQL approach, on machining performance during the machining of SS904L alloy. Machining conditions included 75 and 150 m/min cutting velocities and feed rates of 0.1 and 0.2 mm/rev, respectively. Results indicate that cryo-nMQL exhibited superior performance matched to the other cooling methods, with a maximum improvement of surface roughness by 57.73% and nose wear by 13.87%, flank wear by 67.48%, crater wear by 8.42%. In addition, chip production indicates a fine lamella structure with less serration under cryo-nMQL. In addition, the combination of cryo-nMQL resulted in enhanced tool life and a notable decrease in tool wear with a research gap, indicating future work to assess the benefits of hybrid cooling methods in SS904L machining, thereby showcasing the potential of these innovative technologies in mechanical engineering applications.
Published Version
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