Paper Title
IN END FACE MILLING, THE EFFECT OF DIFFERENT COOLING AND LUBRICATION CONDITIONS ON THE CUTTING PERFORMANCE AND SURFACE INTEGRITY OF THE SUPERALLOY INCONEL 718Abstract
Superior thermal and mechanical qualities are shared by the nickel-based superalloy Inconel 718. However, it is difficult to manufacture, and significant heat is produced while processing. Its cutting performance and surface integrity may be drastically improved with proper cooling and lubrication (CL) techniques. Here, Inconel 718 is cut using four distinct techniques—dry cutting (DC), flood cutting (FC), cryogenic cutting (CC), and cryogenic minimal quantity lubrication cutting (CMQLC)—all with the identical settings. Measuring the cutting forces, temperatures, tool wear, chips, Ra, microstructure, and RS. The results show that processing is improved with the addition of CL. Compared to DC, CMQLC yields an average temperature that is 55.47% cooler. When the CMQLC procedure is compared with FC, the resulting workpiece shows a 25% reduction in tool chipping area and a 32.05% reduction in surface Ra—the lowest values of the four approaches.
In terms of RS, while the TRS went up by 7.9%, the MCRS went up by 3.9%, and the influence depth in the subsurface went up by 10.2%. It is also possible to achieve a more desirable RS state under machining conditions with a high mechanical thermal ratio. Overall, the CMQLC demonstrates the benefits of low pollution levels, high cutting efficiency, and excellent material preservation on the surface of the workpiece. Cutting performance, surface integrity, and cryogenic minimum amount lubrication are all terms that have been studied in relation to Inconel 718.
KEYWORDS : CMQLC, superalloy,