Abstract:
The main focus of the research was to investigate the process of machining Inconel 718
alloy using a Tungsten Carbide tool with a diameter of 6mm. Inconel 718 is a challenging
material to machine due to its hardness and low thermal conductivity. The research aimed
to enhance the quality of the hole surface while drilling Inconel 718. To achieve this,
experiments were conducted using a Carbide tool under different cutting speeds, with
both dry and cryogenic cooling conditions. The quality of the hole surface was then
evaluated using SEM images and compared between the two conditions. The cutting
speeds used in the experiments were 700rpm, 900rpm, and 1100rpm.The results of the
experiments revealed that drilling Inconel 718 under dry conditions produced poor
surface quality due to the generation of heat during the process. On the other hand,
drilling under cryogenic conditions resulted in better hole surface quality. Additionally,
the thrust force during drilling was greater under cryogenic conditions compared to dry
conditions. These findings suggest that cryogenic cooling can be a useful method for
enhancing the hole surface quality when drilling Inconel 718, and this method can be
applied in industrial settings to improve the efficiency of the machining process.
