چكيده به لاتين
A286 alloy is an iron-based superalloy with desirable mechanical and chemical properties that has high strength, corrosion, oxidation, and heat resistance. Since the chemical composition of this alloy is very similar to austenitic stainless steel, so they have a similar machining behavior. This alloy is widely used in gas turbines, jet engines and turbine blades. This study aimed to investigate the effect of high-pressure coolant parameters on the turning process of A286 superalloy. The advantages of the high-pressure cooling method are facilitating chip breakage due to high pressure of the cutting fluid, reducing tool wear, reducing the cutting zone temperature, increasing the tool life, and productivity of the process. The input parameters to be evaluated include nozzle position, number of nozzles, coolant's pressure and simultaneously the cutting parameters. The experimental design was performed using the Benken Box surface response method. The outputs evaluated are the roughness of the workpiece surface, the mechanism, and the type of tool wear in the turning process of A286.
According to the results, the flank wear has been reduced in the flank face cooling mode. The lowest surface roughness obtained at the pressure of 120 bar, the feed rate of 0.03 rev/min, and the cutting speed of 112.5 m /min. The lowest crater area performed at the pressure of 160 bar, feed rate of 0.1 rev/min, and the cutting speed of 75 m / min.
