Machinability investigation of Incoloy 825 in high-speed turning under dry conditions

Abstract

The superalloys are hard to machine materials used in critical applications such as aeronautics and aerospace sectors. One of the most important parameters of the machinability tests is the surface roughness values, which enable us to determine the specific properties of the material measured from the surface of the materials being machined. So, this study proposes to advance a depth understanding of surface roughness evolution, of Incoloy 825 material, when is submitted to machining process. The machinability of Incoloy 825 superalloys were investigated by varying different high-speed machining parameters. Three different cutting tools (I, II and III), three different speeds (500, 1000 and 2000 m/min) and three different feed rates (0.1, 0.2 and 0.4 mm/rev) were chosen as parameters. The surface quality, chip formation and tool wear outputs of the Incoloy 825 machined workpiece were analyzed and optimum machining parameters were determined. The results indicate that the key parameters impressing the surface roughness, of the Incoloy 825 superalloy, are the cutting speed and feed rate, respectively. Further, the cutting tools investigated have not had a material impact on the surface roughness. The accelerated tool wear is driven by the cutting speeds as well. An overview of the results achieved in this study indicate that the optimal surface roughness value is reached when the following parameters are imposed: tools type: II, cutting speed: 1000 m/min and feed: 0.1 mm/rev.

Multi-response optimisation of wire-arc additive manufacturing process parameters for AISI 4130 steel during remanufacturing process

“…The eigenvalues, denoted as , j were estimated using PCA in the statistical software Minitab LLC ® 2023 with the aid of the governing equations (7)- (10). The outcomes are presented in table 13 together with the scree plot in figure 10.…”

“…Conventional manufacturing procedures are time-consuming and expensive [6]. These demands the experience of the engineers and designers to influence the product quality [7][8][9][10]. Time and high production costs of conventional methods have a notable negative impact on the efficiency of repairing broken parts.…”