Influence of the Coated Carbide Grade on the Cutting Tool Life When Machining Inconel 718

Abstract

This article deals with the machining of Inconel 718 alloy. In the research, several carbide milling tools with different carbide grades and coatings were used. The main aim is compare all cutting tools in terms of their cutting tool life during machining super alloy Inconel 718. This material is used for highly stressed components in the nuclear industry, such as combustion turbine. Due to its rapid hardening and high heat generation, it is very problematic to machining. The right choice of appropriate carbide grade is necessary to achieve high-quality cutting wedge, which is important for good adhesion of the coating. The results of this work will be used for further research and development of cutting tools for machining Inconel 718.

Effect of the Cutting Tool Geometry on the Tool Wear Resistance When Machining Inconel 625

“…Changes in entering edge angle during machining resulted in changes in the force distribution along the cutting tool edge as well as in the notch wear intensity. The entering angle of edge κ r was determined for the selected cutting depth according to formula (1), see table 2 [2,3,6,12].…”

“…By a suitable combination of these parameters, materials such as nickel alloys can be machined with high process efficiency and tool wear characteristics which is controlled and predictable [2,7,14]. …”

Machining of Inconel 718 Using Uncoated Cutting Tools With Different Cutting Edge Quality

“…However, it is also characterized by its poor machinability. A cutting tool is negatively affected by the high resistance of the material and deformation hardening during the cutting process [2,3]. Therefore, it is necessary to develop new cutting tools for effective machining of Inconel 718.…”

Effect of the Cutting Tool Geometry on the Tool Wear Resistance when Machining Inconel 625

“…Changes in entering edge angle during machining resulted in changes in the force distribution along the cutting tool edge as well as in the notch wear intensity. The entering angle of edge κ r was determined for the selected cutting depth according to formula (1), see table 2 [2,3,6,12]. The durability of the cutting insert was selected as the criterion for assessing the effect of the angle of the main edge and the selected geometry of the cutting insert on Inconel 625 machining process.…”

“…By a suitable combination of these parameters, materials such as nickel alloys can be machined with high process efficiency and tool wear characteristics which is controlled and predictable [2,7,14]. The formula for calculating the angle of the main edge κ r , depending on the selected depth of cut [11].…”