Currently one of the most important tasks of industrial enterprises is fulfilling the required quality of the products. This article is focused just on surface roughness, because product quality is an extensive concept. To obtain the desired product shape and dimensions, a cutting tool must remove the necessary volume of chips. The cutting tool and process conditions also affect the surface roughness during the machining process. The effect of the cutting edge radius on the roughness is studied during the experiment. The cutting tools have modified microgeometries. There are six cutting tools with cutting edge radii of 15 μm; 20 μm and 25 μm. The roughness measurement was performed using the non-contact method on an IGM G4.

The cutting edge radius of a cutting tool plays a significant role in its durability. Durability is even more important when heavy duty materials are machined, including nickel alloy Inconel 718. The tool's durability influences the overall efficiency of the cutting process, both technically and economically. This paper investigates the effects of the cutting edge radius on the final cutting forces generated when milling Inconel 718. The cutting edge radiuses are 15 µm; 20 µm and 25 µm. A three-component dynamometer was used for measuring the cutting forces, which were measured in the X; Y and Z axes. The force measurement was related to the cutting edge wear (VBB) of the clearance surface.

This article deals with the experimental grinding of Inconel 718. This material is used for highly stressed components in the nuclear industry, such as combustion turbines. The material is very problematic for machining due to its rapid hardening and high heat generation. Two types of Inconel 718 in the form of testing bars were finished by cylindrical grinding using different cutting conditions and strategies. The main aim is to determine the impact of grinding conditions on the surface quality in terms of surface roughness after grinding. The resulting surface was scanned using an opticalscanning device to observe the topography of the ground surface. The grinding wheel was measured after grinding each bar to observe the wheel wear and the changes of the grinding wheel shape. The spindle load was monitored during grinding to see the effect of different strategies on the grinding process. The results from this work will be used in further studies and contribute to a better understanding of grinding Inconel 718.

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