Micromilling is a machining process used in the fabrication of microscopic components and features. Tool wear in micromilling can be indirectly measured through the dimensions of the microslot, however the presence of burrs may cause imprecisions in this measurement. Inconel 718 is a nickel-based superalloy that is frequently reported to exhibit large burrs when micromilled. The abrasive deburring method is a simple, versatile and inexpensive technique for removing burrs in microcomponents.

more »

... , this work aims to evaluate the influence of abrasive deburring in tool wear measurement on precision features of Inconel 718. Four samples, each one with 12 microslots 400 𝜇m wide and 40 𝜇m deep, were deburred with silicon carbide sandpaper sheets with mesh sizes 800, 1200, 2000 and 3000 during a fixed time of 30 seconds and a constant spindle speed of 120 rpm. The results showed that the presence of burrs leads to values of tool wear with greater standard deviations in comparison with the deburred samples. Moreover, the chosen deburring method proved to be efficient in reducing burr heights in microslots of Inconel 718, without any significant damage to the surface quality of the samples, favoring the indirect wear measurement.