Evaluation of Diamond Dressing Effect on Workpiece Surface Roughness by Way of Analysis of Variance

Abstract

Wheel dressing is an important action in the grinding process. This paper reports on the comparative study of the performance of two types of diamond dresser tool measured in terms of ground surface roughness. For experiments were used two types of dressers, single point and multi-point diamond dresser. In addition to the dresser tool, the wheel dressing speed and dressing depth were taken into account as dressing variables. Cutting conditions were a constant; the results of dressing were observed for bearing steel 100Cr6. The experimental study was designed using an orthogonal array and experimental data were processed by the analysis-of-variance method (ANOVA). The results show that with a 95% confidence, dressing with a multi-point diamond tool results in a smoother ground surface than with a single point diamond tool. As expected, wheel dressing speed and dressing depth also have significant effects on surface roughness. However, wheel dressing speed is much more influential than dressing depth.

Evaluation of Retained Austenite in Carburized Bearing Steel Using Magneto-Inductive Method

“…Transformation of RA in service causes dimensional instability of hardened bearing components. Hence, RA can be detrimental for the application requiring tighter tolerance, while more RA can be beneficial in the scenario mentioned earlier [5,[11][12][13][14][15]. Consequently, optimizing RA content to achieve the best combination of desired properties is important.…”

“…The magneto-inductive method has been extensively explored to measure ferromagnetic content in steel welds [25,26,[28][29][30][31]. Very few reports have attempted to focus on comparing this technique with other methods to detect RA content [14,18,27,[30][31][32][33][34]. Since the magnetic field generated by the Feritscope ® penetrates several millimeters deeper, it is considered to provide bulk quantification.…”