Effect of tool material on tool wear and delamination during machining of particleboard

The tool material and the parameters of machining are the main conditions which decide the quality of particleboard surface. The objective of the study was to investigate the wear of a carbide cemented bit and high-speed steel bit during machining of melamine-faced particleboard. Analysis of variance (ANOVA) was implemented to find the significance of the effect of machining parameters and tool wear on the value of the delamination factor A (del). The delamination factor A (del) is defined as the ratio of area of delamination (mm(2)) to the measured length of the test piece (cm). To determine the durability of the cutting tool a geometric criterion was adopted, i.e., maximum wear of the tool flank. We observed a clear impact of cutting speed on the length of the tool life. This relation was manifested as a decrease in the tool life with increasing cutting speed. It was also found that a reduction in the cutting speed increases the area of delamination, leading to an increase in the value of the A (del) factor. It was especially visible for higher values of tool wear. In the case of feed per tooth we observed no clear effect on intensifying the delamination phenomenon.