The need for enhancement of metal cutting tools has led to increasing interest in non-metal cutting tools materials that would be more efficient than conventional carbon steel. In particular, various carbides and alumina-based (Al2O3) ceramics are notable for their great toughness and durability.
Nevertheless, optimization of surface roughness parameters and decrease in tool wear remain the problem confronting manufacturers who wish to utilize ceramic metal cutting tools in their production cycles.
In the course of experiments and analyses, several methodologies were used. In particular, the Taguchi techniques and Pareto ANOVA may be specifically mentioned here. The author opted to establish correlations between such parameters as circularity, diameter error, and the surface finish achieved with the use of respective tool. To this end, a CNGA 120408T01020 650 CNMG 432A-3J SP4036 ceramic carbide cutting tool was used. Together with other supporting devices, it was tested at four levels: for cutting material, cutting speed, feed rate and depth of cut.
In total, 16 experimental runs were conducted, with 16 diverse parameter combinations running on each component. The correlations between surface finish, circularity and diameter error were promptly established, with respective analysis of variation and regression rates provided in the study paper.
The results of the study attest to inverse correspondence between surface finish and feed rate; carbide cutting tools were found to be characterized by higher surface finish quality than the respective ceramic cutting tools. On the other hand, diameter error rate was more observable in the case of carbide tools being used, and circularity increased with the use of ceramic tools. From these data, further conclusion on relative advantages of ceramic and carbide tools and the need of their combining may be drawn.