Microscopic Wear Analysis of Indexable Inserts after Machining of 34CrNiMo6 Steel

Abstract

Machining is an important part of the manufacturing process in the engineering field. Turning is one of these areas. At present, almost exclusively exchangeable cutting inserts are used in production machining. The article describes the research in the field of their wear, where the electron microscopy was used to evaluate the results. Electron microscopy is a very important aid in research in many areas not only of human activity and also is the important aid in the field of mechanical engineering and manufacturing technologies. The results thus obtained can make in a given area it clearer and better document the resulting situation. Within the experiments, selected cutting inserts (WPP10S, WPP20S) were used and the given material was machined (34CrNiMo6 steel). The cutting speed was different depending on the type of insert (WPP10S 120 and 140 m•min -1 , WPP20S 80, 100 and 120 m•min -1 ). The electron microscope Tescan Vega 3, which is available in the workplace where the experiment was conducted, was used to evaluate the resulting tool wear. As part of experiments was also realized the composition analyze of used cutting inserts. Analyzes of the machined material were also performed to confirm the declarations from the supplier.

Spark Plasma Sintering of Fine-Grained WC-Co Composites

“…Based on the analysis of the roughness parameters, a slight increase from the initial condition was observed. Based on the observation of the sinter surface (Figure 8a-c), it was found that the wear phenomenon was classic abrasive wear formed by scratches, pitting, plowing and furrowing [41,42].…”