A STUDY OF CERMETS WEAR BEHAVIOR

The wear behaviour of cermet materials commercially available for cutt ing tool applications is investigated. Four insert types of diverse ce rmet compositions are used in dry face milling of steel AISI-SAE 1045 and in erosion tests under oblique and orthogonal impacting conditions . Results of the milling tests are discussed in terms of tool-life, fl ank and crater wear, and resistance to mechanical impacts. Results of erosion tests are discussed in terms of steady-state erosion rate and crater morphology. A possible correlation of the wear modes observed b oth in milling and erosive tests is proposed and discussed, based on a comparative experimental study, focusing on the insert material and m echanical characteristics.