Mechanical Functionalisation of Cutting Inserts by Machine Hammer Peening

Abstract

Modern developments of functional components result in increasing demands on new materials and their characteristics. Therefore, the complexity of machining applications is also rising, and the challenges concerning wear resistance and longer lifetime of cutting tools continue to grow. The focus of this work is on the mechanical functionalisation of cutting inserts made of cemented tungsten carbide with a Ti-Al-N coating. The functionalisation of the cutting tools is caused by machine hammer peening of the cutting insert's rake face in order to influence surface-near layers, which results in material compaction of the treated areas and an inducement of residual compressive stresses.