Peculiar properties of BK-8 hard alloy wear after volumetric laser pulsed hardening under production conditions

Resumo

Today, it is considered that the latest principally new breakthrough in the sphere of tooling materials was the invention of metal-ceramic solid alloys in the 1930s. Moreover, model materials for cutting tools have slowed down the further development of metal-working equipment, which, e.g., may propose higher cutting modes. That is why the main current trends in improving the performance of tooling materials is improving manufacturing technologies and changing their chemical composition and hardening applications. The subject of our study is the wear pattern of a cutting tool made of BK-8 solid alloy subjected to VPLH under production conditions. Furthermore, the aim is not only to determine the most optimum hardening modes (energy and duration of the laser impulse, diameter of the laser beam, distance from the radiation point to the cutting edge), but also to analyze the stability of the BK-8 solid oil from the point of view of the obtained wear pattern.