Influence of the Diamond Size and Diamond Distribution on the Wear Behaviour of Sintered Diamond-Metal Composites during the Machining of Reinforced Concrete - Investigations by Computer Tomography and Statistical Evaluations

摘要

Due to their outstanding wear resistance and hardness, diamond tools are mainly used for themachining of stone and concrete. These diamond cutting tools consist of small diamond grindingsegments, which are fabricated powder-metallurgically. This production route combines a very ductilemetallic binder component into which diamonds are embedded. Additionally, the sintering process ofthese composite materials offers a high degree of flexibility. The amount of diamonds, the grain size,and the metal matrix powder used can be fully adapted to the materials’ characteristics of themachined concrete or stone. Although sintering and hot pressing are state of the art for the diamondtool production, the wear mechanisms on heterogeneous materials is difficult to evaluate with physicalmethods. Therefore, this paper focuses on a statistical method to investigate the influences of thediamond size, amount, and the computer tomographically calculated diamond distribution onmachining parameters such as wear and forces.