Upcycling strategy of grinding swarf by supersolidus liquid phase sintering

摘要

Machining is an important process in the metalworking industry. All machining operations, like milling, turning or grinding, generate large amounts of waste products. Due to the limited resources, it is necessary to find a working recycling strategy and to close the loop in the circular economy. However, there is no recycling strategy for grinding waste. This could be explained by the composition of the grinding waste, called grinding sludge. Therefore, this research deals with the upcycling of the grinding swarf in a PM process. The grinding swarf are characterized by SEM and XRD and processed by a ball mill treatment and a Supersolidus liquid phase sintering process.