|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Deriving Value from Challenging Waste Materials: Recycling and Sustainability Joint Session
||Investigating the Use of Recycled Machining Waste as an Alternative Feedstock for Metal Additive Manufacturing
||Parnian Kiani, Haoyang He, Jessica Bui, Kaka Ma, Julie M. Schoenung
|On-Site Speaker (Planned)
Machining is an essential step in traditional manufacturing that increases the cost of production and material waste. A potential way to improve material utilization is to use machining chips as an alternative feedstock in metal based additive manufacturing processes such as Laser Engineered Net Shaping (LENS). The primary feedstock for LENS is gas atomized powder, which typically has a spherical morphology and controllable particle size. Machining chips, however, exhibit variable particle shapes and a wide particle size distribution. The gas atomization method represents significant energy consumption and cost, whereas using machining chips can decrease the cost, energy requirements and environment impact of this process. Mechanical milling can be applied to produce metal powder from machining chips. The feasibility of using pre-processed machining chips for LENS deposition has been investigated in this study. Environmental impact and economic evaluation have also been investigated by using life cycle assessment and cost modeling techniques.