Recycled sand for sustainable 3D-printed sand mold processes

Abstract

Traditional casting industries are losing their appeal due to poor working conditions. Combining casting with additive manufacturing is a popular solution, with binder jetting being the best option for sand mold printing. However, waste management and environmental concerns in binder jetting need to be addressed. This study shows that recycled sand can produce mechanical properties comparable to new sand, while reducing waste and environmental impact. Recycled sand used less binder and hardener, resulting in cost savings and environmental bene ts. This study highlights the importance of waste management and sustainability in 3D-printed sand mold processes and offers a promising solution for recycled sand powders in binder jetting.