A review of binder jet technology used to create helical sprue designs to reduce flow defects and improve quality in aluminum bronze castings
Nattinee Valun-araya, Ongkarn Chantarasukkasem, and John Pearce of Speed 3D Mold investigate sand binder jet 3D printing on the ExOne S-Max® for incorporating unique, organic sprue designs into metalcasting moulds.
In this white paper, you'll review:
- Initial experiences in the development of helical sprue use for the commercial production of Al alloy and Bronze propeller and impeller castings
- Production trials on castings prone to surface defects when poured using conventional sprues
- Examples of conical helical sprues and a single turn helix with a spherical feeder