Multi-Metal 3D Printing of Heat Exchangers Mark Norfolk, PE President [email protected] 614.688.5223 3D Printing ...process of joining materials to make objects from 3D model data Metal 3D Printing Directed Energy Deposition Powder Bed Fusion Sheet Lamination 3D Printing Enables • Complex internal geometry • Low/no cost part to part variation • Organic optimization Deposition Rate vs. Resolution Courtesy Boeing e t a R n o it is o p e D d e s a e r c n I Decreased Resolution What Shape Can You Dream? o Internal complexity is part of the process o Flow paths not limited to planer arrays o Slope, turn, slant in any direction o Microchannel panels can be built without welding/brazing Channels of every scale SIZE PHOTO Micro scale 10- 100mm Meso-scale 0.1mm- 1mm Mm-scale 1mm- 5mm Cm-scale 5mm- 2cm Macro-scale 2cm + Multi Material Solutions make metallic structures with multiple materials Flexible path cross section