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Denis Cormier

Rochester Institute of Technology

Progress In Metal Additive Manufacturing Via Magnetohydrodynamic Metal Droplet Jetting

Magnetohydrodynamic (MHD) printing is an emerging alternative to traditional powder bed fusion metal additive manufacturing processes. It uses wire, rather than powder, as the feedstock material, and it produces dense metallic parts via on-demand jetting of molten metal droplets. Process parameters such as drop size, jetting temperature, drop spacing, and jetting frequency all have a significant influence on dimensional accuracy and microstructure. However, the perimeter and infill printing strategies also play a key role in output of the process. In this presentation, an open architecture MHD jetting machine from Xerox (formerly Vader Systems) is used to demonstrate the influence of both process parameters and toolpath generation strategies on geometric accuracy, density, and microstructure of aluminum alloys.


Denis Cormier is the Earl W. Brinkman Professor of Industrial and Systems Engineering at Rochester Institute of Technology where he also directs the New York State Additive Manufacturing and Multifunctional Printing Center. He has worked in the area of additive manufacturing and 3D printing for nearly 25 years. Much of his research has focused on metal additive manufacturing of aerospace alloys and engineering lattice structures. He was a founding member of ASTM’s F-42 additive manufacturing standards group, and he is a long-time organizing committee member for SME’s RAPID conference and exhibition. He serves on the editorial advisory boards for several journals including Additive Manufacturing, the Rapid Prototyping Journal.


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