Support-free sintering of 3D printed binder jet copper and stainless steel parts

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dc.creatorJangam, John Samuel Dilip
dc.creatorAnthony, Thomas
dc.creatorMcKinnell, Jim
dc.creatorPon, Ben
dc.creatorPiderman, Jake
dc.creatorZhao, Lihua
dc.date.accessioned2023-01-31T13:56:33Z
dc.date.available2023-01-31T13:56:33Z
dc.date.issued2022
dc.description.abstractBinder jet additive manufacturing involves selectively applying a binder, layer-by-layer, to produce green parts, followed by a high temperature sintering treatment. During sintering, green parts are inherently prone to undesired part distortion/sag in the unsupported regions. Traditional methods use 3D printed supports or machined ceramic setters to avoid the part distortion/sag during sintering. We introduce a shape-retaining-stimulus coating that will mitigate/eliminate the need of additional supports during sintering. Simply supported coper and stainless steel green parts of various thickness were evaluated for part distortion. Our experimental results demonstrate that a selective application of the shape-retaining-stimulus coating on 3D printed copper parts with a spanning up to 50 mm, and stainless steel parts spanning up to 33 mm can be sintered without auxiliary supports. Our shape-retaining-stimulus coating produces exceptional results, and the ease of removal makes it an attractive candidate.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/117367
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/44248
dc.language.isoengen_US
dc.relation.ispartof2022 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectBinder jettingen_US
dc.subjectsinteringen_US
dc.subjectsupport structuresen_US
dc.subjectdistortionen_US
dc.titleSupport-free sintering of 3D printed binder jet copper and stainless steel partsen_US
dc.typeConference paperen_US

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2022 International Solid Freeform Fabrication Symposium