Computer Generation of Metal Components by Simultaneous Deposition of Mould, Cores and Part

dc.creatorMohebi, Masoud M.
dc.creatorYang, Shoufeng
dc.creatorEvans, Julian R. G.
dc.date.accessioned2020-03-02T15:36:48Z
dc.date.available2020-03-02T15:36:48Z
dc.date.issued2006
dc.description.abstractA new solid freeforming method based on co-delivery of mould powder materials and part powder materials using vibration-controlled, dry powder valves is presented in this paper. Thin layers of stainless steel powder are delivered to the forming area according to the cross-section of the CAD file to produce the component. Mould powder which has low sinterability is delivered to the non-forming areas of the same layer. All powders are delivered by computer-controlled, acoustic powder valves. The flow rate and switching of the valves provides the composition and shape control during fabrication. The stacked layers of loose powder are then sintered in a conventional furnace. The mould materials are removed after sintering. This method avoids the high thermal stress problem in selective laser sintering, avoids high capitalisation, makes use of conventional furnaces and allows for the incorporation of three dimensional function gradients. Test pieces including step wedge and Spierpinski’s cube were fabricated. Advantages, limitations and problems are discussed.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/80135
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/7156
dc.language.isoengen_US
dc.relation.ispartof2006 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectSolid freeformingen_US
dc.titleComputer Generation of Metal Components by Simultaneous Deposition of Mould, Cores and Parten_US
dc.typeConference paperen_US
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