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Digital manufacturing of personalized magnesium implants through binder jet additive manufacturing and automated post machining 被引量：2
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作者 Mojtaba Salehi Dennis Wee Keong Neo +5 位作者 Viktor Rudel Marc Stautner Philipp Ganser Su Xia Zhang Hang Li Seet Mui Ling Sharon Nai 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第8期3308-3324,共17页
While magnesium(Mg)is a promising material for personalized temporary implants,the lack of a digital manufacturing solution for Mg implants impedes its potential progress.This study introduces a hybrid manufacturing p... While magnesium(Mg)is a promising material for personalized temporary implants,the lack of a digital manufacturing solution for Mg implants impedes its potential progress.This study introduces a hybrid manufacturing process that integrates binder jet additive manufacturing with automated dry post-machining to enable end-to-end digital manufacturing of personalized Mg implants.Spherical cap-shaped Mg implants were additively manufactured through binder jetting.These implants were placed on graphite flakes during sintering as a potential non-reactive support material,allowing unrestricted shrinkage of 15.2%to a relative density of 87%.Microstructural and dimensional analysis revealed consistent interconnected porous microstructures with a shrinkage distortion within±0.2 mm of the original digital drawing.High-speed dry milling of the sintered samples,assessed via an orthogonal cutting test,identified the optimized cutting parameters.A three-step machining process for automated 5-axis machining,along with clamping strategies,referencing,and an adaptive plug-in,were successfully implemented.The automated dry machining on binder-jet printed Mg implants resulted in an average roughness of<1.3μm with no defects.In summary,this work introduces a robust digital manufacturing solution to advance the transformative landscape of Mg implants and scaffolds.©2024 Chongqing University.Publishing services provided by Elsevier B.V.on behalf of KeAi Communications Co.Ltd. 展开更多
关键词 SINTERING Binder jet additive manufacturing Computer-aided manufacturing Orthogonal cutting Magnesium implants
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