Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jallcom.2020.157133
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dc.titleA novel method to improve the removability of cone support structures in selective laser melting of 316L stainless steel
dc.contributor.authorCao, Qiqiang
dc.contributor.authorShi, Zhuoqi
dc.contributor.authorBai, Yuchao
dc.contributor.authorZhang, Jiong
dc.contributor.authorZhao, Cuiling
dc.contributor.authorFuh, Jerry Ying Hsi
dc.contributor.authorWang, Hao
dc.date.accessioned2021-06-08T02:29:15Z
dc.date.available2021-06-08T02:29:15Z
dc.date.issued2021-02-15
dc.identifier.citationCao, Qiqiang, Shi, Zhuoqi, Bai, Yuchao, Zhang, Jiong, Zhao, Cuiling, Fuh, Jerry Ying Hsi, Wang, Hao (2021-02-15). A novel method to improve the removability of cone support structures in selective laser melting of 316L stainless steel. JOURNAL OF ALLOYS AND COMPOUNDS 854. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jallcom.2020.157133
dc.identifier.issn09258388
dc.identifier.issn18734669
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/191846
dc.description.abstractIn selective laser melting (SLM), support structures play a critical role in successful printing. Despite its necessity, the removal of support structures after printing becomes a challenging task which is usually time-consuming and labour-intensive. Mechanical post-processing can be employed to facilitate the automatic removal of support structures with higher efficiency. However, the mechanical forces of a machining process such as milling can cause the cone supports to tilt, collapse and be pulled up. This paper presents a novel method to improve the machinability of cone support structures. In this method, the epoxy resin is filled into the gaps between the entire cone support structures to form a solid composite structure after the epoxy resin is fully cured. The relationship between the force components in various directions during support removal is theoretically analyzed. The method is studied in terms of cutting performance, cutting force and energy, tool wear, workpiece surface damage and corrosion behaviour. On top of rectifying the problems of resultant support tilting and collapsing, the cutting force, specific cutting energy, tool wear and damage to the workpiece surface are significantly reduced, and the corrosion behaviour of the samples is slightly improved due to better surface quality after support removal. A finite element model is constructed for analysis of the underlying mechanisms. This paper addresses the research gap on the corrosion behaviour of the workpiece after support removal, and the newly developed method can be further applied to the machining of other types of support structures in SLM.
dc.language.isoen
dc.publisherELSEVIER SCIENCE SA
dc.sourceElements
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectTechnology
dc.subjectChemistry, Physical
dc.subjectMaterials Science, Multidisciplinary
dc.subjectMetallurgy & Metallurgical Engineering
dc.subjectChemistry
dc.subjectMaterials Science
dc.subjectSupport removal
dc.subjectSupport structures
dc.subjectPost-processing
dc.subjectCorrosion
dc.subject316L stainless steel
dc.subjectSelective laser melting
dc.subjectCORROSION BEHAVIOR
dc.subjectCUTTING FORCES
dc.subjectMECHANICAL-PROPERTIES
dc.subjectTITANIUM-ALLOYS
dc.subjectMICROSTRUCTURE
dc.subjectSIMULATION
dc.subjectRESISTANCE
dc.subjectALUMINUM
dc.subjectENERGY
dc.typeArticle
dc.date.updated2021-06-07T02:15:05Z
dc.contributor.departmentDEPT OF MECHANICAL ENGINEERING
dc.description.doi10.1016/j.jallcom.2020.157133
dc.description.sourcetitleJOURNAL OF ALLOYS AND COMPOUNDS
dc.description.volume854
dc.published.statePublished
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