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Experimental assessment of hybrid mould performance

2010-02-23Journal article Restricted access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânica
datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.fosCiências Naturais::Ciências da Computação e da Informação
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorPontes, Antonio J.
dc.contributor.authorQueirós, Miguel P.
dc.contributor.authorMartinho, Pedro G.
dc.contributor.authorBártolo, Paulo J.
dc.contributor.authorPouzada, António S.
dc.date.accessioned2025-12-05T19:09:10Z
dc.date.available2025-12-05T19:09:10Z
dc.date.issued2010-02-23
dc.description.abstractHybrid moulds are a novel approach for rapid tooling of injection moulds that combines conventional machining for the mould structure and rapid prototyping techniques for the moulding blocks (core and cavity). In this study, two routes were used for producing the moulding blocks: selective laser sintering of stainless steel-based powder (hard tool) and epoxy resin vacuum casting (soft tool). The experimental work was based on a complex tridimensional commercial part. The mouldings were made in polypropylene, and the processing performance was monitored online in terms of pressure and temperature at the impression. The performance of the moulding blocks was analysed in terms of thermal and cycle performance and structural integrity. The epoxy tooling route is more adequate for fine detailing than selective laser sintering but is not adequate for parts with extensive ribs or deep bosses. The structural integrity of the less costly epoxy composite can be compromised during ejection, this suggesting the need to evaluate the stress field by simulation at the design stage of the mould.eng
dc.description.sponsorshipThe authors acknowledge the financial support to the project Hibridmolde by the FCT-Portuguese Foundation for Science and Technology-through the European Union POCTI and FEDER programs.
dc.identifier.citationPontes, A.J., Queirós, M.P., Martinho, P.G. et al. Experimental assessment of hybrid mould performance. Int J Adv Manuf Technol 50, 441–448 (2010). https://doi.org/10.1007/s00170-010-2546-1.
dc.identifier.doi10.1007/s00170-010-2546-1
dc.identifier.eissn1433-3015
dc.identifier.issn0268-3768
dc.identifier.urihttp://hdl.handle.net/10400.8/14938
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Nature
dc.relation.hasversionhttps://link.springer.com/article/10.1007/s00170-010-2546-1
dc.relation.ispartofThe International Journal of Advanced Manufacturing Technology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectHybrid mould
dc.subjectMoulding blocks
dc.subjectInjection Moulding
dc.subjectRapid tooling
dc.subjectSLS
dc.subjectEpoxy casting
dc.titleExperimental assessment of hybrid mould performanceeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage448
oaire.citation.startPage441
oaire.citation.titleInternational Journal of Advanced Manufacturing Technology
oaire.citation.volume50
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameBartolo
person.givenNamePaulo
person.identifier203086
person.identifier.ciencia-id4B16-C0F8-02D3
person.identifier.ciencia-id5810-9BF9-4522
person.identifier.orcid0000-0002-0629-0497
person.identifier.orcid0000-0003-3683-726X
person.identifier.ridF-2421-2013
person.identifier.scopus-author-id6603353041
relation.isAuthorOfPublication0a4cc917-6078-456e-b482-fd0913231e84
relation.isAuthorOfPublicationab44d1ae-46d0-45c2-b19f-200024b5a990
relation.isAuthorOfPublication.latestForDiscovery0a4cc917-6078-456e-b482-fd0913231e84

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Hybrid moulds are a novel approach for rapid tooling of injection moulds that combines conventional machining for the mould structure and rapid prototyping techniques for the moulding blocks (core and cavity). In this study, two routes were used for producing the moulding blocks: selective laser sintering of stainless steel-based powder (hard tool) and epoxy resin vacuum casting (soft tool). The experimental work was based on a complex tridimensional commercial part. The mouldings were made in polypropylene, and the processing performance was monitored online in terms of pressure and temperature at the impression. The performance of the moulding blocks was analysed in terms of thermal and cycle performance and structural integrity. The epoxy tooling route is more adequate for fine detailing than selective laser sintering but is not adequate for parts with extensive ribs or deep bosses. The structural integrity of the less costly epoxy composite can be compromised during ejection, this suggesting the need to evaluate the stress field by simulation at the design stage of the mould.
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