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Effect of the Martensitic Transformation on the Stamping Force and Cycle Time of Hot Stamping Parts

dc.contributor.authorMuro, Maider
dc.contributor.authorArtola, Garikoitz ORCID
dc.contributor.authorGorriño Vicandi, Antonio
dc.contributor.authorAngulo Duque, Carlos ORCID
dc.date.accessioned2019-03-07T12:01:06Z
dc.date.available2019-03-07T12:01:06Z
dc.date.issued2018-06
dc.identifier.citationMetals 8(6) : (2018) // Article ID 385es_ES
dc.identifier.issn2075-4701
dc.identifier.urihttp://hdl.handle.net/10810/31911
dc.description.abstractStamping dies perform two functions in the hot stamping process of body-in-white components. Firstly, they form the steel sheet into the desired shape and, secondly, they quench the steel at a cooling rate that leads to hardening by means of the austenite-gamma to martensite transformation. This microstructural change implies a volume expansion that should lead to a force peak in the press, which has yet to be detected in industrial practice. In this study, a set of hot stamping laboratory tests were performed on instrumented Al-Si-coated 22MnB5 steel flat formats to analyze the effect of the stamping pressure on the detection of the expected peak. Plotting the sheet temperature and pressure curves against time allowed us to identify and understand the conditions in which the force peak can be detected. These conditions occurred most favorably when the stamping pressure is below 5 MPa. It is thus possible to determine the exact moment at which the complete hardening transformation occurs by monitoring the local pressing force of the tool in areas where the pressure exerted on the metal format is below 5 MPa. This information can be applied to optimize the time needed to open the dies in terms of the complete martensitic transformation.es_ES
dc.description.sponsorshipThe authors gratefully acknowledge the funding provided by the Department of Research and Universities of the Basque Government under Grant No. IT947-16 and the University of the Basque Country UPV/EHU under Program No. UFI 11/29.es_ES
dc.language.isoenges_ES
dc.publisherMDPIes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subjecthot stampinges_ES
dc.subjectpress hardeninges_ES
dc.subjectmartensitic expansiones_ES
dc.subjectforce peakes_ES
dc.subjectcycle timees_ES
dc.subjectheat-transfer coefficientes_ES
dc.subjectmechanical-propertieses_ES
dc.subjectsteelses_ES
dc.subjecttemperatureses_ES
dc.subjecttoolses_ES
dc.titleEffect of the Martensitic Transformation on the Stamping Force and Cycle Time of Hot Stamping Partses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holderThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).es_ES
dc.rights.holderAtribución 3.0 España*
dc.relation.publisherversionhttps://www.mdpi.com/2075-4701/8/6/385es_ES
dc.identifier.doi10.3390/met8060385
dc.departamentoesIngeniería mecánicaes_ES
dc.departamentoeuIngeniaritza mekanikoaes_ES


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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Except where otherwise noted, this item's license is described as This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).