Study on the distortion of steel worm shafts

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dc.contributor.authorSilveira, E.
dc.contributor.authorIrisarri, A. M.
dc.contributor.institutionCaracterizaciĆ³n y ValidaciĆ³n. Materiales
dc.contributor.institutionTecnalia Research & Innovation
dc.date.accessioned2024-07-24T11:59:53Z
dc.date.available2024-07-24T11:59:53Z
dc.date.issued2009-06
dc.description.abstractThis paper analyses the root causes for the distortion observed in some C45E grade steel worm shafts during the last steps of machining. Research carried out on two round bars of the steel where distortion was observed and two other ones of a batch machined without distortion were studied. Moreover, two worm shafts in the last steps of the machining process were also analysed. Residual stresses measurements revealed lower and more homogeneous distribution in the bars which do not exhibit the problem. Yield stress and ultimate tensile stress values recorded in the steel of these bars were also lower than those measured in the bars which presented the problem. Metallographic study of the first ones revealed a broken morphology of cementite in the pearlite pointing towards a material stress relieved after the rolling process, eliminating, at least partially, those stresses generated during the deformation of the bar. On the other hand, the pearlite in the steel which suffers distortion looked to be formed during the cooling process after rolling and no given posterior stress relief heat treatment. A stress relief heat treatment of the bars and/or a kinder machining are recommended.en
dc.description.statusPeer reviewed
dc.format.extent7
dc.identifier.citationSilveira , E & Irisarri , A M 2009 , ' Study on the distortion of steel worm shafts ' , Engineering Failure Analysis , vol. 16 , no. 4 , pp. 1090-1096 . https://doi.org/10.1016/j.engfailanal.2008.06.011
dc.identifier.doi10.1016/j.engfailanal.2008.06.011
dc.identifier.issn1350-6307
dc.identifier.urihttps://hdl.handle.net/11556/2989
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=62649157322&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofEngineering Failure Analysis
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordsDistortion
dc.subject.keywordsMachining
dc.subject.keywordsResidual stresses
dc.subject.keywordsSteel
dc.subject.keywordsGeneral Materials Science
dc.subject.keywordsGeneral Engineering
dc.titleStudy on the distortion of steel worm shaftsen
dc.typejournal article
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