Casting Manufacturing of Cylindrical Preforms Made of Low Alloy Steels

verfasst von: Eugen Demler, Stanislav Götze, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier, Jonathan Ursinus, Christoph Büdenbender, Bernd Arno Behrens
Abstract: The manufacturing of complex drivetrain components made of steel requires multi-stage manufacturing processes, resulting in long processing times and high costs. Forged parts get their final geometry after multi-stage forming operations. One approach to shorten such process chains is close contour casting of steel preforms and a single subsequent forming step to achieve high strength properties similar to those of multi-stage forged parts. Since the application of precision forging using cast steel preforms has been studied insufficiently up to now, the manufacturing of cylindrical preforms made of the low-alloy heat-treatable steel G42CrMo4 by sand casting was investigated. Using casting simulations, suitable casting parameters for the finished casting systems were identified and nearly pore-free preforms were achieved. Depending on the casting system, metallographic investigations revealed different fractions of bainite in the microstructure of the casted preforms. Subsequently, the cylinders were deformed in upsetting experiments by which the remaining porosity could be eliminated. The numerical casting simulation was combined with a forming simulation to model the reduction in porosity and to allow the prediction of the densification behavior in further research employing more complex geometries.
Organisationseinheit(en): Institut für Werkstoffkunde
Institut für Umformtechnik und Umformmaschinen
Typ: Konferenzaufsatz in Fachzeitschrift
Journal: Procedia Manufacturing
Band: 47
Seiten: 445-449
Anzahl der Seiten: 5
ISSN: 2351-9789
Publikationsdatum: 2020
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Wirtschaftsingenieurwesen und Fertigungstechnik, Artificial intelligence
Elektronische Version(en): https://doi.org/10.1016/j.promfg.2020.04.333 (Zugang: Offen)
: Details im Forschungsportal „Research@Leibniz University“

BibTeX

@article{a56cb9a0a0694e39ac8cb975c5984d5f,
title = "Casting Manufacturing of Cylindrical Preforms Made of Low Alloy Steels",
abstract = "The manufacturing of complex drivetrain components made of steel requires multi-stage manufacturing processes, resulting in long processing times and high costs. Forged parts get their final geometry after multi-stage forming operations. One approach to shorten such process chains is close contour casting of steel preforms and a single subsequent forming step to achieve high strength properties similar to those of multi-stage forged parts. Since the application of precision forging using cast steel preforms has been studied insufficiently up to now, the manufacturing of cylindrical preforms made of the low-alloy heat-treatable steel G42CrMo4 by sand casting was investigated. Using casting simulations, suitable casting parameters for the finished casting systems were identified and nearly pore-free preforms were achieved. Depending on the casting system, metallographic investigations revealed different fractions of bainite in the microstructure of the casted preforms. Subsequently, the cylinders were deformed in upsetting experiments by which the remaining porosity could be eliminated. The numerical casting simulation was combined with a forming simulation to model the reduction in porosity and to allow the prediction of the densification behavior in further research employing more complex geometries.",
keywords = "Casting and forging simulation, G42CrMo4, Reduction in porosity, Sand casting",
author = "Eugen Demler and Stanislav G{\"o}tze and Sebastian Herbst and Florian N{\"u}rnberger and Maier, {Hans J{\"u}rgen} and Jonathan Ursinus and Christoph B{\"u}denbender and Behrens, {Bernd Arno}",
note = "Funding information: This research is supported by a research grant from Science Foundation Ireland (I)SF under Grant Number 16/RC/3872 and is co-funded under the European eR gional Development Fund. N.E. Gorji a cknolw edge s the New Foundation Award (No. P60687) received from Irish esearR ch Council (2019) and the ECIU esearR ch Mobility aaw rd 2018 (No. P60617) . Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - 351032371.; 23rd International Conference on Material Forming, ESAFORM 2020 ; Conference date: 04-05-2020",
year = "2020",
doi = "10.1016/j.promfg.2020.04.333",
language = "English",
volume = "47",
pages = "445--449",
journal = "Procedia Manufacturing",
issn = "2351-9789",
publisher = "Elsevier BV",
}