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Basics for inline measurement of tribological conditions in series production of car body parts

  • The quality of car body parts in series production is strongly dependent on the tribological behavior. Fluctuating material properties such as the sheet roughness and the amount of lubricant have an influence on the forming process. On the basis of large amounts of data it is possible to investigate the friction behavior in series production and to make process adjustments if required. Therefore, inline measurement systems have a great potential to detect the sheet roughness during the cutting process of blanks in the coil line. Furthermore, contactless systems are advantageous as they do not damage the surface. Nevertheless, the optical measuring is influenced by the lubricant layer on top of the surface. Therefore, the previously unknown impact of the lubricant on the measuring result is investigated. Within this study, stationary optical roughness measurements have been conducted using different amounts of lubricant on hot-dip galvanized EDT steel. The results demonstrate the influence of different amounts of lubricant on the sheet roughness measurement. Hence, it is possible to correct the inline measuring results and gain knowledge of fluctuating surface roughness. In addition, strip drawing test has been carried out to investigate the effect of fluctuating tribological conditions.

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Metadaten
Author:B. Hansen, Michael Hoebler, S. Purr, J. Meinhardt, M. Merklein
DOI:https://doi.org/10.1088/1757-899x/651/1/012050
Parent Title (English):IOP Conference Series: Materials Science and Engineering
Publisher:IOP Publishing
Document Type:Article
Language:English
Year of first Publication:2019
Release Date:2022/02/02
Volume:651
Article Number:012050
Konferenzangabe:38th International Deep Drawing Research Group Annual Conference (IDDRG 2019) 3–7 June 2019, Enschede, Netherlands
Institutes:Fakultät Maschinenbau
Begutachtungsstatus:peer-reviewed
OpenAccess Publikationsweg:Gold Open Access- Erstveröffentlichung in einem/als Open-Access-Medium
research focus:Energie und Mobilität
Licence (German):Creative Commons - CC BY - Namensnennung 4.0 International