An insight in friction and wear mechanisms during hot stamping

Jenny Venema*, Javad Hazrati Marangalou, David Matthews, Ton Van Den Boogaard

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    3 Citations (Scopus)

    Abstract

    Hot stamping is often used in the automotive industry to combine formability and strength. However, during forming process at high temperatures, friction and tool wear are determining factors that can affect the efficiency of the whole process. The goal of this paper is to investigate the effects of temperature on the local coefficient of friction and tool wear and to provide an insight in the phenomena which take place at the tool-sheet metal interface during hot stamping processes. For this purpose, hot friction draw tests between uncoated tool steel and Al-Si coated press hardening steel were carried out at several temperatures between 500-700°C. Consecutive tests were performed to mimic industrial hot stamping process and to investigate the effect of tool wear on the friction phenomenon. Finally, tool-sheet metal tribological behavior and the interaction between the friction and tool wear mechanisms were analyzed using different imaging and chemical characterization techniques. The results show that several stages can be distinguished at the interface between tool and sheet metal coating during hot stamping: flattening due to initial normal contact, ploughing of tool asperities through coating, secondary ploughing in the coating by adhered material on the tooling, and abrasive wear in the tool by embedded particles in the sheet metal coating. Furthermore, tool wear shows some major differences in the temperature range of 500-700°C. At high temperature a larger abrasive area and more severe compaction galling occurs that can be explained by material properties of Al-Si coating at elevated temperatures. The results of this study can be used for more efficient process design and a more realistic modelling of the hot stamping process.

    Original languageEnglish
    Title of host publicationTribology in Manufacturing Processes and Joining by Plastic Deformation II
    EditorsNiels Bay, Chris V. Nielsen
    PublisherTrans Tech Publications Ltd
    Pages131-138
    Number of pages8
    Volume767 KEM
    ISBN (Print)9783035712995
    DOIs
    Publication statusPublished - 2018
    Event8th International Conference on Tribology in Manufacturing Processes & Joining by Plastic Deformation, ICTMP 2018 - Helsingør, Denmark
    Duration: 24 Jun 201826 Jun 2018
    Conference number: 8
    http://www.conferencemanager.dk/ICTMP2018

    Publication series

    NameKey Engineering Materials
    Volume767 KEM
    ISSN (Print)10139826

    Conference

    Conference8th International Conference on Tribology in Manufacturing Processes & Joining by Plastic Deformation, ICTMP 2018
    Abbreviated titleICTMP
    CountryDenmark
    CityHelsingør
    Period24/06/1826/06/18
    Internet address

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    Keywords

    • Al-Si
    • Friction
    • Hot stamping
    • Press hardening steel
    • Wear

    Cite this

    Venema, J., Hazrati Marangalou, J., Matthews, D., & Van Den Boogaard, T. (2018). An insight in friction and wear mechanisms during hot stamping. In N. Bay, & C. V. Nielsen (Eds.), Tribology in Manufacturing Processes and Joining by Plastic Deformation II (Vol. 767 KEM, pp. 131-138). (Key Engineering Materials; Vol. 767 KEM). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.767.131