Measurement of Normal and Friction Forces in a Rolling Process

Poul Henningsen, Mogens Arentoft, Tarras Wanheim

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    For the rolling process, knowledge about interface conditions is important since it directly influences the maximum reduction ratio and thereby the num-ber of steps required for a given reduction. The mechanical properties of the produced sheet and the surface quality of it are also influenced by the fric-tion conditions. To achieve this important informa-tion, measurements of the normal pressure and friction stresses in the deformation zone are re-quested. The direction of the friction stresses is changing during the rolling gap. At the entrance of the de-formation zone, the peripherical velocity of the roll is higher than for the incoming material, which causes frictional stresses at the material acting in the rolling direction. At the outlet of the rolling gap, the velocity of the deformed material exceeds the velocity of the roll, generating frictional stresses contrary to the direction of rolling. In a narrow area in the deformation zone, the velocity of the de-formed material is equal to the velocity of the rolls. This area or line is named “neutral line”. The posi-tion of the neutral line depends on friction, reduc-tion ratio, diameter of the rolls, and width of the sheet.
    Original languageEnglish
    Title of host publicationSTÅL 2004
    EditorsJernkontoret, Sweden
    Place of PublicationStockholm
    PublisherJernkontoret
    Publication date2004
    Publication statusPublished - 2004
    EventSTÅL 2004 - Borlänge, Sweden
    Duration: 5 Nov 2004 → …

    Conference

    ConferenceSTÅL 2004
    CountrySweden
    CityBorlänge
    Period05/11/2004 → …

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