NORMAL PRESSURE AND FRICTION STRESS MEASUREMENT IN ROLLING PROCESSES

Poul Henningsen, Mogens Arentoft, Jonas Lagergren, Nils-Göran Jonsson, W. Presz

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

    Abstract

    A load transducer has been developed to measure the contact forces in the deformation zone during rolling. The transducer consists of a strain gauge equipped insert, embedded in the surface of the roll. The length of the insert exceeds the contact length between material and roll. By analyzing the output from the transducer, the friction stress and normal pressure in the contact zone can be determined. The new concept differs from existing pin designs by a lower disturbance of lubricant film and material flow and limited penetration of material between transducer and roll. Aluminum, cupper and steel strips with a width of 40 mm was rolled with reduction varying from 2.7% to 29%, in a pilot mill. For evaluating the transducer, the measured contact forces are compared with external measurements of roll separating forces and torque. The determined friction coefficients are compared with values found by forward slip measurements.
    Original languageEnglish
    Title of host publicationICTP2005
    Publication date2005
    Publication statusPublished - 2005
    Event8th International Conference on Technology of Plasticity - Verona, Italy
    Duration: 9 Oct 200513 Oct 2005

    Conference

    Conference8th International Conference on Technology of Plasticity
    Country/TerritoryItaly
    CityVerona
    Period09/10/200513/10/2005

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