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The main objective of this project is to set up the most relevant tribological approach for characterisation of cold rolling lubricants, using experimental and theoretical knowledge in rolling and lubrication allowing the choice at laboratory scale of a new lubricant with respect to the cold rolling demands. An important experimental programme was performed with the available tribological tests and the available pilot mills of the project. The same reference lubricants were used to compare the different testing methods. Moreover, this task also had the objective to show which tribological test, with which procedure is sensitive to which lubricating mechanism. Due to specific mechanisms when lubricated with emulsion, the �feeding properties� of the cold rolling roll bite cannot be characterised with the usual tribological tests used in this project. The current tribological tests efficiency domain is the domain called �chemical lubrication�. This domain corresponds to friction in boundary regime, increasing dissipated energy or increasing temperature up to scuffing limits. For the selection of up-to-date tandem cold rolling oils, we recommend to give greatest importance to the friction temperature resistance property. If the friction temperature resistance property does not discriminate enough, we recommend using the scuffing test as a secondary criterion for final selection. At the moment, for a complete evaluation of lubrication in cold rolling, the use of chemical analyses, relevant tribological testing methods as recommended above, pilot mill trials and mixed lubrication knowledge are needed.

Additional information

Authors: LAUGIER M, Arcelor Research, Maizières-lès-Metz (FR);JOHNSSON A, MEFOS, Luleå (SE);RAULF M, Thyssen Krupp Stahl AG, Duisburg (DE);KAEFER D, Thyssen Krupp Stahl AG, Duisburg (DE);RASP W, Max-Planck-Institut, Düsseldorf (DE);WICHERN C, Max-Planck-Institut, Düsseldorf (DE);HERMANN H, TU Bergakademie, Institut für Eisen- und Stahltechnologie, Freiberg (DE)
Bibliographic Reference: EUR 22058 EN (2006), 110 pp. Euro: 25
Availability: Katalogue Number: KI-NA-22058-EN-S The paper version can be ordered online and the PDF version downloaded at:
ISBN: ISBN: 92-79-01746-2
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