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In this research project, work was directed at developing and carrying out online trials with the CRM roughness sensor and performing rolling trials for evaluating roughness transfer on high-strength grades. Modelling the roughness transfer was also analysed. Concerning the online sensor, deep analysis of the images acquired on the CAPL line has shown a good correlation between the optical and mechanical measurement. A major conclusion of this research part of the project is that an efficient sensor for measuring online deterministic and non-deterministic roughness has been realised. A series of rolling tests were made at EKO Stahl, Salzgitter and SSAB with different kinds of steel grades and roll textures. The aim of these trials was to learn about the roughness transfer on such HS grade and to gather data for the modelling of this roughness transfer during temper rolling. An Excel sheet has been prepared containing all the results of the rolling trials made by different partners. This sheet allows the determination and presentation of different connections. The last part of the work consisted of the development of a model for the roughness transfer for the different textures and grades analysed. This model can be used for evaluating the influence of different elongation on the roughness transfer.

Additional information

Authors: HARDY Y, CRM - Centre de recherches métallurgiques, Angleur (BE);KURZINSKY J, Betriebsforschungsinstitut (BFI), Düsseldorf (DE);JACOBS L, CORUS, London (UK);HÖRNSTRÖM S E, SSAB, Borlänge (SE);RICHTER U, EKO Stahl, Eisenhüttenstadt (DE)
Bibliographic Reference: EUR 21416 EN (2005), 113pp. Euro: 25
Availability: Katalogue Number: KI-NA-21416-EN-S The paper version can be ordered online and the PDF version downloaded at:
ISBN: ISBN: 92-79-00061-6
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