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Continuous annealing induces changes in the superficial chemical make-up of cold-rolled sheet metal during heating and cooling. Mainly used as a subsequent treatment, it has to get rid of oxides formed from the alloy elements and from impurities. With this in view, the effect on final surface quality of a newly developed electrolytic process in a neutral solution (TEF) was studied and compared with commonly used pickling treatments. The effectiveness of the treatment is directly related to the annealing temperature as well as to the steel grade, which determines whether the surfaces can be readily phosphatised.

Additional information

Authors: BORDIGNON L, Centre de Recherche Métallurgique, Liège (BE)
Bibliographic Reference: EUR 15149 FR (1994) 103 pp., FS, ECU 13.50
Availability: (2)
ISBN: ISBN 92-826-9344-9
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