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Knowledge of the interaction in the area near the surface and in the area interface/steel, of thin sheet and extra lattens, is of particular interest. Surface analytical processes such as glow discharge optical emission spectrometry (CGOES) and sputtered neutral mass spectrometry (SNMS) were used in the clarification of this problem area. These analytical systems enable the quantitative characterization of layers near the surface to the nm area, as well as the quantitative description of interface layers. Through the use of a protective atmosphere annealing furnace with safety measures for protective atmospheres to 100% H(2) defined element enrichments of the accompanying elements Mn, Cr and Al were set up. The element concentrations and the course of their concentrations in the surface of the fine sheet was quantified. The influence of these element enrichments on pickling and phosphatizing feasutres was examined. The influence of sheeting and paint compositions on appearance and adhesion was examined. The exhaust steam characteristics of rolling oils and their cracking products was examined closely and trasferred to practical operations. Gas measurements on an operative annealing hood, for the optimization of the annealing parameters were carried out and discussed.

Additional information

Authors: SOMMER D, Krupp Hoesch Stahl AG, Dortmund (DE)
Bibliographic Reference: EUR 15479 DE (1996) 55pp., FS, ECU 8.50
Availability: Available from the (2)
ISBN: ISBN 92-827-6190-8
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