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Final report on Contract no. 7210-PR/039, running from 1 July 1997 to 31 December 2000

Increasing demands on the quality of steel products and on the development of steel grades with low contents of oxygen, sulfur, nitrogen and phosphorus, requires control of the homogeneity and cleanness all along the elaboration chain. Improvements to sampling and analysis procedures will allow steels to be made to closer composition tolerances and with greater consistency from cast to cast. To fulfil this objective, four main activities were performed:

- Adaptation of new developments in the field of analytical methods (PDA-OES and PGA) to improve the control of the steel-making process. Most of the developments concern the PDA-OES technique improving the detection limits and the analytical precision and providing faster information on the cleanness of steel products.
- Rapid description of the heterogeneities (defects or segregations) of the metal at different stages of the process (mapping system).
- Improvement of liquid steel sampling to be sure that information can be used for predicting the final cleanness and purity of the metal. These improvements should result from fundamental design studies with quantification of their effectiveness by analytical techniques.
- Adaptation of the techniques and procedures to on-site analysis possibilities. Some of the developments have been tested in industrial plants to control their effectiveness.

Additional information

Authors: MEILLAND R, IRSID, Maizières-lès-Metz (FR);JOWITT R, CORUS UK Ltd, Middlesborough (GB);RIBERA M, Sidenor I+D SA, Basauri (ES);DIDRIKSSON R, Jernkontoret, Stockholm (SE);SCHULLER M, VASL, Linz (AT)
Bibliographic Reference: EUR 20219 EN (2002), pp.111. Euro: 17.50
Availability: EUR-OP reference: KI-NA-20219-EN-S Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-3255-1
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