Community Research and Development Information Service - CORDIS


Steels produced for use in the automotive industry need to have a clean surface and good mechanical properties. The oils used in steel rolling can present problems, however, leaving a residue on the end product. Experiments were conducted to find ways of ensuring that batch annealed steels could compete with continuous annealed steels, in terms of surface cleanliness and quality. Tests indicated that the use of a high-convection pure hydrogen protective atmosphere in steel production can improve surface cleanliness and reduce thermocracking and polymerisation. In addition, production heat cycles were modified in order to relieve stress on the steel, but researchers concluded that such an approach would inhibit productivity. Surface carbon measurements may be helpful in identifying which oils are likely to cause problems during annealing, and further development of this technique is required. The properties of oils currently in production use are being monitored, in order to predict the behaviour of new oils, and thereby reduce trial costs for manufacturers. Research continues into means of controlling the mechanisms which affect the final cleanliness of batch annealed steels, and the degradation of oils used in rolling.

Additional information

Authors: LAMBERIGTS M, CRM Leige (BE);BORDIGNON L, CRM Leige (BE);LEGWOOD P S, British Steel plc (GB)
Bibliographic Reference: EUR 18634 EN (1998) 79pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-5045-5
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