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Abstract

An increased cooling rate on the runout table of hot strip mills would bring the possibility to produce high strength steels with cheaper chemical compositions. The experience gained in the plate mills with the Mulpic process has shown that it was possible to reach very high specific cooling powers. The implementation of ultra-fast cooling to thin strips makes necessary the study of the following aspects:

- Technology: trouble-free threading and passing of the product through the equipment, while obtaining an homogeneous cooling in longitudinal and transverse directions; the flatness must not deteriorate;
- Metallurgy: characteristics of the products.

In order to study the technological aspects a pilot equipment has been installed in the hot strip mill of Usines G BOËL. The different trials have shown that it was possible to apply an ultra-fast cooling to thin strips at the exit of the finishing stands: the cooling homogeneity is good and the flatness is not affected. From the technological point of view, the head end of the thinner coils is not cooled, in order to suppress the risk of cobbles. To reduce the corresponding yield losses, an additional pinch-roll has to be installed at the exit of the cooling zone. one.

Additional information

Authors: WILMOTTE S, Centre de recherches métallurgiques, ASBL, Liège (BE);SIMON P, Centre de recherches métallurgiques, ASBL, Liège (BE)
Bibliographic Reference: EUR 16835 FR (1997) 48pp., FS, ECU 8.50
Availability: Available from the (2)
ISBN: ISBN 92-828-0757-6
Record Number: 199711434 / Last updated on: 1997-11-10
Category: PUBLICATION
Original language: fr
Available languages: fr
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