Mastering rolls in high productive finishing mills
Despite continuous progress in roll development and improved rolling conditions, the control of work roll performance remains a major concern for mill operators. This is due to the complexity of the problem, and also to shortcomings in real-time information and knowledge at the right production levels. The objective of this project is to acquire a better understanding of work rolls' behaviour during hot rolling by combining different approaches: laboratory and pilot trials, modelling, development of information links, monitoring and analysis of rolling data, specific industrial trials, the implementation of new measurement techniques and the optimisation of rolling conditions. The combination of these different approaches has led to the development of several tools for an improved control of roll degradation. The most important tools are the continuous hot-rolling pilot line, the work roll oxide layer growth and wear model, advanced data links between rolling data and roll shop, an improved algorithm for Rollscope image analysis, a guideline for roll evaluation, new scheduling algorithms, an indicator for cooling water quality and an advanced monitoring of lubrication efficiency. The industrial implementation of several tools has led to an increase of more than 60 % in roll performances at Llanwern and to improved control and product quality at the Sidmar HSM. Although not all questions have been answered, significant progress has been made in the plants. However, this project also started a new approach to roll degradation related to corrosion and asymmetric rolling conditions.
Bibliographic Reference: EUR 22955 EN (2007), 158 pp. Euro: 25
Availability: Katalogue Number: KI-NA-22955-EN-S The paper version can be ordered online and the PDF version downloaded at: http://bookshop.europa.eu
ISBN: ISBN: 978-92-79-06619-1
Record Number: 200819653 / Last updated on: 2008-01-21
Original language: en
Available languages: en