Improving product performance: the installation of heavy workroll bending and hydraulic capsules in Hot Strip Mill 2 at Corus IJmuiden

摘要

Hot Strip Mill 2 at Corus IJmuiden continuously improves its thickness, crown and shape performance in order to meet the higher standards required by its customers. Besides that, improving thickness, crown and shape control is a requirement for increasing the production volume and expanding the product mix towards wider and harder materials. To realise a stepwise improvement, in the period from December 2008 to June 2009 heavy work-roll bending and hydraulic capsules were installed in the finishing mill. This presentation focuses on the improvements made to the modelling and control of shape and crown in order to realise a successful implementation. It also highlights the results of the installation: a stepwise improvement in shape and thickness-any-place performance as well as operational advantages such as using a single ground work-roll crown for all products, increased speed of work and a decrease in the number of work-roll changes.