Comprehensive optimisation technology of roller profile in continuous annealing furnace

ABSTRACT

Several problems, such as strip deviation and buckling, are encountered in the continuous annealing process. In this study, equipment and process features of continuous annealing, as well as the advantages and disadvantages of single taper roller and double taper roller in the prevention and treatment of the buckling and strip deviation were considered. Basing on a number of field experiments and theoretical studies, a new set of furnace roller profile curve was proposed and a set of optimisation model suitable for furnace roller was established, with travelling stability of the strip as the objective function. Test results of field production showed that the strip exhibited high speed and stability after optimisation, and the service cycle of the furnace roller was considerably improved. The results of this study provide an important economic benefit for the site and are valuable for further popularisation and application.

KEYWORDS:

• Continuous annealing
• furnace roller
• optimisation of the roller profile

Acknowledgements

A few experiments were made in Baosteel Stainless Steel Co., Ltd. We gratefully acknowledge the technical support of Baosteel.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This research was supported by Hebei Natural Science Foundation of China (No. E2016203385).