USE OF ELECTROMAGNETIC ROTATING-FIELD STI RRERS IN A CONTINUOUS CASTER

Objective. Stahlwerk Oberhausen GmbH was established in the course of the restructuring of Thyssen Stahl AG. Due to the stark decline in the production of simple qualities, caused by the market situation, it be came necessary to change to quality steel production. The installation of electromagnetic stirring equipment was indispensable to be able to meet the customers' quality requirements. Summary. Based on the resul ts achieved with a rotating-field stirrer beneath the mould of a test strand in the years from 1988 to 1990, the step of investing in a stir ring system to improve the continuously cast billet material was reali sed in September 1995. All six strands of the continuous billet easter have been fitted with rotating-field stirrers beneath the moulds to e lectromagnetically stir the liquid steel. A great improvement in inter nal quality has been achieved, particularly for high-carbon steels. Th rough the investment in the stirring equipment it has been possible to significantly increase the share of quality steel production. (E 2976 1).