Abstract
The paper examines the reasons for the exceptional growth in secondary steelmaking over recent years and outlines the features and benefits of the major secondary steelmaking technologies. Development of specific secondary steelmaking practices, including stirring, degassing, injection, and reheating, to produce high performance steels for a wide range of applications is discussed. The extensive secondary steelmaking facilities within British Steel are presented, indicating the high level of capital expenditure that has been made in this area. Alternative process routes are compared with respect to alloy requirements and to the control of metallurgical specifications demanded by the in service properties of the steel product. The concept of multiple treatments at one processing site is examined with respect to the design of the process route for improved logistical control and scheduling.
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