Abstract
The continuous heat treatment of steel has been a widely used practice throughout the world for a considerable time. However, it is only in the past decade that the enormous potential of continuous annealing was recognized so that it is now possible to produce steels with a much wider variety of properties than is possible by batch annealing. These possibilities have been revealed not only by advances in controlling and configuring continuous annealing lines, but also in up-stream and downstream technology. These advances have made consistency the word which is synonymous with continuously annealed steel. This paper will review the fundamentals of continuous annealing and associated metallurgy, and the effect of processing variables on the product properties. The acceptable variation in processing to give an uniform product will be described.
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