Abstract
The continuous casting of steel is a very successful process. One of the factors underlying this success is the performance of the mould flux. The mould powder is expected to be sufficiently “flexible or forgiving” to accommodate changes in casting conditions. However, it is necessary to select the mould powder for the given casting conditions in order to minimise process problems and product defects. This entails a detailed knowledge of how the casting powder behaves in the mold where it, successively, (i) sinters, (ii) melts to form a slag pool whereupon and (iii) molten slag infiltrates into the mould / strand gap to form solid and liquid slag films. The various factors affecting each of these processes are identified; this allows the factors to be manipulated to optimise the feature being studied e.g. the depth of the slag pool.
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