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论文类型：期刊论文

发表时间：2013-01-01

发表刊物：IRONMAKING & STEELMAKING

收录刊物：SCIE、EI、Scopus

卷号：40

期号：1

页面范围：25-31

ISSN号：0301-9233

关键字：Continuous casting; Numerical simulation; Mould; Steel billet; Shrinkage; Solidification

摘要：Understanding the shrinkage behaviour of a steel billet is very important for designing the continuous casting mould, and conversely, a well designed mould is beneficial when matching the shrinkage behaviour of the billet. The shrinkage behaviour of a billet is hard to measure in situ during continuous casting but can be calculated by numerical simulation. A three-dimensional finite element model has been built to simulate the thermal and stress fields of the billet in the mould. The dynamic thermal boundary condition, the effect of ferrostatic pressure and the temperature dependent thermophysical parameters have been considered in the model. The shrinkage of billet when considering ferrostatic pressure is on average 0.08 mm smaller than when not considering ferrostatic pressure. The temperature and stress distributions are analysed in the present paper, and based on this analysis, a novel petal-like mould was designed and its taper determined. The designed mould has been tested in industrial practice showing better lifetime and billet quality.