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针对板坯内部裂纹质量缺陷的在线理论诊断分析,基于板坯连铸冶金限制准则的全面考虑,从传热状态、力学行为和钢种特性等多方面着眼,在数学模型中引入了多个重要的质量损失因子用以计算相应的裂纹生成指数,并结合板坯连铸生产的冶金特点、通过深入的理论研究获得了相关损失因子的数值计算方法及其对质量缺陷的影响效果,为板坯质量诊断模型的开发提供了必要的理论支持,具有良好的理论意义和应用价值。
According to the on-line theoretical diagnosis and analysis of internal crack quality defects in slabs, based on the comprehensive consideration of the limit rules of slab continuous casting metallurgy, a number of important mathematical models are introduced from the aspects of heat transfer state, mechanical behavior and steel properties. The mass loss factor is used to calculate the corresponding crack generation index. Based on the metallurgical characteristics of slab continuous casting, the numerical calculation method of relevant loss factor and its effect on quality defects are obtained through in-depth theoretical research. The development of the quality diagnosis model provides the necessary theoretical support and has good theoretical significance and application value.