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由于钢水的凝固收缩,在结晶器铜管内壁和凝固坯壳之间形成气隙。气隙对结晶器的传热与铸坯凝固有重要影响。为了减少气隙,结晶器内腔加工成带有倒锥度的形式。锥度过大过小都会带来一定的质量问题并影响生产顺行。因此,结晶器锥度设计是高效连铸技术的关键要素之一。在系统分析国内外结晶器常用设计方法的基础上,提出了一个抛物线锥度设计的计算模型并形成应用软件。为高效连铸结晶器设计提供了理论基础。
Due to the solidification shrinkage of the molten steel, an air gap is formed between the inner wall of the mold copper tube and the solidifying shell. Air gap on the mold heat transfer and slab have a significant impact on solidification. In order to reduce the air gap, the mold cavity is machined into a form with inverted taper. Taper too large will bring some quality problems and affect the production line. Therefore, the mold taper design is one of the key elements of high efficiency continuous casting technology. Based on the systematic analysis of the commonly used design methods of crystallizer at home and abroad, a computational model of parabolic taper design and application software are proposed. It provides a theoretical basis for efficient continuous casting mold design.