利用商业软件计算了超宽包晶钢连铸过程中初生坯壳所受应力.研究结果表明,由于包晶反应引起的体积收缩,包晶成分钢种的凝固坯壳表面应力显著大于非包晶钢成分钢种,在距铸坯中心约200 ～400 mm处应力出现极大值；随板坯宽度的增加,坯壳表面应力增大,应力极值点向坯壳中心方向移动；连铸工艺参数直接影响包晶钢表面应力大小,随过热度减小,拉速增加,结晶器冷却强度减弱,坯壳表面应力减小,铸坯表面裂纹发生概率降低.在本研究条件下,对断面为3200 mm× 150 mm的铸坯,适宜的过热度为15～25℃,拉速为1.2 m/min,结晶器宽面冷却强度为5500 L/min.
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