连铸用钢包的耐火内衬优化及疲劳寿命预测

摘要：连铸技术对钢包的性能要求越来越高，而传统钢包炉衬构件普遍存在使用寿命短、消耗高等问题。通过研究耐火材料特性，优化内衬结构布置，设计出一种长寿命、超保温的新型钢包，并基于数值模拟技术，对新型钢包与传统钢包在典型工况下的温度与应力进行对比分析。温度场模拟结果表明，新型钢包在保温性能上有较大的提升，钢包壳最高温度较传统钢包降低54℃。同时，应力场结果表明，新型钢包壳的最大应力减小了66.7MPa且整体应力分布更加均匀。最后将温度场和应力场的分析结果反馈到钢包的生产、制造、维护上，并进行实验验证。实验结果表明，新型钢包在保温与长寿等性能方面表现更好，内衬寿命提高了119炉次，达到了钢包设计、制造、维护一体化的效果。

Refractory lining optimization and fatigue life prediction for ladles for continuous casting

Abstract：The continuous casting technology requires higher and higher performance of the ladle, while the traditional ladle lining components generally have the problems of short service life and high consumption. A new ladle with long life and super insulation was designed by studying the characteristics of refractory materials and optimizing the lining structure arrangement. The temperature and stress felid of the new ladle and the traditional ladle under typical working conditions were compared and analyzed based on numerical simulation. The results of temperature field simulation show that the new ladle has a great improvement in thermal insulation performance, and the maximum temperature of the ladle shell is 54℃ lower than that of the traditional ladle. Meanwhile, the results of stress field show that the maximum stress of the new ladle shell is reduced by 66.7MPa and the overall stress distribution is more uniform. Finally, the analysis results of temperature field and stress field are fed back to the production, manufacturing and maintenance of the ladle, and experimental verification is carried out. The experimental results show that the new ladle performs better in terms of thermal insulation and longevity, and the lining life is increased by 119 heats, achieving the integration of ladle design, manufacturing and maintenance.