为了指导生产实践,以结晶器内保护渣渣膜为研究对象,应用传热学原理,模拟分析了保护渣渣膜结构的变化规律。计算结果表明:结晶器内自弯月面向下,液渣层厚度先增大后减小;在液渣膜厚度减小时,结晶体开始形成,并随着温度的降低,结晶结束;此后,玻璃体开始大量生成,形成玻璃层。构建的数学模型对于改善铸坯质量和优化保护渣设计均具有理论指导意义。 In order to guide the practice of production, taking the mold powder in the mold as the research object, the law of heat transfer was used to simulate and analyze the variation law of the slag film structure. The calculation results show that the crystallite begins to form when the thickness of the liquid slag decreases and crystallizes with the decrease of temperature when the thickness of the liquid slag layer first increases and then decreases since the meniscus faces downward in the crystallizer. After that, the vitreous begins Generated in large quantities to form a glass layer. The mathematical model constructed has theoretical significance for improving the quality of slab and optimizing the design of mold flux.