灰铸铁钢锭模的材质与结构的优化  

Optimization of Material Properties and Structure of Grey Cast Iron Ingot Mold

作　　者：崔新鹏[1] 刘增辉[1] 曾祥勇[1] 吴春京[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《热加工工艺》2014年第9期67-69,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(51274038)

摘　　要：基于ABAQUS模拟了钢锭模工况下的热应力分布,并用正交试验法分析了材料热物参数和结构参数对热应力分布的影响。结果表明,降低材料的弹性模量和热膨胀系数、减小钢锭模内径和外表面换热系数、增加材料的导热系数,能够降低灰铸铁钢锭模外表面的横向拉应力,而在常用范围内模锭比的影响并不显著。The numerical simulation of thermal stress distribution of grey cast iron ingot mold under working condition was carried out based on ABAQUS. The effects of thermal and physical coefficients as well as the structure on the distribution of thermal stress were analyzed by orthogonal matrix method. The results show that the horizontal thermal stress at the outside surface reduces by decreasing the elastic modulus and the coefficient of thermal expansion of the material, decreasing the inner diameter and the coefficient of heat transfer of the outside surface, or increasing the thermal conductivity. However, the effect of the mold-ingot ratio is slight in common range.

关 键 词：钢锭模 热应力 正交试验 模锭比 

分 类 号：TG261[金属学及工艺—铸造]