大型塑料模具用钢锭凝固和内部缺陷的数值模拟研究  

NUMERICAL SIMULATION OF SOLIDIFICATION AND INNER DEFECT OF LARGE FORGING INGOT FOR PLASTIC MOLD

作　　者：党卫东[1] 吴晓春[1] 闵永安[1] 汪宏斌[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《上海金属》2010年第2期53-57,共5页Shanghai Metals

基　　金：国家支撑计划课题高品质模具钢锻材关键技术开发(2007BAE51B04)

摘　　要：用数值模拟方法研究了45 t制造塑料模具用大型钢锭的凝固过程,预测内部偏析和缩孔、疏松的分布情况,与实际钢锭和锻件内部质量比较,证明了模拟结果的合理性,因而表明,可以采用数值模拟的方法优化大型铸造钢锭结构,改进钢锭内部质量,节约生产成本。The solidification process of 45 t steel ingot for plastic mold was studied with nu- merical simulation, by which the flaw, shrinkage cavity and porosity distribution during casting were predicted. The inner quality of ingot and forging product were in agreement with the simulation re- suits. The results indicated that numerical simulation method could optimize the structure of large in- got, improve the inner quality, and save the cost.

关 键 词：塑料模具钢 大型钢锭 凝固缺陷 数值模拟 

分 类 号：TF771.2[冶金工程—钢铁冶金]