应用无量纲Niyama判据优化大型薄壁铸件浇冒系统  

Optimization of Pouring and Riser System for Large-scale Thin-wall Castings Based on Dimensionless Criterion Niyama

作　　者：康茂东[1,2] 王俊[1,3,4,2] 高海燕[1,4,2] 王国祥[1,2] 何树先[1,2] 

机构地区：[1]上海交通大学上海市先进高温材料及其精密成形重点实验室,上海200240 [2]上海中超航宇精铸科技有限公司,上海200234 [3]上海交通大学金属基复合材料国家重点实验室,上海200240 [4]高新船舶与深海开发装备协同创新中心,上海200240

出　　处：《铸造技术》2017年第7期1635-1639,共5页Foundry Technology

基　　金：国家重点研发计划资助项目(2016YFB0701405);中国博士后科学基金资助项目(2016M591668);航空科学基金资助项目(2016ZE57010);上海市科学技术委员会资助项目(14521100601)

摘　　要：为提高大型薄壁铸件内部质量,采用无量纲Niyama判据优化了大型薄壁铸件浇冒系统。实验结果表明,浇冒系统优化后铸件支板中部显微疏松指数大幅度减少,显微疏松指数均未超过1,验证了无量纲Niyama判据优化大型薄壁铸件浇冒系统的可行性。In order to improve the inner quality of large-scale thin-walled castings, the pouring and riser system for large-scale thin-walled castings were optimized by Dimensionless Niyama Criterion. The experimental results show that the microporosity index in the middle part of the supported slab greatly reduces after the optimization of the pouting and riser system, and the microporosity index is less than 1. The feasibility of optimizing the pouring and riser system for large-scale thin-walled castings by Dimensionless Niyama Criterion was verified.

关 键 词：大型薄壁铸件 高温合金 显微疏松 预测 判据 

分 类 号：TG23[金属学及工艺—铸造]