基于冷冻复合铸型的铝合金铸造工艺研究  

Research on Aluminum Alloy Casting Process Based on Frozen Composite Casting

作　　者：梁昊天 刘丰 刘丽敏 张国磊 LIANG Haotian;LIU Feng;LIU Limin;ZHANG Guolei(State Key Laboratory of Advanced Forming Technology and Equipment,Beijing 100083,China;Beijing National Innovation Institute of Lightweight Ltd.,Beijing 100083,China)

机构地区：[1]先进成形技术与装备国家重点实验室,北京100083 [2]北京机科国创轻量化科学研究院有限公司,北京100083

出　　处：《铸造技术》2023年第11期1056-1061,共6页Foundry Technology

基　　金：国家重点研发计划(2021YFB3401200)。

摘　　要：随着人们环境保护理念的发展,传统砂型铸造的绿色化已经成为重要的研究方向之一,其中冷冻复合砂型铸造是典型的绿色铸造工艺。本文采用冷冻复合铸型铸造工艺进行了铝合金支架典型件的实验研究。采用铸造工艺数值模拟分析铸造工艺方案,并进行了冷冻复合铸型和传统树脂砂型铸造实验对比。铸件性能分析结果表明,冷冻复合砂型铝合金样件屈服强度提高了12.4%,抗拉强度提高了8.8%,伸长率提高了11.1%,验证了冷冻复合铸型工艺的优越性。With the development of people's environmental protection concept,the greening of traditional sand casting has become an important research direction,among which frozen composite sand casting is a typical green casting process.In this paper,an experimental study of a typical aluminum alloy bracket was carried out by using the frozen composite casting process.The casting process was analysed by numerical simulation,and an experimental comparison between frozen composite casting and traditional resin sand casting was carried out.The results of casting performance analysis show that the yield strength,tensile strength and elongation of the frozen composite sand mold aluminum alloy sample are increased by 12.4%,8.8%and 11.1%,respectively,which proves the superiority of the frozen composite casting process.

关 键 词：冷冻复合铸型 数值模拟 金相组织 力学性能 

分 类 号：TG292[金属学及工艺—铸造]