冲击压实工艺对3D打印砂型成形性能影响规律研究  

The Study on Influence of Impact Compaction Process on the Sand Mould Property by Sand 3D Printing

作　　者：李征 明禹 王驰腾 侯俊吉 LI Zheng;MING Yu;WANG Chiteng;HOU Junji(State Key Laboratory of Advanced Forming Technology and Equipment,Beijing National Innovation Institute of Lightweight Co.,Ltd.,Beijing 100044,China)

机构地区：[1]北京机科国创轻量化科学研究院有限公司先进成形技术与装备国家重点实验室,北京100044

出　　处：《铸造工程》2022年第4期67-71,共5页Foundry Engineering

基　　金：机械科学研究总院技术发展基金资助项目(311908Q9)。

摘　　要：设计制作了一种冲击压实铺粉机构,研究了冲击压实工艺对3D打印砂型成形精度和强度的影响规律,通过理论和实验对比分析了刮板、辊子和冲击压实三种不同铺粉工艺对砂型性能的影响,表明冲击压实工艺所打印砂型具有更高的精度和强度,且能够有效解决铺砂过程中的错层问题,有效改善铺砂质量。An impact compaction and powder spreading mechanism was designed,and the influence of impact compaction process on the forming accuracy and strength of sand 3D printing was studied.Theoretical comparison and analysis of the influence mechanism of different powder spreading processes(scraper,roller and impact compaction)on the sand mold performance were carried out and verified by experiments.The sand mold printed by impact compaction technology has higher accuracy and strength,and can effectively solve the problem of staggered layer in the process of sand laying,and improve the quality of sand laying.

关 键 词：冲击压实机构 砂型3D打印 压缩量 压实频率 

分 类 号：TG242[金属学及工艺—铸造]