摘要
可锻铸铁连接件广泛应用于工业领域和公共交通领域,与其他材质的连接件相比,具有性能优良、易于拆卸等优点。但目前可锻铸铁连接件生产质量不稳定,合格率不能满足要求,存在砂眼、裂纹等缺陷问题。本文针对可锻铸铁连接件进行了铸造工艺设计,应用ProCAST有限元软件对连接件铸造宏观过程进行了数值模拟。通过模拟铸件的充型及凝固过程,获得了浇注时间和浇注温度等工艺参数对铸件质量的影响规律,优选出了合理的工艺条件。同时,对铸件凝固过程的应力、应变情况进行了模拟分析,确保铸件在所选工艺条件下不会因应力过大导致裂纹产生。通过优化工艺条件,使产品实际生产的合格率由原85%提高至95%以上。
Malleable cast iron connectors are widely used in industrial and public transportation fields.Compared with other materials,they have the advantages of excellent performance and easy disassembly.However,at present,the production quality of malleable cast iron connectors is unstable,and the qualified rate cannot meet the requirements.There are defects such as sand holes and cracks.In this paper,the casting process design of malleable iron connectors was carried out,and the macro process of connector casting was simulated by ProCAST finite element software.By simulating the filling and solidification process of the casting,the influence of process parameters such as pouring time and pouring temperature on the quality of the casting was obtained,and the reasonable process conditions were optimized.At the same time,the stress and strain of the casting solidification process were simulated and analyzed to ensure that the casting would not crack due to excessive stress under the selected process conditions.By optimizing the process conditions,the qualified rate of the actual production of the product increased from 85%to more than 95%.
作者
周旭
莫健
李向明
李晓东
ZHOU Xu;MO Jian;LI Xiang-ming;LI Xiao-dong(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Yunnan Yunhai Casting Co.,Ltd.,Yuxi 652701,Yunnan,China)
出处
《铸造》
CAS
2024年第1期91-97,共7页
Foundry
关键词
可锻铸铁
连接件
模拟仿真
铸造工艺
malleable cast iron
connecting piece
numerical simulation
casting process
