摘要
以名义成分为Zr_(60)Ti_(40)的钛锆合金为研究对象,以简单圆筒结构铸件为载体,对不同铸造工艺及不同铸型材料的方案进行了数值模拟及试验验证工作。数值模拟结果表明,陶瓷型壳离心浇注及单浇口陶瓷型壳重力顶注方案金属液充型平稳顺畅,无溅射及汇流现象发生;金属液补缩效果良好,铸件内部无大尺度缩孔生成。试验验证显示,两种方案浇注出的铸件外观无冷隔等表面缺陷,内部未发现明显的大尺度缩孔、气孔、夹杂等缺陷,与数值模拟一致性较好。
Taking titanium-zirconium alloy with nominal composition of Zr_(60)Ti_(40) as the research object and simple cylinder structure castings as the carrier,numerical simulation and experimental verification of schemes of different casting processes and different mold materials were carried out.The simulation results show that metal liquid filling is smooth for the centrifugal pouring using ceramic shell and the gravity top pouring using single gate ceramic shell,and no sputtering and confluence phenomenon appear.Liquid metal feeding effect is good,and no large scale shrinkages generate in the castings.According to the experimental verification,there are no surface defects such as cold shut on the appearance in the castings,and no obvious defects such as large-scale shrinkage,blowhole and inclusion are found inside the castings,which is in good agreement with the numerical simulation results.
作者
张健辉
张宁
纪志军
李峰
南海
ZHANG Jian-hui;ZHANG Ning;JI Zhi-jun;LI Feng;NAN Hai(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology,Beijing 100084,China;BAIMTEC Material Co.,Ltd.,Beijing 100094,China)
出处
《铸造》
CAS
2024年第4期481-488,共8页
Foundry
基金
冲击环境材料技术重点实验室基金(6142902230102)。
