摘要
使用水冷铜坩埚真空感应熔炼炉熔炼Ti12Nb12Zr2Mo合金,采用离心浇注方法制备熔模精密铸件。结果表明:铸件热节部位产生的收缩缺陷无法完全消除,采用型壁反压力充型的铸件,充型能力不足,产生的收缩缺陷较多;采用直接充型的方式可以提高铸件的充型能力,对于改善缩孔缺陷的产生有明显效果。铸件解剖结果显示,所产生的缩孔大小在0.5-1mm左右,符合钛合金精密铸件使用规范要求。
A cold-walled crucible vacuum induction melting furnace is used to smelt Ti12Nb12Zr2Mo alloy,and a centrifugal casting method is used to prepare investment precision castings.The results show that the shrinkage defects produced in the hot joints of the castings cannot be completely eliminated.Castings filled with wall back pressure have insufficient filling capacity and produce more shrinkage defects.The direct filling method can improve the filling capacity of the casting,and has a significant effect on improving the shrinkage defects.The results of the anatomy of the casting show that the size of the shrinkage cavity produced is about 0.5-1mm,which meets the requirements of the specification for the use of titanium alloy precision castings.
作者
王微
尹春艳
俞蓓
张帅谋
李小城
WANG Wei;YIN Chunyan;YU Bei;ZHANG Shuaimou;LI Xiaocheng(School of Aviation and Materials, Anhui Technical College of Mechanical and Electrical Engineering, Wuhu 241000, China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2021年第2期94-97,共4页
Journal of Jiamusi University：Natural Science Edition
基金
安徽省教育厅优秀拔尖人才培育资助重点项目(gxyqZD2020059)
安徽省高校省级自然科学重点研究项目(KJ2018A060)
安徽省质量工程项目(2019zyk39)
安徽机电职业技术学院地方技能型高水平大学校级特色高水平专业项目(2019tgzy04)。
关键词
熔模铸造
无损检测
离心浇注
缩孔
investment casting
non-destructive testing
centrifugal casting
shrinkage
