摘要
以某航空发动机环形件的整体精铸为例,使用数值模拟技术分析整体精铸工艺的熔体充型、铸件凝固缺陷和尺寸变形等关键问题,为工艺设计和优化提供理论依据。模拟和试验结果表明:通过整体浇注既满足了铸件成形需求又保证了铸件尺寸精度。通过冒口保温,有效控制了铸件缩松缺陷。最后获得了合格铸件。
The integral casting process is the first choice for forming aeroengine parts with integrated design,for example,changing the welded or mechanically connected ring parts into an integral precision casting.Taking the integral investment casting of an aeroengine ring as an example,this paper analyzed the key problems of the integral investment casting process,such as melt filling,casting solidification defects and dimensional deformation,using numerical simulation technology,to provide a theoretical basis for the process design and optimization.The simulation and experimental results showed that the integral casting can not only meet the requirements of the casting forming,but also ensure the dimensional accuracy of the castings.The shrinkage porosity of the casting was effectively controlled by insulating the riser.Finally,the qualified castings were obtained.
作者
李朝阳
刘雅辉
王国祥
王俊
LI Zhao-yang;LIU Ya-hui;WANG Guo-xiang;WANG Jun(AECC Guizhou Liyang Aviation Power Co.,Ltd.,Guiyang 550000,Guizhou,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Zhongchao Aerospace Precision Casting Technology Co.,Ltd.,Shanghai 200030,China)
出处
《铸造》
CAS
北大核心
2023年第8期1042-1045,共4页
Foundry
基金
国家科技重大专项(2017-Ⅵ-0020-0093)。
关键词
高温合金
熔模铸造
整体铸造
工艺设计
数值模拟
superalloy
investment casting
integral casting
process design
numerical simulation
