摘要
为提高燃气轮机空心透平叶片制备合格率,利用计算机断层扫描技术(CT)、三维扫描技术、超声等无损检测技术对熔模铸造透平叶片过程中关键阶段展开尺寸测量,实现了陶瓷型芯-蜡模-模壳-叶片铸件的全过程尺寸检测。通过三维扫描测量结果对CT测量技术进行精度校准,结果表明,CT技术对陶瓷型芯、蜡模的检测精度可以满足测量精度要求,并将CT技术进一步应用于模壳尺寸的检测。此外,利用工业CT检测陶瓷型芯、蜡模、模壳内腔及壁厚尺寸精度的同时,可以实现对其内部裂纹及缩孔等缺陷的检测和评估。本研究建立的空心透平叶片制备全流程尺寸测量方法为保障空心透平叶片制备,提高大尺寸空心透平叶片精密铸造成品合格率提供了有力数据支撑。
In order to improve the qualification rate of gas turbine hollow turbine blades,non-destructive testing technologies such as X-ray computed tomography(CT),three-dimensional scanning(3D)and ultrasound were used to carry out dimensional measurement of turbine blades in key stages of investment casting,and the whole process of ceramic core,wax mold,mold shell and blade castings was realized.The results show that the CT technology can meet the measurement accuracy requirements of ceramic core and wax mold,and is further applied to the measurement of mold shell size.In addition,the dimensional accuracy of ceramic core,wax mold and mold shell,inner cavity and wall thickness can be detected and evaluated by using CT.The dimensional measurement method of the whole process of hollow turbine blade preparation established in this study provides strong data support for ensuring the preparation of hollow turbine blades and improving the qualified rate of large-size hollow turbine blade precision casting products.
作者
胡童童
王江
段方苗
帅三三
玄伟东
任忠鸣
HU Tongtong;WANG Jiang;DUAN Fangmiao;SHUAI Sansan;XUAN Weidong;REN Zhongming(State Key Laboratory of Advanced Special Steels,School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;China United Heavy Gas Turbine Technology Co.,Ltd.,Beijing 100016,China)
出处
《航空制造技术》
北大核心
2025年第14期92-98,共7页
Aeronautical Manufacturing Technology
基金
国家自然科学基金(52271035)
上海市青年科技启明星项目(20QA1403800,21QC1401500)
上海市科委项目(21511103600,20511107700)。
关键词
空心透平叶片
全流程尺寸测量
计算机断层扫描技术
三维激光扫描技术
超声法
Hollow turbine blades
Whole process dimension measurement
Computed tomography technology
Three dimensional laser scanning technology
Ultrasonic method
