基于微焦点工业CT的高压涡轮叶片缺陷检测技术  

High-Pressure Turbine Blade Defect Detection Technology Based on Micro-Focus Industrial CT

作　　者：李新越 杨龙 孙春贵 李兴捷 刘洋 LI Xin-yue;YANG Long;SUN Chun-gui;LI Xing-jie;LIU Yang(National Key Laboratory of Advanced Casting Technologies,Shenyang Research Institute of Foundry Co.,Ltd.,CAM,Shenyang 110022,Liaoning,China;Deep Sea Precision Technology(Shenzhen)Co.,Ltd.,Shenzhen 518107,Guangdong,China)

机构地区：[1]中国机械总院集团沈阳铸造研究所有限公司高端装备铸造技术全国重点实验室,辽宁沈阳110022 [2]深海精密科技(深圳)有限公司,广东深圳518107

出　　处：《铸造》2023年第7期904-908,共5页Foundry

基　　金：中央引导地方科技发展专项资金(2022JH6/100100011)。

摘　　要：高压涡轮叶片是航空航天用发动机的核心部件,其铸造质量是影响发动机性能的主要因素之一。由于叶片结构复杂,铸造缺陷多,成品合格率低,必须对其进行高精度的无损检测。本文采用微焦点工业CT对铸造高压涡轮叶片进行CT扫描与重建,通过投影图像使用滤波反投影算法得到了叶片的三维数据和断层图像,分析了透照间隔角度对缺陷识别的影响,对内部结构缺陷如疏松等进行可视化分析。High-pressure turbine blades are the core components of aerospace engines,and their casting quality is one of the main factors affecting engine performance.Due to the complex structure of blade,many casting defects and low qualified rate of finished product,it is necessary to carry out high-precision nondestructive testing.In this paper,micro-focus industrial CT was used to conduct CT scanning and reconstruction of cast high-pressure turbine blades.Three-dimensional data and tomography images of blades were obtained through projection images and filtered back projection algorithm.The influence of transmittance interval Angle on defect identification was analyzed,and the internal structural defects such as porosity were visually analyzed.

关 键 词：工业CT 高压涡轮叶片 疏松 

分 类 号：TG247[金属学及工艺—铸造]