GIS薄壁铝合金壳体对接焊缝超声波检测若干问题探析
Exploration of several issues in ultrasonic testing of butt weld of thin-walled aluminum alloy shell based on GIS
孙庆峰 1王异成 2何狄龙 3金江舟 1沈茎 1陈胤桢4
作者信息
- 1. 浙江省电力锅炉压力容器检验所有限公司,浙江 杭州 310014
- 2. 杭州意能电力技术有限公司,浙江 杭州 310014
- 3. 浙江容大电力工程有限公司,浙江杭州 311400
- 4. 国网浙江省电力有限公司电力科学研究院,浙江杭州 310014
- 折叠
摘要
文中针对A型超声波探伤技术在GIS薄壁铝合金壳体对接焊缝检测中反射波认定存在较大争议这一问题展开讨论.从壳体对接焊缝焊道坡口形式着手,结合超声波反射波的特性,通过理论分析,给出了几种常见缺陷的反射波信号特征.发现通过反射信号深度、水平位置,结合坡口形式即可判定缺陷性质.结果表明:掌握常见的GIS薄壁铝合金壳体对接焊缝缺陷信号特征,可以有效排除"虚假信号"的干扰,为相关检测的进行提供理论依据.
Abstract
There was the controversy in the butt weld detection of GIS thin-walled aluminum alloy shell with A-type ultrasonic flaw detection technology.Based on the type of butt weld bead groove of shell and the characteristics of ultrasonic reflection wave,several common signal characteristics of defect reflection wave were given through theoretical analysis.It was found that the nature of the defect could be roughly determined by the depth and horizontal position of the reflected signal,and the groove type.The results showed that the common signal characteristics of GIS thin-walled aluminum alloy shell butt weld defects could effectively eliminate the interference of"false signals",and provided a theoretical basis for the development of relevant detection tests.
关键词
GIS/薄壁铝合金/A型超声波/缺陷分析Key words
GIS/thin-walled aluminum alloy/A-mode ultrasound/defect identification引用本文复制引用
基金项目
国网浙江省电力有限公司科技项目(5211DS17002B)
出版年
2024
NETL
NSTL
万方数据