水电用大型蝶阀铸钢件的超声检测工艺
Ultrasonic test technology of cast steel for large butterfly valves used in hydropower
曾凌1
作者信息
- 1. 福建省锅炉压力容器检验研究院三明分院,福建三明 365000
- 折叠
摘要
采用超声检测技术对蝶阀铸钢件的埋藏缺陷进行检测.在检测工艺制定过程中结合铸钢件特有的声学特性,通过对比试验选取合适的单/双晶纵波直探头参数,并分别阐述了单晶和双晶直探头的检测工艺要点.根据检测经验总结出大型蝶阀铸钢件常出现的4种典型聚集性内部缺陷的波形特征和机理.实践证明,采用单/双晶纵波直探头的复合检测工艺作为一种实用的无损检测技术,能够确保进入精加工工序的蝶阀铸钢件满足相应的质量要求.
Abstract
The embedded flaws of butterfly valve steel castings were detected by ultrasonic testing technology.In the estab-lishment of detection process,the appropriate single/double crystal longitudinal wave straight probe parameters were select-ed through comparative experiments by combining the unique acoustic characteristics of steel castings.Moreover,the key points of the detection process for single crystal and double crystal straight probes were elaborated separately.On the basis of testing experience,the waveform characteristics and mechanisms of four typical clustered internal defects commonly found in large butterfly valve steel castings were summarized.It was proven that the composite testing process using single/double crystal longitudinal wave straight probes as a practical non-destructive testing technology could ensure that the steel castings of butterfly valves entering the precision machining process meet the corresponding quality requirements.
关键词
蝶阀铸钢件/超声波检测/直探头/缺陷波形Key words
butterfly valve cast steel part/ultrasonic testing/straight probe/defect waveform引用本文复制引用
基金项目
福建省锅炉压力容器检验研究院科技项目(FJGJ2022004)
出版年
2024
NETL
NSTL
万方数据