Ultrasonic test technology of cast steel for large butterfly valves used in hydropower

ZENG Ling

Physics Examination and Testing ›› 2024, Vol. 42 ›› Issue (4) : 42-47.

PDF(2845 KB)
PDF(2845 KB)
Physics Examination and Testing ›› 2024, Vol. 42 ›› Issue (4) : 42-47. DOI: 10.13228/j.boyuan.issn1001-0777.20230095
Measuring Technology

Ultrasonic test technology of cast steel for large butterfly valves used in hydropower

Author information +
History +

Abstract

The embedded flaws of butterfly valve steel castings were detected by ultrasonic testing technology. In the establishment of detection process, the appropriate single/double crystal longitudinal wave straight probe parameters were selected 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.

Key words

butterfly valve cast steel part / defect waveform / ultrasonic testing / straight probe

Cite this article

Download Citations
ZENG Ling. Ultrasonic test technology of cast steel for large butterfly valves used in hydropower[J]. Physics Examination and Testing, 2024, 42(4): 42-47 https://doi.org/10.13228/j.boyuan.issn1001-0777.20230095

References

[1] 张雪凌,李茂林.发电机磁轭Q345C宽厚钢板探伤不合格原因分析[J].物理测试,2022,40(6):5.
[2] 拓凌玺,李磊,项鹏.铸钢件浅表层缺陷的超声波检测[J].铸造,2020,69(4):4.
[3] 胡春亮.超声检测在铸造生产中的应用[C]//第十三届21省(市、区)4市铸造会议暨第七届安徽省铸造技术大会论文集.黄山:安徽省机械工程学会,2012:360.
[4] 陈昌华,陈新华,张闻骋,等.42CrMo模铸钢锭凝固场数值仿真与超声检测分析[J].物理测试,2022,40(2):5.
[5] 拓凌玺,李飞,李磊,等.高合金铸钢件超声波检测及波形识别[J].铸造设备与工艺,2016(6):41.
[6] 罗云东,于宝虹.大型铸件超声波检测工艺控制[J].大型铸锻件,2010(5):4.
[7] 胡柏上.脉冲反射法超声检测的幻象波及其应对探讨[J].物理测试,2023,41(5):59.
[8] 韩红民.薄壁铸钢件双晶探头超声波探伤方法研究[J].矿山机械,2005(9):98.
[9] 褚长春.影响铸件超声检测声波衰减的因素[J].科技创新与应用,2016(21):1.
[10] 于学峰.双晶直探头对船用铸钢件的超声波检测[J].无损检测,2012,34(2):3.
[11] 国家能源局发布. NB/T 47013.3—2015 承压设备无损检测[S].北京:新华出版社,2015.
PDF(2845 KB)

29

Accesses

0

Citation

Detail

Sections
Recommended

/