Phased array ultrasonic testing for welded joint of austenitic stainless steel pipe with small diameter
-
摘要: 针对奥氏体不锈钢小径管焊接接头的检测难点，开展了专用试块设计、检测参数优化、检测能力验证、缺陷分析评定等相关技术的研究，总结形成了一套相控阵超声检测工艺和评定方法。检测工艺适用于外径为32～100 mm，壁厚为4～20 mm的奥氏体不锈钢小径管焊接接头的质量评定，通过在火力发电机组安装和检修工程中的成功应用，验证了该工艺的可靠性和准确性，并有效地降低了放射源的管理风险和检测成本。该检测工艺的开发可为奥氏体不锈钢小径管焊接接头的相控阵超声检测提供参考。Abstract: In view of the difficulties in the inspection of austenitic stainless steel small diameter pipe welding joint, a series of measures were taken, such as the development of special test block design, detection parameter optimization, detection capability verification, defect analysis and evaluation, etc. Based on this, a set of inspection process and evaluation methods of using phased array ultrasonic testing technology were summarized. This testing processes is suitable for quality evaluation of austenitic stainless steel small diameter pipe welding joint with outer diameter of 32~100 mm and wall thickness of 4~20 mm. The successful application in thermal power unit installation and maintenance engineering verifies the reliability and accuracy of the process, ensures the detection quality and effectively reduces the risk of radioactive source management and detection cost. The development of this detection technology provides a feasible technical scheme for phased array ultrasonic testing of austenitic stainless steel small diameter pipe welded joint.
-
-
[1] ZHANG Z Z,GONG J M,LIANG H. Research on acoustic emission monitoring of pitting corrosion on 304 stainless steel[J]. Chinese Journal of Acoustics, 2013,32(1):71-71.
[2] 谢航, 张益成, 周礼峰, 等. 奥氏体不锈钢管道环焊缝的超声相控阵检测[J]. 无损检测,2017,39(3):23-25. [3] XIE Z L, ZHOU H,ZHENG Y F. Simulation of the acoustic field emitted from medical linear transducer in a heterogeneous tissue[J]. Chinese Journal of Acoustics,2014,33(2):147-155.
[4] ZHANG C,WANG Y Y. Sound field of thermoacoustic tomography based on a modified finite-difference time-domain method[J]. Chinese Journal of Acoustics,2009,28(3):209-219.
[5] 郭德瑞, 刘建屏, 季昌国, 等. 超临界机组高温高压管道焊缝检测方法对比[J]. 无损检测,2018,40(6):32-37. [6] 齐高君, 徐学堃, 张勇. 直孔反射体在小径管超声相控阵检测中的应用[J]. 无损检测,2018,40(3):37-40. [7] 杨敬, 吴斌, 焦敬品, 等. 各向异性焊缝缺陷超声阵列全聚焦成像方法[J]. 声学学报,2019,41(1):125-135. [8] DB37/T 3142-2018小径管焊接接头相控阵超声检测技术规程[S].
计量
- 文章访问数: 7
- HTML全文浏览量: 0
- PDF下载量: 4
下载:
