Research on Ultrasonic Testing Technology for Extruded Nozzle of Main Steam Super Pipeline

LIAO Yingpeng; WANG Lan; SU Sheng; ZOU Guowei

doi:10.7512/j.issn.1001-2303.2024.12.18

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Research on Ultrasonic Testing Technology for Extruded Nozzle of Main Steam Super Pipeline
Vol. 54, Issue 12, Pages: 113-120(2024)
Published： 25 December 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.12.18
稿件说明：

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廖应鹏，王岚，苏胜，等.主蒸汽超级管道挤压管嘴超声检测工艺研究［J］.电焊机，2024，54（12）：113-120.

LIAO Yingpeng, WANG Lan, SU Sheng, et al.Research on Ultrasonic Testing Technology for Extruded Nozzle of Main Steam Super Pipeline[J].Electric Welding Machine, 2024, 54(12): 113-120.
廖应鹏，王岚，苏胜，等.主蒸汽超级管道挤压管嘴超声检测工艺研究［J］.电焊机，2024，54（12）：113-120. DOI： 10.7512/j.issn.1001-2303.2024.12.18.

LIAO Yingpeng, WANG Lan, SU Sheng, et al.Research on Ultrasonic Testing Technology for Extruded Nozzle of Main Steam Super Pipeline[J].Electric Welding Machine, 2024, 54(12): 113-120. DOI： 10.7512/j.issn.1001-2303.2024.12.18.

摘要

针对主蒸汽超级管道挤压管嘴的超声检测工艺进行研究，旨在确保其成形质量和安全性。通过分析挤压工艺过程、受力情况和超声检测原理，结合相关标准和实际案例，探讨了检测范围、对比试块、探头选择、盲区控制、非缺陷波识别和验收标准等方面。研究发现，目前采用的超声检测手段能够有效识别挤压管嘴中的缺陷，并确保其成形质量。检测过程中存在一些需要改进的地方，如对比试块的人工反射体切槽长度不符合标准要求，部分管嘴直段盲区无法通过加工去除，以及轮廓回波识别的可靠性等问题。建议进一步研究不同曲率管嘴的检测技术，并开发更完善的对比试块和探头，以提高检测的准确性和可靠性。

Abstract

This study focuses on the ultrasonic testing technology for the extruded nozzle of main steam super pipelines

aiming to ensure its forming quality and safety. By analyzing the extrusion process

stress conditions

and the principles of ultrasonic testing

and combining relevant standards with actual cases

the study discusses various aspects such as the testing scope

reference blocks

probe selection

blind area control

non-defect wave identification

and acceptance criteria. The research finds that the current ultrasonic testing methods can effectively identify defects in the extruded nozzles and ensure the quality of their formation. However

there are areas for improvement in the testing process

such as the length of artificial reflector notches in reference blocks not meeting standard requirements

some straight sections of nozzles having blind areas that cannot be removed by processing

and issues with the reliability of contour echo identification. It is suggested that further research should be conducted on the testing techniques for nozzles with different curvatures

and more refined reference blocks and probes should be developed to improve the accuracy and reliability of the testing.

关键词

主蒸汽超级管道挤压管嘴超声检测受力分析

Keywords

main steam super pipelineextruded nozzleultrasonic testingstress analysis

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