摘要
Abstract
This study focuses on the ultrasonic testing technology for the extruded nozzle of main steam super pipelines,aim-ing to ensure its forming quality and safety.By analyzing the extrusion process,stress conditions,and the principles of ultra-sonic 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 re-search 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 re-flector 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 fur-ther 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Key words
main steam super pipeline/extruded nozzle/ultrasonic testing/stress analysis分类
信息技术与安全科学
