长输管道自动焊对接环焊缝熔铜裂纹的检测与判定  

Detection and determination of copper weld cracks of opposite joint circumferential weld in automatic welding for long distance pipeline

作　　者：李涛 周仪 吕超薛 徐盛金 刘南 袁广钰 王有发 LI Tao;ZHOU Yi;LYU Chaoxue;XU Shengjin;LIU Nan;YUAN Guangyu;WANG Youfa(Sichuan Paipu Pressurization and Equipment Inspection&Testing Co.,Ltd.,Chengdu 610100,China;Beijing SIPAIKE Engineering Project Management Co.,Ltd,Beijing 100029,China;Construction Project Management Branch,Pipe China,Langfang 065000,China)

机构地区：[1]四川派普承压与动载设备检测有限公司,成都610100 [2]北京斯派克工程项目管理有限责任公司,北京100029 [3]国家管网集团建设项目管理分公司,廊坊065000

出　　处：《无损检测》2024年第7期68-74,共7页Nondestructive Testing

摘　　要：熔铜裂纹是长输管道自动焊对接环焊缝常见缺陷之一,PAUT(相控阵超声)检测、TOFD(超声衍射时差法)检测、AUT(全自动超声)检测是发现熔铜裂纹的有效检测方式,射线检测对熔铜裂纹的检测具有较大的局限性,可能表现出非典型裂纹特征,甚至无法发现熔铜裂纹。使用各检测方法对熔铜裂纹进行检测试验,结果表明,对于自动焊熔铜裂纹的判定,需结合以上多种检测方法进行准确定性。Copper crack is one of the common defects of opposite joint circumferential welding seam in automatic welding for long-distance pipeline.Phased array ultrasonic detection,TOFD detection and AUT(Automatic ultrasonic testing)are effective detection methods to detect copper cracks.X-ray detection has great limitations on the detection of copper cracks,which may show typical crack characteristics and even fail to detect copper cracks.The cracks of molten copper were detected by various detection methods,and the results showed that,the determination of automatic welding copper cracks should be combined with the above detection methods to accurately characterize the copper cracks.

关 键 词：熔铜裂纹 自动焊 相控阵超声 TOFD AUT 综合判定 

分 类 号：TG115.28[金属学及工艺—物理冶金]