聚乙烯管道电熔焊接超声相控阵检测技术研究  

Research on Ultrasonic Phased Array Detection Technology for Polyethylene Pipe Electrofusion Welding

作　　者：杨宇清[1] 蔚道祥 YANG Yuqing;WEI Daoxiang

机构地区：[1]上海市特种设备监督检验技术研究院,上海200062

出　　处：《上海化工》2020年第4期53-56,共4页Shanghai Chemical Industry

摘　　要：电熔焊接是聚乙烯管道的主要连接方式之一,由于聚乙烯材料声波衰减系数较大,电熔焊接接头内部金属丝对检测干扰较大,利用常规超声检测手段很难有效检出聚乙烯电熔接头内的各类缺陷。制作了聚乙烯管道电熔焊接接头内部典型缺陷,使用超声相控阵检测技术对其进行了可靠性试验测试。结果表明,提出的超声相控阵检测技术能可靠地检测出聚乙烯电熔焊接头内的典型缺陷。Electrofusion welding is one of the main connection methods of polyethylene pipes.Due to the large acoustic attenuation coefficient of polyethylene materials,the internal wire of the electrofusion welded joints has a large interference to the detection.It is difficult to effectively detect various defects in polyethylene electrofusion joints using conventional ultrasonic testing methods.The typical internal defects of the polyethylene pipe electrofusion welded joint were fabricated,and the reliability test was carried out by ultrasonic phased array inspection technology.The results show that the proposed ultrasonic phased array detection technology can reliably detect the typical defects in the polyethylene electrofusion welded joints.

关 键 词：聚乙烯管道 电熔焊接 超声相控阵 

分 类 号：TG441.7[金属学及工艺—焊接]