燃气聚乙烯管道热熔接头相控阵工艺研究

Study on Phased Array Technology of Hot Melt Joint of Gas Polyethylene Pipeline

相控阵超声检测聚乙烯管对接熔接接头相比传统脉冲反射式超声检测有较大优势。试从探头频率、角度扫查步距、扇扫角度、探头楔块、聚焦方式等方面开展相控阵超声检测工艺设计,并通过制作对比试块人工缺陷和自然缺陷的试样对工艺进行验证。

Phased array ultrasonic testing of butt welded joints of polyethylene pipes had great advantages over traditional pulse reflection ultrasonic testing. The process design of phased array ultrasonic detection was carried out from the aspects of probe frequency, Angle scanning step distance, fan scanning Angle, probe wedge and focusing mode, and the process was verified by making samples with artificial and natural defects of the test block.