介绍最新国际标准有关承压设备对接接头对接焊缝和T型接头组合焊缝采用相控阵扇形扫查或电子扫描进行超声检测的重要要求。主要内容包括相控阵仪器、探头和校验试块要求,仪器调试方法(时基线性、探测范围和灵敏度),聚焦律的设置和校验,检测程序,薄板、中板和厚板对接焊缝及T型接头的探测布置和声线示踪,图像显示评价。意在为国内承压设备推广应用标准化相控阵超声检测技术提供有用借鉴。 Describes the latest international standards on pressure-bearing butt-welded joints and fittings T-joint weld seam using phased array fan scanning or electronic scanning of the important requirements of ultrasonic testing. The main contents include the requirements of phased array instruments, probes and calibration test blocks, instrument commissioning methods (time base linearity, detection range and sensitivity), focusing law setting and verification, testing procedures, sheet, plate and plate butt welding Seam and T-joint detection of the soundtrack layout and tracking, image display evaluation. It is intended to provide a useful reference for the popularization and application of standardized phased array ultrasonic testing technology for domestic pressure equipment.