大型厚壁压力容器中超声TOFD检测技术的应用  

Application of ultrasonic TOFD testing technology in large thick walled pressure vessel

作　　者：谷莉[1] 刘嘉君 范实 岳桂杰[1] 

机构地区：[1]兰州城市学院培黎校区培黎工程技术学院,甘肃兰州730070 [2]兰石集团测试中心,甘肃兰州730050

出　　处：《自动化与仪器仪表》2015年第12期131-,134,共2页Automation & Instrumentation

摘　　要：大厚度压力容器焊缝中经常会存在各种焊接缺陷,实施射线检测非常困难,特别是对现场超大厚度的容器,射线检测已成为约束其制造的瓶颈,超声衍射时差法为解决此类问题提供了一种方案。TOFD技术已解决了大厚度压力容器射线检测困难的难题,因此TOFD检测技术的应用对国内大型厚壁压力容器的制造及发展具有重要意义,且具有必要性和紧迫性。There usually exist various welding defects in the welded joints of large thick-walled pressure containers and it is difficult to perform radiographic detection, especially for on-site detection of the large thick-walled containers. Thus, radiographic detection technique has, in a way, hindered its manufacture. The Time of Flight Diffraction Technique provides a solution to this problem, getting rid of the difficulty of radiographic detection for the pressure container of large thickness. Therefore, it is of great necessity and importance to apply TOGD technique to the manufacture of the large thick-walled pressure containers.

关 键 词：TOFD检测技术 探头 衍射波 应用实例 

分 类 号：TG441.7[金属学及工艺—焊接] TP274.53[自动化与计算机技术—检测技术与自动化装置]