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| Discussion on phased array ultrasonic automatic testing method for the weld of submerged arc welded pipe |
| HUANG Lei1,2, NIE Fei3, LI Rujiang4, SUN Shaoqing4, CAO Huayong5, LI Liang1,2 |
1. Tubular Goods Research Institute of CNPC, Xi′an 710077, China;
2. Beijing Longshine Oil Tubular Technology Co., Ltd., Beijing 100101,China;
3. West-east Gas Pipline Company of COGPNC, Shanghai 200120, China;
4. North China Petroleum Steel Pipe Co., Ltd., Qingxian 062658, China;
5. Nanjing Julong Steel Pipe Co., Ltd., Nanjing 210061,China |
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Abstract In order to solve the problem of detection defects of the weld of submerged arc welded pipe, the characteristics of weld defects of submerged arc welded pipe were studied and discussed. The causes of defects formation and the characteristics of various nondestructive testing methods were analyzed. Based on automatic phased array ultrasonic testing method, the section model for the weld of submerged arc welded pipe was established by computer simulation software, and the full coverage detection of acoustic beam was simulated. The simulated test block was designed, and the mode of virtual probe arrangement was used to detect various defects (longitudinal, transverse and heat affected zone). The results showed that the automatic phased array ultrasonic testing technology was stable and reliable for the weld defect detection of submerged arc welded pipe. It could effectively guide the design of the automatic phased array ultrasonic testing process for the weld of submerged arc welded pipe. The coverage state of the ultrasonic beam in the weld could be directly displayed, which overcame the blindness of the parameter setting of phased array ultrasonic testing, and provided reference for the automatic phased array ultrasonic testing of the weld of submerged arc welded pipe.
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Received: 04 May 2023
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2023, Vol. 41 
