Yan-hua SUN（孙燕华）, Jian-bo WU(伍剑波), Yi-hua KANG（康宜华）
(State Key Lab of Digital Manufacturing Equipment & Technology, Huazhong University of Science and Technology, Wuhan 430074, China)
Abstract-Steel pipes are categorized into seamless pipes and welded pipes, and particularly the welded pipes’ NDT (Non-Destructive Testing) has been a challenging problem. In the case, on the basis of the presentation of welded pipes, the analysis of its relevant testing key is carried out. Afterwards, the MFL(Magnetic Flux Leakage) methods for longitudinally welded line-pipes and for helically welded pipes are respectively proposed. Meanwhile, their relevant experiments are conducted, and finally the two technologies for the two types of welded pipes are verified well.
Key words-NDT (Non-Destructive Testing); MFL (Magnetic Flux Leakage); welded pipe; longitudinally welded pipe; spirally welded pipe
Manuscript Number: 1674-8042(2011)04-0330-03
doi: 10.3969/j.issn.1674-8042.2011.04.006
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