Results 31 to 40 of about 536 (159)
Numerical simulation on strain capacity of welding joint of X80 pipeline with root welding crack
You-qi chuyun, 2022 Automatic welding technology is widely used in the field welding of large-diameter and high-grade steel pipelines in China. Welding defects such as misalignment and cracks caused by various factors have seriously affected the deformation and bearing ...
Feining YI +6 more
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Simulation analysis of X80 pipeline steel welding
Metalurgija, 2023 In order to improve the quality of welded joints and increase the service life of pipelines, ABAQUS finite element software was used to simulate the temperature field of 18,4 mm thick X80 pipeline steel in multi-layer and multi pass welding. The peak temperature of different passes was compared, and the change trend of temperature field in the welding ...
Li, M. M. +4 more
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Study on Repairing and Reinforcing Effect of Steel Epoxy Sleeve on Girth Weld Defects
Shiyou jixie, 2022 In order to study the repairing and reinforcing effect of steel epoxy sleeve on girth weld defects of X80 pipeline,ANSYS is applied to establish the nonlinear finite element models of X80 pipeline with girth weld defects and pipeline reinforced by steel ...
Yu Dongliang +4 more
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Limit width analysis of X80 corroded pipeline pass through landslide
Zhongguo dizhi zaihai yu fangzhi xuebao, 2022 In view of the safety early warning problems involved in X80 corroded pipeline crossing landslide, it is proposed to take the limit width as the discrimination factor of pipeline safety state, establish a finite element model according to the specific ...
Peng ZHANG +3 more
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A Comparison of Cathodic Protection Parameters with High- Strength Pipeline Steels in Soil Solution
International Journal of Electrochemical Science, 2014 Cathodic protection is usually used to control the corrosion in service pipeline. The optimum cathodic protection potential (OCPP) becomes a vital part in order to get the best protective effect in the whole research of cathodic protection.
Xinhua Wang +3 more
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You-qi chuyun, 2020 To address the fracture control problem of X80 unequal-diameter tee used in China-Russia Eastern Gas Pipeline under low temperature environment (－45 ℃), the finite element model for X80 unequal-diameter tee with defects was built taking into ...
Zeguang YOU +3 more
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Tempering microstructure and mechanical properties of pipeline steel X80
Transactions of Nonferrous Metals Society of China, 2009 The tempering microstructure and mechanical properties of X80 steel used for heating-bent pipe were analyzed. The results show that the microstructure of X80 steel tempered at 550 ℃ and 600 ℃ is bainitic ferrite (BF)+granular bainite (GB), and partial ferrite laths in BF merge and broaden.
Jing NIU +5 more
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Reliability analysis of pipeline in fault area based on BP-MC method
You-qi chuyun, 2020 Strike-slip fault is a common geologic hazard for buried pipelines. The fault-induced ground displacement often leads to excessive deformation and failure of pipelines, so it is of great significance to carry out reliability analysis of pipelines in ...
Qian ZHENG, Hong ZHANG, Xiaoben LIU
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Influence of Hydrogen Environment on Mechanical Properties of High-Grade Pipeline Steel
Shiyou jixie, 2023 Under the context of carbon peaking and carbon neutrality targets, hydrogen blending in natural gas pipelines will become the primary means of large-scale, long-distance hydrogen transportation in the future.However, the introduction of hydrogen will ...
Ai Hongni +6 more
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Research of ultra-fine bainite X80 pipeline plate for gas compressor station
MATEC Web of Conferences, 2018 This paper reports on the research of low temperature (-51°C) X80 pipeline plate used for gas compressor station. In order to satisfy the performance requirements of low temperature X80 pipeline plate, an optimized rolling and cooling process was ...
Li Shaopo, Ding Wenhua, Zhang Hai
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