To meet challenges of GMAW horizontal welding in deep water pipeline laying, such as molten pool falling, narrow gap groove and without backing support, a 3D model of pipe is established and meshed, temperature field material database of API X65 is generated by material software,the Goldak double ellipsoid heat source model is checked by matching the simulated temperature field cloud chart with the actual weld cross section, and temperature field distributions in pipe welding simulated by SYSWELD software are consistent with the actual welding process. The welding temperature field test system is established, and the thermal cycle curve of API X65 pipeline steel plate welding is measured by the thermocouple embedded in the back hole method. Tested curve has the same temperature rise and fall trend as the SYSWELD simulated curve, and temperature of upper plate node is significantly lower than that of lower plate node. The average thermal cycle curve of weld cross section is used as the heat source to simulate the multi pass welding, and the test is carried out. The results show that the welding deformation of multi pass welding is determined by the welding process parameters and residual stress release.
ZHOU Canfeng
,
CHEN Zhi
,
JIAO Xiangdong
,
LUO Yu
,
GAO Hui
,
ZHOU Zhenzhen
. Study on temperature field of GMAW horizontal welding for deep water laying of API X65 pipe[J]. Transactions of The China Welding Institution, 2020
, 41(9)
: 60
-68
.
DOI: 10.12073/j.hjxb.20200310001
[1] Gong Shunfeng, Zhang Tao, Wang Xipeng, et al. Numerical simulation on dynamic behaviour of deepwater J-lay systems[J]. Ocean Engineering, 2020, 196: 106771.
[2] Kwon Y J, Nam B W, Kim N W, et al. A model test on a rigid pipe installation using J-Lay method[C]//The 28th International Ocean and Polar Engineering Conference. Sapporo, Japan, 2018, 255 − 261.
[3] Mark J Kaiser. Offshore pipeline construction cost in the U. S. Gulf of Mexico[J]. Marine Policy, 2017, 82: 147 - 166.
[4] Zhong Wenjun, He Ning, Ni Wenchi. Structural analysis of J-lay tower on deepwater semi-submersible lifting and pipe laying vessel[C]//ISOPE International Journal of Offshore and Polar Engineering Conference. Rhode Island, Greecce, 2016, 676 − 683.
[5] Lirola F, Pionetti F R, Agoumi J, et al. Development and qualification of an innovative and cost efficient heat traced flowline optimized for J-Laying[C]//Offshore Technology Conference. Houston, Texas, USA, 2016, 255 − 261.
[6] Senthila B, Selvam Panner R. Dynamic analysis of a J-lay pipeline[J]. Procedia Engineering, 2015, 116: 730 - 737.
[7] Etienne Girault, François Lirola, Erwan Briand, et al. Lessons learned from the qualification program and J-laying campaign of 12-inch steel Catenary risers for the P55 deepwater project[C]//Offshore Technology Conference. Houston, Texas, USA, 2015, 1 - 24.
[8] Heerema E P. Recent achievements and present trends in deepwater pipe-lay systems[C]//Offshore Technology Conference. Houston, Texas, USA, 2005, 1 − 4.
[9] Killeen J P, Dyson K C , Reeves K D, et al. Large diameter SCR delivery challenges[C]//Offshore Technology Conference. Houston, Texas, USA, 2005, 1 − 13.
[10] Van der Graaf J, Wolbers D, Boerkamp P. Field experience with the construction of large diameter SCR in deep water[C]//Offshore Technology Conference. Houston, Texas, USA, 2005.
[11] Dick Wolbers, Rob Hovinga. Installation of deepwater pipelines with sled assemblies using the new J-Lay system of the DCV balder[C]//Offshore Technology Conference. Houston, Texas, USA, 2003, 1 − 12.
[12] Mazar Atabaki M, Yazdian N, Ma J, et al. High power laser welding of thick steel plates in a horizontal butt joint configuration[J]. Optics & Laser Technology, 2016, 83: 1 - 12.
[13] Guo Wei, Liu Qiang, Francis John A, et al. Comparison of laser welds in thick section S700 high-strength steel manufactured in flat (1G) and horizontal (2G) positions[J]. CIRP Annals - Manufacturing Technology, 2015, 64: 197 - 200.
[14] Vishvesh J B. Effect of residual magnetism on sidewall fusion in narrow gap gas metal arc welding[J]. Welding and Cutting, 2008, 7(5): 280 - 288.
[15] Kang Y H, Na S J. Characteristics of welding and arc signal in narrow groove gas metal arc welding using electromagnetic arc oscillation[J]. Welding Research, 2003, 5: 93 - 99.
[16] Goldak A, Bibby M, Moore J, et al. Computer modeling of heat flow in welding heat source[J]. Metallurgical and materials transactions, 1986, 17(3): 587 - 600.
[17] Leblond J B, Devaux J. A new kinetic model for aniso-thermal metallurgical transformations in steels including effect of austenite grain size[J]. Acta metallurgica, 1984, 32(1): 137 - 146.
[18] Zhou Canfeng, Jiao Xiangdong, Chen Jiaqing, et al. Design of welding system applied in deepwater sub-sea pipeline laying[J]. Welding & Joining, 2010(7): 16-20.
[19] Macdonald K A, Maddox S J. New guidance for fatigue design of pipeline girth welds[J]. Engineering Failure Analysis, 2003, 10(2): 177 - 197.
[20] David Walters, Ricky Thethi. A step change application of threaded and coupled connections[J]. Offshore Pipeline Technology, 2002: 1 - 15.
