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Effect of Filling Rate on Underwater Wet Welding Process and Weld Appearance. [PDF]

Materials (Basel), 2020
Real-time electric signal, matter transfer mode and welding pool behavior were obtained to investigate the effect of wires’ filling rate on arc stability and joints’ appearance during underwater wet flux-cored arc welding (FCAW). The electric signal results showed that arc stability first decreased and then increased rapidly because the raise of ...
Zhang X, Guo N, Xu C, Kan H, Tan Y, Chen H.   +5 more
europepmc   +4 more sources

Arc bubble edge detection method based on deep transfer learning in underwater wet welding [PDF]

Scientific Reports
The stability of arc bubble is a crucial indicator of underwater wet welding process. However, limited research exists on detecting arc bubble edges in such environments, and traditional algorithms often produce blurry and discontinuous results.
Bo Guo, Xu Li
doaj   +2 more sources

Advantages of the Application of the Temper Bead Welding Technique During Wet Welding. [PDF]

Materials (Basel), 2019
Thermo-mechanically rolled S460ML steel was chosen for welding in underwater wet welding conditions by covered electrodes. The main aim of this study was to check the weldability for fillet welds in a water environment by controlled thermal severity (CTS) tests and to check the influence of temper bead welding (TBW) on the weldability of the ...
Tomków J, Rogalski G, Fydrych D, Łabanowski J.   +3 more
europepmc   +4 more sources

Comparison of the Level and Mechanisms of Toxicity of Nanoparticles of Underwater Welding in Bioassay with Three Marine Microalgae [PDF]

Nanomaterials
In this work, the toxicity level of nano- and microparticles obtained by underwater welding was assessed. The toxicity of nano- and microparticles obtained by underwater welding was evaluated on three types of marine microalgae: Heterosigma akashiwo ...
Konstantin Yu. Kirichenko, Konstantin S. Pikula, Vladimir V. Chayka, Alexander V. Gridasov, Igor A. Vakhniuk, Vladislava N. Volkova, Anton V. Pogodaev, Sergei G. Parshin, Yulia S. Parshina, Yuri E. Kalinin, Aleksei S. Kholodov, Sergey M. Ugay, Tatyana Yu. Orlova, Kirill S. Golokhvast   +13 more
doaj   +2 more sources

Enhancing the Ultrasonic Welding of Wood Using 3D Printed Lignin Energy Directors [PDF]

Advanced Science
Ultrasonic wood welding is an ecofriendly method for rapidly joining wooden components in less than 2 s. However, this dynamic process results in low mechanical performance and poor durability under wet conditions.
Muhamad Amani, Kathrin Weiland, Mark Ablonczy, Natalia Sofia Guevara‐Sotelo, Ioannis Zygouris, Johan van Stuyvesant Meijen, Kunal Masania   +6 more
doaj   +2 more sources

Fatigue life of underwater wet welded low carbon steel SS400 [PDF]

Heliyon, 2020
Underwater welding is widely used for maintenance and repairs of underwater structures such as undersea pipes, offshore structures and nuclear power plants.
N. Muhayat, Y.A. Matien, H. Sukanto, Y.C.N. Saputro, Triyono   +4 more
doaj   +3 more sources

Welding tool oscillator for wet underwater welding apparatus

Технічні науки та технології, 2023
У статті розглянуто конструкцію механізму подачі порошкового дроту в автоматі для зварювання під водою мокрим способом з оригінальним пристроєм для коливання електродного дроту для забезпечення суцільного шва за наявності негарантованих по ширині зазорів в умовах просторового обмеження.
Volodymyr Lebedev, Serhii Loi
openaire   +3 more sources

Process Stability, Microstructure and Mechanical Properties of Underwater Submerged-Arc Welded Steel

Metals, 2021
In underwater wet welding, the unstable welding process caused by the generation and rupture of bubbles and the chilling effect of water on the welding area result in low quality of welded joints, which makes it difficult to meet the practical ...
Maofu Zhang, Yanfei Han, Chuanbao Jia, Shengfa Dong, Sergii Maksimov, Chuansong Wu   +5 more
doaj   +1 more source

The Efficiency of Thermite-Assisted Underwater Wet Flux-Cored Arc Welding Process: Electrical Dependence, Microstructural Changes, and Mechanical Properties

Metals, 2023
Alumino-thermic additions to the flux-cored wire can be utilized to enhance welding heat input, improve welding productivity, and minimize the dependency on power sources in the air environment.
Jibo Wang, Hongliang Li, Chengyu Hu, Zeyu Wang, Ke Han, Duo Liu, Jianfeng Wang, Qiang Zhu   +7 more
doaj   +1 more source

Effect of water flow and depth on fatigue crack growth rate of underwater wet welded low carbon steel SS400

Open Engineering, 2021
Underwater wet welding (UWW) is widely used in repair of offshore constructions and underwater pipelines by the shielded metal arc welding (SMAW) method. They are subjected the dynamic load due to sea water flow.
Surojo E., Anindito J., Paundra F., Prabowo A. R., Budiana E. P., Muhayat N., Badaruddin M., Triyono   +7 more
doaj   +1 more source