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In-Situ Post-Weld Heat Treatment of Wet Welds
Offshore Technology Conference, 19921.0 Introduction There is a substantial interest in implementing wet welding for structural repairs of offshore installations. Some of the restrictions to its use are heat affected zone (HAZ) hardening and cracking, and the inability to produce wet welds that meet the bend test requirements of a surface weld ...
Peter Szelagowski +3 more
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Developments in Manual Wet SMA-Welding
Offshore Technology Conference, 1990ABSTRACT The increasing interest of the international diving industry in wet welding enforces research activities worldwide, to improve process and consumables for its offshore application, particulary on higher strength steels in greater water depths.
P. Szelagowski +4 more
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Recent developments in underwater wet welding
Science and Technology of Welding and Joining, 2001Developments in underwater wet welding processes over the past 25 years are reviewed. Shielded metal arc welding with rutile base coated electrodes is still by far the most common wet welding process in use. Research and development of wet welding electrodes has led to improvements in the control of hydrogen content, porosity, chemical composition ...
M. Rowe, S. Liu
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Offshore Technology Conference, 1982
Abstract The purpose of this paper is to discuss wet welding using fully anthropomorphic atmospheric diving suits and offer proof that wet welding operations are both feasible and practicable using ADS. Furthermore, future welding processes for deepwater applications will be shown to be well within ADS capabilities.
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Abstract The purpose of this paper is to discuss wet welding using fully anthropomorphic atmospheric diving suits and offer proof that wet welding operations are both feasible and practicable using ADS. Furthermore, future welding processes for deepwater applications will be shown to be well within ADS capabilities.
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Study of weld form and weld bead in bottom position at semi-automatic underwater wet welding
Blanking productions in mechanical engineering (press forging, foundry and other productions), 2021Some features of underwater mechanized and automatic wet welding with pulse feed of the electrode wire are considered. The conditions for experimental research to identify the parameters of forming of the weld metal at different parameters of pulse feed of the electrode wire are described.
V.A. Lebedev, D.N. Krazhanovsky
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Active Visual Sensor Based Weld Seam Tracking for Underwater Wet Welding
Advanced Materials Research, 2013Weld automation is the development trend of underwater welding, and underwater weld seam tracking is one of the key technologies in weld automation. This paper used active visual sensor to automatically monitor the weld seam in underwater wet weld process, and image processing algorithms were developed to automatically obtain the weld torch deviation ...
Bo Chen, Chuan Bao Jia, Ji Cai Feng
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Comparison of Solidification Behavior Between Underwater Wet Welding and Dry Welding
Volume 3: Materials Technology; Jan Vugts Symposium on Design Methodology of Offshore Structures; Jo Pinkster Symposium on Second Order Wave Drift Forces on Floating Structures; Johan Wichers Symposium on Mooring of Floating Structures in Waves, 2011The solidification substructure, both mode and size, has influence on the mechanical properties of weld joints. Controlling the solidification substructure by obtaining finer grains will generally result in enhancement of the weld joint quality and properties.
Faisal M. Al-Abbas +2 more
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Explaining Porosity Formation in Underwater Wet Welds
Volume 4: Materials Technology; Ocean Engineering, 2007Macroscopic porosity in underwater wet welds is one of the main defects that deteriorate the mechanical properties of the wet welded joints. It is well established that weld metal porosity is a function of pressure, thus water depth. However, the mechanism of porosity formation is not well understood, therefore the problem is not yet mitigated to ...
Faustino Pe´rez-Guerrero, Stephen Liu
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Underwater wet welding of duplex steel
Welding in the world, 2009Due to increased application of duplex steels in off-shore systems there is number of situations where undetwater wet welding is needed for repair and maintenance purposes. However, there is very few investigations found in the literature about this matter. Fast cooling, high diffusible hydrogen, porosity etc.
Kralj, Slobodan +2 more
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Diffusible hydrogen in underwater wet welding
Welding in the world, 2008The rapidly increasing development of the laying of high-strength steel underwater pipelines for the transportation of gas and oil requires adequate welding technology for maintenance and repair. As FCAW is suitable for automation and appropriate for application at greater depths it represents a welding process capable of replacing MMAW underwater wet ...
Kožuh, Zoran +2 more
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