... specific quality and productivity requirements. Nevertheless, deeper understanding of the phenomena and effects responsible for their distinctive results is still lacking, which is needed for better application and customization for specific welding conditions. In this exploratory context, this work...

.... However, it exerts a bad influence on the monitoring system since the plasma accompanies strong emission from its ionized gas. To properly detect the Planck radiation from melted steel, two optical paths, infrared region for monitoring weld conditions and blue-light region for measuring the plasma...

... between specimens prepared with and without welding ends. welding condition hydraulic fracturing elastic-plastic fem stress distribution fracture toughness toughness test hui huang electroga welding welding residual stress toughness wide plate test toughness test specimen welding end...

... the analysis accuracy. As a result, it was found that the penetration shapes agree with each other. The heat input, welding speed, and torch distance were changed and the distribution of the BTR plastic strain increment was also compared to show the influence of the welding conditions. From the investigations...

... the parallel electrodes. welding weld joint weld bead widening heat source welding condition weld bead rad weld bead shape seam welding welding process molten pool speed welding welding speed phase difference bead appearance electrode reduction metals & mining parallelized...

... was used. In welding the crack-running plate and test plate, the welding conditions were adjusted to reduce the toughness of the weld metal in order to avoid crack arrest in the weld. 89 Norma-3 Steel (Test plate) 18.0 497 15.6 497 Heat input (kJ/cm) 6000 5000 Target Kca of test plate (N/mm3/2) DW-100E, 4...

... & logistics services container ship specification strength high strength wellbore design mechanical property wellbore integrity composition welding condition egw toughness reservoir characterization thickness direction heat input steel plate ctod value microstructure thick steel plate fcaw...

... with chamfering or grinding. Edge treatment makes the painting easily and enhances the fatigue performance besides. weld improvement residual stress fca fatigue crack weld toe steel plate specimen eh40-tm steel plate welding condition fcaw test specimen mean 2 welding process butt joint...

... weldability welding chemical composition heat input maximum hardness metals & mining seamless pipe welding condition material design hardness distribution pipe carbon content minimum hardness possible minimum hardness Material Design and Weldability of High Strength Seamless Pipe Hiroyuki...

... with different dimensions and welding conditions in a simple manner. INTRODUCTION The residual deformation induced by welding processes is a cause of repair work at the subsequent process. Therefore it is necessary to manage the assembly of welded structures by estimating accurately the distortion considering...

..., a stable tensile strength could be obtained under the wide range of welding conditions. Maximum joint efficiencies of C4641/S25C, C4641/SUS304, C6191/S25C and C6191/SUS304L were 73%, 61%, 78% and 77%, respectively. In C4641 to steels joints, there was no reaction layer at the weld interface...

..., FCAW with laser welding for this 2.25Cr-1Mo steel. hardness tensile test laser welding upstream oil & gas co 2 weld metal smaw specimen weldment welding condition welding residual stress mpa microstructure fcaw welding residual stress welding process 25cr-1mo steel...

... strength was obtained when the deformation heat input in the upset stage and the upset burn-off length exceeded 200 J/s and 4 mm, respectively. Weld condition at the weld interface and the width of softened area affected fatigue strength more than tensile strength. On the other hand, when the weld...

... ABSTRACT In shipbuilding, it is necessary to join large plates by butt-welding. It is impossible to avoid the deformation during welding. When the welding condition is not properly selected, end cracking may occur. Thus, it is very important to predict the welding deformation and the formation...

... ABSTRACT This paper deals with similarity law parameters, which decide residual stress distributions and welding deformations, derived from both welding conditions and plate sizes. In order to prove similarity law parameters, experiments of residual stresses, deformations and inherent strains...

... ABSTRACT In automatic butt welding of relatively thin plates, it is important to control welding conditions in order to obtain a sound full penetration weld. Recently, it was reported that there is an intimate relationship between the oscillation of the molten pool and penetration...

.... If the welding conditions are selected appropriately, sound continuous nugget can be formed. Since, high welding speed is achieved once the welding conditions are correctly set, it is widely employed for the welding of not only mild steel but also aluminum alloys and stainless steels. artificial...

... ABSTRACT Usefulness of the statistical analysis for judging optimization of the friction welding condition was investigated by using 2017 aluminum similar alloy, where many samples under fixed welding conditions were friction welded and analyzed statistically. The results are as follows. (1...

..., the upset stage and the total stage. The heat input component that is most important in producing sound joints was experimentally investigated with tensile testing of welded joints for the purpose of establishing guidelines for welding conditions. It was found that the deformation heat input in the upset...

... ABSTRACT In order to obtain sound welded joints in the welding of horizontal fixed pipes, it is important to control the back bead width in the first pass. However, it is difficult to obtain optimum back bead width, because the proper welding conditions change with welding position...