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• W2897247721 abstract "Laser welding has the potential of offering both technical and economical advantages in many applications in the shipbuilding industry. A limiting factor is currently the power level available with commercial lasers, since steel plates above 5 mm in thickness are used in almost every shipbuilding application. In addition, the high hardness of the welds produced using laser welding is a disadvantage when compared with the requirements of existing classification society standards. It has been reported that by using a hybrid welding method, in which a laser beam and a GMAW arc are combined, it is possible to weld thicker sections, because penetration is increased. Hardness values are correspondingly lower than with the laser process because of the increased energy input.Results of a study of hybrid high power Nd:YAG laser and GMA welding are reported. All plates were welded in a butt joint configuration. When laser and GMAW were combined in a single process, I -grooves were used. The air gaps between the welded plates were varied. Some tests were made using a partially-grooved V joint. In these cases, the root faces were welded by using Nd:YAG laser, and the upper part of the joint was welded by GMAW. It was seen that it is possible to produce defect-free welds using these processes. Macrosections of the welds, hardness values and parameters are presented and discussed.Laser welding has the potential of offering both technical and economical advantages in many applications in the shipbuilding industry. A limiting factor is currently the power level available with commercial lasers, since steel plates above 5 mm in thickness are used in almost every shipbuilding application. In addition, the high hardness of the welds produced using laser welding is a disadvantage when compared with the requirements of existing classification society standards. It has been reported that by using a hybrid welding method, in which a laser beam and a GMAW arc are combined, it is possible to weld thicker sections, because penetration is increased. Hardness values are correspondingly lower than with the laser process because of the increased energy input.Results of a study of hybrid high power Nd:YAG laser and GMA welding are reported. All plates were welded in a butt joint configuration. When laser and GMAW were combined in a single process, I -grooves were used. The air gaps between the wel..." @default.
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• W2897247721 date "1999-01-01" @default.
• W2897247721 modified "2023-09-28" @default.
• W2897247721 title "Welding of ship structural steel a 36 using Nd:YAG laser and GMAW" @default.
• W2897247721 doi "https://doi.org/10.2351/1.5059226" @default.
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