The Experts below are selected from a list of 36 Experts worldwide ranked by ideXlab platform
Edward W. Reutzel - One of the best experts on this subject based on the ideXlab platform.
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Laser-GMA Hybrid Pipe Welding System
2007Co-Authors: Edward W. Reutzel, Michael J. Sullivan, L. A. Kern, Jay F. Tressler, Juan AvalosAbstract:Abstract : The combination of laser welding with conventional gas metal arc welding technology offers substantial increases in production rate of Joining Pipe through single-pass Joining compared to multi-pass techniques that are commonly used. The hybrid process has been examined and developed for this application, and the process has been qualified through the American Bureau of Shipping for a wide range of Pipe schedules. A system to realize this application has been specified, designed, built, and implemented in General Dynamics NASSCO Shipyard, and been subjected to a seven month evaluation on the production floor. Lessons learned have been documented to benefit future efforts. Fifteen actual production Pipe spools were manufactured using the system.
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Joining Pipe with the Hybrid Laser-GMAW Process: Weld Test Results and Cost Analysis
Welding Journal, 2006Co-Authors: Edward W. Reutzel, Michael J. Sullivan, Darlene A. MikesicAbstract:Abstract : It has been nearly a quarter of a century since researchers first conceived of combining a conventional welding arc with a laser beam in a hybrid process but only recently has lasergas metal arc (GMA) hybrid welding begun to be utilized in industrial applications. Now, hybrid laser-GMA welding is fast making the transition from laboratory to production, in industries as diverse as shipbuilding to automobile manufacturing. Recent work investigating the potential benefit of applying this technology to a shipyard Pipe shop suggests that significant cost savings may be realized. This paper presents ongoing efforts to study and evaluate hybrid welding, and to estimate potential cost savings that may be realized in a shipyard Pipe welding shop.
Adrian P. Gerlich - One of the best experts on this subject based on the ideXlab platform.
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application of cold wire gas metal arc welding for narrow gap welding ngw of high strength low alloy steel
Materials, 2019Co-Authors: R. A. Ribeiro, Eduardo Magalhães Braga, Paulo Dangelo Costa Assuncao, Emanuel Dos B F Santos, Ademir Angelo Castro Filho, Adrian P. GerlichAbstract:Narrow gap welding is a prevalent technique used to decrease the volume of molten metal and heat required to fill a joint. Consequently, deleterious effects such as distortion and residual stresses may be reduced. One of the fields where narrow groove welding is most employed is Pipeline welding where misalignment, productivity and mechanical properties are critical to a successful final assemblage of Pipes. This work reports the feasibility of Joining Pipe sections with 4 mm-wide narrow gaps machined from API X80 linePipe using cold wire gas metal arc welding. Joints were manufactured using the standard gas metal arc welding and the cold wire gas metal arc welding processes, where high speed imaging, and voltage and current monitoring were used to study the arc dynamic features. Standard metallographic procedures were used to study sidewall penetration, and the evolution of the heat affected zone during welding. It was found that cold wire injection stabilizes the arc wandering, decreasing sidewall penetration while almost doubling deposition. However, this also decreases penetration, and incomplete penetration was found in the cold wire specimens as a drawback. However, adjusting the groove geometry or changing the welding parameters would resolve this penetration issue.
M. Kocak - One of the best experts on this subject based on the ideXlab platform.
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Solutions for Joining Pipe steels using laser-GMA-hybrid welding processes
Physics Procedia, 2010Co-Authors: Stefan Grünenwald, Thomas Seefeld, Frank Vollertsen, M. KocakAbstract:AbstractThis paper focuses on high power fiber laser welding of steel material for the field of Pipe production. X65 and X70 steel plate material in thicknesses of 9.5 mm and 14 mm was welded with laser-GMA-hybrid welding processes with a maximum laser power of 8 kW. Two different filler wires and joint preparations were tested for their weldability. Relating to these welding procedures and thicknesses, characterisation of welded samples such as hardness, tensile testing and Charpy V-notch testing were carried out and the results will be reported in this paper
Michael J. Sullivan - One of the best experts on this subject based on the ideXlab platform.
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Laser-GMA Hybrid Pipe Welding System
2007Co-Authors: Edward W. Reutzel, Michael J. Sullivan, L. A. Kern, Jay F. Tressler, Juan AvalosAbstract:Abstract : The combination of laser welding with conventional gas metal arc welding technology offers substantial increases in production rate of Joining Pipe through single-pass Joining compared to multi-pass techniques that are commonly used. The hybrid process has been examined and developed for this application, and the process has been qualified through the American Bureau of Shipping for a wide range of Pipe schedules. A system to realize this application has been specified, designed, built, and implemented in General Dynamics NASSCO Shipyard, and been subjected to a seven month evaluation on the production floor. Lessons learned have been documented to benefit future efforts. Fifteen actual production Pipe spools were manufactured using the system.
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Joining Pipe with the Hybrid Laser-GMAW Process: Weld Test Results and Cost Analysis
Welding Journal, 2006Co-Authors: Edward W. Reutzel, Michael J. Sullivan, Darlene A. MikesicAbstract:Abstract : It has been nearly a quarter of a century since researchers first conceived of combining a conventional welding arc with a laser beam in a hybrid process but only recently has lasergas metal arc (GMA) hybrid welding begun to be utilized in industrial applications. Now, hybrid laser-GMA welding is fast making the transition from laboratory to production, in industries as diverse as shipbuilding to automobile manufacturing. Recent work investigating the potential benefit of applying this technology to a shipyard Pipe shop suggests that significant cost savings may be realized. This paper presents ongoing efforts to study and evaluate hybrid welding, and to estimate potential cost savings that may be realized in a shipyard Pipe welding shop.
Juan Avalos - One of the best experts on this subject based on the ideXlab platform.
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Laser-GMA Hybrid Pipe Welding System
2007Co-Authors: Edward W. Reutzel, Michael J. Sullivan, L. A. Kern, Jay F. Tressler, Juan AvalosAbstract:Abstract : The combination of laser welding with conventional gas metal arc welding technology offers substantial increases in production rate of Joining Pipe through single-pass Joining compared to multi-pass techniques that are commonly used. The hybrid process has been examined and developed for this application, and the process has been qualified through the American Bureau of Shipping for a wide range of Pipe schedules. A system to realize this application has been specified, designed, built, and implemented in General Dynamics NASSCO Shipyard, and been subjected to a seven month evaluation on the production floor. Lessons learned have been documented to benefit future efforts. Fifteen actual production Pipe spools were manufactured using the system.
