Relevant bibliographies by topics / Gas welding

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Gas welding'

Author: Grafiati
Published: 4 June 2021
Last updated: 11 February 2022

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Journal articles on the topic "Gas welding"

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Alrwyeh, Sameer Mosaed. "Snapping During Gas Welding." International Journal of Engineering Research and Applications 07, no. 03 (March 2017): 14–18. http://dx.doi.org/10.9790/9622-0703051418.

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S, Subramanian, and Senthil kumar T. "Effect of Shielding gas mixture on Welding of Stainless Welding in Gas metal Arc Welding process." International Journal of Advanced Multidisciplinary Research 4, no. 6 (June 30, 2017): 53–63. http://dx.doi.org/10.22192/ijamr.2017.04.06.007.

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Yan, Jiu Chun, Yi Nan Li, Wei Wei Zhao, and Shi Qin Yang. "Heating Characteristics of Gas Tungsten Arc Welding of Copper Thick Plates with Shielding Gas of Argon, Helium or Nitrogen." Key Engineering Materials 353-358 (September 2007): 2096–99. http://dx.doi.org/10.4028/www.scientific.net/kem.353-358.2096.

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The welding temperature patterns of gas tungsten arc welding for copper thick plates during Ar, He or N2 shielded arc welding were simulated, and the size of weld pools and heat-affected zones have been compared. It was predicted that the heat-affected zone in the welded joints during Ar arc welding is the widest and that during N2 arc welding is the narrowest, while the size of weld pools using Ar (preheating at 400°C), He and N2 (without preheating) shielding arc welding is very similar. Among the three kinds of gases shielded arc welding, the temperature gradient of welded joints during Ar arc welding is the least and that during N2 arc welding is the greatest. The temperature rise velocity at the arc center during N2 arc welding is the highest, and those at the zone close to the weld pool of welded joints during He arc and N2 arc welding are a few higher than that during Ar arc welding.
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Wang, Bao Sen, Shuang Chun Zhu, and Xia Ning Ye. "Welding Technology of Ultra-Low Carbon and Nitrogen Ferrite Stainless Steel." Materials Science Forum 654-656 (June 2010): 354–57. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.354.

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Weldability of ultra low carbon and nitrogen, low chromium ferrite stainless steel is analysed by using Thermol-cal software and welding metallurgy. Eembrittlement of welding joint is the failure reason during application of ultra low carbon and nitrogen 12% chromium FSS. Comparing welding joint performance of different welding process, Gas Metal Arc Weldinng with high toughness welding material and proper welding heat input is economical and feasible welding process. Controlling growth of ferrite grain is the key to improve toughness of the heat affected zone (HAZ). Presence of titanium carbides or nitrides and the amount of martensite located along ferrite grain intergranular boundaties are very important for toughness of HAZ in low chromium FSS. It was found that the best size of Ti(C/N) grain is 2-5μm and content of martensite is 40%.
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Wang, Zhi-ling. "Horizontal welding quality control of the CO2 gas shielded welding." MATEC Web of Conferences 207 (2018): 04006. http://dx.doi.org/10.1051/matecconf/201820704006.

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In the process of horizontal butt welding of CO2 gas shielded welding, the molten metal will squat under the effect of its own weight. Therefore, the upper part of the weld seam is very easy to produce undercuts, and the lower part is prone to defects such as welding and unwelding. If the problem is serious, it will cause welding. Seam cannot pass the weld quality test. This article is based on the welding skill training topic “CO2 gas shielded welding transverse welding”. Through trial and error of preparations before welding, selection of welding process parameters, and welding operation process, Weld seam quality is well controlled, weld seams are beautifully formed, and relevant experience is promoted in practical training.
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Sathishkumar, M., and M. Manikandan. "Influence of pulsed current arc welding to preclude the topological phases in the aerospace grade Alloy X." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 234, no. 4 (February 26, 2020): 637–53. http://dx.doi.org/10.1177/1464420720907993.

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Alloy X is prone to liquation and solidification cracks in the weldments, because of the development of topologically close-packed precipitates such as σ, P, M6C, and M23C6 carbides during arc welding methods. The present work examines the possibility of alleviating the segregation of Cr and Mo content to eliminate the development of topologically close-packed phases using a conventional arc welding technique. The welding of Alloy X has been achieved with ERNiCrMo-2 filler material by gas tungsten arc welding and pulsed current gas tungsten arc welding technique. The optical microscope shows the refined microstructure in pulsed current gas tungsten arc with respect to gas tungsten arc welding. The Mo-rich segregation was identified in gas tungsten arc weldment, and the same was absent in pulsed current gas tungsten arc. These segregations of Mo-rich content encourage the development of M3C and M6C secondary precipitates in gas tungsten arc welding. Pulsed current gas tungsten arc welding shows the existence of NiCrCoMo precipitate. The present work confirmed the absence of P, σ, and M23C6 in both the weldments of Alloy X. The ultimate tensile strength, microhardness, and impact strength of pulsed current gas tungsten arc welding are increased by 3.39, 9.17, and 21.62%, respectively, with gas tungsten arc welding. The observed Mo-rich M3C and M6C secondary phases in the gas tungsten arc welding affect the tensile strength of the weldments.
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Xu, Yanling, Na Lv, Gu Fang, Shaofeng Du, Wenjun Zhao, Zhen Ye, and Shanben Chen. "Welding seam tracking in robotic gas metal arc welding." Journal of Materials Processing Technology 248 (October 2017): 18–30. http://dx.doi.org/10.1016/j.jmatprotec.2017.04.025.

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Nakamura, Terumi, and Kazuo Hiraoka. "Improvement of Welding Stability and Toughness Using Gas Metal Arc Welding in Pure Ar Shielding Gas." International Journal of Automation Technology 7, no. 1 (January 5, 2013): 109–13. http://dx.doi.org/10.20965/ijat.2013.p0109.

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We develop a coaxial multilayer solid wire to use in Gas Metal Arc welding with pure Ar shielding gas (Ar-GMA welding). The oxygen concentration in weld metal that degrades the welded parts is reduced using by Ar-GMA welding. We produce stable welds with pure Ar shielding gas and obtain a high-quality joint with improved toughness.
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Manorathna, Prasad, Sundar Marimuthu, Laura Justham, and Michael Jackson. "Human behaviour capturing in manual tungsten inert gas welding for intelligent automation." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 231, no. 9 (November 30, 2015): 1619–27. http://dx.doi.org/10.1177/0954405415604313.

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Tungsten inert gas welding is extensively used in aerospace applications due to its unique ability to produce higher quality welds compared to other conventional arc welding processes. However, most tungsten inert gas welding is performed manually, and it has not achieved the required level of automation. This is mostly attributed to the lack of process knowledge and adaptability to complexities, such as mismatches due to part fit-up and thermal deformations associated with the tungsten inert gas welding process. This article presents a novel study on quantifying manual tungsten inert gas welding, which will ultimately help intelligent automation of tungsten inert gas welding. Through tungsten inert gas welding experimentation, the study identifies the key process variables, critical tasks and strategies adapted by manual welders. Controllability of welding process parameters and human actions in challenging welding situations were studied both qualitatively and quantitatively. Results show that welders with better process awareness can successfully adapt to variations in the geometry and the tungsten inert gas welding process variables. Critical decisions taken to achieve such adaptations are mostly based on visual observation of the weld pool. Results also reveal that skilled welders prioritise a small number of process parameters to simplify the dynamic nature of tungsten inert gas welding process so that part variation can be accommodated.
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Chinakhov, Dmitry A. "Dependence of Silicon and Manganese Content in the Weld Metal on the Welding Current and Method of Gas Shielding." Applied Mechanics and Materials 756 (April 2015): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.756.92.

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The influence of the welding current and method of gas shielding in MAG welding on the content of silicon and manganese is considered. Results of study of the welded specimens of steels 45 and 30HGSA when applying welding wire of different formulas and different types of gas shielding (traditional shielding and two-jet shielding) are given. It is established that in MAG welding the value of the welding current and the speed of the gas flow from the welding nozzle have a considerable impact on the chemical composition of the weld metal. The consumable electrode welding under double-jet gas shielding provides the directed gas-dynamics in the welding area and enables controlling the electrode metal transfer and the chemical composition of a weld.
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Dissertations / Theses on the topic "Gas welding"

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Segar, Richard William Moore. "Activated tungsten inert gas welding." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621314.

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Erener, Yavuz. "Analysis Of Welding Parameters In Gas Metal Arc Welding By A Welding Robot." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607766/index.pdf.

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ANALYSIS OF WELDING PARAMETERS IN GAS METAL ARC WELDING BY A WELDING ROBOT Erener, Yavuz M.S., Department of Mechanical Engineering Supervisor : Prof. Dr. R. Tuna Balkan Co-Supervisor : Prof. Dr. M. A. Sahir Arikan September 2006, 130 pages In Robotic Gas Metal Arc Welding process, the welding parameters controlled by the welder (travel speed of the welding torch, wire feed speed, current, voltage, wire diameter, etc.) should be considered to obtain a desired welding quality. To design an appropriate welding model for the used equipment, the effects of each parameter should be studied by carrying out an adequate number of experiments. The welding process is described by analyzing the experimental data to define the relationships between the welding parameters and process variables. Various regressional models can be suggested to establish the analytical relationships. In this study, the relationship between bead geometry and voltage, current, travel speed and wire feed speed is established by using a specific computer program developed for this purpose.
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Goodarzi, Massoud. "Mathematical modelling of gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) processes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27936.pdf.

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Liratzis, Theocharis. "Tandem gas metal arc pipeline welding." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/5686.

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Energy consumption has grown by 2% per year worldwide over the past ten years. In 2005 worldwide 900,000 barrels of oil and 7.6 billion cubic metre of natural gas were produced daily. The exploitation of fields to meet the increased demands in energy requires the presence of adequate infrastructures. High strength pipeline steels(X100) have been developed to operate at higher pressures allowing a greater volume of fuel to be transported. Additional advantages arising from the reduction in wall thickness contribute to reduction in construction costs and steel volume.
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Talkington, John Eric. "Variable polarity gas metal arc welding." Connect to resource, 1998. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1130352747.

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Thesis (M.S.)--Ohio State University, 1998.
Advisor: Richard W. Richardson, Welding Engineering Program. Includes bibliographical references (leaves 111-113). Available online via OhioLINK's ETD Center
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Kim, Yong-Seog. "Metal transfer in gas metal arc welding." Thesis, Massachusetts Institute of Technology, 1989. http://hdl.handle.net/1721.1/14199.

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Modenesi, P. J. "Statistical modelling of the narrow gap gas metal arc welding process." Thesis, Cranfield University, 1990. http://dspace.lib.cranfield.ac.uk/handle/1826/831.

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The J-laying technique for the construction of offshore pipelines requires a fast welding process that can produce sound welds in the horizontal-vertical position. The suitability of narrow gap gas metal arc welding (NG-GMA W) process for this application was previously demonstrated. The present programme studied the influence of process parameters on the fusion characteristics of NG-GMA welding in a range of different shielding gas compositions and welding positions. Statistical techniques were employed for both designing the experimental programme and to process the data generated. A partial factorial design scheme was used to investigate the influence of input variables and their interaction in determining weld bead shape. Modelling equations were developed by multiple linear regression to represent different characteristics of the weld bead. Transformation of the response variable based on the Cox-Box method was commonly used to simplify the model format. Modelling results were analysed by graphical techniques including surface plots and a multiplot approach was developed in order to graphically assess the influence of up to four input variables on the bead shape. Conditions for acceptable bead formation were determined and the process sensitivity to minor changes in input parameters assessed. Asymmetrical base metal fusion in horizontalvertical welding is discussed and techniques to improve fusion presented. At the same time, the interaction between the power supply output characteristic and the bead geometry was studied for narrow gap joints and the effect of shielding gas composition on both process stability and fusion of the base metal was assessed. An arc instability mode that is strongly influenced by arc length, power supply characteristic and shielding gas composition was demonstrated and its properties investigated. An optimized shielding gas composition for narrow gap process was suggested.
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Jones, Lawrence Anthony. "Dynamic electrode forces in gas metal arc welding." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11287.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
Includes bibliographical references (p. 306-313).
by Lawrence Anthony Jones.
Ph.D.
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Sen, Debamoy. "Coupled Field Modeling of Gas Tungsten Arc Welding." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/38820.

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Welding is used extensively in aerospace, automotive, chemical, manufacturing, electronic and power-generation industries. Thermally-induced residual stresses due to welding can significantly impair the performance and reliability of welded structures. Numerical simulation of weld pool dynamics is important as experimental measurements of velocities and temperature profiles are difficult due to the small size of the weld pool and the presence of the arc. From a structural integrity perspective of welded structures, it is necessary to have an accurate spatial and temporal thermal distribution in the welded structure before stress analysis is performed. Existing research on weld pool dynamics simulation has ignored the effect of fluid flow in the weld pool on the temperature field of the welded joint. Previous research has established that the weld pool depth/width (D/W) ratio and Heat Affected Zone (HAZ) are significantly altered by the weld pool dynamics. Hence, for a more accurate estimation of the thermally-induced stresses it is desired to incorporate the weld pool dynamics into the analysis. Moreover, the effects of microstructure evolution in the HAZ on the mechanical behavior of the structure need to be included in the analysis for better mechanical response prediction. In this study, a three-dimensional model for the thermo-mechanical analysis of Gas Tungsten Arc (GTA) welding of thin stainless steel butt-joint plates has been developed. The model incorporates the effects of thermal energy redistribution through weld pool dynamics into the structural behavior calculations. Through material modeling the effects of microstructure change/phase transformation are indirectly included in the model. The developed weld pool dynamics model includes the effects of current, arc length, and electrode angle on the heat flux and current density distributions. All the major weld pool driving forces are included, namely surface tension gradient, plasma drag force, electromagnetic force, and buoyancy. The weld D/W predictions are validated with experimental results. They agree well. The effects of welding parameters (like welding speed, current, arc length, etc.) on the weld D/W ratio are documented. The workpiece deformation and stress distributions are also highlighted. The transverse and longitudinal residual stress distribution plots across the weld bead and their variations with welding speed and current are also provided. The mathematical framework developed here serves as a robust tool for better prediction of weld D/W ratio and thermally-induced stress evolution and distribution in a welded structure by coupling the different fields in a welding process.
Ph. D.
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Campbell, Stuart William. "Shielding gas parameter optimisation in arc welding processes." Thesis, University of Strathclyde, 2015. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25988.

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This thesis is focussed on shielding gas optimisation in gas shielded arc welding processes, and has been conducted along two themes; deriving conditions in which the shielding gas flow rate can be safely reduced, and through the highly novel process of alternating shielding gases. The correct shielding gas flow rate is essential for providing adequate protection to the weld metal during the heating, liquid and solidification stages. Hence, there is an optimum shielding gas flow rate, but this is difficult to define and is often decided on the basis of preference or experience. A multi-disciplined, systematic study has been conducted, which has shown that there is considerable scope to reduce the shielding gas flow rate. Experimental trials have shown that the shielding gas flow rate can be reduced, in a draft-free environment, to 6 l/min, with no degradation in weld quality for the worst draft conditions measured in a typical shipyard fabrication hall, at 10 l/min. This study has resulted in shielding gas flow controllers, preset at 12 l/min, being installed in a large shipyard environment, removing the welding operatives ability to increase the shielding gas flow rate. The application of alternating shielding gases offers clear manufacturing cost reduction benefits which arise from measurable increases in productivity, improved distortion control and re-work reduction, and overall improvements to the mechanical properties of the weld. Arc pressure measurements, and the subsequent derivation of forces acting on the liquid weld metal, have indicated that flow vectors for helium are opposite in direction to that produced by argon, creating a dynamic action within the weld pool. Schlieren visualisation has shown that there is a greater degree of helium entrainment in the primary jet due to a constriction of its flow in the secondary jet, influencing the arc's behaviour and inferring more of the associated benefits.
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Books on the topic "Gas welding"

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A, Bowditch Mark, and Baird Ronald J, eds. Oxyfuel gas welding. 7th ed. Tinley Park, IL: Goodheart-Willcox Co., 2012.

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A, Bowditch Mark, and Baird Ronald J, eds. Oxyfuel gas welding. Tinley Park, IL: Goodheart-Wilcox, 2004.

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Bowditch, Kevin E. Oxyfuel gas welding. Tinley Park, Ill: Goodheart-Willcox, 1999.

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International Pipe Trades Joint Training Committee. Gas tungsten arc welding. Washington, D.C: International Pipe Trades Joint Training Committee, 2000.

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Rybakov, V. Arc and gas welding. Moscow: Mir, 1986.

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Gerken, John M. Gas tungsten arc welding. [Cleveland, OH: James F. Lincoln Arc Welding Foundation, 1991.

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A, Prosser Mark, ed. Gas tungsten arc welding handbook. 6th ed. Tinley Park, IL: Goodheart-Willcox Company, 2013.

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Gas metal arc welding handbook. South Holland, Ill: Goodheart-Willcox, 1996.

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Board, Engineering Industry Training. Gas shielded arc welding practices. Watford: E.I.T.B, 1987.

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Minnick, William H. Gas tungsten arc welding handbook. South Holland, Ill: Goodheart-Willcox Co., 1992.

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Book chapters on the topic "Gas welding"

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Gooch, Jan W. "Gas Welding." In Encyclopedic Dictionary of Polymers, 336. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_5441.

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Gooch, Jan W. "Hot-Gas Welding." In Encyclopedic Dictionary of Polymers, 371. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_6040.

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Rotheiser, Jordan. "Hot Gas Welding." In Joining of Plastics, 321–34. München: Carl Hanser Verlag GmbH & Co. KG, 2009. http://dx.doi.org/10.3139/9783446445956.011.

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Chakravarthy, P., M. Agilan, and N. Neethu. "Tungsten Inert Gas Welding." In Flux Bounded Tungsten Inert Gas Welding Process, 11–36. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, 2020.: CRC Press, 2019. http://dx.doi.org/10.1201/9780367823207-2.

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Tanaka, Manabu. "Gas Tungsten Arc Welding." In Novel Structured Metallic and Inorganic Materials, 147–59. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7611-5_9.

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Chaturvedi, Mukti, and S. Arungalai Vendan. "Tungsten Inert Gas Welding and Design." In Advanced Welding Techniques, 63–88. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6621-3_4.

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Shi, Yonghua, Yanxin Cui, Shuwan Cui, and Baori Zhang. "A Novel High-Efficiency Keyhole Tungsten Inert Gas (K-TIG) Welding: Principles and Practices." In Welding Technology, 313–67. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63986-0_10.

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Livesey, Andrew, and Alan Robinson. "Gas welding, cutting and plasma arc." In The Repair of Vehicle Bodies, 169–96. 7th edition. | Boca Raton : Routledge, 2018. | Earlier editions by Alan Robinson.: Routledge, 2018. http://dx.doi.org/10.1201/9781351230650-9.

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Chakravarthy, P., M. Agilan, and N. Neethu. "Activated Tungsten Inert Gas (ATIG) Welding." In Flux Bounded Tungsten Inert Gas Welding Process, 37–43. First edition. | Boca Raton, FL : CRC Press/Taylor & Francis Group, 2020.: CRC Press, 2019. http://dx.doi.org/10.1201/9780367823207-3.

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Dorling, David, and James Gianetto. "Pipeline Welding from the Perspective of Safety and Integrity." In Oil and Gas Pipelines, 233–52. Hoboken, New Jersey: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119019213.ch18.

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Conference papers on the topic "Gas welding"

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Hu, Junling, and Tai-Lung Tsai. "Effects of Welding Current in Gas Metal Arc Welding." In 9th AIAA/ASME Joint Thermophysics and Heat Transfer Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-3584.

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Schellhorn, Martin, and Hartwig von Buelow. "CO laser deep-penetration welding: a comparative study to CO2 laser welding." In Gas Flow and Chemical Lasers: Tenth International Symposium, edited by Willy L. Bohn and Helmut Huegel. SPIE, 1995. http://dx.doi.org/10.1117/12.204988.

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Liu, YuKang, Zeng Shao, YuMing Zhang, Bo Fu, and Ruigang Yang. "Virtualized welding based teleoperation with pipe gas tungsten arc welding applications." In 2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM). IEEE, 2014. http://dx.doi.org/10.1109/aim.2014.6878313.

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Wu, Mingfei, and David Flynn. "An Advanced Gas Metal Arc Welding Machine Design for Low Spatter Welding." In 2018 IEEE 27th International Symposium on Industrial Electronics (ISIE). IEEE, 2018. http://dx.doi.org/10.1109/isie.2018.8433865.

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Liburdi, J., P. Lowden, and C. Pilcher. "Automated Welding of Turbine Blades." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-307.

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The welding of superalloys has been regarded, generally, as an art requiring the highest degree of welder skill and discipline. These highly alloyed materials are prone to micro-cracking and, in some cases, even the best welders cannot achieve satisfactory results. Now, however, advances in automation technology have made it possible to program precisely the complex airfoil shapes and the welding parameters. Consequently, turbine blades can be welded in a repeatable manner, with a minimum of heat input resulting in better metallurgical quality both in the base metal and the weld deposit. The application of this technology to the automated welding of high-pressure compressor turbine blade tips, and the refurbishment of low-pressure turbine blade shrouds are presented in this paper.
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Faerber, Mark, Wolfgang Danzer, and Joachim Berkmanns. "Laser welding with or without shielding gas?" In PICALO 2006: 2nd Pacific International Conference on Laser Materials Processing, Micro, Nano and Ultrafast Fabrication. Laser Institute of America, 2006. http://dx.doi.org/10.2351/1.5056968.

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Fletcher, Leigh, Gabriel Stecher, Cec Stubbs, John Norrish, Dominic Cuiuri, and Jeff Moscrop. "MIAB Welding of Oil and Gas Pipelines." In 2006 International Pipeline Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ipc2006-10603.

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Magnetically impelled arc butt (MIAB) welding is a “single shot” method of joining pipe and tube which is used in highly automated factory production lines in high volume industries such as automotive manufacture. The entire weld over the full joint thickness is made in one single operation, instead of using several passes as in conventional welding. It is believed to be capable of making finished welds in pipe from small diameters of around 75mm (DN75) up to around DN450, and to around 10mm wall thickness. The welding time is around 10 to 15 seconds, and the joint to joint cycle time will be about 1 minute. Under the right circumstances this means that pipelines in this size range could be welded at a rate of up to around 7.5km per day or more, with only a single small welding crew and a substantial reduction in overall cost. Whilst the circumstances that allow construction spreads to take advantage of that potential speed will not exist on every pipeline, there are still major economic and technical advantages to be had from using the process at more moderate rates. The present target thickness limit of 10mm will make it possible to weld Class 900 DN450 pipelines with maximum allowable operating pressures of up to 15 MPa. The use of MIAB welding will enable the entire paradigm of pipeline construction to be changed, and will lead to reductions in construction cost of around 15% or more when the process is first implemented. Larger savings are expected in the longer term.
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Browning, I. G. "Welding Hot Work Habitats." In SPE Health, Safety and Environment in Oil and Gas Exploration and Production Conference. Society of Petroleum Engineers, 1994. http://dx.doi.org/10.2118/27238-ms.

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Huegel, Helmut, M. Beck, J. Rapp, and Friedrich Dausinger. "Laser welding of aluminium." In XI International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference. SPIE, 1997. http://dx.doi.org/10.1117/12.270120.

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Zhang, Jainxun, Chuan Liu, and Jing Niu. "The Welding Deformations of Stainless Steel Pipes With Thick Wall by Narrow Gap Gas Tungsten Arc Welding." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-30088.

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Abstract:
The austenitic stainless steel pipes with thick wall are widely used in the nuclear power station and are welded by narrow gap gas tungsten arc welding process. The welding deformations of multi-pass butt-welded pipes with 65 and 70mm thickness are investigated experimentally and numerically in the paper. The transient axial deformation and axis shift deformation are measured during welding. An axisymmetric FE model and a thermal mechanical calculating procedure are presented to simulate the welding axial deformations. An effective calculating method by only considering the contraction of each welding pass in the model is proposed. The experimental results show that the axis shift deformation is very small and demonstrates an elastic movement during welding; the axial shrinkage of welded pipes is the mainly deformation, which is very significant during the first several weld pass, and decreases sharply after the weld groove has been filled at the height of 30% wall thickness that makes the stiffness of pipes large enough to resist the welding shrinkage.
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Reports on the topic "Gas welding"

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Wodtke, C. H., D. R. Frizzell, and W. A. Plunkett. Manual gas tungsten arc (dc) and semiautomatic gas metal arc welding of 6XXX aluminum. Welding procedure specification. Office of Scientific and Technical Information (OSTI), August 1985. http://dx.doi.org/10.2172/5139192.

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Reevr, E, M., and C. V. Robino. A Glove Box Enclosed Gas-Tungsten Arc Welding System. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/8850.

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Mornis, M. A., T. P. Quinn, T. A. Siewert, and J. P. H. Steele. Sensing of contact tube wear in gas metal arc welding. Gaithersburg, MD: National Institute of Standards and Technology, 1992. http://dx.doi.org/10.6028/nist.ir.3996.

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4

Siewert, Thomas A. Control of gas-metal-arc welding using arc-light sensing. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.ir.5037.

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Grossbeck, M. L., J. F. King, and D. J. Alexander. Recent progress on gas tungsten arc welding of vanadium alloys. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/543202.

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King, J. F., M. L. Grossbeck, G. M. Goodwin, and D. J. Alexander. Recent progress on gas tungsten arc welding of vanadium alloys. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/543274.

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Kline-Schoder, Robert, and Nabil Elkouh. Real-Time Robotic Control System for Titanium Gas Metal Arc Welding. Fort Belvoir, VA: Defense Technical Information Center, July 2004. http://dx.doi.org/10.21236/ada429714.

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Kline-Schoder, Robert. Real-Time Robotic Control System for Titanium Gas Metal Arc Welding. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada429294.

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Ortega, A. R. A two-dimensional thermomechanical simulation of a gas metal arc welding process. Office of Scientific and Technical Information (OSTI), August 1990. http://dx.doi.org/10.2172/6768141.

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Daumeyer, G. J. III. Progress report on a fully automatic Gas Tungsten Arc Welding (GTAW) system development. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/10106005.

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