Relevant bibliographies by topics / Electric arc welding

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

Academic literature on the topic 'Electric arc welding'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 June 2025

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Journal articles on the topic "Electric arc welding"

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McDowell, C. S. "ELECTRIC ARC WELDING." Journal of the American Society for Naval Engineers 27, no. 3 (2009): 629–39. http://dx.doi.org/10.1111/j.1559-3584.1915.tb00546.x.

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KINKEAD, Robert E. "ELECTRIC ARC WELDING.*." Journal of the American Society for Naval Engineers 30, no. 4 (2009): 898–900. http://dx.doi.org/10.1111/j.1559-3584.1918.tb01114.x.

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Grigoriev, N. D. "PERSEVERANCE CREATES RESILIENCE." World of Transport and Transportation 16, no. 5 (2018): 262–69. http://dx.doi.org/10.30932/1992-3252-2018-16-5-22.

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For the English full text of the article please see the attached PDF-File (English version follows Russian version).ABSTRACT The article is dedicated to the 125th anniversary of the birth of Vasily Nikitin, the successor to the Russian inventors of electric arc welding. He became the founder of the theory of electric machines and apparatus for electric arc welding and contributed to creation of electric welding engineering and introduction of electric arc welding in railway transport and in the national economy. Keywords: history, electrical engineering, electric welding, Vasily Nikitin, Benardos, Slavyanov, theory of electric welding machines, Gosplan, electrothermia, railway, shipbuilding, electric motors.
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Ibragimov, Farhod, Ortiq Abzoirov, and Lola Zhamolova. "Tension testing of steel welded belts of the saw gaskets of a linter machine." E3S Web of Conferences 390 (2023): 06015. http://dx.doi.org/10.1051/e3sconf/202339006015.

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The results of tensile testing of steel welded belts of saw blades of a linter machine are presented in the article. A universal testing machine was used to find the tensile stability of steel welded belts of saw gaskets of a linter machine. The results of tensile tests on the study of steel welded belts of gaskets with a thickness of 1.5 mm and 2 mm using electric arc welding and kemppi welding (a carbon dioxide welding technology) showed that in order to stretch welded belts up to 5 mm, 2820 N is necessary for a thickness of belts of 1.5 mm for electric arc welding, and 2900 N for kemppi; with a thickness of 2 mm, 3260 N is necessary for electric arc welding and 4440 N for kemppi welding. The results of the tensile tests of welded belts showed that when welding the belts of steel gaskets, both electric arc and kemppi welding can be used. In the production of steel belts of gaskets, it is appropriate to use kemppi, because the minimum thermal stress is reached in the welding zone.
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Darakov, D. S., V. I. Vishnyakov, A. A. A. Ennan, and S. A. Kiro. "Fume emissions by electric arc during gas metal arc welding." Physics of Aerodisperse Systems, no. 60 (December 15, 2022): 120–42. http://dx.doi.org/10.18524/0367-1631.2022.60.267071.

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The influence of welding arc regime on the welding fumes formation is studied by numerical modeling via description of separate processes inside the space charge regions near electrodes in the welding arc with consumable electrode. The modeling comprises the calculation of temperature profiles for electrons and heavy component, calculation of space distribution of gas components’ number densities, of gas particles’ mean free pathes, of electric potential and field, calculation of the heat transfer from electrode wire (anode) to molten pool (cathode). The formation of high temperature metal vapor from molten pool to environment as a function of arc current is demonstrated. The nucleation in the plasma of welding fumes is considered with taken into account ionization of vapor atoms via their interaction with nucleus surface. The growth of nucleus droplets via vapor condensation and coalescence is calculated. The coagulation of solid primary particles for various values of welding current is calculated and inhalable particle size distribution is demonstrated.
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Bakhori, Ahmad, Abdul Haris Nst, Muksin R. Harahap, Muslih Nasution, Suhardi Napid, and Bonar Harahap. "SOSIALISASI K-3 BAGI TEKNISI BENGKEL PENGELASAN SMAW DI KECAMATAN MEDAN TIMUR KOTA MEDAN." Jurnal Pengabdian Mitra Masyarakat 1, no. 2 (2022): 14–20. http://dx.doi.org/10.30743/jurpammas.v1i2.5112.

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Electrode shielded arc welding or better known as Shielded Metal Arc Welding (SMAW) is welding using an electric arc as a metal melt heater. An electric arc is formed between the shielded electrode and the base metal. Because of the heat from the electric arc, the base metal and the tip of the electrode melt and freeze together (Wryosumarto, 2004). With the ability of reason, humans are able to use metal as a very vital life aid. Various kinds of machine construction, buildings and others can be created in the presence of metal. The metal raises the need for assembly or joining technology. One such connection technology is by welding (welding). The purpose of the Occupational Health and Safety Counseling for SMAW Welding Workshop Operators in Gang Buntu Village, Medan Timur District, Medan City are: So that the welding company makes procedures and rules for occupational health and safety in the workplace. Welding industry companies provide Personal Protective Equipment (ADP) for welding operators. Because the issue of occupational health and safety is very important to get attention because it is directly related to the productivity and efficiency of workers.
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Toirov, M.Sh., K.A. Karimov, and B.T. Mardonov. "ELECTRIC ARC WELDING OF MAIN PIPELINES." Deutsche internationale Zeitschrift für zeitgenössische Wissenschaft 70 (December 18, 2023): 72–74. https://doi.org/10.5281/zenodo.10402175.

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This article describes the main processing methods, materials and equipment used in welding joints of pipelines in Russia. A comparison of various types of welding performance is given. The methods of non-destructive testing of welds, and promisingmethods used to eliminate the detected defects
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I., O. Vakulenko, O. Plitchenko S., and M. Makarevich D. "INFLUENCE OF CHEMICAL COMPOUNDS ON THE FORMING OF WELDING ARC." Science and Transport Progress, no. 5(53) (November 24, 2014): 92–100. https://doi.org/10.15802/stp2014/30824.

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<strong>Purpose.&nbsp;</strong>The purpose of work is a comparative analysis of chemical compounds influence on the process of forming arc welding and condition of its burning.&nbsp;<strong>Methodology.</strong>&nbsp;A wire with diameter 3 mm of low carbon steel with contain of carbon 0.15% was material for electrode. As chemical compounds, which determine the terms of arc welding forming the following compounds were used: kaolin; with admixtures of gypsum up to 60%; &nbsp;and with the iron concentration up to 50%. Researches were conducted using the direct electric current and arc of reverse polarity. As a source of electric current a welding transformer of type PSO-500n was used. On the special stand initial gap between the electrode and metal plate was 1-1.5 mm. The inter electrode space was filled with the probed chemical compound and the electric arc was formed.<strong>&nbsp;</strong>At the moment of arc forming the values of electric current and arc voltage were determined. After the natural break of electric arc, the final gap value between electrodes was accepted as a maximal value of arc length.&nbsp;<strong>Findings.</strong>&nbsp;Experimentally the transfer of metal in interelectrode space corresponded to the tiny drop mechanism. According to external signs the relation between maximal arc length and the power of electric current has the form of exponential dependence. Specific power of electric arc at the moment of arc forming per unit of its length characterizes the environment in the interelectrode space.&nbsp;<strong>Originality.</strong>&nbsp;1) Based on the analysis of influence of the studied chemical compounds on the formation processes of electric arc the inversely proportional relationship between the power of the electric current and the maximum arc length until the moment of its natural break is defined. 2) Ratio between the maximal arc length and the power of electric current, with the sufficiently high coefficient of correlation is submitted to the exponential dependence. Influence of the compounds under study on the process of electric arc forming is determined using the indexes of degree of the above mentioned correlation. 3) The value of specific power of electric current at the moment of electric arc forming per unit of arc length can be accepted as the parameter, which characterizes the state of interelectrode space environment.&nbsp;<strong>Practical value.</strong>&nbsp;In the conditions of identical adjusting force of electric current the sequence of location of the studied compounds in the order of increase of their influence on the process of arcing is determined. Minimum influence is observed from kaolin, and maximal one &ndash; from .
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Li, Kai, Hong Ming Gao, and Hai Chao Li. "Arc Behavior of Dry Hyperbaric Gas Metal Arc Welding." Advanced Materials Research 988 (July 2014): 245–48. http://dx.doi.org/10.4028/www.scientific.net/amr.988.245.

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The arc behavior in dry hyperbaric Gas Metal Arc Welding (GMAW) process was investigated by using a high speed camera system and welding electric signal acquisition system. The arc shape in hyperbaric argon environment of 0.1-2MPa shows quite different characteristic from that at normal pressure. With the increase of ambient pressure, the arc length turns shorter, arc column is contracted, and the arc brightness increases. At elevated ambient pressure, the arc length increases with increasing welding voltage. Arc voltage has a good linear relation with arc length. The sum of the fall voltages at ambient pressure of 0.4MPa, 0.8MPa, and 2MPa is nearly constant which is about 20.2-21.7V. The values of electric field strength of arc column at different ambient pressure were gained through the linear fit, which are increased with increasing ambient pressure. The arc static characteristics at elevated ambient pressure are raising characteristics, and it is shifted upward with increasing ambient pressure.
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Guo, Lin, Tian Hui Zhang, Ren Ping Xu, and Hui He. "Properties Effect of 16MnR Steel Weld Joint by Different Welding Methods." Advanced Materials Research 690-693 (May 2013): 2639–42. http://dx.doi.org/10.4028/www.scientific.net/amr.690-693.2639.

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Welding experiments were made with δ=14mm, 16MnR steel by three welding methods, manual electric arc welding, automatic submerged arc welding and semi-auto solid-core CO2 shielded arc welding, and weld joint test with samples from every welding specimen. The properties of welding joint were analyzed by three welding methods and in every position of welding, concluded that brittlement problems in heat affected zone arise from the CO2 shielded arc welding, it is because of the heat damage of alloy elements of weld joint metal while using CO2 shielded arc welding, but the strength of the weld joint is high because of its high fusion ratio. So for improving the mechanical properties of weld joints.it had better accelerate the cooling rate of weld bead and decrease the heat input of welding.
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Dissertations / Theses on the topic "Electric arc welding"

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Javidi, Shirvan Alireza. "Modelling of Electric Arc Welding : arc-electrode coupling." Licentiate thesis, Högskolan Väst, Avd för maskinteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5826.

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Arc welding still requires deeper process understanding and more accurateprediction of the heat transferred to the base metal. This can be provided by CFD modelling.Most works done to model arc discharge using CFD consider the arc corealone. Arc core simulation requires applying extrapolated experimental data asboundary conditions on the electrodes. This limits the applicability. To become independent of experimental input the electrodes need to be included in the arcmodel. The most critical part is then the interface layer between the electrodesand the arc core. This interface is complex and non-uniform, with specific physicalphenomena.The present work reviews the concepts of plasma and arc discharges that areuseful for this problem. The main sub-regions of the model are described, andtheir dominant physical roles are discussed.The coupled arc-electrode model is developed in different steps. First couplingsolid and fluid regions for a simpler problem without complex couplinginterface. This is applied to a laser welding problem using the CFD softwareOpenFOAM. The second step is the modelling of the interface layer betweencathode and arc, or cathode layer. Different modelling approaches available inthe literature are studied to determine their advantages and drawbacks. One ofthem developed by Cayla is used and further improved so as to satisfy the basicprinciples of charge and energy conservation in the different regions of thecathode layer. A numerical procedure is presented. The model, implementedin MATLAB, is tested for different arc core and cathode conditions. The maincharacteristics calculated with the interface layer model are in good agreementwith the reference literature. The future step will be the implementation of theinterface layer model in OpenFOAM.
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Erabelli, Prasad Rao 1962. "EXPERT SYSTEM FOR DESIGN OF ARC WELDING (ARTIFICIAL INTELLIGENCE)." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/291579.

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Davies, Mark H. "Numerical modelling of weld pool convection in gas metal arc welding /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phd2563.pdf.

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Smailes, Allan J. "Thermal modelling of gas metal arc welding using finite element analysis /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09ENS/09enss635.pdf.

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Ho, Yeu-Chuan 1960. "DESIGN OF ARC WELDING PROCESSES: A CAUSAL PERSPECTIVE." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/291663.

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The ability to make rational decisions based on the synthesis of various pieces of information and to eventually arrive at an integrated design plays a very important role in everyday engineering practice. In this paper, a conceptual framework for manufacturing design is obtained through a causal perspective. This framework is used in developing a knowledge-based system that gains insight into the process of arc welding from a few detailed analyses and experiments on simplified models and rationally arrives at an integrated design of the actual process using a hybrid axiomatic-algorithmic approach for design synthesis. The design strategy presented here may also be applied to any manufacturing process in general.
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Farson, Dave F. "Control of arc weld thermal cycles." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1387446228.

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Francis, John Anthony. "Principles for open-arc weld deposition of high-chromium white iron surface layers /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09PH/09phf81845.pdf.

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Schneider, Wolfgang. "Studies on arcing phenomena at high current discharges." Thesis, University of Essex, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310044.

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Narula, Swati. "Design, modeling and implementation of improved power quality switched mode power supplies for arc welding applications." Thesis, IIT Delhi, 2015. http://eprint.iitd.ac.in:80//handle/2074/8183.

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INVERNIZZI, BRUNO P. "Soldagem circunferencial do aço inoxidável super duplex UNS S32750 pelo processo MIG com controle CMT®." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28014.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-16T17:59:00Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-16T17:59:00Z (GMT). No. of bitstreams: 0<br>Neste trabalho foram realizados experimentos de soldagem circunferencial em tubos de aço inoxidável super duplex UNS S32750, com diâmetros de 19,05 mm e 48,20 mm. Foram executadas soldas utilizando-se diversos parâmetros de soldagem num equipamento MIG com controle CMT&reg Cold Metal Transfer. Os cordões de solda foram avaliados por inspeção visual e dimensional, além dos ensaios de tração e microdureza Vickers, bem como a análise microestrutural em conjunto com análise de precipitação de fases, a qual foi realizada em acordo com a prática A da norma ASTM A923, e ensaio de corrosão conforme a prática A da norma ASTM G48 em conjunto com a norma ASTM A923. Os resultados indicaram que a soldagem do tubo com diâmetro de 19,05 mm apresentou cordão de solda com dimensões inaceitáveis conforme norma, tendo sido esta condição atribuída a utilização de um elevado diâmetro do arame para as condições (parâmetros) usadas de soldagem. A soldagem do tubo com diâmetro de 48,20 mm apresentou falta de penetração nas condições empregadas, quando soldado pelo processo CMT&reg convencional. No caso da utilização do CMT&reg combinado com arco pulsado, em condições que geraram maior aporte de calor durante a soldagem, assim obteve-se penetração total da junta e acabamento superficial adequado. Os resultados indicaram que a soldagem utilizando o processo CMT&reg combinado com arco pulsado, nas condições (parâmetros) empregados geraram bom acabamento superficial, aliado propriedades mecânicas compatíveis, atendendo exigências de normas, bem como uma microestrutura balanceada e alta resistência à corrosão.<br>Dissertação (Mestrado em Tecnologia Nuclear)<br>IPEN/D<br>Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
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Books on the topic "Electric arc welding"

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Squires, William T. Arc welding. American Association for Vocational Instructional Materials, 1985.

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R, Walker John. Arc welding. Goodheart-Willcox Co., 2010.

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R, Walker John. Arc welding. Goodheart-Willcox Co., 2010.

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R, Walker John. Arc welding. Goodheart-Willcox Co., 2010.

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R, Walker John. Arc welding. Goodheart-Willcox Co., 2010.

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Company, Lincoln Electric. Arc welding safety: Guide for safe arc welding. Lincoln Electric, 2008.

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R, Walker John. Arc welding. Goodheart-Wilcox, 2004.

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Street, J. A. Pulsed arc welding. Abington Pub., 1990.

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Ballis, William L. Arc welding: Questions & answers. Greyden Press, 1997.

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Ballis, William L. Arc welding: Theories & techniques. Greyden Press, 1997.

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Book chapters on the topic "Electric arc welding"

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Dambrauskas, Algirdas, Bronius Karaliunas, and D. Shulskis. "Microprocessor Control System of an Electric Arc Welding Unit." In Solid State Phenomena. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/3-908451-21-3.29.

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Justine, Yengi Emmanuel Daro, Tomi Zlatar, and Teerayut Sa-ngiamsak. "Risk Management Process for an Electric Arc Welding Workshop in South Sudan." In Occupational and Environmental Safety and Health V. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-38277-2_41.

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Vaduvoiu, Gheorghe. "Some Particularity Concerning the Electric Arc Welding of the P/M Steel Pieces." In Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607277.ch49.

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Matarneh, Mohammad Essa, and Viktor Artiukh. "Influence of Controlling Magnetic Fields on Metal Structure at Electric Arc Welding and Surfacing." In XV International Scientific Conference “INTERAGROMASH 2022”. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21432-5_296.

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Matarneh, Mohammad Essa, and Viktor Artiukh. "Usage of Controlling Magnetic Fields Effect for Performance Improvement of Electric Arc Welding and Surfacing." In XV International Scientific Conference “INTERAGROMASH 2022”. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-21432-5_295.

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Bernatskyi, Artemii, Pavlo Goncharov, Mykola Sokolovskyi, Olha Goncharova, and Taras Nabok. "Spot Welded Joints of Steels Produced by Electric Arc and Laser Welding in Different Spatial Positions." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18487-1_20.

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Yin, Zhiguo. "Qualification Testing of Rebar Electric Arc Pressure Welding Joints Based on CNN-SVM for Apparent Features." In Atlantis Highlights in Engineering. Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-449-5_59.

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Sire, S., B. Espion, and M. Ragueneau. "The emergence of electric arc welding in the construction and reinforcement of railway bridges in France, 1930s–1940s." In History of Construction Cultures. CRC Press, 2021. http://dx.doi.org/10.1201/9781003173359-101.

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Chen, Huanming, Yichen Meng, and Xiaofeng Wang. "Combined Planning between Welding Pose and Welding Parameters for an Arc Welding Robot." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19959-2_9.

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Na, Suck-Joo. "Application and Research of Arc Welding Automation in Korea." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19959-2_41.

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Conference papers on the topic "Electric arc welding"

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V, Saminath, Mukti Chaturvedi, and Arungalai Vendan S. "Simulative Analysis of Electric Arc Behavior in Metal Welding with Matlab/Simulink." In 2025 International Conference on Intelligent and Innovative Technologies in Computing, Electrical and Electronics (IITCEE). IEEE, 2025. https://doi.org/10.1109/iitcee64140.2025.10915314.

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Svatos, Pavel. "Radio Noise and its Reduction in Modern Power Sources for Hand Electric ARC Welding." In EMC_1988_Wroclaw. IEEE, 1988. https://doi.org/10.23919/emc.1988.10832866.

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Gómez Flórez, Pablo Andrés, Alejandro Toro Betancur, John Edison Morales Galeano, and Jeisson Mejía Velásquez. "PAW and GTAW Welding Repair of HP/IP and Generator Rotors of a Steam Turbine for Electric Power Generation." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0247.

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Abstract This work describes the repair procedure conducted on the High Pressure/Intermediate Pressure (HP/IP) and generator rotors of a 180 MW steam turbine General Electric (GE) - STAG207FA type D11 installed at La Sierra Thermoelectric Power Plant in Puerto Nare, Colombia. A lubricant supply failure at base load caused severe adhesive damage to the shafts in the bearing support areas and a permanent 3.5 mm bow at the HP/IP rotor mid span section, which required a complex intervention. The repair process began with the identification of the rotors manufacturing material through in-situ metallographic replicas, handheld XRF analysis and surface hardness measurements. Volumetric manual Gas Tungsten Arc Welding (GTAW) welding reconstruction of cracked areas followed by a surface overlay using GTAW and Plasma Arc Welding (PAW) welding processes were applied with a modular mechanized system, where a stress relief treatment through vibration was implemented with the help of computational simulations carried out to determine the fundamental frequencies of the rotors. Geometric correction of the HP/IP rotor mid span section was achieved thanks to the excitation of the rotor at some fundamental frequencies defined by the dynamic modeling and the use of heat treatment blankets at specific locations as well. Finally, after machining and polishing procedures, the power unit resumed operation eleven months after the failure and remains in service to the present date.
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Bonds, Richard W. "Causes, Investigation, and Mitigation of Stray Current Corrosion on Ductile Iron Pipe." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91516.

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Abstract As the designation implies, stray currents pertaining to underground pipelines are direct currents flowing through the earth from a source other than the pipeline being affected. When these stray direct currents accumulate on a metallic pipeline or structure, they can induce electrolytic corrosion of the metal or alloy. Sources of stray current include impressed current cathodic protection systems, electric transit systems, arc-welding equipment, direct current transmission systems, and grounding of electric systems to water pipe. For many years, the Ductile Iron Pipe Research Association (DIPRA) has conducted research on the effects of electrolytic corrosion on both bare and polyethylene-encased iron pipe. This paper presents some of the findings obtained from these investigations of stray current influence as they apply to ductile iron pipe in the vicinity of impressed current cathodically protected pipelines.
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Dutilleul, Thomas, Robert Widdison, James Connell, John Crossley, Mark Albert, and David Gandy. "Complex Linear Welding Development for Thick Section Electron Beam Welding for Pressure Vessel Applications." In AM-EPRI 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.am-epri-2024p0183.

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Abstract As part of a Department of Energy (DOE) funded program assessing advanced manufacturing techniques for Small Modular Reactor (SMR) applications, the Nuclear Advanced Manufacturing Research Centre (AMRC) and the Electric Power Research Institute (EPRI) have been developing Electron Beam Welding (EBW) parameters and procedures based upon SA508 Grade 3 Class 1 base material. The transition shell, a complex component connecting the lower assembly to the upper assembly is a shell that flares up with varying thicknesses across its section. The component due to its geometry could be built by near net shape powder metallurgy hot isostatic pressing instead of conventional forging techniques. The demonstrator transition shell here is built from several sub-forging as a training exercise. The complex geometry and joint configuration were selected to assess the EBW as a suitable technique. This paper presents results from the steady state welding in the 60-110 mm material thickness range, showing that weld properties meet specification requirements. Weld quality was assured by Time-of-Flight Diffraction (ToFD). The transition shell was completed by welding a flange to the assembly. The presented transition shell assembly represents 6 welded sections all fabricated in below 100 min total welding time.
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Jungert, David, Stephen B. Gibson, Sean Lepine, and Len J. Krissa. "Mechanical Testing of Drawn Arc Silver Brazed Connections for Cathodic Protection." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13192.

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Abstract Cathodic protection (CP) requires secure and consistent electrical connections to ensure the longevity of installed CP systems. The purpose of research presented in this paper is to evaluate the mechanical strength of CP structure connections applied using drawn arc silver brazing (DASB), commonly referred to as pin brazing. A variety of samples were created using commercially available DASB equipment and consumables. Tensile and bend testing was conducted in accordance with the criteria outlined in the International Standards Organization (ISO)(1) document ISO 14555:2017 Welding – Arc stud welding of metallic materials1. The results showed that DASB connections, when properly applied, can withstand forces resulting from typical CP installations.
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Jungert, David, Stephen B. Gibson, Sean Lepine, and Len J. Krissa. "Metallurgical Testing of Drawn Arc Silver Brazed (DASB) and Thermite Welded Connections for Cathodic Protection." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14883.

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Abstract Secure electrical connections are necessary for all cathodic protection (CP) systems on buried pipelines. Electrical connections to structures can be made by mechanical means or by metallurgical bonding methods, such as drawn arc silver brazing (DASB) and thermite welding. Metallurgical bonding is often preferred when making connections to underground steel pipelines. Experience has shown that these methods consistently make sturdy and low electrical resistance bonds. However, the effects of these metallurgical bonding methods on pipelines are not well documented. Analysis of hardness measurements in the heat affected zone (HAZ), liquid metal embrittlement readings (LME), and microimaging of the bond cross section were used to gauge the impact that DASB &amp; thermite welded connections have on pipeline integrity.
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Liu, C., K. W. Gao, M. Zhou, L. Wei, and Q. L. Liu. "Corrosion Behaviour of Low Alloy Steel TIG Weldment in Simulated Groundwater." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07421.

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Abstract A safe and reliable method to dispose the high-level radioactive waste is geological disposal with the waste sealed in waste packaging containers, presently. Container material selections are mostly alloys. During the long term geological disposal, the greatest threat to the packaging container is corrosion caused by groundwater which may appears in some disposal repositories. Previous research shows that the welded joint, as a special area formed during the process of the containers, is more likely to be subjected to corrosion. This paper investigates the general corrosion and crevice corrosion behavior of the welding joints of E355CC in a simulated groundwater reference to BeiShan groundwater. The welding joints were fabricated by Tungsten Inert Gas Arc Welding method. Scanning Electron Microscopy, Contour-graph were used to characterize the corroded samples. The welded joints were immersed in the simulated groundwater with different temperatures and oxygen concentrations for 6 months. The result shows that crevice corrosion does not occur on the welding joint of E355CC at room temperature. The most prone to corrosion is the Heat Affected Zone. At room temperature, the difference of corrosion rates between three regions becomes more apparent when the crevice present. .Local corrosion occurs on the welding joint at 90°C. There is no significant different between different zones.
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Zhou, Xiahan, Ding Zhang, Xiaoyi Zhou, et al. "An Arc Welding Module of Automatic Equipment for Tubular Terminal with Precise Energy Control Technology Based on PWM." In 2024 5th International Symposium on New Energy and Electrical Technology (ISNEET). IEEE, 2024. https://doi.org/10.1109/isneet64164.2024.10956111.

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Montgomery, M., and O. H. Larsen. "Field Investigation of Various Weld Overlays in a Waste Incineration Plant." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05309.

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Abstract A test waterwall was fabricated so that alternatives to alloy 625 could be exposed in the first pass of the waste incineration plant Haderslev. The difference between application method was also a parameter, such that manual welding, machine welding and arc spray coating of alloy 625 were compared. In addition to the test waterwall exposure, the chemical environment from the waste incineration was also monitored by analyzing deposits and corrosion products from various locations in the boiler. These were analyzed with respect to morphology and composition using electron microscopy with EDS analysis. Based on these results it was detected that the aggressive environment had changed during the exposure period which made direct comparison difficult between alloys that had been exposed the first year and those exposed for the second year. However, all candidate alloys could be compared with alloy 625 which was present in every test panel. It was observed that all the weld overlay test sections behaved similar to machined alloy 625 in that there was general corrosion and pitting corrosion. In addition, alloy 622 also exhibited preferential corrosion with respect to its dendrite structure.
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Reports on the topic "Electric arc welding"

1

Groeneveld. L51690 Evaluation of Modern X-70 HFER Line Pipe. Pipeline Research Council International, Inc. (PRCI), 1992. http://dx.doi.org/10.55274/r0010316.

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In recent years, several pipe mills have produced heavy-wall, large diameter pipe from plates of microalloyed steels that were controlled-rolled to develop properties to meet the API 5LX Grade 70 or Grade 80 requirements and that were electric resistance welded (ERW) using advanced techniques. The use of advanced electric seam-welding practices on the steels produced using advanced steel making and processing methods offers the possibility of obtaining high strength line pipe at a lower cost than pipes produced from similar steels but with double submerged arc seam welds. The present study was undertaken to evaluate the properties of the pipe body and the ERW seam-weld region of a recently produced heavy-wall X70 line pipe. This report describes the evaluation of that pipe. The mechanical properties of the weld zone from this pipe were evaluated and reported under Task 18-89. Those data are included in this report. A high-frequency electric resistance welded (HFERW) X70 line pipe was evaluated to assess the strength properties, fracture behavior, thermal stability, and susceptibility to environmentally induced degradation that may affect its behavior in gas transmission service. A 20-inch-(508 mm)-diameter by 0.500-inch-(12.7 mm)-wall high-frequency, electric-resistance-welded (HFERW) X70 line pipe was evaluated to assess the strength properties, fracture behavior, thermal stability, and susceptibility to environmentally induced degradation that may affect its behavior in gas transmission service. The steel from which the pipe was produced was processed using advanced steel-making practices that resulted in a low sulfur content and was microalloyed with Cb, V, and Ti. The steel was controlled rolled with 75 percent of the rolling reduction being accomplished at temperatures below 1418 F (770 C); the finishing temperature was 1328 F (720 C) and the steel was hot coiled after finishing. The seam weld was produced by high frequency electric resistance welding and the seam weld region was post-weld normalized.
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Salter and Weston. L51534 A Study of New Joining Processes for Pipelines. Pipeline Research Council International, Inc. (PRCI), 1987. http://dx.doi.org/10.55274/r0010083.

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Over many decades it has been accepted that the most economical way to produce a pipeline is to join together the standard lengths of pipe as quickly as possible, using a highly mobile task force of welders and other technicians, leaving tie-ins, crossings, etc. to smaller specialist crews. The work pattern which evolved almost invariably involved several crews of welders strung out along the pipelines, progress being controlled by the rate at which the leading pair could complete the weld root. The spread from this first crew to final inspection could be a considerable distance, acceptable on land but not acceptable offshore (a rapidly increasing need which reached a peak in the 1970's). This operation, involving costly lay barges, demanded even higher throughput rates to be achieved from a more compact working spread. In common with most manufacturing technologies, there was an increasing dissatisfaction with a system which relied entirely on the skill of a limited number of highly paid men who had little incentive to change their working practices. Increasingly there came reports of the development of new approaches to joining line-pipe, ranging from the mechanization of arc welding to entirely different forms of joining, for example, electron beam welding or mechanical joining. The investment in some of these developments is reported to be several million dollars. The review of present pipelining practice shows that only a handful has been put to practical use, and in the western world, probably only one, an arc welding variant, has been used to produce more than a few hundred miles of pipeline. The information available on these developments is sparse and is scattered amongst a range of companies and research agencies. A literature review and research study to collect together as much of this information as is available, assemble it into a coherent and useable form and identify those developments which show the most promise to fulfill future needs. The main body of the report, which reviews development of the welding processes has been divided into three main joining categories, Fusion Welding, Forge Welding and Mechanical Interference Joining. Within each category each process is considered separately in terms of process principles, general applications, application to pipeline welding, equipment for pipe welding, consumables, process tolerance and skill requirements, weld quality and inspection, process economics, limitations and future developments. This study and comprehensive report compares the economics of the various alternatives. For each process an estimate has been made of the procedural and development costs involved as well as personnel needs and likely production rates.
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Dinovitzer, Aaron, Sanjay Tiku, and Amin Eshraghi. PR-214-153739-R01 ERW Fatigue Life Integrity Management Improvement-Phase III. Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011574.

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While the general fracture mechanics methodology for calculating fatigue lives is well documented and validated, its application in the definition of pipeline system fatigue lives have differed from field experience. The source and magnitude of the conservatism inherent in the calculated fatigue life estimates are a concern when establishing integrity management programs. Of particular interest, are the fatigue life estimates used in the integrity management programs for Electric resistance welding (ERW) pipeline systems that are primarily concerned with pipe wall anomalies oriented along the pipe axis. In this project, fatigue crack growth rate parameters were generated for pipe body and ERW. Axial flaws of different sizes were machined in pipe body and weld center line of two different pipe geometries and subjected to cyclic pressure tests. Fatigue crack growth rate of the flaws in the full-scale fatigue tests was monitored. The full-scale fatigue tests results were compared to existing codified treatments to quantify the level of conservatism inherent in the current state of practice. Recommendations were provided to enhance the precision and manage conservatism in fatigue crack growth rate calculations used in integrity management. This report has a related webinar.
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Lukezich. L51775 Susceptibility of Modern ERW Pipe to Selective Weld Seam Corrosion in Wet Environments. Pipeline Research Council International, Inc. (PRCI), 1998. http://dx.doi.org/10.55274/r0010424.

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Grooving corrosion is a phenomenon by which the weld seam of electric resistance welded (ERW) pipe is preferentially attacked in wet natural gas environments containing CO,. The attack initiates as an aligned string of pits which grow and intersect, forming a round-bottomed groove of damage centered on the weld seam. The susceptibility of ERW pipe to this damage mechanism is known to be related to the chemical composition (particularly the sulfur content) of the pipe, the welding process employed, and the use of a post weld heat treatment. Of particular concern to the natural gas pipeline industry is the fact that at the resent time there are no effective means for predicting the susceptibility of a specific lot of ERW pipe to grooving corrosion, prior to placing the pipeline in service. The objective of this program, therefore, is to begin the development of an accelerated laboratory test technique which may be useful as a screening test to establish the susceptibility of an ERW weld to grooving corrosion. A stepped potential, potentiostatic electrochemical test method was used to evaluate the susceptibility of ERW welds from five different pipe samples to grooving corrosion in environments representative of natural gas production. Three of the welds were believed to be susceptible to grooving corrosion and the remaining two were believed to be non-susceptible. Testing was performed under a variety of conditions (environment chemistry, temperature, and levels of polarization) in an attempt to identify conditions which enabled the correct differentiation between the susceptible and non-susceptible specimens.
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Tucker. L51728 Feasibility of a Pipeline Field Weld Real-Time Radiography (Radioscopy) Inspection System. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0010117.

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Inspection of pipeline field girth welds during pipeline construction is accomplished by film radiographic: methods. Film radiography of materials is a 70 year old technology. There have been many advances in that 70 year history in equipment and films, but the process of making the radiograph is essentially the same. The film radiography process is time-consuming, costly, environmentally impacting and very operator (inspector) dependent. There are recent and almost daily advances in technologies using x-ray imaging other than film. Double-jointed pipe welds at pipe mills and at double-joint operations have been inspected with stationary real-time radioscopic systems for many years. This electronic imaging technology, known as "�radioscopy"�, has the potential to significantly improve pipeline project schedules and cost by eliminating some of the shortcomings of film radiography. Radioscopy is currently accepted for use by many nationally accepted standards including API-SL, Specification for Line Pipe, and API-1104, Welding of Pipelines and Related Facilities. Most of the real-time systems in use today are fixed installations in pipe mills, foundries or fabrication shops. The ability to produce the required image sensitivity with real-time has been established by these fixed installations. These systems have proven to be very cost effective. In the course of conducting this study, QCC attended several conferences, including the International Society for Optical Engineering (SPIE) Conference in Boston, contacted several hundred potential vendors of radioscopic and radiographic equipment, witnessed demonstrations on existing radioscopic imaging systems and conducted several breadboard system demonstrations. The enclosed exhibit section contains a list of vendors that have products applicable to a radioscopic system.
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Electrical safety and arc welding toolbox talk. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2022. http://dx.doi.org/10.26616/nioshpub2022128.

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