Journal articles: 'Arc welding'

1

HIROTA, Yukinori. "Arc Welding." JOURNAL OF THE JAPAN WELDING SOCIETY 77, no. 5 (2008): 437–40. http://dx.doi.org/10.2207/jjws.77.437.

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ERA, Tetsuo. "Arc Welding." JOURNAL OF THE JAPAN WELDING SOCIETY 79, no. 5 (2010): 442–45. http://dx.doi.org/10.2207/jjws.79.442.

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ERA, Tetsuo. "Arc Welding." JOURNAL OF THE JAPAN WELDING SOCIETY 81, no. 5 (2012): 380–83. http://dx.doi.org/10.2207/jjws.81.380.

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Lincoln, J. F. "ARC WELDING." Journal of the American Society for Naval Engineers 39, no. 3 (March 18, 2009): 592–97. http://dx.doi.org/10.1111/j.1559-3584.1927.tb02037.x.

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KOMURA, Masaharu. "Shielded Metal Arc Welding^|^bull;Submerged Arc Welding." JOURNAL OF THE JAPAN WELDING SOCIETY 79, no. 2 (2010): 158–65. http://dx.doi.org/10.2207/jjws.79.158.

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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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Dar, Yunis Ahmad, Charanjeet Singh, and Younis Farooq. "Effects of External Magnetic Field on Welding Arc of Shielded Metal Arc Welding." Indian Journal of Applied Research 4, no. 4 (October 1, 2011): 200–203. http://dx.doi.org/10.15373/2249555x/apr2014/60.

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Ma, Guo Hong, Zhao Yang Zhang, and Jia Ye. "Temperature Simulation of Aluminium Alloy Double-Arc Welding Process on Simplified Conditions." Advanced Materials Research 661 (February 2013): 158–61. http://dx.doi.org/10.4028/www.scientific.net/amr.661.158.

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In this paper we used ANSYS finite element software to simulate the temperature field in 7a52 aluminum alloy double-arc welding process and analyze the welding seam's forming characteristics. We conducted the welding temperature field numerical simulation in the same welding seam forming conditions by loading heat source of single-arc and double-arc separately, which used gauss heat source model and used voltage, welding current and speed as key parameters. The experiments indicated that the designed double-arc heat source model could generally represent the double-arc welding process. Compared with single-arc welding process, the double-arc welding had higher welding efficiency and narrower heat affected zone. Furthermore, the temperature of double-arc welding pool raised faster. All these advantages could improve the welding efficiency.

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He, Kuan Fang, Xue Jun Li, Ji Gang Wu, and Qi Li. "Three-Dimensional Temperature Field Numerical Simulation of Twin-Arc High-Speed Submerged Arc Welding Process Based on ANSYS." Advanced Materials Research 216 (March 2011): 188–93. http://dx.doi.org/10.4028/www.scientific.net/amr.216.188.

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Based on analysis of submerged arc welding arc heat source model and droplet heat inputting uniform distribution, ANSYS parametric design language was applied to develop sub-program for loading moving heat sources. ANSYS software was used to calculate the temperature fields. In the same welding conditions, weld seam width and depth value of experiments and simulation are contrasted, the biggest error was below 5%. The influence of different welding speed to molten pool temperature of twin-arc submerged arc welding was analyzed, it obtained results that temperature field distribution of twin-arc submerged arc welding changes more gentle than single arc submerged arc welding in condition of increased welding speed, it was helpful to the further analysis of molten pool dynamic behavior and weld seam shape factors of twin-arc high speed submerged arc welding.

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MIYASAKA, Fumikazu. "Arc Welding Processes." JOURNAL OF THE JAPAN WELDING SOCIETY 78, no. 5 (2009): 426–27. http://dx.doi.org/10.2207/jjws.78.426.

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HIROTA, Yukinori. "Arc Welding Robot." JOURNAL OF THE JAPAN WELDING SOCIETY 85, no. 7 (2016): 642–45. http://dx.doi.org/10.2207/jjws.85.642.

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HIRATA, Yoshinori. "Pulsed Arc Welding." Journal of the Japan Welding Society 71, no. 5 (2002): 389–404. http://dx.doi.org/10.2207/qjjws1943.71.389.

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Hirata, Y. "Pulsed arc welding." Welding International 17, no. 2 (January 2003): 98–115. http://dx.doi.org/10.1533/wint.2003.3075.

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Uniat, Linda, R. Joseph Olk, and Sidney J. Hanish. "Welding Arc Maculopathy." American Journal of Ophthalmology 102, no. 3 (September 1986): 394–95. http://dx.doi.org/10.1016/0002-9394(86)90021-8.

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McDowell, C. S. "ELECTRIC ARC WELDING." Journal of the American Society for Naval Engineers 27, no. 3 (March 18, 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 (March 18, 2009): 898–900. http://dx.doi.org/10.1111/j.1559-3584.1918.tb01114.x.

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YUE, Jianfeng. "Welding pool adaptive vision detection for arc welding robot gas metal arc welding." Chinese Journal of Mechanical Engineering 44, no. 04 (2008): 206. http://dx.doi.org/10.3901/jme.2008.04.206.

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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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Pandey, Sunil, Narinder Mohan, G. Padmanabham, and Masood Aghakhani. "Welding Current in Submerged Arc Welding." Indian Welding Journal 36, no. 1 (January 1, 2003): 16. http://dx.doi.org/10.22486/iwj.v36i1.178841.

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Chen, Yong, Chenfu Fang, Zhidong Yang, Jiayou Wang, Guoxiang Xu, and Xiaoyan Gu. "Cable-type welding wire arc welding." International Journal of Advanced Manufacturing Technology 94, no. 1-4 (August 19, 2017): 835–44. http://dx.doi.org/10.1007/s00170-017-0943-4.

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Yoo, C. D., Y. S. Yoo, and H.-K. Sunwoo. "Investigation on arc light intensity in gas metal arc welding. Part 1: Relationship between arc light intensity and arc length." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 211, no. 5 (May 1, 1997): 345–53. http://dx.doi.org/10.1243/0954405971516329.

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The arc length has been detected through the arc because the welding current and voltage vary linearly with the arc length. In this work, the relationship between the arc light intensity and arc length is investigated through analytic modelling. The arc light intensity is derived as a function of the arc length and welding current using the heat balance in the plasma. Experiments are carried out to verify the proposed model and to find out the effects of welding conditions on the arc light intensity in gas metal arc welding (GMAW). The arc light intensity varies proportionally to the arc length and signal quality is enhanced with a fast weaving speed. The predicted results of the arc light intensity show reasonably good agreement with the experimental data.

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Li, Xing Hui. "Welding Operation Technique of Welding Electrode Arc Welding Overhead Welding Test Board." Key Engineering Materials 861 (September 2020): 122–26. http://dx.doi.org/10.4028/www.scientific.net/kem.861.122.

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Welding electrode arc welding, upside welding, single side welding, double side forming welding operation technology is the most difficult welding process in manual arc welding operation. It is an operation technology that senior welding operators must master, and it reflects the technical level of the welding welder. . In this paper, the welding operation essentials and operation skills of backing welding, filling welding and cover welding are studied for the welding operation of the back welding test board, which creates a theoretical basis for the improvement of the welding operator's operation skills.

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Jones, Jerald. "Hybrid Induction Arc Welding Reduces Weld Distortion and Boosts Productivity." AM&P Technical Articles 173, no. 1 (January 1, 2015): 34–37. http://dx.doi.org/10.31399/asm.amp.2015-01.p034.

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Abstract A new welding process known as hybrid induction arc welding (HIAW) or high deposition arc welding (HiDep) uses a hybrid approach to reduce—or even eliminate—weld distortion and greatly increase productivity. Operating directly in front of the arc welding torch, a portable induction coil heats the surfaces of the weld to, or near, the melting point. Heat generated by the welding arc is primarily used to melt the welding wire. This novel process operates at speeds two to four times faster than conventional arc welding and substantially reduces weld distortion.

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Fulong, ZHANG, ZHANG Hong, and LIU Fengde. "Effect of Laser-arc Hybrid Welding Energy Parameters on Welding Stability." MATEC Web of Conferences 175 (2018): 02019. http://dx.doi.org/10.1051/matecconf/201817502019.

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The high-speed camera was used to collect the droplet transfer pattern and arc pattern of the laser-arc hybrid welding process. Using the methods of image processing and mathematical statistics, the effects of different laser and arc power conditions on the welding stability were studied. The results show that the melting width depends on the welding current, the depth of penetration depends on the laser power, the droplet transition pattern, the actual filament spacing and the arc length determine the welding stability of the laser arc hybrid welding.

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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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Chae, Hyun Byung, Cheol Hee Kim, Jeong Han Kim, and Se Hun Rhee. "Welding Phenomena in Hybrid Laser-Rotating Arc Welding Process." Materials Science Forum 539-543 (March 2007): 4093–98. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.4093.

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Hybrid laser-rotating arc welding (HLRAW) process was designed by combining the laser beam welding (LBW) process with the rotating gas metal arc welding (RGMAW) process. In this study, comparing with conventional HLAW, weld bead characteristics as a function of the various process parameters were evaluated for HLRAW. Moreover, welding phenomena were analyzed by high speed monitoring with laser illumination. The arc rotation enhances the weld pool motion, therefore it reduces the undercut formation which is one of most critical weld defects in the conventional laser-arc hybrid welding.

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Zhao, Gang, and Chao Shan. "The Simulation of New Arc Welding Power Based on Matlab." Advanced Materials Research 383-390 (November 2011): 7270–75. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7270.

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Arc welding technology is an important part of modern welding technology, and providing the energy of arc welding power source is welding technology at the core. The traditional arc welding power source is backward in technology and large amount of consumables, so arc welding inverter power has become the direction of its development. With the enhanced awareness of energy saving and environmental protection, this paper concentrates on new high power factor of arc welding power source as the research object, and introduces the main structure of high-power arc welding power source. At the same time, using Matlab software for modeling and simulation analysis on the main circuit and control circuit, the simulation results comply with the design requirements and verify the feasibility of the system design.

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Baskoro, Ario Sunar, Tuparjono, Erwanto, S. Frisman, Adrian Yogi, and Winarto. "Improvement of Tungsten Inert Gas (TIG) Welding Penetration Using the Effect of Electromagnetic Field." Applied Mechanics and Materials 493 (January 2014): 558–63. http://dx.doi.org/10.4028/www.scientific.net/amm.493.558.

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Tungsten Inert Gas (TIG) welding is a process which an electric arc generated by the tungsten electrode to the workpiece and the welding area protected by a protective gas. Arc shape can be affected by electromagnetic force. In previous study, the use of some electromagnetic field around the arc has influenced the welding results. In this study, electromagnetic field generated from the solenoids was given to the welding arc. Welding process was conducted on Stainless Steel. The electromagnetic field made the arc becomes deflected. This deflection was controlled by the solenoid by activating it using a microcontroller. The results showed that the use of solenoid as a source of electromagnetic field has influenced the welding arc. Penetration produced by using a solenoid has deeper penetration than welding process without using solenoid. The increase of the welding power efficiency was 10.9% for arc current I = 80 A and 9.85% for arc current I = 90 A.

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Kim, Ji-Sung, and Jong-Do Kim. "Quantitative analysis of surfaces of cross-section in butt welding of aluminum alloy 5083 using laser–arc hybrid welding." International Journal of Modern Physics B 35, no. 14n16 (May 14, 2021): 2140031. http://dx.doi.org/10.1142/s0217979221400312.

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The alloy aluminum of 5000 series will have relatively high strength through solid solution strengthening of Mg. However, when laser welding the 5000 series aluminum alloys, the Mg is selectively evaporated by welding heat due to its low melting and vaporization points, resulting in a reduction in the strength of welds. Therefore, laser welding application is difficult because of such a reduction in strength[Formula: see text] [M. Peel, A. Steuwer, M. Preuss and P. J. Withers, Acta Mater. 51, 4791 (2003); A. Haboudou, P. Peyre, A. B. Vannes and G. Peix, Mater. Sci. Eng. A 363, 40 (2003)]. In this paper, welding experiments were carried out using laser and laser–arc hybrids on aluminum alloy 5083 with 8-mm thickness. Tensile testing, scanning electron microscopy (SEM) analysis and electron probe microanalyzer (EPMA) analysis were carried out on specimens on which the laser and laser–arc hybrid weldings were performed. According to the tensile test results, the tensile strength during laser–arc hybrid welding was greater than 85% of the parent metal. In addition, EPMA analysis showed that the strength of the laser–arc hybrid welds was maintained by supplementing the optional evaporating Mg element, since they use the filler wire.

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Mohan, Sreejith, S. P. Sivapirakasham, P. Bineesh, and K. K. Satpathy. "Strategies for Controlling Welding Fumes at the Source - A Review." Applied Mechanics and Materials 592-594 (July 2014): 2539–45. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.2539.

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Exposure to welding fumes and its related hazards has always been a matter of serious concern. The mass and composition of fumes from welding depends on several factors. A detailed knowledge of these factors is necessary for understanding the mechanism of fume formation and developing suitable control strategies. This paper gives a literature overview on the various factors affecting welding fumes and strategies for controlling it. The paper focus on types of welding process like Manual Metal Arc Welding (MMAW) or Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), Flux Core Arc Welding (FCAW), Gas and Tungsten Arc Welding (GTAW). The research in the area of controlling fumes at the source has grown rapidly recently. Still, effective methods have hardly been explored. Improving arc stability by addition of materials with low ionization potential to the welding electrode lead to promising new research directions.

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Lee, Sol Mi, and Young Whan Park. "Development of an Arc Image Classification Algorithm in Tip-Rotating Arc Welding using Camera Image Monitoring and Deep Learning." Journal of Welding and Joining 41, no. 4 (August 31, 2023): 299–307. http://dx.doi.org/10.5781/jwj.2023.41.4.9.

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In this study, we developed a welding system and welding monitoring system for GMA (Gas Metal Arc) aluminum welding using a tip-rotation arc welding torch. Welding was performed under various conditions, including suitable, low-heat, and high-heat input conditions. For welding monitoring, current and voltage were measured, and arc images were obtained. After the experiments, arc images were analyzed and classified based on the bead quality and cross-sectional analysis data. To develop a welding quality prediction model using arc images, a CNN-based model was developed. A total of 5,203 images were trained, and the quality was predicted for 631 images. The prediction accuracy was 99.88% for training data, and the possibility of assessing the quality of welded joints based on arc images during welding was confirmed.

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Li, Wenhang, Yunhong Ji, Jing Wu, and Jiayou Wang. "A modified welding image feature extraction algorithm for rotating arc narrow gap MAG welding." Industrial Robot: An International Journal 42, no. 3 (May 18, 2015): 222–27. http://dx.doi.org/10.1108/ir-11-2014-0407.

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Purpose The purpose of this paper is to provide a modified welding image feature extraction algorithm for rotating arc narrow gap metal active-gas welding (MAG) welding, which is significant for improving the accuracy and reliability of the welding process. Design/methodology/approach An infrared charge-coupled device (CCD) camera was utilized to obtain the welding image by passive vision. The left/right arc position was used as a triggering signal to capture the image when the arc is approaching left/right sidewall. Comparing with the conventional method, the authors’ sidewall detection method reduces the interference from arc; the median filter removes the welding spatter; and the size of the arc area was verified to reduce the reflection from welding pool. In addition, the frame loss was also considered in the authors’ method. Findings The modified welding image feature extraction method improves the accuracy and reliability of sidewall edge and arc position detection. Practical implications The algorithm can be applied to welding seam tracking and penetration control in rotating or swing arc narrow gap welding. Originality/value The modified welding image feature extraction method is robust to typical interference and, thus, can improve the accuracy and reliability of the detection of sidewall edge and arc position.

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Ekwe, D. U., and O. E. Isaac. "Survey of Welding Voltage from Welding Current and Arc Length in SMAW Process." IIARD INTERNATIONAL JOURNAL OF ECONOMICS AND BUSINESS MANAGEMENT 8, no. 3 (August 11, 2022): 9–16. http://dx.doi.org/10.56201/ijebm.v8.no3.2022.pg9.16.

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The relationship between welding voltage, welding current and arc length was investigated in this study. Shielded metal arc welding (SMAW) process was used to weld API 5L X65 line pipes at welding current of 80 – 200A and arc length of 1.5 – 3.5mm. First and second order polynomial equation and Amson models were also used to study the welding voltage as a function of current and arc length. The results revealed that increase in current and arc length lead to corresponding increase in voltage. The welding voltage increased from 19.48 – 23.82V at constant arc length of 1.5mm and from 22.25 – 26.77V at 3.5mm arc length, as current increased from 80 – 200A. Voltage increase was more influenced by increase in arc length than increase in current. Welding currents between 140A and 180A and arc length between 2mm and 3mm are recommended for optimum quality welded joints. The analysis of the model performance showed that there was high correlation between the predicted and the measured welding voltage values (R2 up to 99%). However, the predictions from the second-order polynomial model slightly edged the Amson and the first-order polynomial models. Therefore, using either of these models could be helpful in making a decision on the range of welding input parameters that can be used to optimise welding quality and productivity in the SMAW process

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Hafez, Khalid M., Mohamed Mosalam Ghanem, Hamed A. Abdel-Aleem, and Naglaa Fathy. "Effect of Welding Processes on Mechanical and Microstructural Characteristics of DP780 Steel Welded Joints for the Automotive Industry." Key Engineering Materials 835 (March 2020): 101–7. http://dx.doi.org/10.4028/www.scientific.net/kem.835.101.

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Arc welding processes are widely used in the automotive industry among other welding processes. Consequently, laser welding technology is being used instead of arc welding due to the rapid heating and cooling characteristics of the laser. In this study, empirical investigations and comparative study are held out on the arc and laser beam welded joints of DP780 dual-phase steel. Accordingly, weld joint microstructures, hardness distribution, and fatigue properties cross the butt-welded joints were investigated. The results showed that laser beam welding produces narrow fusion and heat-affected zones while gas metal arc welding produced wide welds with incomplete penetration. It was observed that the microstructure of the laser joint weld metal has mainly lath martensite in the ferritic matrix, while microstructure of gas metal arc weld metal relies upon filler type. Heat-affected zone in DP780 steel exhibit hardness softening in both laser beam welding and gas metal arc welding due to martensite tempering, a wider softening region was clearly observed in heat-affected zone welded by gas metal arc welding than laser beam welding. Generally, fatigue ratio, fatigue limit and fatigue life of the welded joints were improved by using laser welding.

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Gou, Weijie, and Lihong Wang. "Test and Analysis of TIG-MIG Hybrid Welding Are." Journal of Physics: Conference Series 2152, no. 1 (January 1, 2022): 012031. http://dx.doi.org/10.1088/1742-6596/2152/1/012031.

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Abstract A high-speed camera is used to observe the arc starting and arc stabilization process of the TIG-MIG hybrid welding system. Paschen’s law is used to analyze the path of TIG welding arc breakdown under the condition of the conductive channel provided by the MIG welding arc, and the arc starting process of the double arc hybrid welding is determined. The study found that when the electrode spacing is less than 8.5 mm, two molten pools can form a common molten pool after arc initiation of MIG welding; when the spacing is 10 mm, the two molten pools after arc initiation form a “8” shape; When the distance is 12 mm, there is a low temperature zone between the two arcs, which is separated.

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Wang, Lei, Jisen Qiao, and Jianhong Chen. "The Mechanism of Effect of Flux Bands on The Arc Behavior in Flux Bands Constricting Arc Welding Process." Materials 13, no. 7 (April 2, 2020): 1652. http://dx.doi.org/10.3390/ma13071652.

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A new welding method, flux bands constricting arc (FBCA) welding, is proposed to compensate for the shortage of insufficient weld width of laser welding T-joints in high steel sandwich panels. The arc behavior (arc burning position, arc shape, arc heat, and arc stability) before and after sticking the flux bands (GMAW and FBCA welding) to the ultra-narrow gap groove was tested. Results indicate that flux bands have solid-wall constricting effect (SWCE) and thermo-compression effect (TCE) on the arc and self-producing slag and gas function in FBCA welding. In ultra-narrow gap groove, the arc burning position climbing up phenomenon (APCP) occurs without flux bands. The SWCE of flux bands on the arc effectively suppresses the APCP because of the insulation of flux bands. In the FBCA welding process, the effective heating area of the arc is increased by at least 5 mm2 compared with that in GMAW. When the groove gap decreases, flux bands not only compress the arc from an inverted bell shape to a rectangular shape, but also make the 660 °C isotherm on the core-plate to increase from 3 mm to 8 mm. In the end, the proportion of unstable arc burning time is reduced by 86.85%, the fluctuation of arc voltage and welding current are also significantly reduced by the flux bands because of their SWCE on the arc.

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Song, Moo-Keun, Jong-Do Kim, and Jae-Hwan Oh. "Comparison on welding mode characteristics of arc heat source for heat input control in hybrid welding of aluminum alloy." Modern Physics Letters B 29, no. 06n07 (March 20, 2015): 1540016. http://dx.doi.org/10.1142/s0217984915400163.

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Presently in shipbuilding, transportation and aerospace industries, the potential to apply welding using laser and laser-arc hybrid heat sources is widely under research. This study has the purpose of comparing the weldability depending on the arc mode by varying the welding modes of arc heat sources in applying laser-arc hybrid welding to aluminum alloy and of implementing efficient hybrid welding while controlling heat input. In the experimental study, we found that hybrid welding using CMT mode produced deeper penetration and sounder bead surface than those characteristics produced during only laser welding, with less heat input compared to that required in pulsed arc mode.

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Katayama, Seiji. "Special Issue on Progress in Welding Processes." International Journal of Automation Technology 7, no. 1 (January 5, 2013): 87. http://dx.doi.org/10.20965/ijat.2013.p0087.

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Welding is one of the most versatile joining methods for constructing products and structures in nearly all industrial fields. Arc has been widely used as a cheap heat source for welding since carbon arc fusion welding was first applied to join Pb plates in about 1880. New welding technologies have been developed according to social needs or changes since 1960. Therefore, half-automated welding, automatic welding and highefficient welding have been developed for saving man-power and afterward full automation. First, tandem one-side SAW (submerged arc welding), high-speed rotational arc, high-heat input SAW, tandem wire MAG, etc. have been introduced as highly efficient welding processes. On the other hand, as gas-shielding arc welding processes, CO2 gas, MAG, man-power saving automatic welding, the use of a flux-cored wire, AC MIG, MIG with two wires, laser-arc hybrid welding, CMT process have been developed and most widely employed in the industries in conjunction with an advance in the welding heat sources from thyristor to inverter and nowadays digital inverter. Furthermore, robotization has been developed from spot welding robot to squire robot, multi-axes GAM robot, mobile robot, portable many-axes robot and 7 axes robot together with the development in welding sensors such as probe sensor, one-touch sensor, magnetic sensor, arc sensor, laser-slit light sensor, stereo CCD, etc. Recently, novel arc sources are not developed, but deep weld penetration and geometry are controllably obtained in TIG welding by active flux pasted on the plate surface, good use of an active gas and narrow oxidation treatment. Clean MIG process for steels is also developed by use of a unique solid-wire of double layers with different melting temperatures, and different hybrid heat sources of plasma and GMA or laser and MIG. Hybrid welding processes with CO2 laser and MAG, disk laser and MAG, fiber laser and CO2 arc or MAG has recently been applied in the shipbuilding industry. I thank the authors for their generous cooperation to the publication of new development in the welding technologies.

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Luo, Hui, Feng Qi Yang, Peng Liu, and Yu Shuang Huo. "Influence of Surface Remelting Process on Corrosion Resistance of Welding Joints for SUS304 Stainless Steel by Electrode Arc Welding." Applied Mechanics and Materials 217-219 (November 2012): 1983–86. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1983.

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The electrochemical corrosion tests of SUS304 stainless steel joint which was welded by electrode arc welding show that. The welding energy has obviously effect upon corrosion resistance of welding joints. The welding current directly influences the corrosion resistance of heat affected zone (HAZ) of welding joint. The Surface of joints was remelted by the micro-plasma arc and argon arc process. It is suggested that corrosion resistance of welding joint was improved obviously after remelting. The main reasons for improving the corrosion resistance of welding joint may be that grain refined, chromium oxidation film formed and elements diffusion inhibited by arc-remelting process.

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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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Zulkifli, Abdul Nasir, Farhatun Najwa Rusli, Mohd Nizam Saad, Yussalita Md. Yussop, and Mohd Fitri Yusoff. "ARC WELDING EDUCATION: MOBILE ARC WELDING LEARNING APP TO IMPROVE STUDENTS’ MOTIVATION." Journal of Creative Industry and Sustainable Culture 1 (October 31, 2022): 51–69. http://dx.doi.org/10.32890/jcisc2022.1.4.

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All Mechanical Engineering students studying in Malaysian polytechnics have to take welding as a core subject. They will learn the basic theory in the classroom and proceed with instruction-based training in the workshop. With limited learning time in the classroom, students find it difficult to follow and understand everything that has been taught. Furthermore, welding is dangerous for beginners and the environment is hazardous to health. If students are not well prepared before going to the workshop, this might jeopardize themselves as well as the welding equipment. To help students be better prepared, a supplementary learning method is needed and the Mobile Arc Welding app has been introduced to them. A study has been conducted to determine whether the app contributes to the students’ learning process. The study was carried out among 67 mechanical engineering students of a polytechnic. The analysis involved Pearson Correlation and Regression in determining the impact of engagement, ease of use, learnability, satisfaction and usefulness on students’ motivation through the use of a welding app. The findings show that there are empirically positive and substantial correlations between motivation and engagement, satisfaction, and usefulness. However, there was no evidence of a positive and significant relationship between ease of use and learnability and welding learning motivation.

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Si-min, Chen, Zhong Qi-ming, Zeng Zhi-jing, and Wang Zhen-min. "Composite control of the SiC arc welding power source based on the expert system and neuron PID." E3S Web of Conferences 233 (2021): 04001. http://dx.doi.org/10.1051/e3sconf/202123304001.

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A third generation wide-band-gap SiC semiconductor device is used in the SiC arc welding power source, which has a higher inverter frequency and greatly improves the dynamic characteristics of the arc welding power source, providing opportunities for control algorithm optimization. A composite control method of the arc welding power source combining the expert system and single neuron Proportional-Integral-Derivative (PID) is proposed in this paper, aimed at the fact that the proportional cofficient of neuron PID can hardly be adapted to rapid welding current changes. The SiC arc welding power source is taken as the plant of study in this paper. A mathematical model of the arc welding power source-arc system is established, and the controller of the arc welding power source based on the neuron PID and corresponding expert rules are defined to adjust the proportional coefficient of neuron PID Finally, the neuron PID controller (SNC) and the composite controller based on the expert system and neuron PID (ESNC) are simulated and verified. The results show that compared with the neuron PID algorithm, this method can adjust the proportional neuron PID coefficient in real time according to the welding current and has a better adaptive ability and superior tracking performance for arc welding power source control.

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Krampit, N. Yu, M. A. Krampit, and L. N. Zubenko. "Definition of Peak Value of Welding Current at Pulsed Arc Welding." Applied Mechanics and Materials 682 (October 2014): 397–400. http://dx.doi.org/10.4028/www.scientific.net/amm.682.397.

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Pulsed arc welding is one of the ways to control the process of an electrode metal drop transfer actively. Conditions of an electrode metal directional transfer during a pulse-arc welding were investigated, and provided the basis for welding current peak value calculation. Theoretical conditions of an electrode metal drop detachment during a pulse-arc carbon dioxide welding were proved experimentally.

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Katayama, Seiji, Yasuaki Naito, Satoru Uchiumi, and Masami Mizutani. "Laser-Arc Hybrid Welding." Solid State Phenomena 127 (September 2007): 295–300. http://dx.doi.org/10.4028/www.scientific.net/ssp.127.295.

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Hybrid welding of stainless steels or aluminum alloys was performed using the heat sources of YAG laser and TIG, or YAG laser and MIG, respectively. The effects of welding conditions and melt flows on penetration depth, weld bead geometry and bubble/porosity formation were investigated with X-ray transmission real-time observation method. A great effect of melt flows on penetration depth and weld geometry was consequently confirmed. Concerning porosity suppression in YAG-TIG hybrid welding of stainless steel, no bubble generation was attributed to no porosity formation. On the other hand, it was revealed that the disappearance of bubbles from the concave molten pool surface played an important role of no porosity in YAG laser-MIG hybrid welding of aluminum alloys.

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Batool, Sadaf, Mushtaq Khan, Syed Husain Imran Jaffery, Ashfaq Khan, Aamir Mubashar, Liaqat Ali, Nawar Khan, and Muhammad Nabeel Anwar. "Analysis of weld characteristics of micro-plasma arc welding and tungsten inert gas welding of thin stainless steel (304L) sheet." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 230, no. 6 (August 3, 2016): 1005–17. http://dx.doi.org/10.1177/1464420715592438.

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This research work focuses on comparison of the weld geometry, distortion, microstructure and mechanical properties of thin SS 304 L sheets (0.8 mm thickness) welded using micro-plasma arc welding and tungsten inert gas welding process. Initial experiments were performed to identify suitable processing parameters for micro-plasma arc welding and tungsten inert gas welding processes. Microstructures of welds were analysed using scanning electron microscopy, X-ray diffraction and energy dispersive spectroscopy. The results indicate that the joint produced by micro-plasma arc welding exhibited higher tensile strength, higher ductility, smaller dendrite size and a narrow heat affected zone. Samples welded by micro-plasma arc welding process had lower distortion as compared to that welded by tungsten inert gas process. Micro-plasma arc welding was shown to be the suitable process for welding of thin 304 L sheets owing to its higher welding speed and better weld properties as compared to the tungsten inert gas welding process.

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Yang, Li Fang, Huai Liang Fan, and Tian Jiao Zhao. "Design of Protective Device against Welding Arc and Smoke." Key Engineering Materials 450 (November 2010): 39–42. http://dx.doi.org/10.4028/www.scientific.net/kem.450.39.

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Welding smoke and arc are extremely occupational hazards to the operators. A mobile welding protective device is designed for scattered welding operation. In order to protect operators from welding arc injury and collect welding smoke, a novel welding covering is designed for use of purification device. On the other hand, owing to the large amount of welding smoke, the ordinary filtering material is not suitable for welding smoke purification; the metal-cotton is utilized to pre-filter the welding smoke. In the end, the protective device against welding arc and smoke is designed and tested. The device is effective for mobile welding operation.

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Kim, Taewon, Jong Cheol Kim, Yu Hasegawa, and Yasuo Suga. "Welding of AZ31B Magnesium Alloy by YAG Laser/ TIG Arc Hybrid Welding Process." Materials Science Forum 449-452 (March 2004): 417–20. http://dx.doi.org/10.4028/www.scientific.net/msf.449-452.417.

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Recently, magnesium alloy is in the limelight as ECological material with high ability of recycling and lightweight property. Especially, because of outstanding properties as a structural material, the magnesium alloy is in great demand. Under these circumstances, the technical researches and developments of welding process for magnesium alloy welding have great significance to expand industrial application of magnesium. In magnesium alloy welding, arc welding process is generally used. However, heat input by the welding arc affects the magnesium alloy plates, and as the result it makes wide heat affected zone and large distortion of the welded joint. As one of the possible means to improve quality of the welded joint, application of laser welding process may be recommended. However, the low boiling point of magnesium generates some weld defects, such as porosity and solidification cracking. Furthermore, the small laser beam diameter is very sensitive to edge preparation in butt joint. Accordingly, application of laser/ arc hybrid welding process to magnesium alloy welding was proposed. The laser/ arc hybrid welding process is a new process combining the laser beam and the arc as welding heat source. The laser beam and arc influence and assist one another. By application of hybrid welding, synergistic effects are achievable, and disadvantage of the respective processes can be compensated. In this study, welding of AZ31B magnesium alloy thin plates using YAG laser/ TIG arc hybrid welding process was investigated. In order to confirm the properties of the welded joints, tensile testing was performed.

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Samardžić, Ivan, Zvonimir Kolumbić, and Štefanija Klarić. "Welding parameter monitoring during stud arc welding." Pollack Periodica 4, no. 1 (April 2009): 29–39. http://dx.doi.org/10.1556/pollack.4.2009.1.4.

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YAMAMOTO, Hideyuki. "Arc Welding Phenomena and Welding Power Sources." Journal of the Japan Welding Society 66, no. 8 (1997): 615–29. http://dx.doi.org/10.2207/qjjws1943.66.615.

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Zhernosekov, Anatolii, Viktor Fedorchuk, and Oleh Novomlynets. "REGULATION OF CURRENT PULSE PARAMETERS DURING MIG WELDING OF ALUMINUM ALLOYS." Technical Sciences and Technologies, no. 2(28) (2022): 31–37. http://dx.doi.org/10.25140/2411-5363-2022-2(28)-31-37.

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Pulse-arc welding with a fusible electrode in inert gases occupies one of the leading places among arc methods in the manufacturing of structures from aluminum alloys of responsible purpose. Drops of molten metal of the electrode wire, with the correct selection of pulse parameters, have a small diameter, they do not deform, the evaporation from their surface is minimal and the transfer of alloying elements from the electrode wire to the welding bath is maximal. The problem of the influence of the pulses shape and their parameters on welds and connections during arc welding with a fusible electrode remains unstudied. Therefore, the research on improving the efficiency of pulse-arc welding through the creation of new equipment with enhanced capabilities of management of process parameters is relevant.The development of modern electric welding equipment, including the sources of power for the welding electrode arc, will allow increasing significantly the efficiency of the process. The peculiarity of the use of such equipment is explained by the emergence of many combined and hybrid welding technologies using a pulsed welding electrode arc, for example, laser-arc, plasma-arc. The purpose of the research is to expand the technological regimes of pulse-arc welding with a fusible electrode in inert gases of aluminum alloys by controlling the shape and parameters of the current pulses.Experimental studies on the control of current pulse parameters (duration, frequency, amplitude) and its shape during welding of aluminum alloys AMg6, 1201 and 2219 in argon have been conducted. The obtained dependencies can be used for the development of synergistic equipment for pulse-arc processes.Such equipment will allow expanding the ranges of adjustment of pulse parameters when welding a wide range of aluminum alloys of different alloying systems in different spatial positions and will allow using it in hybrid technologies.

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Journal articles on the topic 'Arc welding'

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