Journal articles: 'MAG welding'

1

MITA, Tsuneo. "Pulse MAG Welding." Journal of the Japan Welding Society 67, no. 4 (1998): 316–20. http://dx.doi.org/10.2207/qjjws1943.67.316.

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Meng, Ling Dong, Qing Zhang, Yue Lan Di, and Wei Shen. "Research and Development of Precision MIG/MAG Welding." Advanced Materials Research 1095 (March 2015): 824–27. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.824.

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MIG/MAG welding is a precision technology of high quality and high efficiency, and widely used. In this paper, the development of MIG/MAG welding was introduced, also the defect was analyzed. The principle and characteristic of T.I.M.E welding, Tandem MIG/MAG welding and wave controlled MIG/MAG welding was discussed. Then the further development trend of precision MIG/MAG welding was pointed out, providing a theory guide for using in equipped maintenance.

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Wang, Xu Ming, Wen Zhang, and Ying Wang. "The Influence of Longitudinal Magnetic Field on DCEN MAG Welding." Applied Mechanics and Materials 217-219 (November 2012): 1843–46. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1843.

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This paper introduces the dynamic process of droplet transfer of DCEN MAG welding applied outside longitudinal magnetic field, and analyses the influence law of magnetic parameters on welding arc, droplet transfer behaviour, wire melting coefficient and weld formation. The feasibility of application of longitudinal magnetic field to DCEN MAG welding is established. We compared DCEN MAG welding with DCEP in order to further perfect rotating MAG welding.

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Mihăilescu, Dănuţ, Marius Cornel Gheonea, and Bogdan Georgescu. "Determining the Coefficients of Fusion and of Weld Deposition at Mechanized Mag-C Welding with Solid Wire and Cored Wires." Applied Mechanics and Materials 657 (October 2014): 301–5. http://dx.doi.org/10.4028/www.scientific.net/amm.657.301.

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In the case of the MAG welding of carbon and low-alloyed steels wires or hollow wires with (rutilic or basic) flux with metallic powder or self-protection are used. In indoors weldings huge quantities of smoke, gases, dust and particles in suspension, etc. get accumulated. These noxious substances produced during the welding process may severely affect the welders health. To improve the welders working conditions, on an international scale, the following are used: welding masks with self-obscurazation and air control; noxious substances vacuum cleaners fitted with filters; MAG welding pistols with gase and smoke absorbing devices. For the improvement of the welders working conditions, producers of welding materials invented hollow wires with (rutilic flux or with metallic powder) with a smoke-reduced emission [1,2,3,4,5].

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Zhao, Guo Ji, Qian Luo, Xiang Jie Wang, and Jian Luo. "Numerical Simulation and Experimental Research on MAG Surfacing Deposited with Electro-Magnetic Stirring Controlling." Advanced Materials Research 102-104 (March 2010): 407–11. http://dx.doi.org/10.4028/www.scientific.net/amr.102-104.407.

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Numerical simulation and deposited experiment of MAG welding are carried out on the conditions of Electro-Magnetic Stirring (EMS) in this paper. Based on the research of EMS welding arc action, a simple EMS-MAG welding Gaussian distribution model using whole heat flux density is established, which MAG welding arc and droplet transfer are regarded as one integrated system. The important additional magnetic field parameter in EMS-MAG surfacing deposited welding is considered in this model. The computer-aided arc measurement system is used to analyze the effects of additional magnetic field in MAG welding. Effects of excitation current on welding penetration and width are analyzed by deposited experiments. Many deposited experiments are used to adjust model parameters and verify the simulation results. By defining key parameter and optimizing the model on the basis of experimental data, it can improve the simulation accuracy effectively. The results show that the established Gaussian distribution model can be used to simulate EMS-MAG welding process.

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Rochalski, Damian, Dariusz Golański, and Jacek Szulc. "Verification of the welding heat source models in arc welding and hybrid plasma-MAG welding processes based on temperature field tests." Welding Technology Review 92, no. 5 (August 3, 2020): 25–35. http://dx.doi.org/10.26628/wtr.v92i5.1117.

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Hybrid welding processes belong to a new group of welding varieties that most often combine two classic welding methods, such as laser welding with MIG/MAG welding or plasma welding with MAG welding. Modeling of welding stresses in this type of welding requires the definition of a new type of heat source model that combines a concentrated stream of energy with a classic heat source, which occurs in an electric arc. The paper presents the results of temperature field modeling in conventional MAG welding and hybrid plasma-MAG welding. In the first case, the heat source model described by Goldak was used, and in the second case, the Goldak model was combined with the developed rectangular heat source model with a homogeneous distribution. The temperature distributions obtained from the simulations were verified by spot temperature measurements during welding with thermocouples. A fairly good agreement of the numerical analysis results with the temperature measurements for MAG welding was obtained, while in the case of hybrid welding the discrepancies between the modeling and temperature measurements were greater. The results were discussed, indicating potential causes and factors influencing the obtained test results.

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Iovanas, Daniela Maria, Cosmin Toma, and Radu Iovanas. "Research on the Use of Robotized Tandem MAG Welding in Steel Plates Destined for the Manufacture of Pipelines." Advanced Materials Research 1138 (July 2016): 133–38. http://dx.doi.org/10.4028/www.scientific.net/amr.1138.133.

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The performed research focuses on the complete replacement of the pipeline manufacturing process consisting in welding on SAW+MIG / MAG generators with the robotized Tandem MIG / MAG welding procedure, with low energy consumption.The Tandem MAG procedure was experimented on X52 MS steel plates destined for the manufacture of pipelines, measuring 400x150x12 mm, with Y-joints (30o).The welded joints were executed horizontally and unilaterally, with flux bed support, 3 welding seams, using for filler material two wires of the same quality, EN ISO 14341: G 42 4 M G3Si1 (Filcord C), measuring 1.2 mm in diameter, and shielding gas EN ISO 14175 (CORGON 18).The entire technological welding process was carried out in fully robotized, laboratory conditions, using the QIROX -315 welding robot, fitted with Tandem MIG/MAG welding equipment, type QUINTO-GLC 603.The welding seams were executed with the same Tandem MAG welding head, with two wires, taking advantage of the possibility to rotate the welding head so as to obtain welding seams with the wires either positioned one after the other (tandem), or transversally (perpendicular to the welding direction), obtaining, by correlation with the welding speed, optimal linear energies, implicitly, seams of various widths and penetrations.The results of the tests concerning the characterization of the obtained welded joints corresponded to the mechanical – metallographic tests, falling within the ranges provided by the applicable standards.The welding parameters used in the robotized Tandem MAG procedure may lead to remarkable advantages concerning the use of energy and filler metal. Thus, linear energies are about 40% - 45% smaller than in the case of the classical SAW+MIG / MAG process, with positive effects on the mechanical and metallographic characteristics of the welded joints, leading to significant reductions in energy consumption. Furthermore, the use of filler materials (wire, shielding gas) decreases by 10% - 15% as compared to the classical SAW+MIG / MAG process, leading, implicitly, to lower costs.As a consequence of the obtained results, MAG Tandem welding procedure may become an alternative to SAW submerged arc welding and combined SAW and MIG / MAG welding and a classical reference method for the manufacture of pipelines

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Tsuji, Y., T. Yamamoto, F. Miyasaka, and T. Oji. "Mathematical modelling of MAG welding." Welding International 15, no. 10 (January 2001): 783–88. http://dx.doi.org/10.1080/09507110109549442.

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Yamada, Tadaaki, and Minoru Kobayashi. "Blowholes on Pulsed MAG welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 3, no. 4 (1985): 822–30. http://dx.doi.org/10.2207/qjjws.3.822.

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Zhang, Tian Hui, Wen Min Liu, Ren Ping Xu, and Bin Xu. "Effect of Welding Method on Weld Defects of ADB610 Steel." Advanced Materials Research 97-101 (March 2010): 818–21. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.818.

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Statistical analysis was carried on weld defects of low carbon bainite ADB610 steel using shielded metal arc welding (SMAW) and mixed active-gas arc welding (MAG). By Pareto diagram analysis, although the ratio of porosity air hole using SMAW is slightly higher than the one using MAG, there is no qualitative difference in ADB610 steel weld defect types between two welding methods. And the crack occurs seldom, which indicates ADB610 steel has lower crack-sensitivity using SMAW and MAG. By histogram analysis and rank test, it can be concluded that there is distinctive difference in defect size between SMAW and MAG, and the average size using SMAW is bigger than the one using MAG. So if possible, MAG is recommended for low carbon bainite ADB610 steel.

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Wang, Xu Ming, Wei Liang, and Su Hong Sun. "The Influence of Rotating Magnetic Field on DCEN MAG Industry Welding Based on Properties of Welding Materials." Advanced Materials Research 675 (March 2013): 148–51. http://dx.doi.org/10.4028/www.scientific.net/amr.675.148.

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This paper introduces that the transverse rotating magnetic filed, of which excitation current and frequency can be altered respectively, is applied to the DCEN (direct current electrode positive) MAG industry welding with the shield gas of (Ar) 98%+ (O2 ) 2%. And its mechanism is researched carefully using high velocity camera.When fixing excitation frequency or excitation current, arc motion behavior, droplet transfer, wire melting coefficient and properties of welding materials are researched. Welding spatter results from arc luminous sphere bouncing up and down. We compared DCEN MAG industry welding with DCEP (direct current electrode negative) in order to further perfect rotating MAG industry welding.

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Toma, Cosmin, Radu Iovanas, and Daniela Maria Iovanas. "Research Regarding the Manufacture of Pipelines through Automatic Tandem MAG Welding on Generators." Advanced Materials Research 1029 (September 2014): 100–105. http://dx.doi.org/10.4028/www.scientific.net/amr.1029.100.

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The manufacture of pipelines is a complex technological process starting with laminates supply, joints cutting-processing, rolling, welding, calibration, control, packing, delivery. As a rule, the technological welding process is achieved by welding on generators through MAG and submerged arc welding, procedures which generally take place completely automatically, affecting the quality and cost of products. Beside a series of advantages, submerged arc welding also has disadvantages; it does not eliminate the operator’s intervention and implies some high linear energies with implications on the mechanical-metallurgical characteristics of the welded joints. In this paper we present the preliminary results of the experiments which have been carried out on welded joints on X52 steel plate, g = 12 mm, through classical MAG welding, with one wire - filler material on the first layer, and the filling beads through tandem MAG welding, with two wires. We should mention that the plates had a V(30°) joint and the welding was executed unilaterally, horizontally, the wire - filler material being of the same quality G42 4 M G3 SI1 ( EN ISO 14341) and diameter (1.2 mm), and EN ISO 14175 protection gas. The entire technological welding process was carried out in laboratory conditions, fully robotized, using a QIROX-315 welding robot fitted with QUINTO-GLC 603-type tandem MAG welding installations, owned by ICDT-PRO-DD C12 “Advanced welding eco-technologies”, belonging to Transylvania University of Braşov.

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13

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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14

Wang, Xu Ming, and Qing Xia Bi. "Study on Arc and Drop Transfer Behaviors of DCEN MAG Welding." Advanced Materials Research 887-888 (February 2014): 1290–93. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.1290.

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By means of the high speed camera, the arc and drop transfer behaviours of direct current electrode negative MAG welding process are researched. The influences of luminous arc ball on the stability of MAG welding process are analyzed. On this basis, the process interval of DCEN MAG welding is determined. And the influences of wire polarity on wire melting coefficient are compared. By using the shield gas 98%Ar + 2%O2, the stable drop transfer manner can be divided into two kinds: dropwise transfer with low current, and streaming transfer with high current.

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15

TSUJI, Yoko, Takeshi YAMAMOTO, Fumikazu MIYASAKA, and Takayoshi OHJI. "A Mathematical Modeling of MAG Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 18, no. 4 (2000): 527–33. http://dx.doi.org/10.2207/qjjws.18.527.

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YAMAMOTO, Takeshi, Yoko TSUJI, Fumikazu MIYASAKA, and Takayoshi OHJI. "A Simulation Model of MAG Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 19, no. 4 (2001): 628–33. http://dx.doi.org/10.2207/qjjws.19.628.

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Shimizu, Hiroyuki, Kazuhiko Itoh, Norio Masaie, Tsuyoshi Kurokawa, and Masao Ushio. "Feedability of Wires during MAG Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 23, no. 2 (2005): 209–19. http://dx.doi.org/10.2207/qjjws.23.209.

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Okubo, K. "Automation of MAG welding (Report 4)." Welding International 16, no. 12 (January 2002): 992–94. http://dx.doi.org/10.1080/09507110209549652.

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Jastrzębski, Ryszard. "Control of MIG/MAG welding machines." Welding International 29, no. 6 (November 7, 2014): 454–56. http://dx.doi.org/10.1080/09507116.2014.937592.

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Santos, Deborah, Thiago Silva Geraldi, and Leonel Dimas de Abreu. "Cold Wire Addition in MAG Welding." International Journal of Advanced Engineering Research and Science 5, no. 8 (2018): 99–100. http://dx.doi.org/10.22161/ijaers.5.8.13.

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Chinakhov, Dmitry A. "Dependence of Silicon and Manganese Content in the Weld Metal on the Welding Current and Method of Gas Shielding." Applied Mechanics and Materials 756 (April 2015): 92–96. http://dx.doi.org/10.4028/www.scientific.net/amm.756.92.

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

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Iovanas, Radu, Cosmin Toma, Daniela Maria Iovanas, Ionut Claudiu Roata, and Viorel Anton. "Research on the Use of the MIG/MAG-Tandem Procedure in Welding X52MS Plates for the Manufacture of Pipelines." Advanced Materials Research 1128 (October 2015): 236–41. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.236.

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The pipelines used for carrying fluids and gas, made of specially designed steels in keeping with their intended uses, are obtained by welding on generator or by spiral welding, in a wide range of diameters (from 350 to 1800 mm) and pipe wall widths (between 6 and 40 mm). At present, the following welding procedures are used: automatic submerged arc welding (with 1 and 2 wires), combined with the unilateral or bilateral MIG/MAG welding procedure, according to plate thickness and edge working method. Ongoing researches focus on improving the end product [1, 2, 3, 4, 5, 6] by replacing the submerged arc welding procedure with other welding procedures which use less energy and have high deposit rates. This paper presents the results obtained by using tandem MAG welding, with two wires (2 x ø1.2 mm), in welding Y joint X52MS steel plates. The welds were carried out using a QUIROX 315 welding robot, with a 2-wire tandem MIG/MAG welding head, supplied by 2 QUINTO-GLC 603 welding sources, equipment found at Research Centre C12, Advanced Welding Eco-Technologies, owned by ICDD - UTBV. The results of the tests (carried out as per the enforceable regulations) concerning the characterisation of the executed welds proved that it is possible to obtain welds with lower energy use and lower material-relates costs and high productivity and quality.

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DING, Xueping. "Welding Stability in Laser+Twin-electrode Pulsed MAG Hybrid Welding." Journal of Mechanical Engineering 48, no. 22 (2012): 52. http://dx.doi.org/10.3901/jme.2012.22.052.

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YAMANE, Satoshi, KATSUMASA Uji, Toru NAKAJIMA, and Hikaru YAMAMOTO. "Application of Switch Back Welding to V Groove MAG Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 28, no. 4 (2010): 408–14. http://dx.doi.org/10.2207/qjjws.28.408.

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Yamane, Satoshi, Katsumasa Uji, Toru Nakajima, and Hikaru Yamamoto. "Application of switch back welding to V groove MAG welding." Welding International 29, no. 2 (March 11, 2013): 103–9. http://dx.doi.org/10.1080/09507116.2012.753253.

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Tušek, Janez. "Kinetics of manganese in MAG/MIG welding with a 18/8/6 wire." Revista de Metalurgia 37, no. 3 (June 30, 2001): 437–44. http://dx.doi.org/10.3989/revmetalm.2001.v37.i3.509.

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Seculin, Radu Cristian, Barna Fazakas, Teodor Machedon Pisu, and Mihai Alin Pop. "Aspects Regarding the Achievement of Vertical Welding Joints." Advanced Materials Research 1128 (October 2015): 254–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.254.

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The vertical MAG welding procedure is a difficult position to be executed because the trend of the molten bath flowing. This article aims to present the achievement of vertical welding joints with a linear device with a radial oscillation system that should achieve automatic vertical welds and the correlation of the welding parameters with the movement of the welding torch in order to obtain these, using the MAG procedure, protective gas M 21 (82% argon + 18% CO2), welding wire SG2, the material of the welded pieces S 355 JR. Samples will be cut from the welded steel plates and they will be characterized from the mechanical point of view (hardness, microstructure and macrostructure).

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Mao, Yun Xian, Meng Qi Yang, Hai Rui Yue, Hui Yang, Z. G. Li, and Ya Zhi Zhang. "Comparison of Stress Filed and Deformation of MAG and TIG for Cr13 Based on Finite Element." Advanced Materials Research 1095 (March 2015): 711–16. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.711.

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This paper took flat butt joint based on Cr13 as a sample, in which TIG and MAG were adopted respectively, and analyzed qualitatively the simulation results of temperature field, stress field and deformation distribution by the finite element analysis software ANSYS. The simulating results indicate that residual transverse press stress plays a dominant role near the beginning and the end of the welding seam, that residual longitudinal pull stress is dominant in the other region of welding seam. The residual stress of MAG is higher than that of TIG. Nevertheless, the deformation of MAG is lower than that of TIG.

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ZHENG, Senmu. "Narrow Gap MAG Welding Using Strip Electrode." Journal of Mechanical Engineering 48, no. 08 (2012): 74. http://dx.doi.org/10.3901/jme.2012.08.074.

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Banasik, Marek, and Michał Urbańczyk. "ser + MAG Hybrid Welding of Various Joints." Biuletyn Instytutu Spawalnictwa, no. 1 (2017): 6–13. http://dx.doi.org/10.17729/ebis.2017.1/1.

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Banasik, Marek, and Michał Urbańczyk. "Laser + MAG Hybrid Welding of T-Joints." Biuletyn Instytutu Spawalnictwa 2017, no. 2 (2017): 17–24. http://dx.doi.org/10.17729/ebis.2017.2/2.

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WAKAMATSU, Tsugio, Hitoshi MATSUI, Fumikazu MIYASAKA, Haruhito AKASHI, and Takayoshi OHJI. "Numerical Modeling of Lap-Joint MAG Welding." QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY 25, no. 3 (2007): 431–35. http://dx.doi.org/10.2207/qjjws.25.431.

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Matthes, Klaus-Jürgen, and Werner Renatus. "Automating the MAG welding of butt joints." Welding International 1, no. 7 (January 1987): 682–85. http://dx.doi.org/10.1080/09507118709453022.

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Suga, T. "Spatter reduction in MAG welding ‐ consumables aspects." Welding International 6, no. 1 (January 1992): 16–19. http://dx.doi.org/10.1080/09507119209548135.

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Krohn, H. "Pulsed arc MAG welding of fillet welds." Welding International 6, no. 1 (January 1992): 59–63. http://dx.doi.org/10.1080/09507119209548147.

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Uzun, A. "The Effect of Welding Speed on the Weld Seam Profile in MAG and TIG/MAG Hybrid Arc Welding." Practical Metallography 54, no. 4 (April 18, 2017): 225–40. http://dx.doi.org/10.3139/147.110423.

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NINOMIYA, Junya, Kazuki ICHIKAWA, Akiyoshi MIYAMOTO, and Yasuo SUGA. "1306 Real-time Visual Monitoring of Welding Process in MAG Welding." Proceedings of Conference of Kanto Branch 2012.18 (2012): 417–18. http://dx.doi.org/10.1299/jsmekanto.2012.18.417.

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Zhang, Zhaodong, Zhimin Luo, and Liming Liu. "Study on Downhill Welding Mild Steel Using Laser-MAG Hybrid Welding." Materials and Manufacturing Processes 27, no. 11 (November 2012): 1178–83. http://dx.doi.org/10.1080/10426914.2011.648687.

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Chinakhov, Dmitry A., A. V. Vorobyev, E. G. Grigorieva, and E. I. Mayorova. "Study of Wind Velocity Impact upon the Quality of Shielding and upon the Thermal Processes under MAG Welding." Applied Mechanics and Materials 770 (June 2015): 253–57. http://dx.doi.org/10.4028/www.scientific.net/amm.770.253.

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In the given paper we consider the impact of wind velocity upon the active shielding gas flow and changes of thermal processes in the MAG welding area. The authors completed numerical simulation of consumable electrode welding under traditional and two-jet gas shielding. It was established that application of two-jet gas shielding for MAG welding increases the hardness of the shielding gas jet and reduces wind-related displacement of thermal fields in the welded item. This ensures more qualitative shielding of the welding area under the windy conditions and uniform heat distribution in the welded item which leads to more homogeneous structure of weld and HAZ metal in comparison to the traditional (one-jet) gas shielding.

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Safta, Voicu Ioan, Dumitru Mnerie, and Gabriela Victoria Mnerie. "Some Peculiarities of MIG-MAG Welding Processes with Concentrated Energies." Key Engineering Materials 890 (June 23, 2021): 3–8. http://dx.doi.org/10.4028/www.scientific.net/kem.890.3.

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Throughout the history of modernization of welding processes, in many cases the research has focused on optimizing the location of energy in the welding area, with the continuous improvement of the quality of welded joints. The welding processes in shielding gas environment with fusible electrode (MIG-MAG) have achieved superior performances regarding the increase of the current density around of the welded joint, simultaneously with the increase of the universality degree of their application. This paper is based on researching the possibilities of concentrating energy in the welding area, seeking to obtain both more favorable energy yields and an increased quality of welded joints. In the paper are shown a some results obtained following a comparative study on 2 welding processes in MIG-MAG protective gas medium, differentiated mainly by the metal drop transfer mode: by spraying (Spray arc), respectively by synergistic transfer (Arc pulsed), applied for corner welding of alloy steel sheets.

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Węgrzyn, T., J. Piwnik, D. Hadryś, and Ł. Wszołek. "Low Alloy Steel Structures After Welding with Micro-Jet Cooling." Archives of Metallurgy and Materials 62, no. 1 (March 1, 2017): 115–18. http://dx.doi.org/10.1515/amm-2017-0015.

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Abstract The paper focuses on low alloy steel after innovate welding method with micro-jet cooling. Weld metal deposit (WMD) was carried out for welding and for MIG and MAG welding with micro-jet cooling. This method is very promising mainly due to the high amount of AF (acicular ferrite) and low amount of MAC (self-tempered martensite, retained austenite, carbide) phases in WMD. That structure corresponds with very good mechanical properties, ie. high impact toughness of welds at low temperature. Micro-jet cooling after welding can find serious application in automotive industry very soon. Until that moment only argon, helium and nitrogen were tested as micro-jet gases. In that paper first time various gas mixtures (gas mixtures Ar-CO2) were tested for micro-jet cooling after welding.

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Gao, Yan Feng, and Jian Hua Xiao. "The Compulsively Short Circuiting Transfer Phenomenon Study in Rotational Arc MAG Welding." Advanced Materials Research 652-654 (January 2013): 2311–14. http://dx.doi.org/10.4028/www.scientific.net/amr.652-654.2311.

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The present paper describes the compulsively short circuiting transfer phenomenon of welding current in rotational arc MAG welding. Based on a previously reported model of spray transfer welding, a mathematical model of the short circuiting transfer of rotational arc welding is proposed. A series of welding experiments had been conducted and it’s results show that short circuiting transfer would take place when the welding gun electrode rotating to the sides of V groove. The relationship between the short circuiting transfer frequency and the arc rotational frequency also had been studied.

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Węgrzyn, T., J. Piwnik, W. Tarasiuk, Z. Stanik, and M. Gabrylewski. "Micro-jet Cooling by Compressed Air after MAG Welding." Archives of Foundry Engineering 16, no. 2 (June 1, 2016): 111–14. http://dx.doi.org/10.1515/afe-2016-0036.

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Abstract The material selected for this investigation was low alloy steel weld metal deposit (WMD) after MAG welding with micro-jet cooling. The present investigation was aimed as the following tasks: analyze impact toughness of WMD in terms of micro-jet cooling parameters. Weld metal deposit (WMD) was first time carried out for MAG welding with micro-jet cooling of compressed air and gas mixture of argon and air. Until that moment only argon, helium and nitrogen and its gas mixture were tested for micro-jet cooling.

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Zhu, Sheng, Fan Jun Meng, and De Ma Ba. "The Remanufacturing System Based on Robot MAG Surfacing." Key Engineering Materials 373-374 (March 2008): 400–403. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.400.

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A remanufacturing system based on robot MAG surfacing has been developed recently. In this paper, the work principle, functions and composition of this system are introduced. A worn metal part to be remanufactured should be preprocessed firstly, and the defective model of the part gained by reversing engineering technology is compared with normal model of the metal part, then the prototyping path layout is carried out combined with MAG welding process, finally the remanufacturing prototyping is implemented. The remanufacturing system is composed of robotic system (as executing machine), 3D laser scanner (as reversing scanning device), digital pulse MAG welding power source (as prototyping equipment), desk computer (as central control unit) and software modules that support various functions. The functions of the remanufacturing system comprise calibration of system, part reversing measurement, data processing, defective model reconstruction, welding remanufacturing prototyping path layout and etc. It is indicated that the exploitation of the remanufacturing system will provide an effective way for the remanufacturing of metal defective parts.

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Huang, Zhi Jun, Lun Ji Hu, Tao Pen, Yu Tao Wang, and Jia He. "Effect of Welding Method on the Hardness of Joint of 600MPa Grade New Generation Steel." Advanced Materials Research 538-541 (June 2012): 1526–31. http://dx.doi.org/10.4028/www.scientific.net/amr.538-541.1526.

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Laser-MAG hybrid, GMAW and SAW welding experiment were carried out for the new low CE 600MPa grade steel, and hardness survey on the welded joints was performed. Laser-MAG hybrid welding has the highest speed with the least filling weld metal, and its joint exhibits almost no softening with higher harness in weld than base metal. SAW welding has high efficiency but most significant softening effect on the HAZ. For SAW, on the HAZ 4 ~ 5 mm apart from the fusion line peak hardness exists. For GMAW, on the HAZ about 2mm away from the fusion line a softened zone appears, but the softening degree is lower than for SAW. The results showed that the hardness of the welded joint of this type of steel seems much subjected to the welding heat input.

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Chinakhov, Dmitry A., S. A. Solodsky, P. V. Rodionov, and Volodymyr N. Sydorets. "Energy Parameters of Weld Formation Process in MIG-MAG Welding." Materials Science Forum 927 (July 2018): 99–105. http://dx.doi.org/10.4028/www.scientific.net/msf.927.99.

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The article presents results of an experimental study and simulation of the effect of welding arc energy characteristics on the nature of electrode metal transfer in MIG-MAG welding. Based on the research results, a method has been developed for determining the coefficient of welding arc plasma flow pressure. The method makes it possible to take into account the dependence of the electrode metal transfer pattern and plasma flow pressure on geometrical dimensions of a welded joint.

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Huang, Jian, Friedrich Wilhelm Bach, and D. Windelberg. "Numerical Modeling of High Power MAG Welding on the Plate." Materials Science Forum 575-578 (April 2008): 757–62. http://dx.doi.org/10.4028/www.scientific.net/msf.575-578.757.

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In the case of welding of T-joints in a special structure, the joining is realized through a total penetration of deck plates. For the deck plate’s thickness over 6 mm, high power MAG welding process should be applied. To help experimental optimizing of this welding technology, a 3D quasi-stationary numerical model was established to predict the penetration and weld form of the high power MAG welding on a thick plate. In the analysis a new volumetric heat source model was put forward which considers the heat directly from the arc und that from transferred droplets separately. Because the weld pool surface under the arc was strongly pressed, the droplet heat source in the model was located under the workpiece surface. The size of the droplet heat source model was determined on the base of physical principles and available experimental data. Using a commercial finite element software the weld form inclusive penetration under different welding parameters was then simulated. Through comparison with the experimental results the presented FE-model was verified.

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Węgrzyn, T. "Gas Mixtures for Welding with Micro-Jet Cooling." Archives of Metallurgy and Materials 60, no. 1 (April 1, 2015): 107–10. http://dx.doi.org/10.1515/amm-2015-0017.

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AbstractWelding with micro-jet cooling after was tested only for MIG and MAG processes. For micro-jet gases was tested only argon, helium and nitrogen. A paper presents a piece of information about gas mixtures for micro-jet cooling after in welding. There are put down information about gas mixtures that could be chosen both for MAG welding and for micro-jet process. There were given main information about influence of various micro-jet gas mixtures on metallographic structure of steel welds. Mechanical properties of weld was presented in terms of various gas mixtures selection for micro-jet cooling.

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Burcă, Mircea, Radu Cristian Seculin, and Daniel Țunea. "The Technological Comparative Analysis between the Vertical MAG Welding with Solid Wire and with Cored Wire." Advanced Materials Research 1128 (October 2015): 199–208. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.199.

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The vertical welding is generally considered difficult because of the danger of the flow of the melting bath and the melted slag under the action of gravity. In the case of the MIG/MAG welding process, the technological measurements that are being regarded in the ascending and descending of the vertical welding refer to: the use of transfer modes through short circuit and pulsed current, the use of core wires instead of solid wires, the crossing from the semi-mechanized to automatic or robotical welding, that allows the use of complex radial oscillation systems, that assure a good control of the metal bath. The paper wants to make a comparative technological and economical analysis between the vertical ascendent MAG welding using solid wire or core wire. The advantages that are being presented are for the use of the core wire with a rutilic core for the vertical, ascendent welding from a technological, qualitative and economical point of view in the mechanical corner welding process of a 10 mm thickness steel plates.

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Černý, Michal, Petr Dostál, Pavel Mazal, and Michal Šustr. "Verification of the Quality of the Weld When Utilising the MAG/CO2 Method." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 64, no. 1 (2016): 31–42. http://dx.doi.org/10.11118/actaun201664010031.

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In contribution there is described the process of welding by using MAG/CO2 method, mechanical (post fact) and nondestructivein situ) measurement including the discussion of results. The materials of various welding have been used for test. According to ČSN 420002 steel with mark 11 373 has been chosen as a material with guaranteed welding and steel with mark 19 312 has been chosen as a material with hard welding. The sheets with dimensions 30×5×250 mm have been used at welding. The source activity having affect in process of welding is caught on AE records. It is described as per affirmatived forms of individual hits and overshoots at active levels directly into obtained records. The discussion links the findings from visual monitoring of mechanical tests, metallographic and factual monitoring even the acoustic tests. In the field of welding verification stated by producer of steel semifinished products the difference between material with guaranteed welding and material with hard welding by using AE method has been confirmed.

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Journal articles on the topic 'MAG welding'

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