High speed tandem gas tungsten arc welding process of thin stainless steel plate

Qin, Guoliang; Meng, Xiangmeng; Fu, Banglong

doi:10.1016/j.jmatprotec.2015.01.011

Cited by 32 publications

(16 citation statements)

References 4 publications

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“…The molten metal flows backward behind both leading and trailing arcs with a maximum velocity of 1.04 m/s. Previous studies proposed that a "pull-push" flow pattern defined as a backward molten metal flow after the leading arc and a forward molten metal flow before the trailing arc existed in a high speed tandem TIG weld pool [8,16]. This flow pattern can also be observed in a tandem/twin MIG weld pool [27,28], a TIG-MIG weld pool [29] and a hybrid plasma-MIG pool [30].…”

Section: Equipment Development and Welding Proceduresmentioning

confidence: 97%

“…In order to improve the welding efficiency and quality, a high speed tandem TIG welding process was developed to successfully weld titanium plates in our previous study [7], and is adopted to manufacture titanium welded tubes in this study. In this high efficient welding process, a higher current leading arc aimed to obtain deep penetration, and a lower current trailing arc heated the trailing part of the weld pool, and suppressed the strong backward molten metal flow [8].…”

Section: Introductionmentioning

confidence: 99%

“…As the size of a twin/tandem TIG arc increases, the radiation cooling of the arc column also becomes stronger. Qin et.al [8] and Jiang et.al [16] proposed that an obvious "pull-push" flow pattern defined as backward and forward molten metal flows on the top weld pool surface between two arcs existed in a high speed tandem TIG welding process. This "pull-push" flow pattern might cause more sufficient energy convection, such that the weld cooling rate in a high speed tandem TIG welding process was much higher than that in a TIG welding process.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation and Industrial Application of High Speed Tandem TIG Welding

Huang

Kong

et al. 2021

Preprint

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Self-developed high speed tandem TIG welding equipment were adopted to manufacture titanium welded tubes with high efficiency and high quality. The joint made by this high efficient welding process met Chinese standard requirements. A coupled electrode, arc and weld pool numerical model was also developed to investigate temperature and velocity distributions, and energy propagation of this welding process. The numerical results showed that the Marangoni stress was much higher than the arc shear stress, and was mainly positive after leading and trailing arcs in the x and y directions, so the molten metal flowed backward on the top weld pool surface. Previous studies proposed that a “pull-push” flow pattern defined as a backward molten metal flow after the leading arc and a forward molten metal flow before the trailing arc existed on the top weld pool surface in tandem arc welding processes, while it was not observed in this case. The calculated arc efficiency of the high speed tandem TIG welding was about 79.8%.

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Section: Equipment Development and Welding Proceduresmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation and Industrial Application of High Speed Tandem TIG Welding

Huang

Kong

et al. 2021

Preprint

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“…AUGUST 2019 / WELDING JOURNAL 223-s ple time for increase in interdendrite spacing, and correspondingly, the dendrites grew farther into the top of the molten pool (Refs. 17,35). The average grain size in the weld center of the single GTA joint was 12.4 m, whereas that of the tandem GTA joint was 14.0 m and that of tandem GTA-P joint was 13.6 m.…”

Section: Welding Researchmentioning

confidence: 99%

High-Speed Tandem Pulsed GTAW of Thin Stainless Steel Plate

2019

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A novel high-speed welding process with tandem pulsed gas tungsten arcs, which employed two pulse arcs with a 180-deg phase to regulate the behavior of the weld pool and obtain a high-quality weld bead with low welding heat input, was proposed. The effects of pulse welding current parameters on the weld appearance were studied through a statistical design of experiment. The welding speed of a 1.2-mm-thick 304 austenite stainless steel plate can reach up to 3.0 m/min without sacrificing weld appearance quality. The grain structure, mechanical properties, and heat input of tandem pulsed gas tungsten arc welding (GTAW-P) were analyzed and compared with those of single and tandem GTAW. Good mechanical properties of the welded joint were obtained by tandem GTAW-P. Compared with the single and tandem GTAW, the heat input of tandem GTAW-P was decreased by 17.5 and 14.5%, respectively. The main arc at pulse peak obtained sufficient penetration, and the assisting arc at pulse background reduced the unnecessary heat input. When the main arc reached pulse background, the assisting arc at pulse peak heated the trailing region of the molten pool continuously to ensure reflow of the metal and suppressed the generation of weld defects.

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“…Besides, the two power supplies can output the reverse-phase pulse current through the pulse synergic control, which 1 realized good control of arcs to decrease the interference between two arcs [6][7][8]. One of the most widely used in the shipbuilding industry was tandem arc welding [9][10][11], which greatly increased the deposition rate as well as the welding speed on the premise of realizing a stable metal transfer. In consideration of further increasing the deposition rate or welding speed by adding the third wire, advanced 3-electrode MAG welding [12,13] and integrated cold wire (ICE TM ) submerged arc welding (SAW) [14] have been successively developed.…”

Section: Introductionmentioning

confidence: 99%

Arc characteristics and metal transfer behavior of twin-arc integrated cold wire hybrid welding

Xiang

Wei

2016

Int J Adv Manuf Technol

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Twin-wire arc served as a high-efficient technology has been fully developed and widely used in the manufacturing industry. In order to further increase welding deposition rate, a novel high-efficient welding system entitled twin-arc integrated cold wire hybrid welding was proposed in this paper. The study focuses on the effect of welding electrical parameters on alternative arcing and metal transfer process for the purpose of optimizing electrical parameters to realize a stable welding process. Characteristics of the metal transfer processes and the influence mechanism of welding electrical parameters on metal transfer modes were studied. The results showed that the two leading wires kept regularly alternative arcing with the phase difference of 180°between the pulse currents supplied to wires, and the alternating frequency increased with arc voltage and welding current. Besides, the metal transfer modes were divided into three types by varying welding parameters: short circuiting transfer, projected transfer, and streaming transfer. What is more important, the metal transfer mode highly depended on arc length, which was determined by arc voltage when welding current was kept constant. The metal transfer mode would change from short circuiting transfer to projected transfer, and then converted into streaming transfer eventually with the increase of arc voltage.

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High speed tandem gas tungsten arc welding process of thin stainless steel plate

Cited by 32 publications

References 4 publications

Numerical Simulation and Industrial Application of High Speed Tandem TIG Welding

Numerical Simulation and Industrial Application of High Speed Tandem TIG Welding

High-Speed Tandem Pulsed GTAW of Thin Stainless Steel Plate

Arc characteristics and metal transfer behavior of twin-arc integrated cold wire hybrid welding

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