The dynamic behavior of double arc interference in high-power double wire pulsed GMAW

Wu, Kaiyuan; He, Zuwei; Liang, Zhuoyong; Cheng, Junyi

doi:10.1007/s00170-016-8916-6

Cited by 19 publications

(7 citation statements)

References 15 publications

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“…As the current of the leading arc was greater than that of the trailing arc, the arc stability was better. Wu et al [18] found that the twin-arc interference of the reversal phase was more serious by investigating the high-current twin-wire pulsed GMAW welding, while the interference behavior significantly reduced when the phases were identical. Ye et al [19] found that when the trailing arc increased, the leading arc was significantly closer to the trailing arc due to the electromagnetic effect and the droplet transition mode of the leading arc transited from droplet transition to rotation transition.…”

Section: Of 16mentioning

confidence: 99%

Effects of Flowrate of Additional Shielding Gas on the Properties of Welded Seam by Twin-wire GMAW Welding for Duplex Stainless Steel

Yu¹,

Xue²

2023

Preprint

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Aiming to diminish the defects caused by high-speed pulsed GMAW welding, such as non-penetration, non-fusion, humping and undercut, the paper proposed an improved twin-wire double-pulsed high-speed welding process by introducing the impact of additional shielding gas on the welding pool and the effects of different shielding gas flowrates on the microstructure and mechanical properties of the welded seam was investigated. The 2205 duplex stainless steel plate was used as the base material for the butt welding test, and the welded seams were subjected to tensile test, metallographic analysis, hardness analysis, and nondestructive testing. The results indicate that as the flowrate of additional shielding gas increases in the range of 8 L/min~16 L/min, the width of the welded seam increases and the height of reinforcement decreases gradually. However, a grooved seam with a lower middle region and higher sides will appear when the gas flowrate becomes excessively large. The test results indicate that the jet impact force is relatively moderate when the flowrate of the additional shielding gas is 12 L/min and thus, is optimal for the welded seam.

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Section: Of 16mentioning

confidence: 99%

Effects of Flowrate of Additional Shielding Gas on the Properties of Welded Seam by Twin-wire GMAW Welding for Duplex Stainless Steel

Yu¹,

Xue²

2023

Preprint

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“…They depend on microdefects and microstructure properties. In other words, the "stirring and crushing" effect of the wire on the molten pool promotes fluidity, accelerates the escape of gas and reduces the porosity [26]. And with current increasing, the cooling rate accelerates, thus strength and hardness increase [27].…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Microstructural and Mechanical Characteristics of 7075-T6 Aluminum Alloy Joint by Double Wire Pulsed Cold Metal Transition Welding

Zhang

Zhu

et al. 2022

J. Phys.: Conf. Ser.

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In order to solve the problems of low joint strength and poor welding efficiency in fusion welding of 7075-T6 aluminum alloy, the double wire pulsed cold metal transition (DW-CMTP) welding method was used to weld 7075-T6 aluminum alloy. The microstructural and mechanical characteristics of the joints were analyzed by energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), tensile test and Vickers hardness measurement. The results showed that the DW-CMTP welded joints had good mechanical properties. The highest tensile strength of the joint is 320 MPa without post-weld heat treatment, reaching up to 63% of the basic material. The presence and distribution of micropores in weld joint were manipulate by welding parameters and weakened the joint strength. The fracture location transferred from the heat-affected zone to the fusion zone with the increase of heat input, owing to the change of pore distribution.

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“…The work considered the double pulse synchronous (DPS) and double pulse alternating (DPA) phases, and the leading and trailing power sources used the tandem mode. Through employing a high-speed photographic platform to capture the double arc profile photos in both alternating and synchronous phases modes in the experiment, Wu et al [27] discovered that in high-power applications, the current ratings were so high, so that judging the stability by inspecting arc interruptions was not feasible, as the interruptions were effectively eliminated despite significant arc interference. The work also concluded that the high-power welding with high current rating, double arc interference in the alternating phase mode was relatively larger, while in the synchronous phase mode, better double arc stability could be achieved.…”

Section: B Tandem Gmaw Processmentioning

confidence: 99%

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

Zhou

Yao

2019

IEEE Access

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Recently, double-wire gas metal arc welding (GMAW) process is more and more prevalently employed in industrial applications and attracted many academic researches. This paper reviewed the recent trends of researches and applications of this process. Three main aspects were included in this paper. The first was the operational process analysis of the process, and the reviewing work was divided into two catalogues: twin-wire GMAW process and tandem GMAW process, which were two main energy delivery and control formations of the process. This part focused on some negative phenomena, such as arc interruption, during the welding process and their effects on the products quality and process stability. Some works about using different current waveforms combinations and their effects on the welding process were discussed. Also, the works of numerical simulation for this process were mentioned in this part. The second part was about process stability monitoring, and corresponding works focused on establishing quantitative process stability estimation model. The last was the improvement of process control method, and the works mainly focused on the adjustment and modulation of the current waveforms, in order to eliminate negative phenomena, improve the process stability and obtain the products with high quality. Finally, some suggestions about future works were presented. This paper can provide references and enlightens for current academic researches or actual industrial applications in the double-wire GMAW process relative areas.INDEX TERMS Double-wire GMAW process, arc interruption, process stability, current waveform.

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The dynamic behavior of double arc interference in high-power double wire pulsed GMAW

Cited by 19 publications

References 15 publications

Effects of Flowrate of Additional Shielding Gas on the Properties of Welded Seam by Twin-wire GMAW Welding for Duplex Stainless Steel

Effects of Flowrate of Additional Shielding Gas on the Properties of Welded Seam by Twin-wire GMAW Welding for Duplex Stainless Steel

Microstructural and Mechanical Characteristics of 7075-T6 Aluminum Alloy Joint by Double Wire Pulsed Cold Metal Transition Welding

Review of the Recent Trends of Process Monitoring and Control for Double- Wire GMAW Process

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