Process Stability of Ultrasonic-Wave-Assisted Gas Metal Arc Welding

Fan, Chenglei; Xie, Weifeng; Yang, Chunli; Lin, Sanbao; Fan, Yangyang

doi:10.1007/s11661-017-4226-3

Cited by 24 publications

(8 citation statements)

References 12 publications

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“…At present, the addition of ultrasonic-assisted welding has become a vital regulation method. Due to the high quality of welding and fewer pores, an increasing number of researchers have introduced ultrasound into laser welding [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

Ren

Kan

et al. 2023

Materials

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Laser welding with filler wire was applied to Q345D in a narrow gap under ultrasonic assistance, and the dynamic characteristics of plasma were studied by high-speed imaging and spectral acquisition. The results showed that the plasma area decreased gradually with increasing distance between the ultrasonic loading position and welding seam. The electron density and temperature of the plasma with ultrasonic assistance were higher than those without ultrasound. The electron density was approximately 1016~1017 cm−3, and the plasma temperature was approximately 4000~6000 K. Ultrasonic assisted laser wire filling welding can bring about cavitation effect and significantly reduce the porosity problem.

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Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

Ren

Kan

et al. 2023

Materials

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“…U-GMAW increases the aspect ratio of the elliptical droplets, decreases the arc oscillation and restores the balance more quickly than conventional GMAW. The arc in U-GMAW thus becomes brighter and shorter, and operation at 20 kHz and 45 µm vibration amplitude produces shorter arc lengths than traditional GMAW 19) .…”

Section: Introductionmentioning

confidence: 99%

Penetration and microstructure of steel joints by ultrasonic-assisted gas metal arc welding

Chung¹,

Nguyen²,

Bui³

et al. 2022

Jpn. J. Appl. Phys.

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This work investigates the application of ultrasonic vibration to steel joints formed by gas metal arc welding. Welding is done using a metal active gas welding source with welding current of 120–160 A, 0.8-mm-diameter welding wire and 10 L/min CO2 flow. The distance from the torch to the ultrasonic horn is 120 mm. Ultrasonic vibration most affects the weld when ultrasonic vibration position is 120 mm from torch and increases the penetration when welding speed is 190 (275) mm/min for a 5-mm-thick (10-mm-thick) plate. Moreover, weld width increases when welding speed is 190 mm/min for 10-mm-thick plate. Although ultrasonic vibration does not affect the hardness of welding zones, it modifies the microstructure of the diffusion and welding-pool zones.

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“…Ultrasonic vibration is convenient to apply in assisting various manufacturing processes [9]. Ultrasonic vibration has been integrated with gas tungsten arc welding (GTAW) and gas metal arc welding (GMAW) to increase the weld penetration and improve the process effectiveness [10][11][12][13][14]. In ultrasound-assisted GTAW and GMAW, the ultrasonic radiator with a much larger diameter than the tungsten/wire was used to transmit acoustic vibration into the arc column effectively.…”

Section: Introductionmentioning

confidence: 99%

Effect of ultrasonic vibration on current density and keyholing capability of plasma arc

Zhang

Chen

Tian

2020

Science and Technology of Welding and Joining

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Ultrasonic-assisted plasma arc welding (U-PAW) process was developed to improve the penetrability. The current density of plasma arc on the anode surface was measured in plasma arc welding (PAW) and U-PAW processes. It was found that ultrasonic vibration can increase the peak value of the current density of plasma arc on anode surface. Both PAW and U-PAW experiments were conducted to examine the effect of ultrasonic vibration on the keyholing/penetrating capability of plasma arc. The weld macrographs at transverse cross-sections in PAW and U-PAW were also compared. The results show that the integration of ultrasonic vibration and the controlled pulse current waveform can ensure the open keyhole establishment and complete penetration at lower peak current or higher welding speed.

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Process Stability of Ultrasonic-Wave-Assisted Gas Metal Arc Welding

Cited by 24 publications

References 12 publications

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

Penetration and microstructure of steel joints by ultrasonic-assisted gas metal arc welding

Effect of ultrasonic vibration on current density and keyholing capability of plasma arc

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