The mechanism study of TIG-MIG hybrid welding process based on simulation

Cui, Xuefei; Chen, Ji; Xia, Chunyang; Han, Xiaohui; Chen, Wu

doi:10.1016/j.vacuum.2023.112341

Cited by 13 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mathematical models in this study include basic assumptions and governing equations. 15 The fluid dynamics software ANSYS FLUENT is based on the finite volume method, and the pressure-based solver and PISO algorithm are used for transient model calculation. The metal vapour behaviour is also calculated according to Ref., 15 which considers the influence of ambient pressure on the partial pressure of the metal vapour.…”

Section: Mathematical Modelmentioning

confidence: 99%

See 1 more Smart Citation

Influence of reduced pressure on arc and weld pool properties in TIG welding

Han,

Cui,

et al. 2024

Science and Technology of Welding and Joining

Self Cite

View full text Add to dashboard Cite

In this article, transient transport phenomena in the arc and weld pool for different ambient pressures during tungsten inert gas welding were reported. Arc plasma and weld pool behaviour vary with ambient pressure because of changes in arc thermophysical properties. The maximum arc temperature decreases with decreasing ambient pressure because of reduced plasma electrical conductivity. Decreased arc mass density results in a lower maximum weld pool surface temperature and a decrease in maximum metal vapour content as ambient pressure decreases. Arc pressure decreases with decrease in ambient pressure, resulting in shallower penetration. Calculated arc temperature distribution and weld cross-section are compared with experiments to validate the modeling method for simulating heat and mass transfer phenomena in low ambient pressure welding.

show abstract

Section: Mathematical Modelmentioning

confidence: 99%

“…The heat transfer coefficient k and the emissivity ε of the workpiece are set to 80 W/(m 2 K) and 0.4, respectively. 15…”

Section: Mathematical Modelmentioning

confidence: 99%

Influence of reduced pressure on arc and weld pool properties in TIG welding

Han,

Cui,

et al. 2024

Science and Technology of Welding and Joining

Self Cite

View full text Add to dashboard Cite

show abstract

“…They found that the TIG arc enhanced the welding process stability and controlled the heat input. Cui et al [11] also studied the effects of the TIG arc on the hybrid process. They thought that with the use of the TIG arc, the degree of metal vapor decreased, and the hybrid arc temperature increased compared to the single MIG process.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigation of the Thermal and Force Regulation Mechanism of Bypass Coupling Double-Sided Arc Welding Based on 6061 Aluminum Alloy

Zhang,

Wang,

Miao

et al. 2024

Coatings

View full text Add to dashboard Cite

In this study, 6061 aluminum alloy was proposed for welding using bypass coupling double-sided arc welding (BCO-DASW) to further improve its welding quality and efficiency. To gain insight into the thermal and force regulation mechanism of the BCO-DASW of 6061 aluminum alloy, the dynamic effects of the high-temperature plasma inside the arc with various parameters were fully compared and investigated through the combined method of the physical experiment and the numerical simulation. The thermal flow field of the hybrid arc was analyzed numerically. Furthermore, its working adaptability and mechanical behaviors were studied experimentally. The results show that a single penetration of the 6 mm sheets can be achieved without visible defects when the center offset of the arcs is within 3 mm on both sides of the base metal during BCO-DASW. Through the thermal analysis, it was found that, compared with the MIG process, the introduction of the bypass arc lead to a temperature decrease at the bottom of the hybrid arc due to energy redistribution. Furthermore, through the kinetic analysis, it was found that not only could the level of arc pressure be reduced, but also the action range of the arc pressure could be regulated up to 4.6 mm. The thermal force regulation mechanism worked together to enhance the stability of the molten pool and achieves good joint strength during the BCO-DASW of 6061 aluminum alloy. This research not only has great significance in further improving the welding quality and efficiency of aluminum alloy, but also deeper understanding of the energy regulation mechanism during aluminum alloy welding.

show abstract