Arc characteristics and metal transfer process of hybrid laser double GMA welding

Wei, Huiliang; Li, H.; Yang, Lijun; Ding, Xueping

doi:10.1007/s00170-014-6537-5

Cited by 20 publications

(10 citation statements)

References 21 publications

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“…The position of high-speed photographs is indicated on an arcing period with green numbers from 1 to 8. It can be observed that the leading wires 1 and 2 kept regularly alternative arcing [17]. The current and voltage of leading wire 1 was in the pulse peak phase while the current and voltage of leading wire 2 was in the base phase.…”

Section: Analysis Of the Arc Alternating Processmentioning

confidence: 91%

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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Section: Analysis Of the Arc Alternating Processmentioning

confidence: 91%

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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“…Hu [9] analyzed the influence of the distance between two arcs on plasma interaction and droplet transfer through a high speed camera system and an electrical signal acquisition system. Wei et al [4,10,11] qualitatively discussed the coupling mechanism of laser beam and arcs through an observation of electrical signals and high-speed camera signals in HLDAW. Gu et al [12] calculated the largest Lyapunov exponent (LLE) of characteristic currents during the welding process under different arc distance by the phase space reconstruction technique to evaluate the stability of HLDAW.…”

Section: Of 14mentioning

confidence: 99%

“…Hybrid laser-double-arc welding (HLDAW) is a novel welding method based on double-arc welding and laser welding, and compared with hybrid laser-single-arc welding, this welding method can achieve higher welding speed, lower line energy and the gap allowance is up to 2 mm [1][2][3]. In addition, the welding process is more stable than double arc welding [4]. Moreover, this kind of welding equipment is free from the limitation of welding direction, and the arc space can be adjusted according to application, which can better realize automatic welding [5,6].…”

Section: Introductionmentioning

confidence: 99%

Physical Characteristics of Coupled Plasma and Its Influence on Weld Formation in Hybrid Laser-Double-Arc Welding

Liu

et al. 2019

Materials

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Hybrid laser-double-arc welding (HLDAW) is an efficient welding method with multi-heat sources comprised of two arcs and a laser beam, which is an intricate process with much randomness and uncertainty due to the mutual effect between multi-plasmas. Compared with double-arc welding (DAW), HLDAW can generally obtain a more stable welding process and deeper weld penetration, which is directly affected by the synergistic effect of multiple heat sources; however, the mechanism has not been systematically studied. In this study, the multi-information analysis method is adopted to study the distribution of electron temperatures, electron densities and electrical conductivity of double-arc welding (DAW) and HLDAW by utilizing synchronous radiation spectrum, high-speed photography and electrical signal sensing technology. The results indicated that the high concentration of charged particles provided a conductive channel for the two arcs to achieve a more stable welding process in HLDAW. The synergy between the laser and the arc changed the flow mode of the weld pool, which facilitated the molten metal flowing toward the bottom of the molten pool. Obtaining the same melting depth, the line energy input of HLDAW was 13% lower than that of DAW; the heat affected zone is narrower and the grain size is smaller. The weld penetration depth was improved in HLDAW, which was 1.8 times that of DAW and 1.5 times that of pure laser welding under the laser power of 1.5 kW. The weld penetration of HLDAW increased with laser power.

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“…The double-wire-pulsed metal inert gas (MIG) welding process is commonly used in current welding industry, due to its high efficiency and extensive application [1,2]. Its process is characterized by nonlinear, strong time-varying and coupling among different parameters, and so forth [3,4].…”

Section: Introductionmentioning

confidence: 99%

Study on the wire feed speed prediction of double-wire-pulsed MIG welding based on support vector machine regression

Yao

Xue

Zhou

2015

Int J Adv Manuf Technol

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Obtaining the wire feed speed which can properly match the process parameters is difficult in double-wire-pulsed metal inert gas (MIG) welding. This work analyzed ten factors which affect the wire feed speed in reality and conducted corresponding correlation analysis. Then, four significant correlation factors, which were duty ratio, frequency, average current of leading wire, and average current of trailing wire, are selected as independent variables for establishing a double-wire feed speed prediction model. The model established by support vector machine regression used two evaluation criterions, which were the mean square error (MSE) and squared correlation coefficient (SCC), and then obtained the optimal model parameters by mesh optimization. Finally, the proposed model was validated by actual double-wire-pulsed welding experiments. This study can optimize the double-wire welding technological designing process and improve the intelligent double-wire welding industry.

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Arc characteristics and metal transfer process of hybrid laser double GMA welding

Cited by 20 publications

References 21 publications

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

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

Physical Characteristics of Coupled Plasma and Its Influence on Weld Formation in Hybrid Laser-Double-Arc Welding

Study on the wire feed speed prediction of double-wire-pulsed MIG welding based on support vector machine regression

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