Full penetration hybrid laser arc welding of up to 28 mm thick S355 plates using electromagnetic weld pool support

Üstündağ, Ömer; Avilov, Vjaceslav; Gumenyuk, Andrey; Rethmeier, Michael

doi:10.1088/1742-6596/1109/1/012015

Cited by 18 publications

(10 citation statements)

References 11 publications

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“…This seam is inadmissible according to the standard EN ISO 12932. With the use of an oscillating magnetic field, the weld shape formation corresponded to a typical wine-cup shape, and the sagging could be avoided as already shown in [5,24] (see Figure 6b). The AC magnet was operated at an oscillating frequency of 1.2 kHz and a magnet power of 1.8 kW.…”

Section: Resultssupporting

confidence: 53%

“…The gap between the workpieces does not affect the current density in the weld pool, which is oriented in the welding direction ( Figure 3b). This technology has been successfully used in the single-pass HLAW of steel plates with a thickness of up to 28 mm, with just 19 kW laser power [5]. When using hybrid laser-arc welding technology, it was necessary to choose a sufficiently high frequency of oscillation of the magnetic field so that the depth of penetration of the magnetic field into the metal would be significantly lower than the thickness of the sample board to be welded.…”

Section: Electromagnetic Weld Pool Influencementioning

confidence: 99%

“…The latest developments and trends in high-power laser beam welding are described in detail in [4]. Single-pass welds up to 28 mm wall thickness were conducted with an electromagnetic weld pool support system with a laser power of just 19 kW [5]. HLAW with cut-wire, which was filled in an air gap between the workpieces before welding, single-pass welds up to 25 mm with a ceramic or flux backing, and 50 mm in a double-sided welding technique were all realized successfully [6].…”

Section: Introductionmentioning

confidence: 99%

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Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Üstündağ

Avilov

Gumenyuk

et al. 2019

Metals

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Hybrid laser-arc welding offers many advantages, such as deep penetration, good gap bridge-ability, and low distortion due to reduced heat input. The filler wire which is supplied to the process is used to influence the microstructure and mechanical properties of the weld seam. A typical problem in deep penetration high-power laser beam welding with filler wire and hybrid laser-arc welding is an insufficient mixing of filler material in the weld pool, leading to a non-uniform element distribution in the seam. In this study, oscillating magnetic fields were used to form a non-conservative component of the Lorentz force in the weld pool to improve the element distribution over the entire thickness of the material. Full penetration hybrid laser-arc welds were performed on 20-mm-thick S355J2 steel plates with a nickel-based wire for different arrangements of the oscillating magnetic field. The Energy-dispersive X-ray spectroscopy (EDS) data for the distribution of two tracing elements (Ni and Cr) were used to analyze the homogeneity of dilution of the filler wire. With a 30 • turn of the magnetic field to the welding direction, a radical improvement in the filler material distribution was demonstrated. This would lead to an improvement of the mechanical properties with the use of a suitable filler wire.

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Section: Resultssupporting

confidence: 53%

Section: Electromagnetic Weld Pool Influencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Üstündağ

Avilov

Gumenyuk

et al. 2019

Metals

Self Cite

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“…Where many experimental techniques are used to test the welding process such as spectroscopic methods and multidirectional monochromatic imaging methods [19][20][21][22]. Thus experimental and numerical methods are widely used in arc welding [23][24][25] where the results can be compared for further investigations, mainly for newly developed arc welding techniques such as the laser hybrid welding process [26] where it increased welding velocity and improved bridgeability to gap and misalignment tolerances.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Heat Transfer Water-Cooled Roof in an Electric Arc Furnace

Assad

Khanafer

Hani

et al. 2021

Journal of Thermal Engineering

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One of the major problems in electric arc furnace is the high temperature which results in thermal stresses and cracks within the material of the furnace surrounding walls. An effective cooling technique is needed to avoid such problems. For this purpose, a novel roof configuration of an electric arc furnace is used to provide efficient cooling to reduce the temperature in the roof material. The roof consists of two solid materials, namely, copper and alumina brick. The roof cooling is achieved by a water circulation within the roof. A numerical model using finite element method was implemented to solve the heat conduction equation with the complicated boundary conditions to find out the effects of using brick material with geometrical size variations for different values of thermal conductivity on the temperature distribution within the roof. The results showed that the decrease in brick material thermal conductivity resulted in a significant decrease in the top surface temperature of the furnace roof. The results showed that rectangular brick material is the best option in the roof to keep it at low temperature.

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“…Hybrid Laser Arc Welding (HLAW) is an attractive joining method used as a single pass welding technique covering a wide range of thicknesses, with plates of up to 35 mm [1][2][3][4]. It provides good quality joints, minimal thermal distortions and improved productivity in comparison with conventional arc welding.…”

Section: Introductionmentioning

confidence: 99%

The Effects of HLAW Parameters for One Side T-Joints in 15 mm Thickness Naval Steel

Churiaque

Sánchez-Amaya

Porrúa-Lara³

et al. 2021

Metals

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The present contribution is the first research reporting full penetration HLAW joints in 15 mm thick EH36 steel butt T-welds with square grooves on 2F welding position by single-sided welding. The effects of welding parameters were investigated to increase the quality of the joints. Conditions leading to defect-free full penetration welds fulfilling naval regulations includes a laser power of 12.5 kW, a welding speed of 1.6 m/min and the vertical laser offset distance from the flange of 1 mm. Advanced characterization of selected welds included a microstructural identification by optical microscopy, SEM, and XRD, revealing the presence of acicular, polygonal and Widmanstätten ferrite, lath martensite, and some retained austenite at FZ. Hardness and microhardness mapping tests showed values of 155 HV at base metal and 200 to 380 HV at the fusion zone connecting the web to the flange.

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Full penetration hybrid laser arc welding of up to 28 mm thick S355 plates using electromagnetic weld pool support

Cited by 18 publications

References 11 publications

Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Improvement of Filler Wire Dilution Using External Oscillating Magnetic Field at Full Penetration Hybrid Laser-Arc Welding of Thick Materials

Numerical Investigation of Heat Transfer Water-Cooled Roof in an Electric Arc Furnace

The Effects of HLAW Parameters for One Side T-Joints in 15 mm Thickness Naval Steel

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