Influence of Surface Coatings of Filler Wires on Weld Seam Properties of Laser Beam Welded Copper Connections

Mann, Vincent; Holzer, Matthias; Hofmann, Konstantin; Özkaya, Esra; Hugger, Florian; Roth, Stephan; Schmidt, Michael

doi:10.1016/j.phpro.2016.08.045

Cited by 5 publications

(4 citation statements)

References 2 publications

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“…Therefore, own experiments investigated the influence of filler wires on the bridgeable gap-width in laser beam welding of copper alloys, in order to reduce the geometrical requirements for the components. [5] Within the experiments the bridgeable gapwidth was enlarged from zero-gap to 0.3 mm, if filler wires with diameters of 0.5 mm were used, whereas the mechanical and electrical properties were improved in comparison to welding without filler wires. [5].…”

Section: State Of the Artmentioning

confidence: 99%

“…[5] Within the experiments the bridgeable gapwidth was enlarged from zero-gap to 0.3 mm, if filler wires with diameters of 0.5 mm were used, whereas the mechanical and electrical properties were improved in comparison to welding without filler wires. [5]. However, the use of filler materials increased the energy input per unit length required for the welding process by a factor of approximately two [5].…”

Section: State Of the Artmentioning

confidence: 99%

“…[5]. However, the use of filler materials increased the energy input per unit length required for the welding process by a factor of approximately two [5]. This fact is caused by the low absorption and high heat conductivity of copper and increases the energy consumption of the welding processes and decreases energy efficiency simultaneously [3].…”

Section: State Of the Artmentioning

confidence: 99%

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Influence of Surface Structured Filler Wires on Laser Beam Welding of Copper Alloys

Mann

Gärtner

Hugger

et al. 2015

AMM

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Compared to steel, the required amount of energy for conventional welding of copper is higher, due to its higher thermal conductivity. This problem is mainly solved by preheating the work pieces or welding processes with high intensities such as laser beam welding. As the absorption of copper for infrared wavelengths, which are commonly used in industrial applications today, is typically low, the energy efficiency of the laser welding process is low. Besides this, if filler wires are used in order to increase the bridgeable width of joining gaps, the energy consumption of the process is further increased due to the additional amount of energy required to melt the filler material.As roughened surfaces of copper parts are known to increase absorption and consequently energy efficiency of laser beam welding without filler wires, this paper investigates the influence of surface structured filler wires on laser beam welding of copper alloys. Thus, the correlation between knurling geometries, absorption, molten volume and the welding result is investigated. For this reason, the welding result is evaluated by means of geometrical, electrical and mechanical weld seam properties e.g. seam width, weld reinforcement, area of cross-section, electrical resistance, tensile strength and strain.

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Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Surface Structured Filler Wires on Laser Beam Welding of Copper Alloys

Mann

Gärtner

Hugger

et al. 2015

AMM

Self Cite

View full text Add to dashboard Cite

show abstract

“…The influence of reinforcement on the strength of weld joint was studied by Araque et al [12]. Mann et al [13] analyzed the effect of reinforcement on weld bead performance in the research that the influence of copper filler wire on the weld performance of laser beam welding dissimilar copper alloy joint. Although the above approaches achieve nondestructive testing in actual production, they still have the defects of low efficiency and high cost during the process of the research.…”

Section: Introductionmentioning

confidence: 99%

Collaborative and Quantitative Prediction for Reinforcement and Penetration Depth of Weld Bead Based on Molten Pool Image and Deep Residual Network

Shi

Bai

et al. 2020

IEEE Access

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Weld quality is generally determined by reinforcement and penetration depth of weld bead in arc welding. Penetration depth reflects weld strength and reinforcement reflects weld shape. What's more, there is a strong coupling between them, therefore it is necessary to monitor them collaboratively and quantitatively. In this paper, vision sensor system is utilized to collect non-interfering molten pool images during CMT (Cold Metal Transfer) welding process. Meanwhile, according to the locating system and the metallographic diagram, the position of molten pool image on weld bead is measured, as well as the corresponding reinforcement and penetration. A reinforcement-penetration collaborative prediction network model based on deep residual is designed to quantitatively predict reinforcement and penetration depth. Combining the physical_mechanisms of forming process, we optimize the network structure that the backbone network is Resnet34, the input is frequency domain image of the middle and rear areas of molten pool, and the output is dual and synergetic. The correlation characteristics that affect reinforcement and penetration depth in molten pool images are fully studied. The reinforcement prediction error is less than 0.13 mm and penetration depth is less than 0.09 mm for various welding parameters and workpiece shapes.

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A review on laser beam welding of copper alloys

Auwal

Ramesh

Yusof

et al. 2018

Int J Adv Manuf Technol

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Influence of Surface Coatings of Filler Wires on Weld Seam Properties of Laser Beam Welded Copper Connections

Cited by 5 publications

References 2 publications

Influence of Surface Structured Filler Wires on Laser Beam Welding of Copper Alloys

Influence of Surface Structured Filler Wires on Laser Beam Welding of Copper Alloys

Collaborative and Quantitative Prediction for Reinforcement and Penetration Depth of Weld Bead Based on Molten Pool Image and Deep Residual Network

A review on laser beam welding of copper alloys

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