Pulsed LASER-(micro)TIG hybrid welding: Process characteristics

The development and implementation into a high number of industrial applications of materials categorized as (Advanced) High Strength Steels (AHSS) due to their high performance per cost ratio is more and more present and this trend is also combined with the development and implementation of new joining technologies and processes, including laser-arc hybrid processes.The paper presents the results of applying Pulsed LASER-(micro)TIG hybrid welding process, for realizing overlap joints for Zn-coated (A)HSS materials in dissimilar configurations, joints that were presented as designed based on UltraLight Steel Auto Body (ULSAB) principles.The influence of main hybrid welding process parameters was investigated in order to establish if one can obtain joints with high values for the shear strength resistance for some of the actually used dissimilar steel combinations based on designs applied throughout ULSAB project and the autos built following these principles.

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Effect of electric arc on laser keyhole behavior based on direct observation during low power pulsed laser–arc hybrid welding process

Optics and Lasers in Engineering ◽

10.1016/j.optlaseng.2013.04.010 ◽

2013 ◽

Vol 51 (10) ◽

pp. 1153-1160 ◽

Cited By ~ 9

Author(s):

Liming Liu ◽

Minghua Chen ◽

Chenbin Li

Keyword(s):

Low Power ◽

Direct Observation ◽

Pulsed Laser ◽

Welding Process ◽

Electric Arc ◽

Hybrid Welding ◽

Behavior Based ◽

Keyhole Behavior

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Study on Laser Keyhole Behavior in High-efficiency Low Power Pulsed Laser-TIG Hybrid Welding Process

Journal of Mechanical Engineering ◽

10.3901/jme.2016.02.041 ◽

2016 ◽

Vol 52 (2) ◽

pp. 41 ◽

Cited By ~ 1

Author(s):

Chenbin LI

Keyword(s):

Low Power ◽

High Efficiency ◽

Pulsed Laser ◽

Welding Process ◽

Hybrid Welding ◽

Keyhole Behavior

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Effect of laser pulse on recovery delay of arc plasma based on ion migration behavior in the pulsed laser–arc hybrid welding process

Optics and Lasers in Engineering ◽

10.1016/j.optlaseng.2012.09.006 ◽

2013 ◽

Vol 51 (2) ◽

pp. 96-103 ◽

Cited By ~ 11

Author(s):

Liming Liu ◽

Minghua Chen

Keyword(s):

Laser Pulse ◽

Pulsed Laser ◽

Welding Process ◽

Migration Behavior ◽

Hybrid Welding ◽

Arc Plasma ◽

Ion Migration

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Pulsed Laser Welding Applied to Metallic Materials—A Material Approach

Metals ◽

10.3390/met11040640 ◽

2021 ◽

Vol 11 (4) ◽

pp. 640

Author(s):

Mariane Chludzinski ◽

Rafael Eugenio dos Santos ◽

Cristina Churiaque ◽

Marta Ortega-Iguña ◽

Jose Maria Sánchez-Amaya

Keyword(s):

Laser Welding ◽

Contact Process ◽

Weld Zone ◽

Pulsed Laser ◽

Welding Process ◽

Industrial Sector ◽

Dissimilar Joints ◽

Pulsed Laser Welding ◽

Strength Performance ◽

Process Characteristics

Joining metallic alloys can be an intricate task, being necessary to take into account the material characteristics and the application in order to select the appropriate welding process. Among the variety of welding methods, pulsed laser technology is being successfully used in the industrial sector due to its beneficial aspects, for which most of them are related to the energy involved. Since the laser beam is focused in a concentrated area, a narrow and precise weld bead is created, with a reduced heat affected zone. This characteristic stands out for thinner material applications. As a non-contact process, the technique delivers flexibility and precision with high joining quality. In this sense, the present review addresses the most representative investigations developed in this welding process. A summary of these technological achievements in metallic metals, including steel, titanium, aluminium, and superalloys, is reported. Special attention is paid to the microstructural formation in the weld zone. Particular emphasis is given to the mechanical behaviour of the joints reported in terms of microhardness and strength performance. The main purpose of this work was to provide an overview of the results obtained with pulsed laser welding technology in diverse materials, including similar and dissimilar joints. In addition, outlook and remarks are addressed regarding the process characteristics and the state of knowledge.

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Experimental studies on the possibility of using a pulsed laser for spot welding of thin metallic foils

Open Engineering ◽

10.1515/eng-2020-0076 ◽

2020 ◽

Vol 10 (1) ◽

pp. 674-680

Author(s):

Piotr Sęk

Keyword(s):

Experimental Studies ◽

Pulsed Laser ◽

Welding Process ◽

Pulse Mode ◽

Weld Strength ◽

Spot Welds ◽

Butt Welding ◽

Strength Tests ◽

Metallic Foils ◽

The Impact

AbstractThe purpose of the experiment was to study the influence of the laser beam in pulse mode on metallic foils in order to obtain a spot weld. The welding process was carried out using the overlap weld method, using spot welds in various quantities. The Nd - YAG BLS 720 pulsed laser was used to conduct the experiment. The impact of the number of spot welds on the value of force needed to break the sample was examined. A number of measurements were carried out to determine the best process parameters. Butt welding and overlap welding were also performed using a continuous weld consisting of spot welds. Weld strength tests were performed to select the most appropriate parameters for the process under consideration.

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