Multikilowatt laser welding in the automotive industry

1996 ◽  
Author(s):  
Raymond F. Duhamel
Keyword(s):  
Laser Welding ◽  
Automotive Industry

Laser welding defects detection in automotive industry based on radiation and spectroscopical measurements

2009 ◽  
Vol 49 (1-4) ◽  
pp. 133-145 ◽  
Author(s):  
Sergio Saludes Rodil ◽  
Roberto Arnanz Gómez ◽  
José M. Bernárdez ◽  
Fernando Rodríguez ◽  
Luis J. Miguel ◽  
...  
Keyword(s):  
Laser Welding ◽  
Automotive Industry ◽  
Welding Defects

Application of Laser Remote Welding to an Aluminum Automotive Part

2010 ◽  
Vol 654-656 ◽  
pp. 966-969
Author(s):  
Cheol Hee Kim ◽  
Won Ho Choi ◽  
Ki Young Park
Keyword(s):  
Laser Welding ◽  
Automotive Industry ◽  
Spot Welding ◽  
Thin Disk ◽  
Al Alloys ◽  
Thermal Distortion ◽  
Focal Distance ◽  
High Brightness ◽  
Automotive Part ◽  
Remote Welding

Aluminum alloys are extensively used in the automotive industry in response to increasing requirements for weight reduction in car body architecture. Laser welding of Al alloys has many advantages such as low heat input, narrow heat affected zone, minimal thermal distortion and flexibility. Recently, the development of high brightness lasers - thin disk lasers and fiber lasers enable long focal distance welding so that laser remote welding with scanning mirrors can be used in laser welding of Al alloys. In this study, laser remote welding was implemented to a heat shield part of an automobile by utilizing a 4kW disk laser and a 2-axis scanner. By replacing conventional resistance spot welding, the weld flange length could be reduced from 15mm to 8mm and a cycle time for each welding point could also be reduced from 3.5s to 0.6s.

Microstructural and Mechanical Characterization of a TRIP-800 Steel Welded By Laser-CO2 Process

2010 ◽  
Vol 1276 ◽  
Author(s):  
G. Y. Perez-Medina ◽  
P. Zambrano ◽  
H. F. López ◽  
F. A. Reyes-Valdés ◽  
V. H. López-Cortés
Keyword(s):  
Laser Welding ◽  
Automotive Industry ◽  
Annealing Temperature ◽  
Process Condition ◽  
Welding Process ◽  
Controlled Cooling ◽  
The Impact ◽  
Holding Temperature ◽  
Laser Welding Process

AbstractThis paper presents results on the impact of Laser CO2 process variables on the weldability, phase transformations and tensile properties of a TRIP800 Steel. The microstructure of this steel is comprised of ferrite, bainite and retained austenite phases. This is obtained by controlled cooling from the intercritical annealing temperature to the isothermal bainitic holding temperature. These steels have been increasingly used in the last 10 years in the automotive industry and for these materials to be used effectively; the influence of material and the CO2 laser welding process condition must be clearly understood. Hence, in this work the effect of the welding process on the resultant microstructures and on the exhibited mechanical properties is investigated. It is found that the tensile strength of welded specimens falls below 800 MPa and that the elongation becomes 15 % or lower. In turn, this clearly indicates that the implemented laser welding process leads to a reduction in the TRIP800 steel toughness.

Parameters of Laser Welding and their Influence of Weld Seam

2015 ◽  
Vol 818 ◽  
pp. 260-263
Author(s):  
Peter Balog ◽  
Janette Brezinová ◽  
Peter Pastorek
Keyword(s):  
Laser Welding ◽  
Automotive Industry ◽  
New Technologies ◽  
Beam Quality ◽  
Laser System ◽  
Base Material ◽  
Lap Joints ◽  
Welding Parameters ◽  
Beam Diameter ◽  
Butt Welding

Lap joints are most used joints in automotive industry. These types of welds are usually created by spot welding, but new technologies who came to automotive industry considerably do weld process faster. Paper deals with laser welding parameters and their influence of weld seams. The parameters of welding are readjusting according to shape of weld, impurities of surface and gap. Steel S500MC with thickness of 1.0 and 2.2 mm was used as the base material. For welding was used fiber laser Ytterbium Laser System YLS with power of 6000 watt from IPG Company. Research was oriented on changing weld parameters and their influence of welds quality. It was found that butt welding joints are sensitive to gap and the gap tolerances which in turn is dependent on material thickness, beam diameter, welding speed and beam quality.

Improving the Heat Dissipation From a Pressure Wheel of a Laser Robotic End-of-Arm Tooling Using Different Geometrical Designs and Materials

2018 ◽  
Author(s):  
Abdallah Hamieh ◽  
Mike A. Kheirallah ◽  
Badih Jawad ◽  
Liping Liu ◽  
Vernon Fernandez
Keyword(s):  
Laser Welding ◽  
Automotive Industry ◽  
Heat Dissipation ◽  
Initial Temperature ◽  
Production Costs ◽  
Manufacturing Cost ◽  
Welding Robot ◽  
Cooling Period ◽  
Transient Thermal ◽  
Ansys Workbench

The automotive industry corporations noticed the advantages of automated laser welding. Robot laser welding systems have immediately attracted their interests for bringing down the production costs and delivering higher-quality items. The objective of this research is to study how to enhance heat dissipation to endorse a better performance of the pressure wheel, and help achieve a longer life cycle. Transient thermal analysis of the pressure wheel was conducted using ANSYS workbench. The work studied the effects of different design models and materials on the thermal performance of pressure wheel assembly during the cooling period. Numerical simulations were performed on both solid and geometrically ventilated wheels for enhancing the heat dissipation performance of the wheel. Different materials were also be tested and compared. The analysis will support the design process by monitoring different parameters in terms of performance, heat loss and manufacturing cost. A comparison was made for two different designs each with three different materials and the best design was selected. The simulation results in a period of 50 seconds cooling time showed that the temperature dropped with the 1st design (full solid wheel) made of tungsten from an initial temperature Ti = 500 K to a final temperature of Tf = 434.5 K. Tungsten was found to have better heat dissipation compared to stainless steel and cast iron. For the 2nd design (geometrically ventilated wheel) made of tungsten, the temperature drops from Ti = 500 K to Tf = 422.1 K. Comparing the two designs, the geometrically ventilated wheel was proved to be cooled faster. The present work will help improve the performance of pressure wheel in the welding industry by providing computational results for successive design testing and data validation.

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