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Hybrid laser-arc welding

Edited by F O Olsen, Technical University of Denmark, Denmark

Woodhead Publishing Series in Welding and Other Joining Technologies No. 64

…a valuable source of reference for all those using this important welding technology.
Welding and Cutting

 - reviews arc and laser welding including both advantages and disadvantages of the hybrid laser-arc approach
 - explores the characteristics of the process including the properties of joints produced by hybrid laser-arc welding and ways of assessing weld quality
 - examines applications of the process including magnesium alloys, aluminium and steel with specific focus on applications in the shipbuilding and automotive industries

Hybrid laser-arc welding (HLAW) is a combination of laser welding with arc welding that overcomes many of the shortfalls of both processes. This important book gives a comprehensive account of hybrid laser-arc welding technology and applications.

The first part of the book reviews the characteristics of the process, including the properties of joints produced by hybrid laser-arc welding and ways of assessing weld quality. Part two discusses applications of the process to such metals as magnesium alloys, aluminium and steel as well as the use of hybrid laser-arc welding in such sectors as ship building and the automotive industry.

With its distinguished editor and international team of contributors, Hybrid laser-arc welding is a valuable source of reference for all those using this important welding technology.

ISBN 1 84569 370 1
ISBN-13: 978 1 84569 370 1
June 2009
336 pages  234 x 156mm  hardback  
£145.00 / US$245.00 / €175.00

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About the editor

Professor Flemming Ove Olsen works in the Department of Manufacturing Engineering and Management at the Technical University of Denmark. He is internationally known for his research in the field of hybrid laser-arc welding.

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Contents

PART 1 CHARACTERISTICS OF HYBRID LASER-ARC WELDING
PART 2 APPLICATIONS OF HYBRID LASER-ARC WELDING
PART 3 HYBRID LASER-ARC WELDING OF STEEL

PART 1 CHARACTERISTICS OF HYBRID LASER-ARC WELDING

Advantages and disadvantages of arc and laser welding
E Reutzel, Pennsylvania State University, USA
 - Introduction
 - Arc welding
 - Laser welding
 - Acknowledgements
 - References

Fundamentals of hybrid laser-arc welding
S Katayama, Osaka University, Japan
 - Introduction
 - Plasma characteristics including interaction between laser beam and arc
 - Dynamic behaviour
 - Melt dynamics and melt pool stability
 - Formation and prevention mechanism of porosity
 - References

Heat sources of hybrid laser-arc welding processes
A Mahrle and E Beyer, Dresden University of Technology, Germany
 - Introduction
 - Laser beam heat sources
 - Arc heat sources
 - Combinations of laser beams and arcs
 - Future trends
 - References

Effect of shielding gas on hybrid laser-arc welding
M Gao and X Zeng, Huazhong University of Science and Technology, China
 - Introduction
 - Common types and physical properties of shielding gases
 - Effects of shielding gas in hybrid welding
 - Effects of shielding gas on the mechanical properties of hybrid weld
 - Conclusions and sources of further information and advice
 - References

Properties of joints produced by hybrid laser-arc welding
V Kujanpäa, Lappeenranta University of Technology, Finland
 - Introduction
 - Microstructure of hybrid laser-arc welds
 - Hardness
 - Strength
 - Toughness
 - Fatigue properties
 - Corrosion properties
 - References

Quality control and assessing weld quality in hybrid laser-arc welding
J K Kristensen, FORCE Technology, Denmark
 - Introduction
 - Weldability of typical structural materials
 - Weld quality
 - Assessment of weld properties
 - Conclusions
 - Acknowledgments
 - References

PART 2 APPLICATIONS OF HYBRID LASER-ARC WELDING

Hybrid welding of magnesium alloys
L Liu, Dalian University of Technology, China
 - Introduction
 - Weldability of magnesium alloys
 - Low-power laser-arc hybrid welding process
 - Numerical simulation
 - Infrared temperature measurement
 - Spectral diagnose
 - Interaction between laser beam and arc plasma
 - Practical application
 - Conclusions and future trends
 - References

Shipbuilding applications of hybrid laser-arc welding
J K Kristensen, FORCE Technology, Denmark
 - Introduction
 - The approval of laser based welding in shipbuilding
 - Industrial examples
 - Conclusions
 - References

Industrial robotic application of laser-GMAW and laser-Tandem hybrid welding
H Staufer, Fronius International GmbH, Austria
 - Introduction
 - Laser hybrid process for industrial applications
 - Applications and case studies in the automotive industry
 - Application in shipbuilding
 - Synergies by LaserHybrid
 - The Laser-(GMAW-Tandem) Hybrid welding process in the automotive industry
 - Application of laser-tandem welding in the pipeline industry
 - Laser-tandem hybrid welding system
 - Laser hybrid welding with three arcs: principle of the Laser-GMAW and laser-tandem welding
 - Conclusions
 - References

Hybrid laser-arc welding of aluminium
C Thomy, BIAS – Bremer Institut für angewandte Strahltechnik GmbH, Germany
 - Introduction
 - Aluminium and its alloys
 - Fusion welding of aluminium alloys
 - Hybrid laser-arc welding processes for aluminium alloys
 - Properties of hybrid laser-arc welds
 - Applications
 - Future trends
 - References

Hybrid laser-arc welding of dissimilar metals
C Thomy, BIAS – Bremer Institut für angewandte Strahltechnik GmbH, Germany
 - Introduction
 - Specific aspects of and state-of-the-art in joining of dissimilar metals
 - Basic features of laser MIG hybrid welding for dissimilar metals
 - Process and joint properties
 - Application potentials
 - Future trends
 - References

PART 3 HYBRID LASER-ARC WELDING OF STEEL

Hybrid laser-arc welding of steel
S Katayama, Osaka University, Japan
 - Introduction
 - Hybrid laser-arc welding of steel and high tensile strength steel
 - Hybrid laser-arc welding of Zn-coated steel
 - Hybrid laser-arc welding of stainless steel
 - References