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Handbook of Laser Welding Technologies

Book Description

Laser welding is a rapidly developing and versatile technology which has found increasing applications in industry and manufacturing. It allows the precision welding of small and hard-to-reach areas, and is particularly suitable for operation under computer or robotic control. The Handbook of laser welding technologies reviews the latest developments in the field and how they can be used across a variety of applications.

Part one provides an introduction to the fundamentals of laser welding before moving on to explore developments in established technologies including CO2 laser welding, disk laser welding and laser micro welding technology. Part two highlights laser welding technologies for various materials including aluminium and titanium alloys, plastics and glass. Part three focuses on developments in emerging laser welding technologies with chapters on the applications of robotics in laser welding and developments in the modelling and simulation of laser and hybrid laser welding. Finally, part four explores the applications of laser welding in the automotive, railway and shipbuilding industries.

The Handbook of laser welding technologies is a technical resource for researchers and engineers using laser welding technologies, professionals requiring an understanding of laser welding techniques and academics interested in the field.

  • Provides an introduction to the fundamentals of laser welding including characteristics, welding defects and evolution of laser welding
  • Discusses developments in a number of techniques including disk, conduction and laser micro welding
  • Focusses on technologies for particular materials such as light metal alloys, plastics and glass

Table of Contents

  1. Cover image
  2. Title page
  3. Table of Contents
  4. Copyright
  5. Contributor contact details
  6. Woodhead Publishing Series in Electronic and Optical Materials
  7. Preface
  8. Part I: Developments in established laser welding technologies
    1. Chapter 1: Introduction: fundamentals of laser welding
      1. Abstract:
      2. 1.1 Characteristics of laser welding
      3. 1.2 Lasers for welding
      4. 1.3 Laser welding phenomena
      5. 1.4 Laser weld penetration and welding defects
      6. 1.5 Evolution of laser welding
    2. Chapter 2: Developments in CO2 laser welding
      1. Abstract:
      2. 2.1 Introduction
      3. 2.2 Laser principles and types of lasers
      4. 2.3 Characteristics of CO2 laser beams
      5. 2.4 Laser-materials interactions
      6. 2.5 Welding phenomena and formation of defects
      7. 2.6 Industrial applications of CO2 laser welding
      8. 2.7 Future trends
      9. 2.8 Acknowledgements
    3. Chapter 3: Developments in Nd:YAG laser welding
      1. Abstract
      2. 3.1 Introduction
      3. 3.2 Basics of laser welding in keyhole (KH) mode with solid-state lasers
      4. 3.3 Examples of weld speed variation on global behaviour of keyhole (KH) and melt pool
      5. 3.4 Conclusion and future trends
      6. 3.6 Appendix: list of symbols
    4. Chapter 4: Developments in disk laser welding
      1. Abstract
      2. 4.1 Introduction: key principles of disk lasers
      3. 4.2 Technological trends and developments
      4. 4.3 Applications
      5. 4.4 Future trends
    5. Chapter 5: Developments in pulsed and continuous wave laser welding technologies
      1. Abstract:
      2. 5.1 Introduction
      3. 5.2 Fundamentals of laser welding
      4. 5.3 New developments in laser welding
      5. 5.4 Future trends
    6. Chapter 6: Conduction laser welding
      1. Abstract:
      2. 6.1 Introduction: comparison between keyhole and conduction laser welding
      3. 6.2 The transition between conduction and keyhole mode
      4. 6.3 Conduction laser welding
      5. 6.4 Applications of conduction laser welding
    7. Chapter 7: Developments in laser microwelding technology
      1. Abstract
      2. 7.1 Introduction
      3. 7.2 Laser choices for microwelding
      4. 7.3 Laser microwelding process
      5. 7.4 Defects and evaluation of microweld joints
      6. 7.5 Applications of laser microwelding
      7. 7.6 Conclusion and future trends
  9. Part II: Laser welding technologies for various materials
    1. Chapter 8: Laser welding of light metal alloys: aluminium and titanium alloys
      1. Abstract:
      2. 8.1 Introduction to laser welding of aluminium alloys
      3. 8.2 Laser welding technologies for aluminium alloys
      4. 8.3 Microstructure, defects, mechanical properties and corrosion behaviour of aluminium welds
      5. 8.4 Introduction to laser welding of titanium alloys
      6. 8.5 Laser welding technologies for titanium alloys
      7. 8.6 Microstructure, defects, mechanical properties and corrosion behaviour of titanium welds
    2. Chapter 9: Laser welding and brazing of dissimilar materials
      1. Abstract:
      2. 9.1 Introduction
      3. 9.2 Special issues in joining of dissimilar materials
      4. 9.3 Laser joining processes and their applications
      5. 9.4 Formation and properties of dissimilar joints
      6. 9.5 Future trends
    3. Chapter 10: Laser welding of plastics
      1. Abstract
      2. 10.1 Introduction
      3. 10.2 History
      4. 10.3 Theory of welding plastics
      5. 10.4 Effect of main welding parameters
      6. 10.5 Modelling of plastics welding
      7. 10.6 Introduction to plastics welding processes
      8. 10.7 Polymer combinations that can be welded
      9. 10.8 Laser welding of plastics: process description
      10. 10.9 Welding parameters
      11. 10.10 Advantages and disadvantages of transmission laser welding
      12. 10.11 Applications
    4. Chapter 11: Laser welding of glass
      1. Abstract:
      2. 11.1 Introduction
      3. 11.2 Features of glass welding
      4. 11.3 Glass welding by continuous wave (CW) lasers
      5. 11.4 Glass welding by ultrashort pulse lasers (USPL)
      6. 11.5 Conclusion and future trends
    5. Chapter 12: Defect formation mechanisms and preventive procedures in laser welding
      1. Abstract:
      2. 12.1 Introduction
      3. 12.2 Terminology, characteristics, causes and preventive procedures of laser welding imperfections and defects
      4. 12.3 Formation mechanisms and preventive procedures of porosity
      5. 12.4 Formation mechanisms and preventive procedures of hot cracking: solidification cracking and liquation cracking
    6. Chapter 13: Residual stress and distortion in laser welding
      1. Abstract:
      2. 13.1 Introduction
      3. 13.2 Causes of residual stress and distortion
      4. 13.3 Mechanism of formation of longitudinal and transverse shrinkage of welded joints
      5. 13.4 Influential factors on welding distortion and residual stress
      6. 13.5 Distortion and residual stress produced by laser welding
  10. Part III: Developments in emerging laser welding technologies
    1. Chapter 14: Applications of robotics in laser welding
      1. Abstract:
      2. 14.1 Introduction: key issues in robotic laser welding
      3. 14.2 Connection topology
      4. 14.3 Coordinate frames and transformations
      5. 14.4 Tool calibration
      6. 14.5 Seam teaching and tracking
      7. 14.6 Trajectory-based control
      8. 14.7 Conclusion
    2. Chapter 15: Developments in beam scanning (remote) technologies and smart beam processing
      1. Abstract:
      2. 15.1 Introduction
      3. 15.2 Beam movement over the workpiece
      4. 15.3 Beam shaping
      5. 15.4 Future trends
    3. Chapter 16: Developments in twin-beam laser welding technology
      1. Abstract:
      2. 16.1 Introduction
      3. 16.2 Numerical study on molten metal flow behavior during twin-beam irradiation
      4. 16.3 Apparatus and procedure of twin-beam laser technique
      5. 16.4 Application of twin-laser beam
      6. 16.5 Conclusion
    4. Chapter 17: Developments in multi-pass laser welding technology with filler wire
      1. Abstract:
      2. 17.1 Introduction
      3. 17.2 Principle of multi-pass welding with filler wire
      4. 17.3 Developments in technology
      5. 17.4 Future trends: further improvement of welding efficiency
    5. Chapter 18: Developments in hybridisation and combined laser beam welding technologies
      1. Abstract:
      2. 18.1 Introduction
      3. 18.2 Laser and arc hybrid welding
      4. 18.3 Combining laser welding and laser cutting
    6. Chapter 19: Developments in hybrid laser-arc welding technology
      1. Abstract
      2. 19.1 Introduction
      3. 19.2 Developments in technology
      4. 19.3 Examples of applications
      5. 19.4 Quality issues
      6. 19.5 Future trends
      7. 19.6 Sources of further information and advice
    7. Chapter 20: Developments in modelling and simulation of laser and hybrid laser welding
      1. Abstract:
      2. 20.1 Introduction: the role of modelling in laser welding
      3. 20.2 Key issues in modelling laser welding processes
      4. 20.3 Applications for improving the laser welding technique and the quality of laser welded components
      5. 20.4 Future trends
  11. Part IV: Applications of laser welding
    1. Chapter 21: Applications of laser welding in the automotive industry
      1. Abstract:
      2. 21.1 Introduction
      3. 21.2 Production targets and challenges
      4. 21.3 Laser applications in the body shop
      5. 21.4 Quality issues
      6. 21.5 Future trends
    2. Chapter 22: Applications of laser welding in the railway industry
      1. Abstract:
      2. 22.1 Introduction: the role of laser welding in railway engineering
      3. 22.2 Laser welding technology for stainless steel railway vehicles
      4. 22.3 Heat source model of lap laser welding of stainless steel vehicles
      5. 22.4 Quality control of laser welding joints in stainless steel vehicles
      6. 22.5 Future trends
      7. 22.6 Sources of further information and advice
    3. Chapter 23: Applications of laser welding in the shipbuilding industry
      1. Abstract:
      2. 23.1 Introduction
      3. 23.2 The approval of laser-based welding in shipbuilding
      4. 23.3 Industrial examples
      5. 23.4 Future trends
      6. 23.5 Conclusion
  12. Index