Welding has a long history, with welded items reaching back to the Middle Ages. While the fundamentals of welding have not changed, new tools, chemicals, applications, and safety regulations have been developed to mirror modern technology and approaches. Modern welding processes have evolved to provide superior performance, in part because modern inspection techniques have advanced to the point that minute flaws and inclusions can now be easily detected long before a tank is ever used. There are various welding techniques available nowadays that aid in the speeding up of the process. Pipe welding positioners, robotic welding, laser welding, and seam welding are examples of new technology that benefit human welders' productivity and safety.
The book “Modern Welding Technology” relates the importance of automation and control in welding processes, highlights modern processes, and shows, among other influential welding factors, the importance of metal thermomechanical processing studies. It describes in detail the concepts of welding symbols, types of welding, physics of welding arc and laser welding. Different approaches, evaluations and methodologies on gas welding, heat flow in welding, design of weld joints and mechanical properties have been included in this book. It is a complete source of knowledge on the present status of this important field. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge. It will serve as a reference to a broad spectrum of readers.
Preface
1. Welding
1. Introduction to Welding
2. Need of Welding
3. Advantages of Welding
4. Disadvantages of Welding
5. Applications of Welding
6. Welding equipment
7. Classification of Welding Processes
Conclusion
References
2. History and Types of Welding
1. Introduction
2. Welding in the BC period
3. Welding in the A.D. period
4. Middle Ages
5. Modern or Latest Era of Welding
6. Types of Welding
7. Electric Resistance Welding
Conclusion
References
3. Welding Symbols
1. Introduction to Welding symbols
2. Elements Of A Welding Symbol
3. Near Member
4. References and General Notes
5. Location of Weld Symbols
6. Types of welds and their symbols
7. Fillet welds
8. Complete Joint Penetration
9. Groove welds
10. Plug and slot welds
11. Basic Weld Symbols
12. Arc Spot and Arc Seam Welds
13. Use of Weld symbols
Conclusion
References
4. Physics of Welding Arc
1. Introduction
2. Fundamentals of Arc Welding
3. Circuit diagram of Arc Welding
4. Types of arc welding
5. Consumable Electrode Methods
6. Non-consumable Electrode Methods
7. Other Types of Arc Welding
8. Basic Welding Circuit
9. Advantages of Arc Welding
10. Disadvantages of Arc Welding
11. Corrosion issues
12. Electron Emission Mechanisms
13. The Cathode Drop Zone
14. The Arc Column
15. The Anode and the Anode Drop Zone
16. Types of Welding Arcs
17. Arc Initiation
18. Arc Characteristics
19. Temperature of the Arc
Conclusion
References
5. Laser Welding
1. Introduction to Laser Welding
2. Principle and Mechanism of Laser Welding
3. Characteristics of Laser Welding
4. Key Benefits of welding with laser technology
5. Mechanisms of Laser Welding
6. Ruby Laser Equipment and Setup of Laser Welding
7. Set up for Laser welding
8. Process Parameters for Laser Welding
9. Weld Characteristics for Laser Welding
10. Weld Joint Design for Laser Welding
11. Applications of Laser Welding
12. Laser brazing joining
13. Variants of Laser Beam Welding
14. Advances in Robotic Laser Welding Technology
15. Safety Aspects of Laser Welding
16. The Ruby LASER
17. The CO2 LASER
18. Laser Beam Welding
19. Solid State LASER
20. The Excimer LASER
Conclusion
References
6. Heat Flow in Welding
1. Introduction to Heat flow in Welding
2. Weld Thermal Cycle
3. Factors affecting welding thermal cycle
4. Cooling Rate
5. Peak temperature and Heat Affected Zone
6. Solidification Rate
7. Residual stresses
Conclusion
References
7. Gas Welding
1. Introduction to Gas Welding
2. Process of Gas welding
3. Inert Gas Welding
4. Gas Metal Arc Welding
5. Tungsten Inert Gas Arc Welding (TIG, GTAW)
6. Different Types of flames in Gas Welding
7. Use of Gas in MIG welding
8. Need of Welding Torch
Conclusion
References
8. Types of Gas Welding and its Equipment
1. Introduction
2. Techniques of gas welding
3. Thermo chemical Processes
4. Gas welding in carbon steel plates and tubes
5. Gas welding Equipments and Accessories
6. Pressure Regulator
7. Gas hoses
8. Torch
9. Cylinders
10. Safety Measures in Gas Welding
11. General Precautions for Handling Compressed Gases
Conclusion
References
9. Design of Weld Joints
1. Introduction to Weld Joints
2. Types Of Welds
3. Modes of Failure of the weld joints
Conclusion
References
10. Design of Weld Joints and Mechanical Properties
1. Introduction
2. Design of a Butt Joint
3. Design of a Fillet Joint
4. Mechanical Properties of Welded Joints
5. Factors affecting on Welded Joints
6. Design of weld joints and loading conditions
7. Need of welding symbols
8. Types of Welding Positions
9. Edge preparation in Welding
10. Welding and weld bead geometry
11. Design aspects of weld joint
12. Design of Weld Joints for fatigue loading
13. Fatigue design rules in welding
14. Factors Influencing Fatigue Behavior
Conclusion
References
Index
Nan Soria is a Research Professor at University College, Jeonju. She has pursued her Ph.D. in Mechanical Engineering from University of Technology, Aomori. Her academic areas of interests include thermomechanics, strains and stresses, modelling, analytical and numerical methods in technological processes of metals and their alloys. Soria has contributed several articles, journals, research papers in the fields of automation, welding and allied processes. She has been an eminent speaker in seminars across Asia, Europe and America.
