Welding Engineering - David H. Phillips

Welding Engineering

An Introduction
Buch | Hardcover
304 Seiten
2023 | 2nd edition
John Wiley & Sons Inc (Verlag)
978-1-119-85872-0 (ISBN)
116,58 inkl. MwSt
WELDING ENGINEERING The new edition of the popular welding engineering textbook includes brand-new topics, assignments, and review questions

Welding Engineering: An Introduction provides a clear and accessible overview of the concepts, tools, materials, and methods of modern welding and joining technology. With emphasis on fundamental engineering principles, this comprehensive textbook offers easy-to-understand coverage of a wide range of key topics in welding engineering, from the basics of arc welding processes to welding metallurgy, design, and safety. Concise chapters offer numerous figures, tables, images, and recommended readings to promote reader comprehension of the material.

Now in its second edition, the text contains fully revised content throughout, including entirely new sections on additive manufacturing and computational modeling of welds. Updated and expanded chapters address modern arc welding power supply technology, resistance, solid-state, and high energy density welding processes, weld inspection methods, codes and standards, welding of high strength steels, and more. This edition features simple yet effective end-of-chapter assignments that enhance students’ learning and assist instructors in developing assessment questions for their course.

The second edition of Welding Engineering:



Provides up-to-date coverage of rapidly growing techniques and technologies within the field
Features new assignments and true/false questions at the end of each chapter
Explains the essential concepts and principles necessary for more in-depth courses in welding, metallurgy, and design
Covers all the major welding processes used in manufacturing and fabrication

Welding Engineering: An Introduction, Second Edition is an excellent textbook for undergraduate and graduate welding engineering courses taught within four-year engineering degree programs, and a valuable guide for engineers and professionals in the manufacturing industry who need to learn fundamental welding engineering concepts for their job roles.

David H. Phillips is a Professor of Practice in the Welding Engineering program at The Ohio State University, USA. Dr. Phillips earned his PhD in Welding Engineering and, alongside the prior edition of this book, has co-authored the textbook Resistance Spot Welding: Fundamentals and Applications for the Automotive Industry. He is a licensed Professional Engineer (PE) in Welding Engineering, an International Welding Engineer (IWE), and a Certified Welding Inspector (CWI) with more than 20 years’ experience in the field. Dr. Phillips is a recipient of both the Adams Memorial and the MacQuigg teaching excellence awards.

Preface xiii

About the Companion Website xv

1 What Is Welding Engineering? 1

1.1 Introduction to Welding Processes 1

2 Arc Welding Processes 3

2.1 Fundamentals and Principles of Arc Welding 3

2.1.1 Fundamentals of an Electric Arc 5

2.1.2 Arc Voltage 6

2.1.3 Polarity 7

2.1.4 Heat Input 9

2.1.5 Welding Position 10

2.1.6 Filler Metals and Electrodes 11

2.1.7 Shielding 11

2.1.7.1 Gas Shielding 11

2.1.7.2 Flux Shielding 12

2.1.8 Weld Joints and Weld Types for Arc Welding 13

2.1.9 Primary Operating Variables in Arc Welding 14

2.1.9.1 Voltage 14

2.1.9.2 Current 14

2.1.9.3 Electrode Feed Rate/Wire Feed Speed 15

2.1.9.4 Welding Travel Speed 15

2.1.10 Metal Transfer Mode 16

2.1.11 Arc Blow 16

2.1.12 Common Arc Welding Defects and Discontinuities 17

2.2 Arc Welding Power Supplies 17

2.2.1 Transformers 18

2.2.2 Generators 18

2.2.3 Important Electrical Elements in Arc Welding Power Supplies 20

2.2.4 Volt-Ampere Characteristic of Arc Welding Power Supplies 23

2.2.5 Duty Cycle 26

2.2.6 Modern Advanced Arc Welding Power Supplies 27

2.3 Shielded Metal Arc Welding 30
2.4 Gas Tungsten Arc Welding 36

2.5 Plasma Arc Welding 44

2.6 Gas Metal Arc Welding 47

2.7 Flux Cored Arc Welding 55

2.8 Submerged Arc Welding 58

2.9 Other Arc Welding Processes 63

2.9.1 Electrogas Welding 63

2.9.2 Electroslag Welding 63

2.9.3 Arc Stud Welding 65

2.10 Test Your Knowledge 68

3 Resistance Welding Processes 69

3.1 Fundamentals and Principles of Resistance Welding Processes 69

3.1.1 Resistance and Resistivity 69

3.1.2 Current Range and Lobe Curves 72

3.1.3 Modern Equipment and Power Supplies 74

3.2 Resistance Spot Welding 75

3.3 Resistance Seam Welding 79

3.4 Resistance Projection Welding 81

3.5 High Frequency Welding 83

3.6 Flash Welding 85

3.7 Test Your Knowledge 88

4 Solid-State Welding Processes 91

4.1 Fundamentals and Principles of Solid-State Welding 91

4.1.1 Solid-State Welding Theory 91

4.1.2 Roll Bonding Theory 92

4.2 Friction Welding Processes 93

4.2.1 Inertia Friction Welding 94

4.2.2 Continuous Drive Friction Welding 96

4.2.3 Linear Friction Welding 97

4.2.4 Friction Stir Welding 98

4.3 Other Solid-State Welding Processes 101

4.3.1 Diffusion Welding 101

4.3.2 Explosion Welding 104

4.3.3 Ultrasonic Welding 106

4.4 Test Your Knowledge 110

5 High-Energy Density Welding Processes 111

5.1 Fundamentals and Principles of High-Energy Density Welding 111

5.1.1 Power Density 111

5.1.2 Keyhole Mode Welding 113

5.2 Laser Beam Welding 113

5.3 Electron Beam Welding 116

5.4 Test Your Knowledge 118

6 Other Approaches to Welding and Joining 121

6.1 Brazing and Soldering 121

6.2 Welding of Plastics 123

6.2.1 Hot Tool (Plate) Welding 124

6.2.2 Hot Gas Welding 125

6.2.3 Implant Induction Welding 126

6.2.4 Ultrasonic Welding 126

6.2.5 Vibration Welding 127

6.3 Adhesive Bonding 128

6.4 Novel and Hybrid Welding Processes 128

6.5 Additive Manufacturing 131

6.6 Oxyfuel Welding and Cutting 132

6.7 Other Cutting Processes 137

6.7.1 Plasma Cutting 137

6.7.2 Laser Beam Cutting 138

6.7.3 Air Carbon Arc Gouging 138

6.8 Test Your Knowledge 140

7 Design Considerations for Welding 141

7.1 Introduction to Welding Design 141

7.2 Mechanical Properties 141

7.2.1 Yield Strength 141

7.2.2 Tensile Strength 142

7.2.3 Ductility 142

7.2.4 Fatigue Strength 142

7.2.5 Toughness 142

7.2.6 Mechanical Properties—Effect of Temperature 144

7.3 Physical Properties 144

7.3.1 Thermal Conductivity 144

7.3.2 Melting Temperature 144

7.3.3 Coefficient of Thermal Expansion 145

7.3.4 Electrical Conductivity 145

7.4 Design Elements for Welded Connections 145

7.4.1 Joint and Weld Types 145

7.4.2 Joint and Weld Type Selection Considerations 148

7.4.3 Weld Joint Nomenclature—Groove Welds 150

7.4.4 Weld Joint Nomenclature—Fillet Welds 151

7.4.5 Welding Positions 151

7.5 Welding Symbols 154

7.6 Weld Sizing 159

7.7 Computational Modeling of Welds 162

7.8 Test Your Knowledge 164

8 Heat Flow, Residual Stress, and Distortion 165

8.1 Heat Flow 165

8.2 Fundamentals and Principles of Residual Stress and Distortion 169

8.3 Approaches to Minimizing or Eliminating Distortion 172

8.4 Test Your Knowledge 176

9 Welding Metallurgy 177

9.1 Introduction to Welding Metallurgy 177

9.2 The Fusion Zone 179

9.3 The Partially Melted Zone 180

9.4 The Heat‐Affected Zone (HAZ) 182

9.5 Introduction to Phase Diagrams 183

9.6 Test Your Knowledge 186

10 Welding Metallurgy of Carbon Steels 187

10.1 Introduction to Steels 187

10.2 Steel Microstructures and the Iron-Iron Carbide Diagram 189

10.3 Continuous Cooling Transformation (CCT) Diagrams 193

10.4 Hardness and Hardenability 196

10.5 Hydrogen Cracking 198

10.6 Heat-Affected Zone Microstructures in Steel 200

10.7 Advanced High-Strength Steels 202

10.8 Test Your Knowledge 204

11 Welding Metallurgy of Stainless Steels 207

11.1 Introduction to Stainless Steels 207

11.2 Constitution Diagrams 208

11.3 Martensitic Stainless Steels 210

11.4 Ferritic Stainless Steels 211

11.5 Austenitic Stainless Steels 214

11.6 Duplex Stainless Steels 218

11.7 Precipitation-Hardening Stainless Steels 220

11.8 Test Your Knowledge 220

12 Welding Metallurgy of Nonferrous Alloys 223

12.1 Aluminum Alloys 223

12.2 Nickel-Based Alloys 227

12.3 Titanium Alloys 231

12.4 Copper Alloys 234

12.5 Magnesium Alloys 235

12.6 Test Your Knowledge 237

13 Weld Quality 239

13.1 Weld Discontinuities and Defects 239

13.2 Mechanical Testing of Weldments 240

13.2.1 Tensile Testing 240

13.2.2 Ductility Testing 241

13.2.3 Toughness Testing 243

13.2.4 Fatigue Testing 244

13.3 Nondestructive Testing 248

13.3.1 Visual Examination 249

13.3.2 Liquid Penetrant Testing 249

13.3.3 Magnetic Particle Testing 250

13.3.4 Radiographic Testing 252

13.3.5 Ultrasonic Testing 254

13.4 Introduction to Fractography 255

13.5 Test Your Knowledge 258

14 Codes, Standards, and Welding Qualification 259

14.1 Introduction to Standards 259

14.2 AWS D1.1—“Structural Welding Code—Steel” 265

14.2.1 Welding and Welder Qualification 265

14.2.2 Fabrication and Inspection 272

14.3 Test Your Knowledge 272

15 Safe Practices in Welding 275

15.1 Electrical Shock 275

15.2 Radiation 275

15.3 Burns 275

15.4 Smoke and Fumes 276

15.5 Welding in Confined Space 276

15.6 Fire and Explosion Danger 276

15.7 Compressed Gasses 276

15.8 Hazardous Materials 277

15.9 Test Your Knowledge 277

Index 279

Erscheinungsdatum
Verlagsort New York
Sprache englisch
Maße 178 x 254 mm
Gewicht 652 g
Themenwelt Technik Maschinenbau
ISBN-10 1-119-85872-0 / 1119858720
ISBN-13 978-1-119-85872-0 / 9781119858720
Zustand Neuware
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