كتاب Fabrication and Welding Engineering

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Fabrication & Welding Engineering
Roger Timings

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Contents
Preface ix
Acknowledgements of fi gures and tables xi
1 Health and safety 1
1.1 Health, safety and the law 2
1.2 Employers ’ responsibilities 4
1.3 Employees ’ responsibilities 5
1.4 Electrical hazards 6
1.5 Fire fighting 7
1.6 Fire precautions and prevention 10
1.7 Accidents 11
1.8 First aid 14
1.9 Personal protection 16
1.10 Hazards in the workplace 19
1.11 Manual lifting 23
1.12 Mechanical lifting equipment 26
1.13 Use of lifting equipment 31
1.14 Accessories for lifting gear 32
1.15 Useful knots for fibre ropes 35
1.16 Inspection (lifting equipment) 37
1.17 Oxy-acetylene welding 37
1.18 Arc-welding equipment (mains operated) 43
1.19 Working on site 50
Exercises 53
2 Personal development 57
2.1 Basic relationships 58
2.2 Relationship with managers, supervisors and instructors 59
2.3 Attitude and behaviour 61
2.4 Implementing company policy 62
2.5 Creating and maintaining effective working relationships with
other people 64
Exercises 663 Engineering materials and heat treatment 69
3.1 States of matter 70
3.2 Properties of materials 70
3.3 Classification of materials 77
3.4 Ferrous metals (plain carbon steels) 77
3.5 Ferrous metals (alloy steels) 80
3.6 Ferrous metals (cast irons) 81
3.7 Abbreviations 81
3.8 Non-ferrous metals and alloys 81
3.9 The identification of metals 86
3.10 Non-metals (natural) 86
3.11 Non-metals (synthetic) 86
3.12 Forms of supply 88
3.13 Heat treatment processes (introduction) 91
3.14 Heat treatment processes (safety) 92
3.15 The heat treatment of plain carbon steels 93
3.16 The heat treatment of non-ferrous metals and alloys 100
3.17 Heat-treatment furnaces 102
3.18 Temperature measurement 105
3.19 Atmosphere control 108
Exercises 109
4 Using and communicating technical information 111
4.1 Selection of information sources 112
4.2 Interpretation of information (graphical) 112
4.3 Interpretation of information (tables, charts and schedules) 116
4.4 Evaluating engineering information 118
4.5 Recording and processing engineering information 119
4.6 Methods of record keeping 121
4.7 Communications (miscellaneous) 121
4.8 Engineering drawing (introduction) 124
4.9 First angle orthographic drawing 125
4.10 Third angle orthographic drawing 127
4.11 Conventions 129
4.12 Redundant views 132
4.13 Dimensioning 132
4.14 Welding symbols 136
4.15 The development of surfaces 137
4.16 Interpenetration 151
4.17 Pictorial views 153
Exercises 155
5 Measuring and marking out 161
5.1 Introduction 162
5.2 Linear measurement 162
5.3 Angular measurement 169
5.4 Correct use of measuring equipment 171
5.5 Marking out equipment (tools for making lines) 172
vi Contents5.6 Marking out equipment (tools for providing guidance) 177
5.7 Marking out equipment (tools for providing support) 181
5.8 Techniques for marking out 183
5.9 The need for templates 192
5.10 The manufacture of templates 192
5.11 The use of templates 195
5.12 Condition and care of equipment 206
Exercises 208
6 Material removal 211
6.1 Cutting tool principles 212
6.2 The application of basic cutting tool angles to hand tools 214
6.3 Drilling, drilling machines and routing 226
6.4 Shearing sheet metal 239
6.5 Portable power tools 249
6.6 Blanking (stamping and piercing) 259
6.7 Flame cutting 263
Exercises 275
7 Sheet and plate metalwork 277
7.1 Sheet and plate metalwork (introduction) 278
7.2 Roll-bending sheet metal and plate 296
7.3 Flow forming sheet metal 301
7.4 The principles of metal spinning 318
7.5 Swaging sheet metal 324
7.6 Basic fabrication procedures 330
Exercises 345
8 Structural steelwork and pipework 347
8.1 Rolled steel sections 348
8.2 Typical structural steel connections and assemblies 348
8.3 Trusses and lattice frames 353
8.4 Web stiffeners 356
8.5 Fabricated lightweight beams 359
8.6 Castellated beams 359
8.7 Pipework (setting out bends) 362
8.8 Pipe bending 366
8.9 Pipe fitting 373
Exercises 382
9 Joining processes (mechanical connections) 385
9.1 Mechanical connections (threaded) 386
9.2 Hand reamers and reaming 404
9.3 Riveted joints 405
9.4 Pop Diveting 411
9.5 Self secured joints 418
9.6 Folding and jointing allowance 421
9.7 The Pittsburgh lock 425
Exercises 42
10 Joining processes (soldering, brazing and braze-welding) 429
10.1 Soft soldering 430
10.2 Soft-soldered joints using lead-free solders 445
10.3 Hard soldering (brazing) 447
10.4 Aluminium brazing 457
10.5 Types of brazed joints 460
10.6 Braze-welding 460
Exercises 466
11 Joining processes (welding) 467
11.1 Fusion welding 468
11.2 Oxy-acetylene welding 468
11.3 Manual metal-arc welding 490
11.4 Workshop testing of welds 504
11.5 Miscellaneous fusion welding processes 506
11.6 Workholding devices for fusion welding 509
11.7 Resistance welding 515
11.8 Further welding processes 518
Exercises 519
12 Composite fabrication processes and adhesive bonding 521
12.1 Introduction 522
12.2 Lamination 522
12.3 Fibre reinforcement 525
12.4 Particle reinforcement 531
12.5 The manipulation and fabrication of polymers (plastics) 533
12.6 Adhesive bonding 540
12.7 Adhesive bonding of metals 545
Exercises 554
Appendix A 555
Index 55

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