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Unit 1 Basic Knowledge of Welding 1

Section Ⅰ Teaching and Learning 2

Section Ⅱ Self-study 5

Section Ⅲ Practical Exercises 11

Unit 2 Shielded Metal Arc Welding 14

Section Ⅰ Teaching and Learning 15

Section Ⅱ Self-study 19

Section Ⅲ Practical Exercises 22

Unit 3 Submerged Arc Welding 25

Section Ⅰ Teaching and Learning 26

Section Ⅱ Self-study 30

Section Ⅲ Practical Exercises 33

Unit 4 Gas Shielded Arc Welding 35

Section Ⅰ Teaching and Learning 36

Section Ⅱ Self-study 39

Section Ⅲ Practical Exercises 43

Practical Training One 45

Unit 5 Cutting 53

Section Ⅰ Teaching and Learning 54

Section Ⅱ Self-study 59

Section Ⅲ Practical Exercises 62

Unit 6 Nondestructive Testing 64

Section Ⅰ Teaching and Learning 65

Section Ⅱ Self-study 73

Section Ⅲ Practical Exercises 76

Unit 7 Welding Quality Standard—Shipbuilding and Repair Quality Standard for New Construction 78

Section Ⅰ Teaching and Learning 79

Section Ⅱ Self-study 89

Section Ⅲ Practical Exercises 94

Unit 8 Quality Levels for Imperfections—ISO 5817:2007 96

Section Ⅰ Teaching and Learning 97

Section Ⅱ Self-study 107

Section Ⅲ Practical Exercises 116

Practical Training Two 118

Appendix 1 Selective Reading Materials 123

Appendix 2 Terms of Welding 130

Appendix 3 Vocabulary 140

References 152