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Mechanical engineering: Manufacturing Technology
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2020RW Maladzhi
Manufacturing Technology l
(MTC1501-SG01-2020)
University of South Africa
Florida
College of Science, Engineering
& Technology
,© 2 0 1 8 University of South Africa
All rights reserved
Printed and published by the
University of South Africa
Muckleneuk, Pretoria
MTC1501/1/2019–2020
70657939
InDesign
PR_Tour_Style
, CONTENTS
Page
FOREWORD v
Study unit 1: Health and safety in an engineering environment 1
1.1 Introduction 1
1.2 Shop-floor hazards and their sources 2
1.3 Accidents in the workplace 4
1.4 Methods to prevent accidents 5
1.5 General safety guidelines 6
Study unit 2: Developing yourself and working with other people on
engineering activities 16
2.1 Introduction 16
2.2 Developing yourself 16
2.3 Organisational structure 18
2.4 Developing training plans 19
2.5 Dress, presentation and behaviour 20
2.6 Time keeping 22
2.7 Working with other people 23
Study unit 3: Engineering materials 36
3.1 Introduction 36
3.2 Classification of engineering materials 37
3.3 Properties of engineering materials 39
3.4 Selection of engineering materials 41
3.5 Classes of metals 42
3.6 The material cycle 46
Study unit 4: Metals manufacturing – iron and steel production 49
4.1 Introduction 49
4.2 Iron ores and other raw materials 49
4.3 Limitations of iron ore 50
4.4 Production of iron 50
4.5 Production of steel 52
4.6 Heat treatment processes 53
Study unit 5: Checking workpieces for accuracy 57
5.1 Introduction 57
5.2 Measuring instruments 58
Study unit 6: Marking out for engineering activities 66
6.1 Introduction 66
6.2 Marking out tools 67
Study unit 7: Fitting using hand skills 72
7.1 Introduction 72
7.2 Fitting hand tools 72
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, C O N TE N TS
Study unit 8: Cutting tools 84
8.1 Introduction 84
8.2 The cutting tool 84
8.3 Metal-cutting mechanism 84
8.4 Tool materials 86
8.5 Types of tools 89
8.6 Tool geometry 90
8.7 Types of chips 91
8.8 Cutting fluids 92
Study unit 9: Turning operations on the centre lathe 95
9.1 Introduction 95
9.2 The centre lathe and its basic parts 95
9.3 Types of lathes 96
9.4 Size of a lathe 97
9.5 Work holding devices on the lathe 97
9.6 Basic operations on the lathe 98
9.7 Computerised numerical control lathe (CNC lathe) 100
Study unit 10: Milling machines 102
10.1 Introduction 102
10.2 Basic components of a milling machine 102
10.3 Classification of milling machines 103
10.4 Work holding devices on milling machines 105
10.5 The milling process 105
Study unit 11: Drilling operations 107
11.1 Introduction 107
11.2 Types of drilling machines 107
11.3 Cutting conditions during drilling operations 110
11.4 Hole-cutting tools 112
11.5 More operations closely related to drilling 114
Study unit 12: Problem-solving in the engineering profession 116
12.1 Introduction 116
12.2 Stages of problem-solving in engineering 116
12.3 Stages of solving a design problem 117
REFERENCES 120
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iv
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