Hydroblasting and Coating of Steel Structures (eBook)

Cover 1
Copyright Page 5
Contents 6
List of Symbols and Abbreviations Used 8
Chapter 1. Introduction 12
1.1 Definitions of surfaces and preparation methods 13
1.2 Importance of surface preparation processes 16
1.3 Subdivision of water jets 19
1.4 Industrial applications 20
Chapter 2. Fundamentals of Hydroblasting 28
2.1 Properties and structure of high-speed water jets 29
2.2 Basic processes of water drop impact 35
2.3 Parameter influence on the coating removal 40
2.4 Models of coating removal processes 49
Chapter 3. Hydroblasting Equipment 56
3.1 High-pressure water jet machines 57
3.2 Pressure generator 58
3.3 High-pressure hoses and fittings 66
3.4 Hydroblasting tools 70
3.5 Nozzle carriers 74
3.6 Hydroblasting nozzles 77
3.7 Vacuuming and water treatment systems 84
Chapter 4. Steel Surface Preparation by Hydroblasting 88
4.1 Efficiency of hydroblasting 89
4.2 Cost aspects 95
4.3 Problems of disposal 98
4.4 Safety features of hydroblasting 105
Chapter 5. Surface Quality Aspects 124
5.1 Surface quality features 125
5.2 Adhesion strength 125
5.3 Flash rust 132
5.4 Non-visible contaminants– salt content 137
5.5 Embedded abrasive particles 144
5.6 Wettability of steel substrates 147
5.7 Roughness and profile of substrates 149
5.8 Aspects of substrate surface integrity 155
Chapter 6. Hydroblasting Standards 160
6.1 Introduction 161
6.2 Initial conditions 162
6.3 Visual surface preparation definitions and cleaning degrees 163
6.4 Non-visible surface cleanliness definitions 165
6.5 Flash rusted surface definitions 166
6.6 Special advice 168
Chapter 7. Alternative Developments in Hydroblasting 170
7.1 Pulsed liquid jets for surface preparation 171
7.2 Hydro-abrasive jets for surface preparation 180
7.3 High-speed ice jets for surface preparation 187
7.4 Water jet/ultrasonic device for surface preparation 192
References 194
Appendix 210
Index 214