THERMAL SPRAYING: NEW CONSTRUCTION AND MAINTENANCE

0,47
MB

88
stron

2145
ID UNITED STATES ARMY CORPS OF ENGINEERS

1999
rok

Table of Contents

Chapter 1

Introduction

Purpose 1-1 1-1

Applicability 1-2 1-1

References. 1-3 1-1

Distribution Statement 1-4 1-1

Abbreviations and Acronyms . 1-5 1-1

Neutral Language Use and Terms 1-6 1-1

Scope. 1-7 1-1

Chapter 2

Thermal Spray Fundamentals

Introduction. 2-1 2-1

General Description of Thermal Spraying 2-2 2-1

Characteristics of Thermal Spray Coatings 2-3 2-1

Types of Thermal Spray Coatings 2-4 2-2

Thermal Spray Processes 2-5 2-3

Thermal Spray Uses . 2-6 2-7

Chapter 3

Thermal Spray Materials

Introduction. 3-1 3-1

Specifications . 3-2 3-1

Procurement . 3-3 3-1

Classification. 3-4 3-1

Acceptance . 3-5 3-2

Certification . 3-6 3-2

Sizes 3-7 3-2

Packaging 3-8 3-3

Identification and Marking . 3-9 3-3

Manufacture .3-10 3-3

Testing.3-11 3-3

Chapter 4

Thermal Spray Coating Cost and Service Life

Introduction. 4-1 4-1

Cost . 4-2 4-1

Service Life 4-3 4-2

Chapter 5

Thermal Spray Coating Selection

Introduction. 5-1 5-1

Service Environments 5-2 5-1

Other Considerations in Coating Selection. 5-3 5-4

Thermal Spray Selection for Ferrous Metal Surfaces in Fresh Water. 5-4 5-6

Thermal Spray Selection for Ferrous Metal Surfaces in Seawater . 5-5 5-6

Thermal Spray Selection for Ferrous Metal Surfaces Exposed to the Atmosphere 5-6 5-6

Thermal Spray Selection for Ferrous Metal Surfaces Exposed to High Temperatures. 5-7 5-7

Thermal Spray Selection for Zebra Mussel Protection . 5-8 5-8

Thermal Spray Coatings for Cathodic Protection of Reinforcing Steel in Concrete. 5-9 5-9

Thermal Spray Nonskid Coatings.5-10 5-9

Thermal Spray Coatings for Cavitation/Erosion Protection .5-11 5-9

Thermal Spray Coatings for Partially Submerged Structures .5-12 5-10

Chapter 6

Surface Preparation

Introduction. 6-1 6-1

Solvent Cleaning (SSPC-SP 1). 6-2 6-1

Abrasive Blast Cleaning. 6-3 6-2

Minimizing Surface Preparation Costs . 6-4 6-6

Preparing Heat-Affected Zones 6-5 6-7

Preparing Pitted Steel and Edge Surfaces. 6-6 6-7

Surface Preparation Standards and Specifications 6-7 6-7

Chapter 7

Thermal Spray Coating Application

Introduction. 7-1 7-1

Ambient Conditions Required for Thermal Spray 7-2 7-1

Thermal Spray Application Techniques . 7-3 7-2

Thermal Spray Equipment Operation. 7-4 7-3

Coverage of Thermal Spray Coatings. 7-5 7-5

Sequence of Thermal Spray Application . 7-6 7-5

Chapter 8

Sealing and Painting of Thermal Spray Coatings

Introduction. 8-1 8-1

Purpose of Sealers 8-2 8-1

Characteristics of Sealers . 8-3 8-1

Types of Sealers . 8-4 8-1

Sealing and Painting. 8-5 8-3

Chapter 9

Thermal Spray Coating Inspection and Testing

Introduction. 9-1 9-1

Reference Samples and the Thermal Spray Job Reference Standard 9-2 9-1

Presurface Preparation Inspection 9-3 9-2

Measuring Ambient Conditions Prior to Blasting. 9-4 9-3

Assessing Compressed Air Cleanliness 9-5 9-3

Determining Abrasive Cleanliness . 9-6 9-3

Measuring Blast Air Pressure . 9-7 9-4

Examining the Blast Nozzle Orifice . 9-8 9-4

Evaluating Surface Profile 9-9 9-4

Inspecting Surface Cleanliness.9-10 9-4

Measuring Ambient Conditions Prior to Thermal Spraying .9-11 9-6

Bend Testing to Evaluate Equipment Setup .9-12 9-6

Measuring the Coating Thickness 9-13 9-6

Inspecting the Appearance of the Applied Coating 9-14 9-7

Adhesion Testing for Quality Control 9-15 9-7

Inspecting the Sealer Coating.9-16 9-8

Frequency of Inspection .9-17 9-8

Documentation .9-18 9-9

Chapter 10

Thermal Spray Applicator and Equipment Qualification

Introduction.10-1 10-1

Equipment Qualification Procedure .10-2 10-1

Applicator Qualification Procedure10-3 10-2

Chapter 11

Maintenance of Thermal Spray Coatings

Introduction.11-1 11-1

Assessing the Condition of Thermal Spray Coatings .11-2 11-1

Repair Procedures 11-3 11-1

Repair Sequences .11-4 11-2

Chapter 12

Safety

Introduction.12-1 12-1

Safe Surface Preparation Procedures12-2 12-1

Safe Thermal Spray Procedures .12-3 12-2

Safe Sealing and Painting Procedures 12-4 12-4

Safety Plans and Submittals .12-5 12-4

Material Safety Data Sheets .12-6 12-8

Chapter 13

Environment and Worker Protection Regulations

Introduction.13-1 13-1

Regulations13-2 13-1

Appendix A

References

Appendix B

Glossary

Appendix C

Summary Description of CEGS-09971, “Metallizing: Hydraulic Structures”

Appendix D

USACE Field Experience and Lessons Learned

Subject Index