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Self-shielded arc welding /
A detailed original perspective from a leading expert on welding metallurgy of the self-shielded arc welding process and its applications. The author explains the basic process metallurgy of the process and its relationship with other arc welding processes. He promotes self-shielded arc welding (SSA...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Chichester, England :
Abington Publishing,
1992.
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| Colección: | Woodhead Publishing series in welding and other joining technologies.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Front Cover; Self-Shielded ARC Welding; Copyright Page; PREFACE; Table of Contents; CHAPTER 1. INTRODUCTION; 1.1. General Considerations; 1.2. Process Selection; References; CHAPTER 2. BASICS OF PROCESS METALLURGY; 2.1. Weld Metal Steelmaking in Air; 2.2. Nitrogen as the Contamination Gauging Medium; 2.3. Positions of Different Welding Consumables on the Nitrogen Scale; 2.4. Shielding Capacities of Different Processes; 2.5. Limitations on Gas-Shield Generation in Self-Shielding Wires; 2.6. Core Ingredients in Self-Shielding Wires; 2.7. The Killing Practice.
- 2.8. Effect of Welding Parameters on Nitrogen Pick-Up2.9. Advantages of Relying on Killing; References; CHAPTER 3. SOME ASPECTS OF PHYSICAL METALLURGY; 3.1. Consequences of Heavy Killing on Phase Transformations; 3.2. Microstructure and Toughness; 3.3. Nitrogen and Toughness; 3.4. Non-Metallic Inclusions; 3.5. Aluminium in Weld Metal and Corrosion; References; CHAPTER 4. PROCEDURES FOR HIGH FRACTURE TOUGHNESS; 4.1. Preamble; 4.2. Making the Welds; 4.3. The CTOD Test Results; 4.4. Corroboration of the Fast Travel Speed Thin Layer Stringer Bead Technique; References.
- CHAPTER 5. SPECIFICATIONS FOR SELF-SHIELDING WIRES5.1. Historical Background; 5.2. AWS A5.20 Specification for Carbon Steel Electrodes; 5.3. AWS AS. 29-80 Specification for Low Alloy Steel Electrodes; 5.4. BS. 7084:1989 Specification for Carbon and Carbon-Manganese Steel Electrodes; 5.5. NF A81-350 Specification for Bare Flux-Cored Wires for Unalloyed Steel; 5.6. IIW Draft Specification for Gas-Shielded and Self-Shielded Tubular Cored Wires; 5.7. General Comment; CHAPTER 6. SOME ASPECTS OF PRODUCTION WELDING; 6.1. Logistic Convenience of the SSAW; 6.2. Welding Equipment for the SSAW.
- 6.3. Welder Training for the SSAW6.4. Productivity Benefits; 6.5. Hydrogen Control; 6.6. Root Pass Welding; 6.7. Limitations; References; CHAPTER 7. SPECTRUM OF PROVEN APPLICATIONS; 7.1. Market Share of the SSAW; 7.2. Sheet Metal Work; 7.3. Earth Moving Equipment; 7.4. Rise Buildings, Plant and Bridges; 7.5. Shipbuilding and Dockyard Work; 7.6. Pipelines; 7.7. Offshore Structures; 7.8. Assembly and Erection on Site; References; CHAPTER 8. CONCLUSIONS; Acknowledgements.
- APPENDIX A: Collation of some data on the types and contents of slag, gas and vapour formingingredients and killing agents used in self-shielding tubular/cored wires and published between 1970-1980APPENDIX B: Typical chemical compositions of some all-weld-metals deposited from commercial self-shielded wires for different applications; APPENDIX C: Welding consumables manufacturers and their generic brand names for self-shielding tubular wires; INDEX.