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Welding steels without hydrogen cracking /
A comprehensive guide to avoiding hydrogen cracking which serves as an essential problem-solver for anyone involved in the welding of ferritic steels. The authors provide a lucid and thorough explanation of the theoretical background to the subject but the main emphasis throughout is firmly on pract...
| Clasificación: | Libro Electrónico |
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| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Cambridge :
Woodhead,
�2004.
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| Edición: | 2nd edition rev. |
| 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; Welding Steels Without Hydrogen Cracking; Copyright Page; Table of Contents; Preface; Chapter 1. Defining the problem; Hydrogen-induced cracking in welds; Factors responsible for cracking and their control; Detection and identification; REFERENCES; Chapter 2. Guidance on safe welding procedures by graphical methods; Low hardenability steels; High hardenability steels; The choice of method; Joint simulation testing; Chapter 3. Selecting values for graphical presentation; Chemical composition; Carbon equivalent level; Precision of the CE formulae; Effects of sulphur.
- Welding dissimilar steelsHydrogen potential of the consumable; Selection of carbon equivalent axis; Combined thickness of the joint; Heat input; Preheat and interpass temperature; Postheat; Fit-up; Misalignment; Multirun welds; Tack welds; REFERENCES; Chapter 4 Welding procedures for different steel types; Mild steel; Carbon-manganese steels; Lower carbon, lean alloy steels; Medium carbon and carbon-manganese steels; Alloy steels; High carbon, plain and alloy steels; Machinable grades of steel; REFERENCES; Chapter 5 Removing hydrogen during welding and heat treatment.
- Construction of hydrogen removal curvesSimplification of weld joint geometry; Material thickness; Heat treatment temperature and the choice of value for D; Choice of value for total original hydrogen level; Use of hydrogen removal curves in practice; REFERENCES; Appendix A: Typical hydrogen levels; Introduction; Potential hydrogen levels; Weld metal hydrogen levels; Interpretation of results and their use in practice; Appendix B: Techniques of hydrogen measurement; 1 The determination of moisture in electrode coatings and welding fluxes; 2 The determination of shielding gas moisture content.
- 3 The determination of the hydrogen potential of welding consumables by encapsulation4 The determination of diffusible hydrogen in ferritic steel weld metals; 5 Alternative rapid tests for determination of diffusible hydrogen levels; 6 The determination of residual or total hydrogen in ferritic steel weld metals (Note 6); BIBLIOGRAPHY; NOTES; Glossary; Trade and other names used in the text; Selected bibliography of TWI papers on hydrogen cracking in welding; Index.