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The results of investigations of resistance to cold cracking of high strength steel welded joints have been presented. The steel used was P460NL1 which is designed to work under pressure. Welding was carried out with coated electrodes (MMA) and flux cored wire by FCAW method. Parameters changed in the implant test were diffusible hydrogen content and weld heat input. Partial resistance to cold cracking of joints for the studied ranges of welding parameters have been shown. Cold cracking resistance decreases with increasing diffusible hydrogen content in the joint and increasing the cooling rate in the HAZ metal measured by cooling time in the temperature range 800-5000C.
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Czasopismo
Rocznik
Strony
20--27
Opis fizyczny
Bibliogr. 15 poz., rys., tab.
Twórcy
autor
- Gdansk University of Technology, Faculty of Mechanical Engineering, Department of Materials and Welding Technology, Narutowicza 11/12, 80-233 Gdansk, Poland, tkozak@pg.gda.pl
Bibliografia
- 1. Butnicki S.: The weldability and fragility of steel, in Polish. WNT, Warszawa, 1991.
- 2. Tasak E.: The weldability of steel, in Polish. FOTOBIT, Kraków, 2002.
- 3. Tasak E.: Mettalurgy of Welding, in Polish. JAK, Kraków, 2008.
- 4. Ranatowski E.: The elements of metal joining, In Polish. Wyd. Akademii Techniczno-Rolniczej, Bydgoszcz, 1999.
- 5. Łomozik M., Dębski E.: The determining the causes and nature of cracks in ship hull welded joints, in Polish. Biuletyn Instytutu Spawalnictwa 3 (2000).
- 6. Kozak T.: Delayed cracking in terms of fracture mechanics, In Polish. Biuletyn Instytutu Spawalnictwa 6 (200).
- 7. Welding. Testing methods of welded joints. Susceptibility to cold cracking, in Polish. PN-90/M-69760.
- 8. Sitko J.: Effect of moisture and drying parameters on diffusible hydrogen content in weld metal from basic electrodes. Przegląd Spawalnictwa 3 (1987).
- 9. Opatrny-Myśliwiec D.: The measurement of diffusible hydrogen content in joints depending on type and condition of the electrode in manual arc, In Polish. Politechnika Gdańska. Gdańsk. 1980, materiały niepublikowane.
- 10. Determination of the total amount of hydrogen in steel weld metal for acid, rutile or basic, in Polish. BN-64/4130.
- 11. The rules for classification and construction of seagoing vessels. Part IX Mmaterials and, in Polish. PRS, Gdańsk, 2002.
- 12. Mazur M., Grela P.: Comparative studies of the weld metal diffusible hydrogen for glycerin and mercury methods, in Polish. Biuletyn Instytutu Spawalnictwa 1 (2002).
- 13. Changying T. i inni: The investigation of Implant Cold Cracking Test. IIW-Doc. IX-1729-94.
- 14. Mikuła J.: Application of computational methods in assessing the weldability of steel - indices of weldability, in Polish. Przegląd Spawalnictwa 8 (1993).
- 15. Welding. Recommendations for Welding of metallic materials – Part 2: Arc Welding of ferritic steel. EN 1011-2:2001.
Typ dokumentu
Bibliografia
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bwmeta1.element.baztech-article-BPG8-0055-0003