Research on the quality of welded joints of P265GH heat-resistant steel pipes at electron beam mechanized welding

Authors

DOI:

https://doi.org/10.24193/subbeng.2020.1.2

Keywords:

pipes, heat-resistant steel, quality, creeping strength.

Abstract

This paper analyzes the quality of welded joints of high temperature resistant steel pipe at electron beam welding, knowing that the mechanical properties of these types of steels are influenced by the interaction of different processes specific to physical and mechanical metallurgy. Analyzing the values of the local hardening estimator ΔHV10 calculated between the characteristic areas of welded joints, it is observed that it has a decreasing tendency at thermally de-stressed joints, in all areas of the welded joints, especially in the welded seam.

References

Voiculescu I., Rontescu C., Dondea L.I., Metalografia îmbinărilor sudate, Editura Sudura, Timișoara, 2010, pp. 11-20.

Adam W., Mischok W., Welnitz G., Zeshav M., Niederhoff K., Experienţa acumulată la sudarea oţelurilor CrMoVNb termorezistente cu 9 %Cr - Stadiul de dezvoltare a elaborării noilor generaţii de materiale termorezistente, Conferinţa A.S.R. - 2004, Constanţa, sept. 15 – 17, 2004, pp. 255 – 266.

Sammons M., How to Cup Walk - An Interesting Pipe Welding Technique Provides Arc Stability and More Operator Confort Than traditional GTA Methods, Welding Journal, June 2005, pp. 42 - 43.

Martinec J., Plihal A., Materiale de sudare adecvate lucrului la temperaturi înalte, ESAB News, Nr. 1, 2007, pp. 6 – 7.

Pascu D.R., ş.a., Cercetări experimentale pentru evaluarea degradării structurale a echipamentelor industriale ce lucrează la presiuni şi temperaturi ridicate, folosind tehnica replicilor metalografice conform ISO 3057, Raport de cercetare, 2005, ISIM Timişoara.

Luca R., Method for the Measurement of the Temperature During the Stress Relieving Thermal treatment, Sudura, Nr. 2, 2000, pp. 40 - 44.

Irimia I., Consideraţii asupra sudabilităţii oţelurilor carbon şi slab aliate, folosite în centralele electrice de termoficare - CET-uri, Conferinţa Internaţională ASR Realizări şi perspective în fabricarea structurilor sudate pentru medii urbane, Bucureşti, sept. 28 – 30, 2003, pp. 288 - 296.

Mateiu H.Şt., Fleşer T., Experimental Researches for the Crack Propagation Under Creep of the Thermoresistant Steels, Sudura, Nr. 4, 2002, pp. 11 - 16.

Pascu D.R., ş.a., Cercetări experimentale pentru evaluarea degradării structurale a echipamentelor industriale ce lucrează la presiuni şi temperaturi ridicate, folosind tehnica replicilor metalografice conform ISO 3057, Raport de cercetare, 2005, ISIM Timişoara.

STUDIA UBB ENGINEERING, Volume 65 (LXV), No. 1, November 2020

Downloads

Published

2020-11-23

How to Cite

CÎNDEA, L., & IANCU, V. (2020). Research on the quality of welded joints of P265GH heat-resistant steel pipes at electron beam mechanized welding. Studia Universitatis Babeș-Bolyai Engineering, 65(1), 21–28. https://doi.org/10.24193/subbeng.2020.1.2

Issue

Volume 65, No. 1, November 2020

Section

Articles

License

Copyright (c) 2020 Studia Universitatis Babeș-Bolyai Engineering

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Most read articles by the same author(s)