Analysis of Damage of Solder Joint of Heat Exchanger

Abstract:

The paper focus on the metallographic analysis of damaged heat exchanger made of high‑alloy austenitic steel by soldering. The object in question is a soldered joint of main mounting plate of the heat exchanger and first heat exchanging plate of it. In this part of the heat exchanger after the vibration and pressure test crack appeared. The subject of the analysis is the evaluation of the microstructure of the solder joint (high-alloy austenitic steel and copper), and evaluation of the appeared crack. The problematic is solved with aid of metallographic analysis of the microstructure of the material, using light microscopy and scanning electron microscopy and the EDS microanalysis of chemical composition.

• Periodical: Solid State Phenomena (Volume 270)
• Pages: 63-67
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.270.63
• Online since: November 2017
• Authors: Pavel Gejdoš*, Lenka Klakurková, Martin Juliš, Miroslava Horynová, Lucie Páleníková, Jiří Švejcar
• Keywords: Copper, Heat Treatment, High-Alloy Austenitic Steel, Microstructure, Soldering

References

[1] T. Kuppan, Heat exchanger design handbook. Second edition. Boca Raton: CRC Press, 2013. ISBN 9781439842126.

[2] ČSN EN 10088-2. Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes. (2005).

DOI: 10.3403/30254172

[3] Y. Chen, J. Liu,Y. Li, J. Wu, M. Lai Mingdao, Composition and microstructure of brazing joint of triple wall brazed tube, Iron & Steel 11 (1997) 98-115.