지역난방 열수송관 국부 부식 파손 분석
Failure Analysis on Localized Corrosion of Heat Transport Pipe in District Heating System
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초록
In this study, a corrosion failure analysis of a heat transport pipe was conducted, as the result of a pinholeleak. Interestingly, the corrosion damage occurred externally in the pipeline, resulting in severe thicknessreduction near the seam line. Also, while a stable magnetite protective film formed on the inner surface,the manganese oxide formation occurred only on the outer surface. The interior and exterior of the pipewere composed of ferrite and pearlite. The large manganese sulfide and alumina inclusions were foundnear the seam line. In addition, the manganese sulfide inclusions resulted in grooving corrosion, which progressedin the seam line leading to the reduction in the thickness, followed by the exposure of the alumina inthe matrix to the outer surface. To note, the corrosion was accelerated by pits generated from the boundariesseparating the inclusions from the matrix, which resulted in pinhole leaks and water loss.
Abstract
In this study, a corrosion failure analysis of a heat transport pipe was conducted, as the result of a pinholeleak. Interestingly, the corrosion damage occurred externally in the pipeline, resulting in severe thicknessreduction near the seam line. Also, while a stable magnetite protective film formed on the inner surface,the manganese oxide formation occurred only on the outer surface. The interior and exterior of the pipewere composed of ferrite and pearlite. The large manganese sulfide and alumina inclusions were foundnear the seam line. In addition, the manganese sulfide inclusions resulted in grooving corrosion, which progressedin the seam line leading to the reduction in the thickness, followed by the exposure of the alumina inthe matrix to the outer surface. To note, the corrosion was accelerated by pits generated from the boundariesseparating the inclusions from the matrix, which resulted in pinhole leaks and water loss.
참고문헌 (25)
- 홍민기, "지역난방 시스템의 순환수에 따른 보일러 튜브의 부식 특성", CORROSION SCIENCE AND TECHNOLOGY, 17(6), pp.287~291 (2018), 한국부식방식학회[DOI]
- 김영수, "지역난방 첨두부하보일러 대류부 부식 파손 분석", CORROSION SCIENCE AND TECHNOLOGY, 18(2), pp.55~60 (2019), 한국부식방식학회
- 홍민기, "지역난방 배열 회수 보일러의 유동 가속 부식 원인 고찰", 한국재료학회지, 29(1), pp.11~15 (2019), 한국재료학회[DOI]
- R. Ebara, "Sulfuric acid dew point corrosion in waste heat boiler tube for copper smelting furnace", Engineering Failure Analysis, 33, pp.29~36 (2013), Elsevier BV[DOI]
- Minki Hong, "Failure Analysis of a Water Wall Boiler Tube for Power Generation in a District Heating System", Metals and Materials International, 25(5), pp.1191~1201 (2019), 대한금속·재료학회[DOI]
- Yoon-Suk Chang, "Fatigue data acquisition, evaluation and optimization of district heating pipes", Applied Thermal Engineering, 27(14-15), pp.2524~2535 (2007), Elsevier BV[DOI]
- H. Lund, "The role of district heating in future renewable energy systems", Energy, 35(3), pp.1381~1390 (2010), Elsevier BV[DOI]
- Poul Alberg Østergaard, "A renewable energy system in Frederikshavn using low-temperature geothermal energy for district heating", Applied Energy, 88(2), pp.479~487 (2011), Elsevier BV[DOI]
- Henrik Gadd, "Daily heat load variations in Swedish district heating systems", Applied Energy, 106, pp.47~55 (2013), Elsevier BV[DOI]
- D. Connolly, "Heat Roadmap Europe: Combining district heating with heat savings to decarbonise the EU energy system", Energy Policy, 65, pp.475~489 (2014), Elsevier BV[DOI]
- "KS D 3562, Carbon Steel Pipes for Pressure Service", ~ (2019)
- Hobyung Chae, "Stress Corrosion Cracking of a Copper Pipe in a Heating Water Supply System", Metals and Materials International, 26(7), pp.989~997 (2020), 대한금속·재료학회[DOI]
- C. Kato, "Grooving corrosion in electric resistance welded steel pipe in sea water", Corrosion Science, 18(1), pp.61~74 (1978), Elsevier BV[DOI]
- S.J. Luo, "Identification of the selective corrosion existing at the seam weld of electric resistance-welded pipes", Corrosion Science, 87, pp.517~520 (2014), Elsevier BV[DOI]
- B. Kim, , Adv. Mater. Sci. Eng, 13 (2018)[DOI]
- R. M. Cornell, "The influence of some divalent cations on the transformation of ferrihydrite to more crystalline products", Clay Minerals, 23(3), pp.329~332 (1988), Mineralogical Society[DOI]
- R.M. Cornell, "The influence of copper on the transformation of ferrihydrite (5Fe2O3 · 9H2O) into crystalline products in alkaline media", Polyhedron, 7(5), pp.385~391 (1988), Elsevier BV[DOI]
- Zongyue Bi, "Grooving corrosion of oil coiled tubes manufactured by electrical resistance welding", Corrosion Science, 57, pp.67~73 (2012), Elsevier BV[DOI]
- P.C. Chung, "Effects of post-weld heat treatment cycles on microstructure and mechanical properties of electric resistance welded pipe welds", Materials & Design, 34, pp.685~690 (2012), Elsevier BV[DOI]
- Maksudur Rahman, "Evaluation of Grooving Corrosion and Electrochemical Properties of H2S Containing Oil", Gas Transportation Pipes Manufactured by Electric Resistance Welding, 2018, pp.17(3), 109~115[DOI]
- Q. Meng, "Stainless-steel corrosion and MnS inclusions", Nature, 424(6947), pp.389~390 (2003), Springer Science and Business Media LLC[DOI]
- Katsunari Oikawa, "The Control of the Morphology of MnS Inclusions in Steel during Solidification.", ISIJ International, 35(4), pp.402~408 (1995), Iron and Steel Institute of Japan[DOI]
- Chao Liu, "Role of Al2O3 inclusions on the localized corrosion of Q460NH weathering steel in marine environment", Corrosion Science, 138, pp.96~104 (2018), Elsevier BV[DOI]
- Qing Liu, "Pitting Corrosion of Steel Induced by Al2O3 Inclusions", Metals, 7(9), pp.347~ (2017), MDPI AG[DOI]
- Chao Liu, "Title Synergistic Effect of Al2O3 Inclusion and Pearlite on the Localized Corrosion Evolution Process of Carbon Steel in Marine Environment", Materials, 11(11), pp.2277~ (2018), MDPI AG[DOI]