Analysis of the process of qualifying the welding technology of S355JR structural steel using the submerged arc welding method

• Autorzy: Wieczorska A. , Labuda W.

Identyfikatory

DOI

10.5604/01.3001.0053.7287

• Języki publikacji: EN

Abstrakty

EN

Purpose This paper presents the issue of welding technology qualification using the example of structural steel S355JR with a plate thickness of 25 mm and 100 mm, bevelling ½V. The main objective of this work was to attempt to perform a full qualification of the submerged arc welding process in accordance with the requirements of PN EN ISO 15614. Particular attention was paid to the issue of the qualification of welding technology. The samples were subjected to non-destructive testing, i.e. visual and penetrant testing, as well as ultrasonic testing and heat treatment. This was followed by destructive testing, including macroscopic testing and hardness testing. According to the proposed procedure for the recognition of submerged arc welding technology, once the necessary tests had been carried out and the protocols with positive results had been obtained. The documentation had been completed, the analysis needed to obtain certificates of conformity for factory production control and welding quality was carried out. Design/methodology/approach Submerged arc welding is often used for highly responsible butt joints, particularly when joining thick components. This has been achieved through the proper design of the preparation of the parts to be welded and the development of a welding technology that practically eliminates the pre-phase that occurs in traditional technology, thereby eliminating the risk of it affecting the quality of the welded joint. Findings During the implementation of submerged arc welding, a number of technological problems were encountered. The first test joints contained many defects, i.e. sticking and slag inclusions inside the welds. In addition, obtaining welds with the correct profile and removing the slag from the weld groove was difficult. These obstacles were eliminated experimentally by carrying out successive tests using different parameters and welding groove geometries. Practical implications The correct implementation of any welding process depends on its input parameters. These parameters include welding current, welding speed, welding current, wire diameter, welding voltage and many others. Submerged arc welding (SAW) is widely used in the industry for manufacturing as it is more reliable, provides deep penetration in the work, ensures a smooth finish on objects, and results in high productivity. Originality/value The technology was developed for a company that manufactures control discs for steam turbines.

Słowa kluczowe

EN

welding technology qualification; welding quality; S355JR steel; submerged arc welding

PL

spawanie; kwalifikacja technologiczna; jakość spawania; stal S355JR; spawanie łukiem krytym

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2023
• Tom: Vol. 118, nr 1
• Strony: 18--27
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Wieczorska A.

• Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland

• https://orcid.org/0000-0002-6196-7915

autor

Labuda W.

• Gdynia Maritime University, Morska 81-87, 81-225 Gdynia, Poland

• https://orcid.org/0000-0002-8589-8053

Bibliografia

• [1] M. Cecotka, M. Wnuk, Application of the narrow-slot welding method in the power industry, Przegląd Spawalnictwa ‒ Welding Review 86/7 (2014) 17-21 (in Polish).
• [2] G.M. Grigorenko, W.A. Kostin, Weldability of steel and criteria for its assessment. Przegląd Spawalnictwa ‒ Welding Review 85/7 (2013) 11-17 (in Polish).
• [3] PN-EN ISO 15614-1:2017: Specification and qualification of welding technologies for metals - Welding technology testing, PKN, Warsaw, 2017 (in Polish).
• [4] N. Gawroniak, Fundamentals of welding, Gdansk University of Technology Publishing House, Gdańsk 2004 (in Polish).
• [5] W.R. Gundlach, Fundamentals of flow machines and their energy systems, WNT, Warsaw, 2008 (in Polish).
• [6] Ł. Sadowski, Using the latest steels for supercritical supercritical in power units energy blocks, Paliwa i Energetyka ‒ Fuels and Energy 03 [14] (2015) 46-50 (in Polish).
• [7] A. Wieczorska, N. Abramczyk, Developing technology for the welding of steam turbine steering diaphragms using the submerged arc welding method, Journal of KONBiN 52/3 (2022) 233-245. DOI: https://doi.org/10.2478/jok-2022-0035
• [8] A. Wieczorska, R. Domżalski, The influence of submerged arc welding conditions on the properties of S355JR structural steel joints, International Journal of Mechanical Engineering and Technology (IJMET), 12/12 (2021) 19-29.
• [9] J. Łabanowski, K. Samson, Investigations of dissimilar stainless steels welded joints for chemical tankers construction, 2005.
• [10] O.K. Makowieckaja, Current situation on the market of main con struction materials and welding technology. Development perspectives, Bulletin of the Institute of Welding 55/4 (2011) 39-52 (in Polish).
• [11] R. Krawczyk, An analysis of the joints' properties of fine-grained steel welded by the MAG and SAW methods, Archives of Metallurgy and Materials 61/3 (2016) 1641-1648. DOI: https://doi.org/10.1515/amm-2016-0266
• [12] J. Pilarczyk, Engineer's Handbook Welding, WNT, Warsaw, 2005 (in Polish).
• [13] PN-EN ISO 14171:2016-10: Welding consumables - Solid electrode wires, powder electrode wires and electrode/melt combinations for submerged arc welding of unalloyed and fine grain steels – Classification, PKN, Warsaw, 2016.
• [14] PN-EN 24063:1993: Welding, welding and brazing of metals - List of methods and their numerical designations used in the conventional representation of joints on drawings, PKN, Warsaw, 1993 (in Polish).
• [15] PN-EN ISO 5817: 2014-05: Welding -Welded joints of steel, nickel, titanium and their alloys (except beam-welded) - Class levels according to welding imperfections, PKN, Warsaw, 2014 (in Polish).
• [16] PN-EN ISO 3452-1:2021-12: Non-destructive testing of welds - Penetration testing - Levels of acceptance, PKN, Warsaw, 2021.
• [17] PN-EN ISO 16810:2014-6: Non-destructive testing - Ultrasonic testing - General principles, PKN, Warsaw, 2014.
• [18] PN-EN ISO 16811:2014-6: Non-destructive testing - Ultrasonic testing - Setting sensitivity and observation range, PKN, Warsaw, 2014.
• [19] PN-EN ISO 4136:2013-05: Destructive testing of welded metal joints - Tensile testing of transverse specimens, PKN, Warsaw, 2013 (in German).
• [20] PN-EN ISO 9016:2013-5: Destructive testing of welded metal joints - Impact testing - Specimen location, notch direction and testing, PKN, Warsaw, 2013.
• [21] PN-EN ISO 5173:2010/A1:2012: Destructive testing of welds in metallic materials - Bending test, PKN, Warsaw, 2012.
• [22] PN-EN ISO 17639:2013-12: Destructive testing of welded metal joints -Macroscopic and microscopic testing of welded joints, PKN, Warsaw, 2013.
• [23] PN-EN ISO 6520-1:2009: Welding and allied processes - Classification of geometrical welding inconsistencies in metals, PKN, Warsaw, 2009 (in Polish).
• [24] PN-EN ISO 6507-1:2007: Metals - Measurement of hardness by the Vickers method -Part 1: Test method, PKN, Warsaw, 2007 (in Polish).
• [25] PN-EN ISO 9015-1:2011: Destructive testing of welded metal joints - Hardness testing - Part 1: Hardness testing of arc-welded joints, PKN, Warsaw, 2011 (in German).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).