Naslov
Underwater wet welding of duplex steel

Autori
Kralj, Slobodan ; Garašić, Ivica ; Kožuh, Zoran

Izvornik
Welding in the world (0043-2288) 53 (2009); 35-40

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
underwater wet welding ; duplex steel ; microstructure

Sažetak
Due to increased application of duplex steels in off-shore systems there is number of situations where undetwater wet welding is needed for repair and maintenance purposes. However, there is very few investigations found in the literature about this matter. Fast cooling, high diffusible hydrogen, porosity etc. are the common problems when speaking about underwater wet welding. This problems are more sensitive when materials like duplex steel are used. In this article basic issues of underwater wet welding of duplex steels are presented. MMAW processes was used for welding of samples in laboratory conditions. Mechanical and microstructural properties of welds are given. It is shown that if adequate welding parameters and filler materials are used good quality of underwater wet welds on duplex steel is possible to achieve. This work is done under the scientific project «Improvement of underwater welding and inspection» which is performed at Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb and financed by Ministry of science and education, Republic of Croatia.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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