Technology of weldIng joInTs mIxed wITh duPlex sTeelResults of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.

Ključne reči: zavarivanje, dupleks čelici, mešani spojevi Key words: welding, duplex steel, mixed jointsResults of the examinations of sample plates of mixed joints with the duplex steel were discussed. Examinations were taken on the sample plates of mixed joints of sheet plates type P355NL1 and X2CrNiMoN22-5-3 welded by the flux-cored wire DW-329A by the Kobelco company of the following category T 22 9 3 NL RC/M3 in the gas shroud M21 (Ar+18%CO2) (plate no.1), and nickel covered electrodes E Ni 6082 by the Böhler company (plate no. 2). Results of the side bend test of welded joint, transverse tensile test, stretching of the weld metal, impact strength, micro and macroscopic metallographic examinations, and measurements of the delta ferrite content were presented.Diskutovano je o rezultatima ispitivanja uzoraka ploča mešanih spojeva sa dupleks čelikom. Ispitivanja su sprovedena na pločastim uzorcima mešanih spojeva od limova tipa P355NL1 i X2CrNiMoN22-5-3 zavarenih punjenom žicom DV-329A kompanije Kobelco iz sledeće kategorije T 22 9 3 NL RC / M3 u zaštiti gasne mešavine M21 (Ar + 18% CO2) (ploča br. 1) i obloženom elektrodom od nikla E Ni 6082 kompanije Bohler (ploča broj 2). Prikazani su rezultati ispitivanja bočnog savijanja zavarenog spoja, poprečnog zatezanja, istezanja metala šava, udarne žilavosti, mikro i makroskopskih metalografskih pregleda i merenja sadržaja delta ferita.