Naslov
Utjecaj postupka zavarivanja na tvrdoću u zavarenom spoju
(INFLUENCE OF THE WELDING PROCESS ON THE HARDNESS OF THE WELDED JOINT)

Autori
Kralj, Slobodan ; Bauer, Branko ; Mustapić, Angela

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 15as Jornadas Tecnicas de Soldadura / - Madrid : CESOL, 2004

Skup
15as Jornadas Tecnicas de Soldadura

Mjesto i datum
Madrid, Španjolska, 09.03.2004. - 11.03.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
laser; TIG; heat-treatable steel; welding; welded joint; hardness

Sažetak
Laser and TIG welding processes are suitable for welding of thin sheets. Welding of heat-treatable steels causes substantial increase of the hardness in the welded joint area. Laser and TIG welding differ regarding the power density and heat input into the material. High power density in laser welding allows welding with a lower specific heat input compared to TIG welding, thus resulting in very high cooling rates. Butt welds of 2 mm thick heat-treatable steel sheets 25CrMo4 and 42CrMo4 were welded using laser and TIG processes applying different parameters, using argon and helium as shielding gases. Nd:YAG laser was used. The testing was performed on the geometry of the welded joint, the microstructure and the hardness, and a comparison of the results of laser and TIG welding was carried out.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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