Naslov
Optimization of the A-TIG welding for stainless steels

Autori
Jurica, Maja ; Kožuh, Zoran ; Garašić, Ivica ; Bušić, Matija

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

Izvornik
IOP Conference Series: Materials Science and Engineering / - , 2018, 1-9

Skup
E-MRS Fall Symposium I: Solutions for Critical Raw Materials Under Extreme Conditions

Mjesto i datum
Varšava, Poljska, 18.09.2017. - 21.09.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
critical raw materials ; duplex stainless steel ; A-TIG

Sažetak
The paper presents the influence of the activation flux and shielding gas on tungsten inert gas (A-TIG) welding of the stainless steel. In introduction part, duplex stainless steel was analysed. The A-TIG process was explained and the possibility of welding stainless steels using the A-TIG process to maximize productivity and the cost-effectiveness of welded structures was presented. In the experimental part duplex, 7 mm thick stainless steel has been welded in butt joint. The influence of activation flux chemical composition upon the weld penetration has been investigated prior the welding. The welding process was performed by a robot with TIG equipment. With selected A-TIG welding technology preparation of plates and consumption of filler material (containing Cr, Ni and Mn) have been avoided. Specimens sectioned from the produced welds have been subjected to tensile strength test, macrostructure analysis and corrosion resistance analysis. The results have confirmed that this type of stainless steel can be welded without edge preparation and addition of filler material containing critical raw materials as Cr, Ni and Mn when the following welding parameters are set: current 200 A, welding speed 9, 1 cm/min, heat input 1, 2 kJ/mm and specific activation flux is used.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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