Author(s):
1. Vukić Lazić, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
2. Srbislav Aleksandrovic, Fakultet inženjerskih nauka Univerziteta u Kragujevcu, Serbia
3. Dragan Milosavljevic, Faculty of Engineering, University of Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Srbija 2IMW Ins, Serbia

Abstract:
High strength steels belong into a group of high quality steels, with exceptional mechanical properties, especially in regards with tensile strength. At the same time, as their deficiency is emphasized the limited and difficult weldability. In other words, some of those steels are weldable only with application of special measures related to controlled heat input. In that way the favorable mechanical properties can be kept within the heat affected zone, with condition that the optimal welding technology is selected. Existing, very scarce and often unclear and insufficient recommendations for selection of the optimal welding technology are one of the causes of large number of flaws in welded joints. Mentioned problems as well as others can be successfully solved by proper selection of the procedure, filler metal and technology of welding, verified by experiments conducted in laboratory or real operating conditions. Those experiments can not be performed in arbitrary conditions, but partially due to this paper, technologists will obtain the possibility to predict in advance, in very short time period, the mechanical and metallurgical properties of joints of this class of high strength steels, without conducting large number of practical tests or relying on personal experience of a designer.

Key words:
high strength steel S690QL, welding technology, welding parameters

Thematic field:
PRODUCTION TECHNOLOGIES AND ENGINEERING

Date of abstract submission:
15.02.2013.

Number of visits:
251

Conference:
DEMI 2013