Brod University of Osijek

Slavonski Brod, Croatia

Brod University of Osijek

Slavonski Brod, Croatia
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Samardzic I.,Brod University of Osijek | Bajic D.,University of Montenegro | Klaric S.,Brod University of Osijek
Metalurgija | Year: 2010

In this paper, the influence of the activating flux on the weld joint properties at the drawn arc stud welding process with ceramic ferrule is analysed. In the experimental part of the paper, the arc stud welding process is applied with the application of the activating flux for ATIG process. In order to evaluate the influence of the activating flux on the welding process parameters variations, the main welding parameters were monitored by an on-line monitoring system. Besides monitoring of welding current and voltage, the influence of the activating flux on the weld joint appearance is investigated. The macrosections of the weld joints welded with the same parameters, but with and without the presence of activating flux are shown.


Matesa B.,Brod University of Osijek | Samardzic I.,Brod University of Osijek | Dunder M.,University of Rijeka
Metalurgija | Year: 2014

The specimens of damaged tubes, ASTM A297 HK 40, are repaired by welding. Before repairing, solution annealing is used as a procedure for properties restitution. This paper explores the influence of used solution annealing procedure (1 050 °C/2h) on mechanical and micro-structural properties. The emphasis is put on specific procedures at repair by welding.


Matesa B.,Brod University of Osijek | Samardzic I.,Brod University of Osijek | Dunder M.,Brod University of Osijek
Metalurgija | Year: 2012

Shielded metal arc (SMAW) welded specimens using austenitic consumable materials with diffeerent amount of delta-ferrite are annealed in range 650-750 oC through 2-10 hours. Factorial plan 3 3 with influenced factors regression analyse of measured delta-ferrite values is used. The transformation i.e. decomposition of delta ferrite during annealing was analysed regarding on weld cracking resistance using metallographic examination and WRC-1992 diagram.

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