University North. University centre Varaždin. Department of Mechanical Engineering.
Abstract
Ovaj diplomski rad sastavljen je od teorijskog dijela u kojem je opisano zavarivanje raznorodnih čelika u proizvodnji željezničkih komponenti. Objašnjen je odabrani postupak zavarivanja raznorodnih čelika te proces definiranja parametara. Eksperimentalni dio se sastoji od određivanja potrebnih parametara, tehnologije i izvedbe zavarenog spoja nelegiranog općeg konstrukcijskog i austenitnog nehrđajućeg čelika. Prikazane su i navedene greške u zavarenom spoju te je napravljena i prikazana analiza makroizbrusaka zavarenog spoja. Pomoću Schaefflerova dijagrama pretpostavljena je mikrostruktura, te je napravljeno mjerenje tvrdoće i feritometrija.This thesis consists of a theoretical section describing the welding of dissimilar steels in the production of railway components. The selected welding process for dissimilar steels and the procedure for defining the welding parameters are explained. The experimental section involves determining the required parameters, welding technology, and execution of a welded joint between a non-alloy structural steel and an austenitic stainless steel. Welding defects are identified and presented, and a macrographic analysis of the welded joint is conducted and displayed. Using the Schaeffler diagram, the microstructure is predicted, followed by hardness measurement and ferrite content analysis
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