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Dive into the research topics where Ivan Opačak is active.

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Featured researches published by Ivan Opačak.


Applied Mechanics and Materials | 2015

Pipes Life Prolonging Possibility in Boilers Fired up by Municipal Waste

Vlatko Marušić; Sergiy Kovalevskyy; Ivan Samardžić; Ivan Opačak; Luka Marušić

This paper describes the specifics of the waste incineration boiler with natural circulation fueled with municipal waste. During operation, certain parts of the boiler are exposed to corrosion and erosion due to effect of particles from the flue gas stream at high temperature. Tests have been performed which include sediment and pipe damage after one year of boiler work. Chemical analysis of sediment samples was taken from the tubes was determined presence of NaCl and Fe compounds and share from 18 % organic substances in the presence of SO3.


Metalurgija | 2018

Research into possibilities of reducing the X155CrVMo12-1 tool steel fragility

Vlatko Marušić; Andrijana Milinović; Ivan Opačak; I. Putnik


MATEC Web of Conferences | 2018

The possibility of extending work time of tribocouple welding improved stainless steel with improved carbon steel

Vlatko Marušić; Predrag Dašić; Ivan Opačak


International journal for science, technics and innovations for the industry "MACHINЕS. TECHNOLОGIES. MATERIALS" | 2018

The laboratory testing of steel 20MnCr5

Ivan Opačak; Alen Marić; Predrag Dašić; Vlatko Marušić


Zbornik sažetaka radova 31. međunarodnog znanstveno-stručnog susreta stručnjaka za plin | 2017

Baždarenje plinomjera i periodički pregledi plinskih instalacija

Ivan Opačak; Vlatko Marušić; Anto Ravlić; Josip Jukić


Zbornik radova 5. MEĐUNARODNOG KONGRESA DANI INŽENJERA STROJARSTVA | 2017

Efekti modernizacije kotlovnica u Slavonskom Brodu

Ivan Opačak; Anto Ravlić; Vlatko Marušić


Proceedings of the International conference on materials, corrosion, heat treatment, testing and tribology (MTECH-2017) | 2017

Specifical properties of 13CrMo4-5 boiler steel

Valnea Starčević; Ivan Opačak; Ivan Putnik; Ivan Grgić; Vlatko Marušić; Vladimir Pecić; Željko Ivandić


Proceedings of the International conference on materials, corrosion, heat treatment, testing and tribology (MTECH-2017) | 2017

Experimental and numerical modeling of tensile and bend testing of 13CrMo4-5 boiler steel

Ivan Grgić; Ivan Putnik; Ivan Opačak; Valnea Starčević; Željko Ivandić; Ivan Samardžić


Metalurgija | 2017

Influence of ploughshare surface layers on ploughing efficiency

Zvonko Horvat; Vlatko Marušić; Ivan Samardžić; Ivan Opačak


Proceedings of the 6th International Conference "Economics and Management - Based on New Technologies" (EMoNT-2016) | 2016

Advantages and disadvantages of a laboratory accreditation according to HRN EN ISO/IEC 17025

Vlatko Marušić; Andrijana Milinović; Ivan Opačak; Olivia-Silvana Prlić; Dejan Šakić

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Vlatko Marušić

Josip Juraj Strossmayer University of Osijek

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Ivan Samardžić

Josip Juraj Strossmayer University of Osijek

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Andrijana Milinović

Josip Juraj Strossmayer University of Osijek

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Goran Rozing

Josip Juraj Strossmayer University of Osijek

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I. Putnik

Josip Juraj Strossmayer University of Osijek

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Valnea Starčević

Josip Juraj Strossmayer University of Osijek

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Željko Ivandić

Josip Juraj Strossmayer University of Osijek

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Bogdan Nedić

University of Kragujevac

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