In this work, industrial control technical measurements of the heat treatment of high chromium steel (HCS) rolls is presented.Measurements were carried out on the gas fired car bottom chamber furnace Bosio PP-KP 70/1150 in the company Valji d.o.o., Štore, Slovenia. Temperature measurements of the individual heating zones of the furnace, roll...

By Blaž Karpe, Simon Rečnik, Aleš Nagode, Borut Kosec, Sergej Novak, Stjepan Kožuh

FeCrAl alloys have good oxidation resistance at elevated temperature owing to the formation of a continuous Al2O3 surface film, which acts as an oxygen diffusion barrier. The aim of the present study was to investigate the early stages of protective oxide layer formation and its growth on specially prepared commercial FeCrAl alloys, Kanthal AF (K-A...

By Stojana Veskovič, Milan Bizjak, Blaž Karpe, Aleš Nagode, Samo Smolej, Janez Kovač, Gorazd Kosec

Shape memory alloys (SMAs) belong to the group of advanced functional materials for numerous technical applications. Among many known Cu-based shape memory alloys, Cu–Al–Mn ternary alloys are characterized by a combination of good shape memory properties and excellent ductility which makes them commercially attractive.In this work the C...

By Dragan Manasijević, Tamara Holjevac-Grgurić, Ljubiša Balanović, Uroš Stamenković, Radiša Todorović, Milan Gorgievski1, Mirko Gojić

Samples based on talc with 15 % of zeolite from Zlatokop, Serbia, sintered at 1200 ºC were prepared and tested in condition of cavitation erosion. The ultrasonic vibratory cavitation set up with stationary specimen was used. Mass loss was measured and degradation level of the samples using image analysis and Young modulus of elasticity was mon...

By Jelena Majstorović, Sanja Martinović, Milica Vlahović, Marina Dojčinović, Marko Pavlović, Tatjana Volkov Husović

The paper examined the conventional castables composed of a mixture of high aluminate cement with 70% Al2O3, chamotte waste with 42% Al2O3 and brick clay ,,Rapajlo“. The influence of particle size distribution on density, porosity, water absorption, modulus of rapture and cold crashing strength was investigated. Particle size distribution was...

By Marina Jovanović, Adnan Mujkanović, Nadira Bušatlić

The physical-mechanical properties of concrete with nanosilica were experimentally studied. Nanosilica in powder form was used as a partial replacement of cement at dosage of 3 and 6 wt.%. The experimental results show that the compressive strengths of concretes with nanosilica particles were all higher than those of reference concretes at ages 1, ...

By Adnan Mujkanović, Marina Jovanović, Amel Zahirović

Parameter monitoring and testing of explosive substances under certain conditions, as well as control of raw materials used in the production process, contributes to obtaining the finest quality product.The aim of this paper was to test the key parameters in the process of explosive production and compare the results with the standard (reference) v...

By Šefkija Botonjić, Azra Halilović, Irma Ramić

High strength low alloy (HSLA) steels represents a group of low carbon steels that utilise small amaunts of alloying elements, such as Mo, Ti, V and Nb, to attain yield strengths in excess of 275 MPa in the as rolled condition. The main properties of HSLA steels that make them for wide variety of applications are: strength and toughn...

By Gorazd Kosec, Jelena Vojvodić-Tuma, Mirko Gojić, Borut Kosec, Milan Bizjak, Aleš Nagode

In various packaging forms, materials are found directly or indirectly related to the packaged food product and for that reason, they must meet the requirements that enable complete, or within acceptable limits, health and hygienic food safety. During the interaction process of packaging-food contact, the migration of packaging compo...

By Ifet Šišić, Osman Perviz

Parameters which define environment conditions are largely qualified with influence of the Kostolac A and Kostolac B energy plants and surface mining of lignite. The air quality is examined continuously by measuring total deposited matter and the emissions of gases such as CO2, SO2, NOx, CO, O3. It is found that pollution substances significantly e...

By Steva K. Jaćimovski, Slobodan Miladinović, Jovan P. Šetrajčić, Siniša M. Vučenović