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

Austempering is two steps heat treatment process that, when applied to ductile iron, produces components that have properties superior to those processed by conventional treatment. Depending to chosen heat treatment parameters different final properties of the casting are obtained. In this paper heat treatment parameters for producti...

By Hasan Avdušinović, Almaida Gigović-Gekić

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

Polymer bonded Nd-Fe-B magnets belong to the group of functional composite materials, which consist mainly of two components: a polymer binder (PPS, PA) and magnetic particles of Nd-Fe-B alloy. The appropriate amounts of polymer binder, magnetic powder and additives are compounded by the twin screw extruder into a compound, that can ...

By Mihael Brunčko, Peter Kirbiš, Ivan Anžel

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

The increase in energy prices in the world, then the realization of less dependence on energy imports, and in particular meeting the hierarchical concept of waste management as it is in the EU, including reducing emissions of greenhouse gases (GHG Greenhouse Gases) in accordance with the Framework Convention of the United Nations Convention on clim...

By Mahmut Jukić, Ifet Šišić

Dimensional tolerances of semi-products for the automotive industry became extremely narrow, and allow no deviations in the production process. In present research work the distortion behaviour of C15E (1.1141) and 42CrMo4 (1.7225) steels during two common industrial heat treatments (quenching and controlled heating and cooling) was ...

By Damir Česnik, Matej Rustja, Milan Bizjak, Blaž Karpe

The paper presents comparison of microstructure and hardness of Cu-Al-Ni shape memory alloy before and after heat treatment (quenching at 900°C/60 min/water and tempering at 300°C/60 min/water). Microstructural analysis was obtained by optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometr...

By Mirko Gojić, Ivana Ivanić, Stjepan Kožuh, Milenko Rimac, Omer Beganović, Kemal Begović Begović, Borut Kosec

The main characteristic of hydrotechnical cement, which is used to build massive structures, is the low heat of hydration. In this work is examined the effect of the electrofilter ash with a high content of calcium oxide addition on the hydration heat of Portland cement. The cement samples containing 0% to 50 % fly ash from TPP „Kakanj“...

By Ilhan Bušatlić, Nevzet Merdic, Nadira Bušatlić, Asim Ibrahimagić, Azra Smajić

In Europe and the world number of companies and institutions which in development strategies include social responsibility strategies is bigger every day. It is a response to market demands and pressures of economic and social community on the issue of environmental protection. Corporate social responsibility is the responsibility of the company as...

By Neira Delić, Milenko Rimac, Mirsada Oruč