Austempered ductile iron is the last addition to the group of ductile irons obtained by isothermalimprovement of classic ductile iron. Austempered nodular cast iron has improved mechanicalproperties and a different matrix microstructure compared to known iron-based castings. Thistype of casting is obtained by isothermal improvement - austempering, ...

By Adisa Burić, Belma Fakić, Edib Horoz, Hasan Avdušinović, Raza Sunulahpašić

Steel cooling is an important technological operation because the final microstructure of the steel,and therefore its properties, depends on the cooling rate. The speed of steel cooling depends onnumerous factors, one of which is the movement of the cooling media. This paper presents theresults of testing the influence of mixing the cooling media o...

By Almaida Gigovic-Gekic, Hasan Avdušinović, Amna Hodzić, Branka Muminović

This paper examines the possibility of producing metallurgical cement type CEM III/A 42.5N at theKakanj Cement Factory. The tested samples contain respectively 46%, 41%, and 38% of granulatedblast furnace slag and the rest is clinker. According to the test results, all cement samples meet theEN 197-1 standard in terms of physical-mechanical propert...

By Nevzet Merdić, Nedžad Haračić, Ilhan Bušatlić, Nadira Bušatlić, Adnan Mujkanovic

According to new EN 197-5 is possible to combine clinker with blast furnace slag, silica fume,pozzolana, fly ash, burnt shale, and limestone from 36 – 50% while clinker content should be from50 – 64%. In this paper are presented results of laboratory testing concerning CEM II/C-M(S+W) production where a sample is prepared by mixing 50% ...

By Nedžad Haračić, Nevzet Merdić, Ilhan Bušatlić, Nadira Bušatlić

In industries such as the chemical industry, the oil industry, the steel industry, and the pulp andpaper industry, energy systems are the basis of the production process and represent keyindicators of the profitability of the process. Energy efficiency in industry is long-term related totechnological development and the dynamics of renewal of produ...

By Nusret Imamović, Armina Čamić, Haris lepić

Particulate matter enters the atmosphere as a result of human activity, as well as natural processes.Since we still cannot influence natural processes, reducing the concentration of floating particlesis possible only by adjusting human activity. The emission of solid particles occurs during a largenumber of everyday activities. Depending on the act...

By Aida Šapčanin, Aida Hasanović, Farzet Bikić

The paper presents data on emissions of analyzed pollutants into the air (SO2, NOx, CO, VOC,NH3, PM10, PM2.5, PAH, Pb, Cd, and Hg) by sector (industry and energy, small combustion plants,road traffic and services-agriculture and animal husbandry), and by cities and municipalities inthe area of the Zenica-Doboj Canton. Based on the analyzed data, it...

By Vehid Birdahić, Muvedet Šišić, Nusret Imamović, Halim Prcanović, Mirnes Duraković

Steel 67SiCr5 is a alloyed carbon steel usually used for production of springs. It is used for load bearing springs, ring-shape springs, spiral springs, anti vibration springs etc. Springs steels are usually distribute in annealed or hardened and tempered state. Heat treating could be performed before or after springs forming. In this article, the ...

By Almaida Gigović-Gekić, Jusuf Duraković, Hasan Avdušinović

The precipitation of sigma (σ) phase in austenitic stainless steels is a significant subject of many investigations. Exposure of these steels to elevated temperatures (from 600 °C to 900 °C) results in precipitation of σ phase (transformation product from delta (δ) ferrite) which is one of the main reasons for the deterior...

By Amna Hodžić, Almaida Gigovic-Gekic, Raza Sunulahpašić

Mostly used food packing are: paper, cartoon, plastics, glass, metals and multilayer materials. The plastics and paper/cartoon make about 70% of all food packing. These two have the biggest migration potential. The use of plastics is regulated by specific EU rules, but it is not yet the same about the use of paper packing. In order to ensure health...

By Benjamin Muhamedbegović, Midhat Jašić, Marizela Šabanović, Faik Uzunović