This paper studies the effect of annealing on the microstructure and hardness, microhardness and electrical conductivity changes of cold deformed (ε=40%) sintered pure copper and Cu-4at.% Au alloy. The samples of pure copper and Cu-4at.%Au alloy were obtained by sintering, followed by prefinal rolling, quenching and final rolling with 40% r...

By Ivana Marković, Svetlana Nestorović, Desimir Marković, Dragana Živković

In this work we studied the response of newly developed armored steel plates PROTAC 500 to the ballistic testing with armored piercing bullets with a core of tungsten carbide, charge 7.62 mm. Interactions between the bullets and the steel plate was investigated by standard metallographic and mechanical testing methods. We were interested in the geo...

By Jure Bernetič, Gorazd Kosec, Slavko Ažman, Matjaž Marčetič, Boštjan Podlipec, Borut Kosec, Aleš Nagode, Ladislav Kosec, Mirko Gojić, Milenko Rimac, Omer Beganović, Zijah Burzić, Franc Vodopivec, Iztok Tomažič

Innovative idea of the device for detecting microstructure changes, concept and construction was carried out and controlled by authors of this article in cooperation with Slovenian industry. Since the electrical resistance is one of the most structurally sensitive properties of the materials, we used its measurement to detect microstructural change...

By Milan Bizjak, Blaž Karpe, Borut Kosec, Aleš Nagode, Goran Brovč, Mirko Gojić

The impact of chemical corrosion on the durability of tundish working lining based on slurry mix is discussed in this work. The results of chemical and mineralogical analysis in the sample of tundish working layer after lining lifetime are presented. Infiltration of slag effected in a reduced thermal shock resistance resulting in thermal stress on ...

By Aida Mahmutović, Omer Kablar, Šaban Žuna

When considers about design/development of products then it must be objectify one of the following aspects, development of completely new products, development of new product lines, addition of existing product lines, improvements and revisions of existing products, repositioning and cost reduction. When you design a product, it is necessary to mak...

By Zehrudin Osmanović, Nedzad Haračić

In this paper the synthesis of nanoparticles of iron oxide from aqueous solution was carried at temperatures of 10, 20, 30, 40, 50 and 60 °C and with a different precipitation rate controlled by addition of a precipitating agent. The possibility of synthesis of ferrofluid with different ratios of reactants (FeCl2 and FeCl3 solution and NH4OH) w...

By Pero Dabić, Damir Barbir, Bruno Moranduzzo

In the process of production of iron and steel substantial amounts of fuel and raw materials are consumed. Metallurgical coke as fuel, reducing agent and material that provide gas flow trough blast furnace processes must possess certain properties in terms of strength, due to expected changes in the conditions of high temperature environment. Deman...

By Sulejman Muhamedagić, Hasan Avdušinović

This paper describes the analysis and rationalization of energy consumption in gray iron foundry CIMOS TMD Casting Zenica. Based on results of analysis the key points are defined rationalized and measures proposed to reduce energy consumption, and therefore reduce production costs. The most significant share of energy consumption, and therefore in ...

By Sedad Mušinović, Hasan Avdušinović, Šehzudin Dervišević

Steel shot is used in foundries as a means for mechanical cleaning of castings. Due to wear (mechanical damage) there is a change in size of shot. After some time of use steel shot it becomes unusable for shot blasting process and becomes waste. Studies have shown that this type of waste has good adsorption properties and it is suitable adsorbent f...

By Anita Štrkalj, Zoran Glavaš, Krešimir Maldini, Damir Hršak, Ivica Šipuš