EEFFECT OF VARIATIONS IN CHEMICAL COMPOSITION ON QUALITY OF HOT ROLLED AND DRAWN WIRE
Ratio of ultimate tensile strength and yield stress shows lower values in cold drawn wire than in hot rolled state. The results of research addressing the effect of variations in chemical composition of continuous casted billets on mechanical properties of cold-formed wire used in production of steel mesh are presented. In the c...
By Šaban Žuna, Aida Mahmutovic, Faik Uzunović, Sead Spužić
MICROSTRUCTURE AND PROPERTIES OF KINETICALLY ACTIVATED BAINITE (KAB) STEELS
KAB steels are a newly developed grade of advanced ultra high strength steels, which distinguish themselves by the rapid formation of fine nanostructured carbide free lower bainite. The term nanostructured is used with respect to the thickness of the individual bainitic ferrite plates which can vary between 50 nm to as fine as a few ...
By Peter Kirbiš, Mihael Brunčko, Ivan Anžel
ANALYSIS OF Cu-Al-Mn SHAPE MEMORY ALLOYS AFTER CASTING IN MOULDS
Shape memory alloys (SMAs) are advanced functional materials suitable for technical applications. Among them Cu-Al-Mn alloy is a promising candidate for industry applications (mechanical engineering, electro-engineering etc.) due to their ductility. In this work analysis of the Cu-Al-Mn alloy after smelting and casting in the laborat...
By Mirko Gojić, Stjepan Kožuh, Ivana Ivanić, Tamara Holjevac-Grgurić, Robert Pezer, Ivan Anžel, Borut Kosec, Milan Bizjak, Ladislav Vrsalović, Dragana Živković
INFLUENCE OF HOLDING TIME ON AUSTENITIZATION TEMPERATURE ON GRAIN SIZE OF S355J2 STEEL
The austenitization is first operation at most operations of heat treatment, and it is implied heating steel on the austenitizing temperature and holding at this temperature while are not achieved completely transformation origin microstructure in austenite. Two base parameters which implicate at effect of austenitization are austeni...
By Armina Bašić, Almaida Gigović-Gekić, Hasan Avdušinović, Mustafa Hadžalić
THERMODYNAMIC CALCULATION OF THE Al-Sn-Ga PHASE DIAGRAM
Phase diagram of the Al-Sn-Ga ternary system was calculated using optimized thermodynamic parameters for binary sub-systems based on CALPHAD method. Four vertical sections were calculated: Ga0.5Sn0.5-Al, Al0.5Sn0.5-Ga, Al0.5Ga0.5-Sn, and Al0.9GaSn0.1-Ga. Calculated liquidus projection of the Al-Sn-Ga ternary system and isothermal sec...
By Ljubiša Balanović, Dragana Živković, Dragan Manasijević, Jožef Medved, Maja Vončina
POSSIBILITY OF THE PRODUCTION OF PORTLAND-COMPOSITE CEMENTS TYPE 52,5N IN CEMENTPLANT KAKANJ
This article talks about the possibility of production of portland-composite cement in cement plant Kakanj in accordance with the requirements of EN 197-1. By that standard cement class 52,5N must have a compressive strenght greater or equal 20MPa after 2 days, and after 28 days greater or equal 52,5MPa. Portland-composite cement is ...
By Nevzet Merdić, Ilhan Bušatlić, Nedžad Haračić, Nadira Bušatlić
ESTIMATION OF PARTICULATE MATTER CONCENTRATIONS AT SOME POPULATED CENTERS AROUND SHKODRA LAKE USING SYNERGISTICALLY IN-SITU MEASUREMENTS AND REMOTE SENSING TECHNIQUES
Lake of Shkodra as the largest lake in the Balkan Peninsula forms a relatively complex ecosystem. One of the most important indicators of this ecosystem is also the quality of air. Air quality can be estimated based on several viewpoints, using physical or chemical parameters. In this study, the work is based on estimation of particulate matter con...
By Jozef Bushati, Florian Mandija
SULFUR DIOXIDE AIR POLLUTION IN THE CITY OF ZENICA
In the city of Zenica steel is continuously produced more than 120 years. In all technological stages of production and processing of steel within integrated steel works large amounts of raw materials and fuels which contain a certain amount of sulfur are consumed. The flue gases formed during production and processing of steel contain certain conc...
By Sulejman Muhamedagić, Mirsada Oruč, Halim Prcanović
THE IMPACT OF THE APPLICATION OF THE ELECTRONIC TICKET PAYMENT SYSTEM IN PUBLIC TRANSPORT ON THE REDUCTION OF SULPHUR DIOXIDE CONCENTRATION IN THE AIR
The main objective was to reduce: the time of the bus stops, the time for administrative actions of drivers, fuel consumption, air pollution emissions of SO2 and increase the solvency of the company. For the realization of the objectives set was needed: to introduce electronic billing system with the use of contactless - chip cards. All vehicles ar...
By Jusuf Borić
LCA METHOD AS AN USEFUL TOOL IN PRODUCTION ENGENEERING
The most used and established method for detecting the effects of the product on the environment is a life cycle assessment (LCA) method. LCA analyzes the effects of the product on the environment in its all five life stages: design, materials selection, manufacture, use, and ultimately its removal. At the same time LCA is an important tool wh...
By Borut Kosec, Blaž Karpe, Dragan Gogić, Aleš Nagode, Igor Budak, Milana Ilić, Gorazd Kosec, Zorana Tanasić, Goran Janjić, Mirko Soković