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Publications
Publications (47)
Strontium (Sr) and sodium (Na) are the most used modifiers in the aluminum casting industry. Both lose their concentration (fade) during holding in the melting furnace. Three types of chemical reactions in the melt may cause modifier fading: vaporizing, oxidizing, or reacting with some other elements from the melt. Due to Na and Sr’s very low vapor...
The modification of silicon particles in as-cast aluminum alloys can be done with different modifiers. Sodium is the strongest one not so often used in aluminum casting plants. This is because sodium fading is considerably vigorous compared to other modifiers. This study examined the effect of sodium fading on the modification level of silicon part...
The paper proposes a programming methodology for advanced manufacturing based on STEP-NC, a compliant to multi-axis CNC woodworking machining center. The equivalent virtual machine in the CAD/CAM, STEP-NC environment, is developed as a part of a programming system for considered CNC woodworking machining center. STEP-NC aims to provide a digital th...
Elderberry (Sambucus nigra) pith was modified with polyethyleneimine (PEI) in order to improve the adsorption properties. Characterization of both dried Sambucus nigra pith (DSNP) and amino modification of elderberry pith with branched PEI (PEI/DSNP) was performed by: Fourier-transform infrared spectroscopy (FTIR), optical microscopy, and porosity...
On the way to building smart factories as the vision of Industry 4.0, the casting process stands out as a specific manufacturing process due to its diversity and complexity. One of the segments of smart foundry design is the application of artificial intelligence in the improvement of the casting process. This paper presents an overview of the cond...
The paper describes the innovative solution for revitalization of hydro turbines by using the techniques of reverse engineering and virtual production. The application of modern digital tools in developing, designing and producing shows substantial benefits in improving the existing hydro turbine. Model testing in these cases is not necessary to im...
Sustainability, one of the most important aspects of every production plant, can be enhanced through retrofitting. In this paper, retrofitting of two furnaces for metal heat treatment, namely vacuum furnace and conveyor belt furnace with protective atmosphere, are presented. The goal of the revitalization of the furnaces is modernization through th...
This paper presents the application of CAD/CAE/CAM systems at the improvement of the manufacturing the flotation balls for grinding ore. Flotation balls need to satisfy the appropriate requirements in terms of dimensional, chemical, mechanical and physical properties. These properties are directly related to technology of ball manufacturing, in thi...
This paper presents the application of machine learning in the control of the metal melting process. Metal melting is a dynamic production process characterized by nonlinear relations between process parameters. In this particular case, the subject of research is the production of white cast iron. Two supervised machine learning algorithms have bee...
The warehouse is an important factor in the manufacturing process. At present, there are
constant demands for the more efficient and effective operation of warehouse systems. For
this reason, the rationalization of existing warehouses and/or storage systems is one of the
ways to achieve the previously set targets. The possibilities of rationalizati...
This chapter presents the potential of the cooling curve analysis to characterize the solidification path of the cast hypoeutectic series of Al-Si-Cu alloys and to quantify their feeding regions. The aim of this work is to examine how variations in the chemical composition of Si (5, 7 and 9 wt.%) and Cu (from 0 to 4 wt.%) might affect the character...
Simulation is currently routinely applied in many aluminum foundries as a standard tool. The accuracy of casting simulation depends to a large extent on the quality of the available physical and thermo-physical properties of the material provided by the software’s database. The available databases presently used in commercial simulation software pa...
Achievement of strategy objectives of defensive organizations is in close connection with the use of an adequate technology. This paper explains why augmented reality, technology that superimposes digital information over real world information, requires special attention in defense industry. The authors identified and described several key roles o...
This paper presents the use of metaheuristic optimization techniques to support the improvement of casting process. Genetic algorithm (GA), Ant Colony Optimization (ACO), Simulated annealing (SA) and Particle Swarm Optimization (PSO) have been considered as optimization tools to define the geometry of the casting part’s feeder. The proposed methodo...
This paper shows fuzzy and neuro-fuzzy intelligent systems for automatic control of mold filling employed in casting plants. The concept of precision mold filling presupposes three key points in the process, i.e., precise pouring of the stream into the basin, maintaining constant level of molten metal in the basin, and finally, elimination of overf...
The paper presents a methodology of optimization of the gating system for sand casting using the genetic algorithm. Software package for computer-aided design/computer-aided manufacturing (CAD/CAM) was used as the support to the design and verification of the optimized gating system. The geometry of the gating system of sand casting in excavator to...
This paper presents the results of investigating an AI-Fin bond between an aluminum piston alloy and austenitic cast iron. The part investigated utilized an austenitic cast iron insert for the first ring groove for application in a highly loaded diesel engine for increased wear resistance. A metal-lographic investigation using an optical microscope...
This paper presents the results of investigating the formation of intermetallic bond between a ring carrier and aluminum piston alloy. The ring carrier is made of austenitic cast iron (Ni-Resist) in order to increase the wear resistance of the first ring groove and applied in highly loaded diesel engines. Metallographic examination of the quality o...
The paper presents the average annual concentrations of heavy metal ions in the wastewater of the Majdanpek Copper Mine filtration plant. Chemical analyses of wastewater samples found an increased content of heavy metal ions (Cu, Fe, Mn, Zn, Pb, Cd etc.) that exceed the values of the maximum permissible concentration defined by the relevant Regulat...
The paper presents the average annual concentrations of heavy metal ions in the wastewater of
the Majdanpek Copper Mine filtration plant. Chemical analyses of wastewater samples found an
increased content of heavy metal ions (Cu, Fe, Mn, Zn, Pb, Cd etc.) that exceed the values of the
maximum permissible concentration defined by the relevant Regulat...
This paper presents the results of testing the microstructure in the most critical zones of pistons made of aluminum piston alloys. The paper analyzes the shape, size and distribution of primary Si crystals and other phases in three most important piston zones (the edge of the combustion chamber, the area of rings groove and piston pin boss). The p...
The present work displays the potential of cooling curve analysis to characterize
the solidification path of cast hypoeutectic series of Al-Si6-Cu(1−4 wt.%) and Al-Si8-
Cu(1−4 wt.%) alloys. The aim of this work was to examine how variation in chemical
composition of silicon and copper may affect characteristic solidification temperatures,
fraction...
This paper presents the results of an analysis of the formation of an intermetallic bond between a ring carrier and an aluminum piston alloy. The ring carrier is made of austenitic cast iron (Ni-Resist) to increase the wear resistance of the first ring groove and is applied in highly loaded diesel engines. The most important thing is that the Ni-Re...
The aim of this paper is to demonstrate that it is possible to characterize the development and quantify the area percentage of
Cu-enriched phases in Al-5Si-(1-4)Cu alloys by applying a cooling-curve analysis. It is shown that several distinct Cu-enriched
phases are manifested as peaks on the first derivative of the cooling curve. The total area pe...
This paper presents the results of identifying and analyzing the phases present in the microstructure of
4 aluminum piston alloys with different chemical composition. Optical microscopy and scanning electron
microscopy were used to study the microstructure of the samples and EDS analysis was used to identify the
composition of the phases. The phase...
The paper analyses the average annual values of the concentration of total dry residue, pH value
and suspended matter in the wastewater of the Majdanpek Copper Mine. It has been shown that
certain results exceed the values of the maximum permissible concentration defined by the
relevant regulations of the Republic of Serbia. The obtained results we...
Abstract: During the design process of vital structural components it is necessary to consider all engineering design
aspects including the initial geometry, material selection, nominal loads, global and detailed stress-strain
calculations. The objective of the present article is to outline the process of such multiparametric geometry
optimization...
This paper provides an overview of conventional methods of piston surface treatment for IC
engines. One of the most stressed parts of IC engine is the cylinder assembly, i.e., the piston as a
component of this assembly. In its operation, the piston is exposed to the impact of aggressive
gaseous and liquid environment, elevated temperatures, thermal...
In this paper, the advantages of applying software packages for the optimisation of the relevant technological parameters of casting and their implementation and control in production processes using the example of a cast piston are presented. The micro- and macrostructural characteristics of two different modes of solidification are given. In prev...
A comprehensive understanding of solidification process is of paramount importance for the control and prediction of actual casting characteristics. The present work presented the potential of cooling curve analysis to characterize the solidification path of cast hypoeutectic series of Al–Si–Cu alloys. The aim of this work was to examine how variat...
This research paper presents the results of the effects of heat treatment on the microstructure and mechanical properties of aluminum piston alloys. Four piston alloys of different chemical compositions were experimentally investigated. Different temperatures and times (480 degrees C to 515 degrees C for 1 h to 60 h) of the solution heat treatment...
![Binary phase diagrams of selected magnesium alloys [10, 13].](profile/Natalija-Dolic/publication/258390327/figure/fig1/AS:1088974193987589@1636643088837/Binary-phase-diagrams-of-selected-magnesium-alloys-10-13_Q320.jpg)
![Binary phase diagrams of major aluminum alloying elements [13].](profile/Natalija-Dolic/publication/258390327/figure/fig2/AS:1088974193999878@1636643088860/Binary-phase-diagrams-of-major-aluminum-alloying-elements-13_Q320.jpg)
![Binary phase diagrams of major aluminum alloying elements [13].](profile/Natalija-Dolic/publication/258390327/figure/fig4/AS:1088974198190087@1636643089070/Binary-phase-diagrams-of-major-aluminum-alloying-elements-13_Q320.jpg)
![Binary phase diagrams of selected magnesium alloys [10, 13].](profile/Natalija-Dolic/publication/258390327/figure/fig5/AS:1088974198194178@1636643089090/Binary-phase-diagrams-of-selected-magnesium-alloys-10-13_Q320.jpg)
The purpose of this paper is to develop a mathematical equation, which will be able to accurately predict the liquidus temperature of various aluminum and magnesium cast alloys on the basis of their known chemical compositions. An accurate knowledge of liquidus temperature permits a researcher to predict a variety of physical parameters pertaining...
This research paper presents the results of the effects of heat treatment on the microstructure and mechanical properties of
aluminum piston alloys. Four piston alloys of different chemical compositions were experimentally investigated. Different
temperatures and times (480 °C to 515 °C for 1 h to 60 h) of the solution heat treatment were investiga...
Beside the explaination of the process of soil remediation and thermal desorption, the paper contains
elaboration of the assessed hazards and risks in those processes. The appropriate measures for safe
and healthy work are established and prevised accordingly. A systematic approach, the basic principles
of behavior at work and the structure of the...
Abstract: This paper presents the results of the effects of optimizing the heat treatment of cast pistons in order to save
energy. The piston alloy castings of approximately eutectic composition (AlSi13Cu4Ni2Mg) were examined. Different
temperatures and times of solution heat treatment (480 to 510 °C for 1 to 20 h) and of aging (150 to 200 °C for 1...
n this study, the effect of low frequency electromagnetic fields during the vertical semi-continuous casting process of 6060 aluminum alloy billets was investigated. The results were compared with those obtained by conventional semi-continuous casting. Based on comparative analysis of the results, it was found that casting in a low frequency electr...
This study investigated the advantages of using low-frequency electromagnetic casting (LFEC) process compared to conventional direct chill DC casting of aluminum alloy and considered possible energy savings. The obtained results have indicated that casting in low-frequency electromagnetic field offers a series of advantages regarding the quality of...
In this study, the effect of low frequency electromagnetic fields during the vertical semi-continuous casting process of 6060 aluminum alloy billets was investigated. The results were compared with those obtained by conventional semi-continuous casting. Based on comparative analysis of the results, it was found that casting in a low frequency elect...
This study investigated the advantages of using low-frequency electromagnetic casting (LFEC) process compared to conventional direct chill DC casting of aluminum alloy and considered possible energy savings. The obtained results have indicated that casting in low-frequency electromagnetic field offers a series of advantages regarding the quality of...
In this research paper, the phases identified by thermal and microscopic analysis of the piston alloy AlSi13Cu4Ni2Mg, which was solidified under different conditions, are presented and compared with different piston alloys. Piston alloys are a group of casting Al–Si alloys, well-known as wear resistant materials, which are widely used as the piston...
In this paper, the possibility of implementation of the infrared thermography as a technical systems' diagnostic method is investigated. The infrared thermography as a contemporary method was used for visualization of the working conditions in the piston of an automotive engine as well as for analyzing of the thermal changes the piston sustained un...
![Figure 1: All results below 440 [s] are hidden by the x-ray option](profile/Srecko-Manasijevic/publication/269102224/figure/fig1/AS:295324095664128@1447422159591/All-results-below-440-s-are-hidden-by-the-x-ray-option_Q320.jpg)
![Figure 2: All results below 580 [s] are hidden by the x-ray option.](profile/Srecko-Manasijevic/publication/269102224/figure/fig3/AS:295324095664130@1447422159675/All-results-below-580-s-are-hidden-by-the-x-ray-option_Q320.jpg)
![Figure 3: All results below 800 [s] are hidden by the x-ray option](profile/Srecko-Manasijevic/publication/269102224/figure/fig2/AS:295324095664129@1447422159630/All-results-below-800-s-are-hidden-by-the-x-ray-option_Q320.jpg)
![Figure 4: All results below 850 [s] are hidden by the x-ray option](profile/Srecko-Manasijevic/publication/269102224/figure/fig4/AS:295324095664131@1447422159725/All-results-below-850-s-are-hidden-by-the-x-ray-option_Q320.jpg)
Goal of this paper is to present options of
optimizing and controlling casting regime in order to
provide previously optimized technological parameters
affecting cast quality. This paper uses specific example of
introduced advantage of concurring new products with
modern software package MagmaSoft comparing to
conventional manner. Previous, convent...
Abstract: Information technology and virtual manufacturing of castings enabled shortening the time to develop a product, as well as high quality castings fabrication at first attempt, what can be the crucial contribution in achieving the increased engineering adequacy and economic competitiveness of foundries in Serbia. Matching the global market d...
Projects
Projects (3)
Espal's goal is to achieve significant energy savings during the production of al-alloys billets and ingots by use of dc casting method in combination with...
Primena informacionih tehnologija i virtuelne izrade odlivaka pored skraćivanja vremena osvajanja proizvoda i smanjenja troškova proizvodnje omogućuje i proizvodnju kvalitetnijih odlivaka u prvom pokušaju, što može značajno doprineti povećanju tehničke kompetentnosti i privredne konkurentnosti livnica u Republici Srbiji. Prilagođavanje zahtevima globalnog tržišta, povećanje tehničkih sposobnosti i ekonomske efikasnosti zahteva od livnica u Srbiji racionalizaciju i optimizaciju proizvodnje odlivaka. S obzirom na produktivnost, količinu škarta, utrošak energije po kilogramu odlivka, primenom kompjuterske simulacije livenja bitno se utiče na pobolјšanje poslovanja livnica u Srbiji.U ovom trenutku teško je pretpostaviti da pojedinačno livnice, u Republici Srbiji pri razvoju novih proizvoda i optimizaciji tehnologije livenja metala mogu primeniti najnovije kompjuterske tehnologije, bilo da je to povezano s nabavkom skupih softvera ili edukacijom i zapošlјavanjem stručnjaka specifičnog profila.
