TY  - JOUR
AU  - Ristić, M.
AU  - Vasović, Ivana
AU  - Alil, A.
AU  - Obradović, J.
AU  - Prokić-Cvetković, Radica
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2966
AB  - The aim of this paper was to determine the causes of screws failures in compressor valves, obtained from petroleum industry. The analysed screws were in exploitation and deposition coated. Before the fracture analysis, control calculation of screws is done in order to determine, if the screws are properly dimensioned. After visual and radiographic examination, their chemical composition and structure were analysed. Detail fractography was performed on fractured surfaces to try to obtain an impression about screws failure mechanism. Qualitative analysis of deposit was employed in order to confirm if there was any possible influence of surroundings during their failure in terms of corrosion-assisted cracking. The macrofractography of originally broken surfaces shows a rough and complex topography of fracture surfaces indicating to a possibility that screws failure has been a result of complex loading conditions. Presence of sulfur containing particles on the fracture surfaces of broken screws and in deposit reveals a possibility that failure was environmentally-assisted.
PB  - Scibulcom Ltd.
T2  - Journal of the Balkan Tribological Association
T1  - Failure analysis of carbon steel screws under the service in the presence of corrosion environment
EP  - 303
IS  - 2
SP  - 291
VL  - 24
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3792
ER  - 

@article{
author = "Ristić, M. and Vasović, Ivana and Alil, A. and Obradović, J. and Prokić-Cvetković, Radica",
year = "2018",
abstract = "The aim of this paper was to determine the causes of screws failures in compressor valves, obtained from petroleum industry. The analysed screws were in exploitation and deposition coated. Before the fracture analysis, control calculation of screws is done in order to determine, if the screws are properly dimensioned. After visual and radiographic examination, their chemical composition and structure were analysed. Detail fractography was performed on fractured surfaces to try to obtain an impression about screws failure mechanism. Qualitative analysis of deposit was employed in order to confirm if there was any possible influence of surroundings during their failure in terms of corrosion-assisted cracking. The macrofractography of originally broken surfaces shows a rough and complex topography of fracture surfaces indicating to a possibility that screws failure has been a result of complex loading conditions. Presence of sulfur containing particles on the fracture surfaces of broken screws and in deposit reveals a possibility that failure was environmentally-assisted.",
publisher = "Scibulcom Ltd.",
journal = "Journal of the Balkan Tribological Association",
title = "Failure analysis of carbon steel screws under the service in the presence of corrosion environment",
pages = "303-291",
number = "2",
volume = "24",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3792"
}

Ristić, M., Vasović, I., Alil, A., Obradović, J.,& Prokić-Cvetković, R.. (2018). Failure analysis of carbon steel screws under the service in the presence of corrosion environment. in Journal of the Balkan Tribological Association
Scibulcom Ltd.., 24(2), 291-303.
https://hdl.handle.net/21.15107/rcub_technorep_3792

Ristić M, Vasović I, Alil A, Obradović J, Prokić-Cvetković R. Failure analysis of carbon steel screws under the service in the presence of corrosion environment. in Journal of the Balkan Tribological Association. 2018;24(2):291-303.
https://hdl.handle.net/21.15107/rcub_technorep_3792 .

Ristić, M., Vasović, Ivana, Alil, A., Obradović, J., Prokić-Cvetković, Radica, "Failure analysis of carbon steel screws under the service in the presence of corrosion environment" in Journal of the Balkan Tribological Association, 24, no. 2 (2018):291-303,
https://hdl.handle.net/21.15107/rcub_technorep_3792 .

TY  - JOUR
AU  - Ristić, M.
AU  - Prokić-Cvetković, Radica
AU  - Kozić, Mirko
AU  - Ristić, S.
AU  - Katavić, Boris
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2170
AB  - The aim of this paper is to present the investigations of the possibilities of increasing the wear resistance of the ventilation mill parts for coal grinding in power plants, by application of optimum hard coating technologies. High velocity of sand particles in the ventilation mill causes strong wear of the suction plates. The input data for plate modification are based on 3D numerical simulation of multiphase flow in grinding mill. The mixture model of the Euler-Euler approach is used. The results obtained in the numerical simulation serve for the selection of optimum redesign of the suction plates. To improve surface properties, the hard, wear-resistant coatings were created by hardfacing, technologies by manual metal arc and self-protecting flux core electrodes. Before applying hardfaced suction plates in the exploitation conditions, it is necessary to study model hardfaced samples. The experimental tests of redesigned suction plates during the real exploitation conditions show that the proposed technology of hardfacing gives good results. The relative weight loss of the suction plates after 1440 h period of exploitation in real conditions is very small 1-3%. The application of proposed technology can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.
PB  - Scibulcom Ltd.
T2  - Journal of the Balkan Tribological Association
T1  - Wear reducing of ventilation mill suction plates based on the multidisciplinary research
EP  - 513
IS  - 3
SP  - 493
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2170
ER  - 

@article{
author = "Ristić, M. and Prokić-Cvetković, Radica and Kozić, Mirko and Ristić, S. and Katavić, Boris",
year = "2015",
abstract = "The aim of this paper is to present the investigations of the possibilities of increasing the wear resistance of the ventilation mill parts for coal grinding in power plants, by application of optimum hard coating technologies. High velocity of sand particles in the ventilation mill causes strong wear of the suction plates. The input data for plate modification are based on 3D numerical simulation of multiphase flow in grinding mill. The mixture model of the Euler-Euler approach is used. The results obtained in the numerical simulation serve for the selection of optimum redesign of the suction plates. To improve surface properties, the hard, wear-resistant coatings were created by hardfacing, technologies by manual metal arc and self-protecting flux core electrodes. Before applying hardfaced suction plates in the exploitation conditions, it is necessary to study model hardfaced samples. The experimental tests of redesigned suction plates during the real exploitation conditions show that the proposed technology of hardfacing gives good results. The relative weight loss of the suction plates after 1440 h period of exploitation in real conditions is very small 1-3%. The application of proposed technology can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.",
publisher = "Scibulcom Ltd.",
journal = "Journal of the Balkan Tribological Association",
title = "Wear reducing of ventilation mill suction plates based on the multidisciplinary research",
pages = "513-493",
number = "3",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2170"
}

Ristić, M., Prokić-Cvetković, R., Kozić, M., Ristić, S.,& Katavić, B.. (2015). Wear reducing of ventilation mill suction plates based on the multidisciplinary research. in Journal of the Balkan Tribological Association
Scibulcom Ltd.., 21(3), 493-513.
https://hdl.handle.net/21.15107/rcub_machinery_2170

Ristić M, Prokić-Cvetković R, Kozić M, Ristić S, Katavić B. Wear reducing of ventilation mill suction plates based on the multidisciplinary research. in Journal of the Balkan Tribological Association. 2015;21(3):493-513.
https://hdl.handle.net/21.15107/rcub_machinery_2170 .

Ristić, M., Prokić-Cvetković, Radica, Kozić, Mirko, Ristić, S., Katavić, Boris, "Wear reducing of ventilation mill suction plates based on the multidisciplinary research" in Journal of the Balkan Tribological Association, 21, no. 3 (2015):493-513,
https://hdl.handle.net/21.15107/rcub_machinery_2170 .

TY  - JOUR
AU  - Ristić, M.
AU  - Prokić-Cvetković, Radica
AU  - Katavić, Boris
AU  - Vasović, Ivana
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2124
AB  - This paper presents results of the suction plate surface modification by hardfacing, of the ventilation mill in the Kostolac B power plant. Before applying hardfaced suction plates to exploitation conditions, it is necessary to study model hardfaced samples for determining the optimal tech-nology and filler material for revitalization. Experimental tests of revitalized mill suction plates in real exploitation conditions show that the proposed modification, hardfacing technologies and filler materials give good results. The relative weight loss of the suction plates after 1440 h period of exploitation in real conditions is 1-3%. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Selecting hardfacing technologies for ventilation mill suction plates and extending its working life
EP  - 180
IS  - 3
SP  - 173
VL  - 15
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2124
ER  - 

@article{
author = "Ristić, M. and Prokić-Cvetković, Radica and Katavić, Boris and Vasović, Ivana",
year = "2015",
abstract = "This paper presents results of the suction plate surface modification by hardfacing, of the ventilation mill in the Kostolac B power plant. Before applying hardfaced suction plates to exploitation conditions, it is necessary to study model hardfaced samples for determining the optimal tech-nology and filler material for revitalization. Experimental tests of revitalized mill suction plates in real exploitation conditions show that the proposed modification, hardfacing technologies and filler materials give good results. The relative weight loss of the suction plates after 1440 h period of exploitation in real conditions is 1-3%. The application of this approach can reduce the number of possible repairs and extends the period between them, resulting in significant economic effects.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Selecting hardfacing technologies for ventilation mill suction plates and extending its working life",
pages = "180-173",
number = "3",
volume = "15",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2124"
}

Ristić, M., Prokić-Cvetković, R., Katavić, B.,& Vasović, I.. (2015). Selecting hardfacing technologies for ventilation mill suction plates and extending its working life. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 15(3), 173-180.
https://hdl.handle.net/21.15107/rcub_machinery_2124

Ristić M, Prokić-Cvetković R, Katavić B, Vasović I. Selecting hardfacing technologies for ventilation mill suction plates and extending its working life. in Structural Integrity and Life. 2015;15(3):173-180.
https://hdl.handle.net/21.15107/rcub_machinery_2124 .

Ristić, M., Prokić-Cvetković, Radica, Katavić, Boris, Vasović, Ivana, "Selecting hardfacing technologies for ventilation mill suction plates and extending its working life" in Structural Integrity and Life, 15, no. 3 (2015):173-180,
https://hdl.handle.net/21.15107/rcub_machinery_2124 .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Katavić, Boris
AU  - Marković, Dragan
AU  - Ristić, M.
AU  - Gligorijević, B.
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2126
AB  - During the coal pulverizing, the working parts of the ventilation mill are being worn by the sand particles. For this reason, the working parts are usually protected with materials resistant to wear (hardfaced/thermal sprayed coatings). The aim of this study was to evaluate the tribological performance of four different types of coatings as candidates for wear protection of the mill’s working parts. The coatings were produced by using the filler materials with the following nominal chemical composition: NiFeBSi-WC, NiCrBSiC, FeCrCTiSi, and FeCrNiCSiBMn, and by using the plasma arc welding and flame and electric arc spraying processes. The results showed that Ni-based coatings exhibited higher wear resistance than Fe-based coatings. The highest wear resistance showed coating produced by using the NiFeBSi-WC filler material and plasma transferred arc welding deposition process. The hardness was not the only characteristic that affected the wear resistance. In this context, the wear rate of NiFeBSi-WC coating was not in correlation with its hardness, in contrast to other coatings. The different wear performance of NiFeBSi-WC coating was attributed to the different type and morphological features of the reinforcing particles (WC).
PB  - Fakultet inženjerskih nauka, Kragujevac
T2  - Tribology in Industry
T1  - The tribological performance of hardfaced/ thermal sprayed coatings for increasing the wear resistance of ventilation mill working parts
EP  - 329
IS  - 3
SP  - 320
VL  - 37
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2126
ER  - 

@article{
author = "Vencl, Aleksandar and Katavić, Boris and Marković, Dragan and Ristić, M. and Gligorijević, B.",
year = "2015",
abstract = "During the coal pulverizing, the working parts of the ventilation mill are being worn by the sand particles. For this reason, the working parts are usually protected with materials resistant to wear (hardfaced/thermal sprayed coatings). The aim of this study was to evaluate the tribological performance of four different types of coatings as candidates for wear protection of the mill’s working parts. The coatings were produced by using the filler materials with the following nominal chemical composition: NiFeBSi-WC, NiCrBSiC, FeCrCTiSi, and FeCrNiCSiBMn, and by using the plasma arc welding and flame and electric arc spraying processes. The results showed that Ni-based coatings exhibited higher wear resistance than Fe-based coatings. The highest wear resistance showed coating produced by using the NiFeBSi-WC filler material and plasma transferred arc welding deposition process. The hardness was not the only characteristic that affected the wear resistance. In this context, the wear rate of NiFeBSi-WC coating was not in correlation with its hardness, in contrast to other coatings. The different wear performance of NiFeBSi-WC coating was attributed to the different type and morphological features of the reinforcing particles (WC).",
publisher = "Fakultet inženjerskih nauka, Kragujevac",
journal = "Tribology in Industry",
title = "The tribological performance of hardfaced/ thermal sprayed coatings for increasing the wear resistance of ventilation mill working parts",
pages = "329-320",
number = "3",
volume = "37",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2126"
}

Vencl, A., Katavić, B., Marković, D., Ristić, M.,& Gligorijević, B.. (2015). The tribological performance of hardfaced/ thermal sprayed coatings for increasing the wear resistance of ventilation mill working parts. in Tribology in Industry
Fakultet inženjerskih nauka, Kragujevac., 37(3), 320-329.
https://hdl.handle.net/21.15107/rcub_machinery_2126

Vencl A, Katavić B, Marković D, Ristić M, Gligorijević B. The tribological performance of hardfaced/ thermal sprayed coatings for increasing the wear resistance of ventilation mill working parts. in Tribology in Industry. 2015;37(3):320-329.
https://hdl.handle.net/21.15107/rcub_machinery_2126 .

Vencl, Aleksandar, Katavić, Boris, Marković, Dragan, Ristić, M., Gligorijević, B., "The tribological performance of hardfaced/ thermal sprayed coatings for increasing the wear resistance of ventilation mill working parts" in Tribology in Industry, 37, no. 3 (2015):320-329,
https://hdl.handle.net/21.15107/rcub_machinery_2126 .

TY  - JOUR
AU  - Kočić, M.
AU  - Vencl, Aleksandar
AU  - Bobić, Ilija
AU  - Ristić, M.
AU  - Antić, M.
AU  - Milutinović, Z.
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4333
AB  - The aim of this paper is to presents a procedure of joining composite materials on aluminium base by using the GMAW process. The experiment included welding of the aluminium base composite with three different types of filler materials in the form of wire: AlMg4.5Zr, AlMg5 and AlSi5, and comparative analysis of the macroscopic and microscopic examination results. Base material was A356 Al-Si alloy composite containing 10 wt. % Al2O3. Average size of Al2O3 particles was 35 μm. The A356 matrix alloy was modified with the addition of 0.03 wt. % Sr. Composite was produced by the compocasting process. The results show that composite material with Al-Si matrix can be successfully welded by using the GMAW process. Results of macro and micro analysis show that the most favourable results were obtained by using the AlSi5 wire as filler material.
T2  - Welding and Material Testing
T1  - Joining of composite materials based on Al-Si alloys by using the GMAW process
EP  - 12
IS  - 3
SP  - 9
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4333
ER  - 

@article{
author = "Kočić, M. and Vencl, Aleksandar and Bobić, Ilija and Ristić, M. and Antić, M. and Milutinović, Z.",
year = "2014",
abstract = "The aim of this paper is to presents a procedure of joining composite materials on aluminium base by using the GMAW process. The experiment included welding of the aluminium base composite with three different types of filler materials in the form of wire: AlMg4.5Zr, AlMg5 and AlSi5, and comparative analysis of the macroscopic and microscopic examination results. Base material was A356 Al-Si alloy composite containing 10 wt. % Al2O3. Average size of Al2O3 particles was 35 μm. The A356 matrix alloy was modified with the addition of 0.03 wt. % Sr. Composite was produced by the compocasting process. The results show that composite material with Al-Si matrix can be successfully welded by using the GMAW process. Results of macro and micro analysis show that the most favourable results were obtained by using the AlSi5 wire as filler material.",
journal = "Welding and Material Testing",
title = "Joining of composite materials based on Al-Si alloys by using the GMAW process",
pages = "12-9",
number = "3",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4333"
}

Kočić, M., Vencl, A., Bobić, I., Ristić, M., Antić, M.,& Milutinović, Z.. (2014). Joining of composite materials based on Al-Si alloys by using the GMAW process. in Welding and Material Testing, 23(3), 9-12.
https://hdl.handle.net/21.15107/rcub_machinery_4333

Kočić M, Vencl A, Bobić I, Ristić M, Antić M, Milutinović Z. Joining of composite materials based on Al-Si alloys by using the GMAW process. in Welding and Material Testing. 2014;23(3):9-12.
https://hdl.handle.net/21.15107/rcub_machinery_4333 .

Kočić, M., Vencl, Aleksandar, Bobić, Ilija, Ristić, M., Antić, M., Milutinović, Z., "Joining of composite materials based on Al-Si alloys by using the GMAW process" in Welding and Material Testing, 23, no. 3 (2014):9-12,
https://hdl.handle.net/21.15107/rcub_machinery_4333 .

TY  - CONF
AU  - Marinković, Aleksandar
AU  - Marković, S.
AU  - Lazović, Tatjana
AU  - Stanković, Miloš
AU  - Ristić, M.
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1011
AB  - The great market expansion includes products such as heating ducts, ventilation and air-conditioning (HVAC) systems that are of interest in Engineering and Design. Machine design in general, and especially computer aided design (CAD) tools give the designer the opportunity to test different ideas, make needed models and, supported by corresponding calculations, help to find an optimal solution for the desired machine. This paper presents an attempt to design a machine production line for HVAC duct systems using the advanced software tool CATIA V5. Aimed to complete the design process, a few simulations and the necessary structural analysis is given in the paper.
C3  - Proceedings of the 7th International Conference on Engineering Computational Technology
T1  - Computer Aided Design and Simulation of a Machine Production Line for Heating, Ventilation and Air-Conditioning Duct Systems
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1011
ER  - 

@conference{
author = "Marinković, Aleksandar and Marković, S. and Lazović, Tatjana and Stanković, Miloš and Ristić, M.",
year = "2010",
abstract = "The great market expansion includes products such as heating ducts, ventilation and air-conditioning (HVAC) systems that are of interest in Engineering and Design. Machine design in general, and especially computer aided design (CAD) tools give the designer the opportunity to test different ideas, make needed models and, supported by corresponding calculations, help to find an optimal solution for the desired machine. This paper presents an attempt to design a machine production line for HVAC duct systems using the advanced software tool CATIA V5. Aimed to complete the design process, a few simulations and the necessary structural analysis is given in the paper.",
journal = "Proceedings of the 7th International Conference on Engineering Computational Technology",
title = "Computer Aided Design and Simulation of a Machine Production Line for Heating, Ventilation and Air-Conditioning Duct Systems",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1011"
}

Marinković, A., Marković, S., Lazović, T., Stanković, M.,& Ristić, M.. (2010). Computer Aided Design and Simulation of a Machine Production Line for Heating, Ventilation and Air-Conditioning Duct Systems. in Proceedings of the 7th International Conference on Engineering Computational Technology.
https://hdl.handle.net/21.15107/rcub_machinery_1011

Marinković A, Marković S, Lazović T, Stanković M, Ristić M. Computer Aided Design and Simulation of a Machine Production Line for Heating, Ventilation and Air-Conditioning Duct Systems. in Proceedings of the 7th International Conference on Engineering Computational Technology. 2010;.
https://hdl.handle.net/21.15107/rcub_machinery_1011 .

Marinković, Aleksandar, Marković, S., Lazović, Tatjana, Stanković, Miloš, Ristić, M., "Computer Aided Design and Simulation of a Machine Production Line for Heating, Ventilation and Air-Conditioning Duct Systems" in Proceedings of the 7th International Conference on Engineering Computational Technology (2010),
https://hdl.handle.net/21.15107/rcub_machinery_1011 .