Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill
Аутори
Alil, AnaKatavić, Boris
Ristić, Marko
Jovanović, Dragan
Prokolab, Milan
Stevan, Budimir
Kočić, Milorad
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Ventilation mill for grinding coal is one of the main steam
power plants in the system that makes a significant influence
on the level of energy efficiency with its work. Working
parts of the device during exploitation are dominantly
exposed to intensive abrasive and erosive wear and also to
impact loading at elevated temperatures, which can lead to
damage and fracture of homogeneous materials, thus
shortening their working life. The consequences are the
reduction in mill production capacity and its ventilatory
effects compared to the projected value, as well as frequent
delays due to parts replacements, that significantly affects
the productivity, economy and energy-efficiency of the
system.
In order to determine the optimal technology for
revitalization of the damaged impact plates the experimental
model-hardfacing was engaged and different technologies
and additional materials were used. Three technologies archardfacing
were applied (MMA, SMAW and gas welding -
G) ...and eight additional materials with different chemical
composition and properties (Fe-Cr-C-Si, Fe-Cr-C-Si-Ti, Fe-
C-W-Co-Ni-Si, Fe-Cr-W-B-Nb-Mo-C, W-Fe-C and WC-Ni-
Cr-Si-B). The aim of this paper is to make the selection of
optimum welding procedures and additional materials and
hardfacing technology definition based on the results of
structural and mechanical properties of samples of
experimental model hardfacing. Cutting the samples for
mechanical and structural tests is performed with water jet
cutting using hardfaced test plan. Investigation of its
macrostructure has been done, diagrams of distributions of
hardness have been made, zone of the surface layer and
HAZ-a, and the degree of mixing for all hardfaced samples
have been defined. In addition, microstructural analyses
were obtained with optical (OM) and scanning electron
microscopy (SEM). The choice of additional materials and
hardfacing procedures which were applied in the hard facing
impact plates ventilation mill has been made based on the
results of this research paper.
Извор:
The 5th International Conference – Innovative technologies for joining advanced materials, 2011, 1-6Издавач:
- SUDURA publising house, Rumunija
Финансирање / пројекти:
- Истраживање и оптимизација технолошких и функционалних перформанси вентилационог млина термоелектране Костолац Б (RS-MESTD-Technological Development (TD or TR)-34028)
Институција/група
Inovacioni centarTY - CONF AU - Alil, Ana AU - Katavić, Boris AU - Ristić, Marko AU - Jovanović, Dragan AU - Prokolab, Milan AU - Stevan, Budimir AU - Kočić, Milorad PY - 2011 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6094 AB - Ventilation mill for grinding coal is one of the main steam power plants in the system that makes a significant influence on the level of energy efficiency with its work. Working parts of the device during exploitation are dominantly exposed to intensive abrasive and erosive wear and also to impact loading at elevated temperatures, which can lead to damage and fracture of homogeneous materials, thus shortening their working life. The consequences are the reduction in mill production capacity and its ventilatory effects compared to the projected value, as well as frequent delays due to parts replacements, that significantly affects the productivity, economy and energy-efficiency of the system. In order to determine the optimal technology for revitalization of the damaged impact plates the experimental model-hardfacing was engaged and different technologies and additional materials were used. Three technologies archardfacing were applied (MMA, SMAW and gas welding - G) and eight additional materials with different chemical composition and properties (Fe-Cr-C-Si, Fe-Cr-C-Si-Ti, Fe- C-W-Co-Ni-Si, Fe-Cr-W-B-Nb-Mo-C, W-Fe-C and WC-Ni- Cr-Si-B). The aim of this paper is to make the selection of optimum welding procedures and additional materials and hardfacing technology definition based on the results of structural and mechanical properties of samples of experimental model hardfacing. Cutting the samples for mechanical and structural tests is performed with water jet cutting using hardfaced test plan. Investigation of its macrostructure has been done, diagrams of distributions of hardness have been made, zone of the surface layer and HAZ-a, and the degree of mixing for all hardfaced samples have been defined. In addition, microstructural analyses were obtained with optical (OM) and scanning electron microscopy (SEM). The choice of additional materials and hardfacing procedures which were applied in the hard facing impact plates ventilation mill has been made based on the results of this research paper. PB - SUDURA publising house, Rumunija C3 - The 5th International Conference – Innovative technologies for joining advanced materials T1 - Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill EP - 6 SP - 1 UR - https://hdl.handle.net/21.15107/rcub_technorep_6094 ER -
@conference{ author = "Alil, Ana and Katavić, Boris and Ristić, Marko and Jovanović, Dragan and Prokolab, Milan and Stevan, Budimir and Kočić, Milorad", year = "2011", abstract = "Ventilation mill for grinding coal is one of the main steam power plants in the system that makes a significant influence on the level of energy efficiency with its work. Working parts of the device during exploitation are dominantly exposed to intensive abrasive and erosive wear and also to impact loading at elevated temperatures, which can lead to damage and fracture of homogeneous materials, thus shortening their working life. The consequences are the reduction in mill production capacity and its ventilatory effects compared to the projected value, as well as frequent delays due to parts replacements, that significantly affects the productivity, economy and energy-efficiency of the system. In order to determine the optimal technology for revitalization of the damaged impact plates the experimental model-hardfacing was engaged and different technologies and additional materials were used. Three technologies archardfacing were applied (MMA, SMAW and gas welding - G) and eight additional materials with different chemical composition and properties (Fe-Cr-C-Si, Fe-Cr-C-Si-Ti, Fe- C-W-Co-Ni-Si, Fe-Cr-W-B-Nb-Mo-C, W-Fe-C and WC-Ni- Cr-Si-B). The aim of this paper is to make the selection of optimum welding procedures and additional materials and hardfacing technology definition based on the results of structural and mechanical properties of samples of experimental model hardfacing. Cutting the samples for mechanical and structural tests is performed with water jet cutting using hardfaced test plan. Investigation of its macrostructure has been done, diagrams of distributions of hardness have been made, zone of the surface layer and HAZ-a, and the degree of mixing for all hardfaced samples have been defined. In addition, microstructural analyses were obtained with optical (OM) and scanning electron microscopy (SEM). The choice of additional materials and hardfacing procedures which were applied in the hard facing impact plates ventilation mill has been made based on the results of this research paper.", publisher = "SUDURA publising house, Rumunija", journal = "The 5th International Conference – Innovative technologies for joining advanced materials", title = "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill", pages = "6-1", url = "https://hdl.handle.net/21.15107/rcub_technorep_6094" }
Alil, A., Katavić, B., Ristić, M., Jovanović, D., Prokolab, M., Stevan, B.,& Kočić, M.. (2011). Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in The 5th International Conference – Innovative technologies for joining advanced materials SUDURA publising house, Rumunija., 1-6. https://hdl.handle.net/21.15107/rcub_technorep_6094
Alil A, Katavić B, Ristić M, Jovanović D, Prokolab M, Stevan B, Kočić M. Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill. in The 5th International Conference – Innovative technologies for joining advanced materials. 2011;:1-6. https://hdl.handle.net/21.15107/rcub_technorep_6094 .
Alil, Ana, Katavić, Boris, Ristić, Marko, Jovanović, Dragan, Prokolab, Milan, Stevan, Budimir, Kočić, Milorad, "Structural and mechanical properties of different hard welded coatings for impact plate for ventilation mill" in The 5th International Conference – Innovative technologies for joining advanced materials (2011):1-6, https://hdl.handle.net/21.15107/rcub_technorep_6094 .