Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization
Апстракт
Cold metallization includes the powder or wire application on the cold surface of components
by electric arc, gas, plasma, supersonic, gas-detonation method. It could be applied on all metals except on pure copper, but not on glass and non-metallic materials. Thickness of the layer which is being deposited ranges from 0.05 to 5 mm. Porosity of the layer is 3-15 %. Temperature of the parent material does not exceed 250°C, and therefore it sustains its mechanical properties. Taking into account the above mentioned, for the repair of damaged surfaces of components of turbine and hydromechanical equipment, the methodology of the electric arc technique was developed. At first, research regarding the possibility of application of cold metallization at damaged samples of metal sheets and pipes made of structural steel was carried out, and afterwards the same methodology was performed and confirmed during the repair of damaged surfaces of the flange at the horizontal Kaplan turbine with nomin...al power of 28 MW (Djerdap 2). Functional role of the flange, made of steel X5CrNi18-10, is to prevent the water from entering the enclosed space of the turbine shaft.
Кључне речи:
Kaplan turbine / Flange / Repair / Cold metallizationИзвор:
Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017, 2017, 536-540Издавач:
- University of Niš, Faculty of Mechanical Engineering and Society of Thermal Engineers of Serbia
Финансирање / пројекти:
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Arsić, Miodrag AU - Bošnjak, Srđan AU - Grabulov, Vencislav AU - Međo, Bojan AU - Mladenović, M. AU - Savić, Zoran PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5243 AB - Cold metallization includes the powder or wire application on the cold surface of components by electric arc, gas, plasma, supersonic, gas-detonation method. It could be applied on all metals except on pure copper, but not on glass and non-metallic materials. Thickness of the layer which is being deposited ranges from 0.05 to 5 mm. Porosity of the layer is 3-15 %. Temperature of the parent material does not exceed 250°C, and therefore it sustains its mechanical properties. Taking into account the above mentioned, for the repair of damaged surfaces of components of turbine and hydromechanical equipment, the methodology of the electric arc technique was developed. At first, research regarding the possibility of application of cold metallization at damaged samples of metal sheets and pipes made of structural steel was carried out, and afterwards the same methodology was performed and confirmed during the repair of damaged surfaces of the flange at the horizontal Kaplan turbine with nominal power of 28 MW (Djerdap 2). Functional role of the flange, made of steel X5CrNi18-10, is to prevent the water from entering the enclosed space of the turbine shaft. PB - University of Niš, Faculty of Mechanical Engineering and Society of Thermal Engineers of Serbia C3 - Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017 T1 - Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization EP - 540 SP - 536 UR - https://hdl.handle.net/21.15107/rcub_machinery_5243 ER -
@conference{ author = "Arsić, Miodrag and Bošnjak, Srđan and Grabulov, Vencislav and Međo, Bojan and Mladenović, M. and Savić, Zoran", year = "2017", abstract = "Cold metallization includes the powder or wire application on the cold surface of components by electric arc, gas, plasma, supersonic, gas-detonation method. It could be applied on all metals except on pure copper, but not on glass and non-metallic materials. Thickness of the layer which is being deposited ranges from 0.05 to 5 mm. Porosity of the layer is 3-15 %. Temperature of the parent material does not exceed 250°C, and therefore it sustains its mechanical properties. Taking into account the above mentioned, for the repair of damaged surfaces of components of turbine and hydromechanical equipment, the methodology of the electric arc technique was developed. At first, research regarding the possibility of application of cold metallization at damaged samples of metal sheets and pipes made of structural steel was carried out, and afterwards the same methodology was performed and confirmed during the repair of damaged surfaces of the flange at the horizontal Kaplan turbine with nominal power of 28 MW (Djerdap 2). Functional role of the flange, made of steel X5CrNi18-10, is to prevent the water from entering the enclosed space of the turbine shaft.", publisher = "University of Niš, Faculty of Mechanical Engineering and Society of Thermal Engineers of Serbia", journal = "Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017", title = "Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization", pages = "540-536", url = "https://hdl.handle.net/21.15107/rcub_machinery_5243" }
Arsić, M., Bošnjak, S., Grabulov, V., Međo, B., Mladenović, M.,& Savić, Z.. (2017). Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization. in Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017 University of Niš, Faculty of Mechanical Engineering and Society of Thermal Engineers of Serbia., 536-540. https://hdl.handle.net/21.15107/rcub_machinery_5243
Arsić M, Bošnjak S, Grabulov V, Međo B, Mladenović M, Savić Z. Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization. in Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017. 2017;:536-540. https://hdl.handle.net/21.15107/rcub_machinery_5243 .
Arsić, Miodrag, Bošnjak, Srđan, Grabulov, Vencislav, Međo, Bojan, Mladenović, M., Savić, Zoran, "Repair of damaged surfaces of components of turbine and hydromechanical equipment through the use of cold metallization" in Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia – SIMTERM 2017 (2017):536-540, https://hdl.handle.net/21.15107/rcub_machinery_5243 .