Common failures in aluminothermic welding process and proposal for their prevention
Apstrakt
Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibilityand ease of performance, both during the reconstruction and construction of a new track, as well asin the ongoing maintenance of the continuity of the track. Although this procedure is applying foralmost hundred years with constant improvements, it still has serious shortcomings. Theshortcomings primarily relate to quality variability, which directly dependent on the training of theoperator and their compliance with the prescribed instructions and procedures, during the weldingprocess. The most common working mistakes are very similar to the casting failures that occur duringthe usual casting of steel. The process is susceptible because the welded joint is in constant straincondition caused by the structural differences between primary material and filler material (thermitesteel). This paper presents some working failures on the samples from the track in exploitation, aswell as the a...nalysis of the causes of their formation. Also, the innovative way of performingaluminum welding of the rail was shown, which minimizes working mistakes and prevents workingfailures. The results of the quality testing of welded joints are done according to the EU standards.They pointed out that the implementation of this procedure provides greater safety of rail transportas well as its coherence because it significantly reduces the impact of faults of welding teams.
Ključne reči:
aluminothermic welding / rails / failures / porosityIzvor:
Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018, 2018, 343-349Izdavač:
- University of Zagreb, Faculty of Metallurgy
Finansiranje / projekti:
- Inovativna sinergija nus-produkata, minimizacije otpada i čistije proizvodnje u metalurgiji (RS-MESTD-Technological Development (TD or TR)-34033)
Kolekcije
Institucija/grupa
Inovacioni centarTY - CONF AU - Manojlović, Vaso AU - Gavrilovski, Milorad AU - Kamberović, Željko AU - Momčilović, Dejan B. PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/7502 AB - Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibilityand ease of performance, both during the reconstruction and construction of a new track, as well asin the ongoing maintenance of the continuity of the track. Although this procedure is applying foralmost hundred years with constant improvements, it still has serious shortcomings. Theshortcomings primarily relate to quality variability, which directly dependent on the training of theoperator and their compliance with the prescribed instructions and procedures, during the weldingprocess. The most common working mistakes are very similar to the casting failures that occur duringthe usual casting of steel. The process is susceptible because the welded joint is in constant straincondition caused by the structural differences between primary material and filler material (thermitesteel). This paper presents some working failures on the samples from the track in exploitation, aswell as the analysis of the causes of their formation. Also, the innovative way of performingaluminum welding of the rail was shown, which minimizes working mistakes and prevents workingfailures. The results of the quality testing of welded joints are done according to the EU standards.They pointed out that the implementation of this procedure provides greater safety of rail transportas well as its coherence because it significantly reduces the impact of faults of welding teams. PB - University of Zagreb, Faculty of Metallurgy C3 - Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018 T1 - Common failures in aluminothermic welding process and proposal for their prevention EP - 349 SP - 343 UR - https://hdl.handle.net/21.15107/rcub_machinery_7502 ER -
@conference{ author = "Manojlović, Vaso and Gavrilovski, Milorad and Kamberović, Željko and Momčilović, Dejan B.", year = "2018", abstract = "Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibilityand ease of performance, both during the reconstruction and construction of a new track, as well asin the ongoing maintenance of the continuity of the track. Although this procedure is applying foralmost hundred years with constant improvements, it still has serious shortcomings. Theshortcomings primarily relate to quality variability, which directly dependent on the training of theoperator and their compliance with the prescribed instructions and procedures, during the weldingprocess. The most common working mistakes are very similar to the casting failures that occur duringthe usual casting of steel. The process is susceptible because the welded joint is in constant straincondition caused by the structural differences between primary material and filler material (thermitesteel). This paper presents some working failures on the samples from the track in exploitation, aswell as the analysis of the causes of their formation. Also, the innovative way of performingaluminum welding of the rail was shown, which minimizes working mistakes and prevents workingfailures. The results of the quality testing of welded joints are done according to the EU standards.They pointed out that the implementation of this procedure provides greater safety of rail transportas well as its coherence because it significantly reduces the impact of faults of welding teams.", publisher = "University of Zagreb, Faculty of Metallurgy", journal = "Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018", title = "Common failures in aluminothermic welding process and proposal for their prevention", pages = "349-343", url = "https://hdl.handle.net/21.15107/rcub_machinery_7502" }
Manojlović, V., Gavrilovski, M., Kamberović, Ž.,& Momčilović, D. B.. (2018). Common failures in aluminothermic welding process and proposal for their prevention. in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018 University of Zagreb, Faculty of Metallurgy., 343-349. https://hdl.handle.net/21.15107/rcub_machinery_7502
Manojlović V, Gavrilovski M, Kamberović Ž, Momčilović DB. Common failures in aluminothermic welding process and proposal for their prevention. in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018. 2018;:343-349. https://hdl.handle.net/21.15107/rcub_machinery_7502 .
Manojlović, Vaso, Gavrilovski, Milorad, Kamberović, Željko, Momčilović, Dejan B., "Common failures in aluminothermic welding process and proposal for their prevention" in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018 (2018):343-349, https://hdl.handle.net/21.15107/rcub_machinery_7502 .