Cracking due to repair welding of the treiber roll
Апстракт
Repair welding has caused crack initiation in the upper Treiber roll in the steel works plant mill at Zelezara in Smederevo. The upper and lower Treiber rolls serve the purpose of folding and directing rolled metal strips, supplied by the output rollers to the coiling mandrel. The parent material of the upper Treiber roll is S235JO. Unsuccessful welding resulted in a series of further activities to remove cracks. In addition, the cracks are identified on the Treiber roll for easier designation and monitoring while machining. Hardness tests have been performed on specific locations within the welded hard layer. After machining and removal of the whole welded layer with defects, it is determined that the welding activities contributed to the occurrence of a number of cracks in the parent material, which did not exist prior to surfacing. Hence, steps that need to be taken in order to eliminate these cracks in the parent material are suggested at the end of this paper.
Кључне речи:
repair welding / preheating / machining / human error / cracksИзвор:
Structural Integrity and Life, 2017, 17, 2, 133-138Издавач:
- Institut za ispitivanje materijala, Beograd
Финансирање / пројекти:
- Развој савремених метода дијагностике и испитивања машинских структура (RS-MESTD-Technological Development (TD or TR)-35040)
- Интегритет опреме под притиском при истовременом деловању замарајућег оптерећења и температуре (RS-MESTD-Technological Development (TD or TR)-35011)
Институција/група
Inovacioni centarTY - JOUR AU - Tanasković, Drakče AU - Đorđević, Branislav R. AU - Tatić, Uroš AU - Sedmak, Simon AU - Gajin, Marko PY - 2017 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2729 AB - Repair welding has caused crack initiation in the upper Treiber roll in the steel works plant mill at Zelezara in Smederevo. The upper and lower Treiber rolls serve the purpose of folding and directing rolled metal strips, supplied by the output rollers to the coiling mandrel. The parent material of the upper Treiber roll is S235JO. Unsuccessful welding resulted in a series of further activities to remove cracks. In addition, the cracks are identified on the Treiber roll for easier designation and monitoring while machining. Hardness tests have been performed on specific locations within the welded hard layer. After machining and removal of the whole welded layer with defects, it is determined that the welding activities contributed to the occurrence of a number of cracks in the parent material, which did not exist prior to surfacing. Hence, steps that need to be taken in order to eliminate these cracks in the parent material are suggested at the end of this paper. PB - Institut za ispitivanje materijala, Beograd T2 - Structural Integrity and Life T1 - Cracking due to repair welding of the treiber roll EP - 138 IS - 2 SP - 133 VL - 17 UR - https://hdl.handle.net/21.15107/rcub_machinery_2729 ER -
@article{ author = "Tanasković, Drakče and Đorđević, Branislav R. and Tatić, Uroš and Sedmak, Simon and Gajin, Marko", year = "2017", abstract = "Repair welding has caused crack initiation in the upper Treiber roll in the steel works plant mill at Zelezara in Smederevo. The upper and lower Treiber rolls serve the purpose of folding and directing rolled metal strips, supplied by the output rollers to the coiling mandrel. The parent material of the upper Treiber roll is S235JO. Unsuccessful welding resulted in a series of further activities to remove cracks. In addition, the cracks are identified on the Treiber roll for easier designation and monitoring while machining. Hardness tests have been performed on specific locations within the welded hard layer. After machining and removal of the whole welded layer with defects, it is determined that the welding activities contributed to the occurrence of a number of cracks in the parent material, which did not exist prior to surfacing. Hence, steps that need to be taken in order to eliminate these cracks in the parent material are suggested at the end of this paper.", publisher = "Institut za ispitivanje materijala, Beograd", journal = "Structural Integrity and Life", title = "Cracking due to repair welding of the treiber roll", pages = "138-133", number = "2", volume = "17", url = "https://hdl.handle.net/21.15107/rcub_machinery_2729" }
Tanasković, D., Đorđević, B. R., Tatić, U., Sedmak, S.,& Gajin, M.. (2017). Cracking due to repair welding of the treiber roll. in Structural Integrity and Life Institut za ispitivanje materijala, Beograd., 17(2), 133-138. https://hdl.handle.net/21.15107/rcub_machinery_2729
Tanasković D, Đorđević BR, Tatić U, Sedmak S, Gajin M. Cracking due to repair welding of the treiber roll. in Structural Integrity and Life. 2017;17(2):133-138. https://hdl.handle.net/21.15107/rcub_machinery_2729 .
Tanasković, Drakče, Đorđević, Branislav R., Tatić, Uroš, Sedmak, Simon, Gajin, Marko, "Cracking due to repair welding of the treiber roll" in Structural Integrity and Life, 17, no. 2 (2017):133-138, https://hdl.handle.net/21.15107/rcub_machinery_2729 .