TY  - CONF
AU  - Miladinov, Milan
AU  - Sedmak, Simon
AU  - Đorđević, Branislav
AU  - Sedmak, Aleksandar
AU  - Vučetić, Filip
AU  - Milivojević, Aleksandar
PY  - 2023
UR  - https://www.sciencedirect.com/journal/procedia-structural-integrity/vol/48/suppl/C
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7101
AB  - Bucket-wheel excavators are continuously working machines for removal of waste and useful materials in open-pit mines, mainly used for mining of lignite. The purpose of a tooth gear ring is to rotate the excavator using two reducers. Due to this, the structural integrity of such elements is of great importance for the safe and reliable operation of the bucket-wheel excavator as a whole. In order to ensure its proper function, non-destructive testing (NDT) methods (namely magnetic particles testing) was performed after casting of gears. NDT revealed the presence of cracks with varying lengths (10-110 mm), which were located in the gear teeth, its main body and the openings used for connections between segments. For this reason, it was necessary to adopt a repair welding technology which would eliminate the cracks. Since the tooth gear ring was made of GS-40MnCrSi3V low-alloyed cast steel, electrode 42 4 B 42 H5 (designation according to EN 499E) was selected as filler material, due to its exceptional mechanical properties, suitability for welding of low-carbon low-alloyed steels and low hydrogen content. Manual arc welding was the procedure used in this case. Since these repairs were all performed on the surface of the tooth gear ring segments, final NDT included only magnetic particle and penetrant testing, both of which had shown that the repair technology was successfully applied, i.e. not new defects were detected in the repaired gear ring elements.
PB  - Elsevier B.V.
C3  - Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)
T1  - Repairing of cracks on tooth gear ring of a bucket-wheel excavator
EP  - 32
SP  - 27
VL  - 48
DO  - 10.1016/j.prostr.2023.07.106
ER  - 

@conference{
author = "Miladinov, Milan and Sedmak, Simon and Đorđević, Branislav and Sedmak, Aleksandar and Vučetić, Filip and Milivojević, Aleksandar",
year = "2023",
abstract = "Bucket-wheel excavators are continuously working machines for removal of waste and useful materials in open-pit mines, mainly used for mining of lignite. The purpose of a tooth gear ring is to rotate the excavator using two reducers. Due to this, the structural integrity of such elements is of great importance for the safe and reliable operation of the bucket-wheel excavator as a whole. In order to ensure its proper function, non-destructive testing (NDT) methods (namely magnetic particles testing) was performed after casting of gears. NDT revealed the presence of cracks with varying lengths (10-110 mm), which were located in the gear teeth, its main body and the openings used for connections between segments. For this reason, it was necessary to adopt a repair welding technology which would eliminate the cracks. Since the tooth gear ring was made of GS-40MnCrSi3V low-alloyed cast steel, electrode 42 4 B 42 H5 (designation according to EN 499E) was selected as filler material, due to its exceptional mechanical properties, suitability for welding of low-carbon low-alloyed steels and low hydrogen content. Manual arc welding was the procedure used in this case. Since these repairs were all performed on the surface of the tooth gear ring segments, final NDT included only magnetic particle and penetrant testing, both of which had shown that the repair technology was successfully applied, i.e. not new defects were detected in the repaired gear ring elements.",
publisher = "Elsevier B.V.",
journal = "Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)",
title = "Repairing of cracks on tooth gear ring of a bucket-wheel excavator",
pages = "32-27",
volume = "48",
doi = "10.1016/j.prostr.2023.07.106"
}

Miladinov, M., Sedmak, S., Đorđević, B., Sedmak, A., Vučetić, F.,& Milivojević, A.. (2023). Repairing of cracks on tooth gear ring of a bucket-wheel excavator. in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)
Elsevier B.V.., 48, 27-32.
https://doi.org/10.1016/j.prostr.2023.07.106

Miladinov M, Sedmak S, Đorđević B, Sedmak A, Vučetić F, Milivojević A. Repairing of cracks on tooth gear ring of a bucket-wheel excavator. in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023). 2023;48:27-32.
doi:10.1016/j.prostr.2023.07.106 .

Miladinov, Milan, Sedmak, Simon, Đorđević, Branislav, Sedmak, Aleksandar, Vučetić, Filip, Milivojević, Aleksandar, "Repairing of cracks on tooth gear ring of a bucket-wheel excavator" in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), 48 (2023):27-32,
https://doi.org/10.1016/j.prostr.2023.07.106 . .

TY  - CONF
AU  - Miladinov, Milan
AU  - Sedmak, Simon
AU  - Đorđević, Branislav
AU  - Petrović, Ana
AU  - Vučetić, Filip
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7285
C3  - ISCAME - 9th International Scientific Conference on Advances in Mechanical Engineering
T1  - Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator
SP  - 67
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7285
ER  - 

@conference{
author = "Miladinov, Milan and Sedmak, Simon and Đorđević, Branislav and Petrović, Ana and Vučetić, Filip",
year = "2023",
journal = "ISCAME - 9th International Scientific Conference on Advances in Mechanical Engineering",
title = "Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator",
pages = "67",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7285"
}

Miladinov, M., Sedmak, S., Đorđević, B., Petrović, A.,& Vučetić, F.. (2023). Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator. in ISCAME - 9th International Scientific Conference on Advances in Mechanical Engineering, 67.
https://hdl.handle.net/21.15107/rcub_machinery_7285

Miladinov M, Sedmak S, Đorđević B, Petrović A, Vučetić F. Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator. in ISCAME - 9th International Scientific Conference on Advances in Mechanical Engineering. 2023;:67.
https://hdl.handle.net/21.15107/rcub_machinery_7285 .

Miladinov, Milan, Sedmak, Simon, Đorđević, Branislav, Petrović, Ana, Vučetić, Filip, "Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator" in ISCAME - 9th International Scientific Conference on Advances in Mechanical Engineering (2023):67,
https://hdl.handle.net/21.15107/rcub_machinery_7285 .

TY  - CONF
AU  - Miladinov, Milan
AU  - Sedmak, Simon
AU  - Đorđević, Branislav R.
AU  - Petrović, Ana
AU  - Vučetić, Filip
PY  - 2023
UR  - https://main.scientific.net/book/book-of-abstracts-from-9th-international-scientific-conference-on-advances-in-mechanical-engineering/978-3-0364-1445-4/ebook
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7170
AB  - This paper deals with damage analysis of gear ring after manufacturing process, just before in-service period. Tooth gear ring segments were made of 40MnCrSi3V low-alloyed cast steel, which chemical composition and mechanical properties were given in table 1 and 2, respectively. Concerning parent material characteristics, in this case low-alloyed cast steel 40 MnCrSi3V, inspection and control of gear segments were necessary to be performed after manufacturing. Non-destructive testing method with magnet particles (MT) of fluorescent suspension of particle size 3 µm was performed for potential defects detection. Surface indications were observed on 8 out of 12 gear segments on these new parts, where the lengths of the cracks goes up to 110 mm. Some of the observed defects were shown in Fig. 1. Defects were located in segments main body the gear teeth, its main body etc. Taking into account aforementioned, observed defects on new gear ring segments were caused in manufacturing process i.e. by casting process and inadequate cooling rate.
PB  - Trans Tech Publications Ltd, Switzerland
C3  - Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME, November 9-10, 2023, Debrecen, Hungary)
T1  - Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator
SP  - 67
VL  - 2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7170
ER  - 

@conference{
author = "Miladinov, Milan and Sedmak, Simon and Đorđević, Branislav R. and Petrović, Ana and Vučetić, Filip",
year = "2023",
abstract = "This paper deals with damage analysis of gear ring after manufacturing process, just before in-service period. Tooth gear ring segments were made of 40MnCrSi3V low-alloyed cast steel, which chemical composition and mechanical properties were given in table 1 and 2, respectively. Concerning parent material characteristics, in this case low-alloyed cast steel 40 MnCrSi3V, inspection and control of gear segments were necessary to be performed after manufacturing. Non-destructive testing method with magnet particles (MT) of fluorescent suspension of particle size 3 µm was performed for potential defects detection. Surface indications were observed on 8 out of 12 gear segments on these new parts, where the lengths of the cracks goes up to 110 mm. Some of the observed defects were shown in Fig. 1. Defects were located in segments main body the gear teeth, its main body etc. Taking into account aforementioned, observed defects on new gear ring segments were caused in manufacturing process i.e. by casting process and inadequate cooling rate.",
publisher = "Trans Tech Publications Ltd, Switzerland",
journal = "Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME, November 9-10, 2023, Debrecen, Hungary)",
title = "Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator",
pages = "67",
volume = "2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7170"
}

Miladinov, M., Sedmak, S., Đorđević, B. R., Petrović, A.,& Vučetić, F.. (2023). Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME, November 9-10, 2023, Debrecen, Hungary)
Trans Tech Publications Ltd, Switzerland., 2, 67.
https://hdl.handle.net/21.15107/rcub_machinery_7170

Miladinov M, Sedmak S, Đorđević BR, Petrović A, Vučetić F. Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator. in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME, November 9-10, 2023, Debrecen, Hungary). 2023;2:67.
https://hdl.handle.net/21.15107/rcub_machinery_7170 .

Miladinov, Milan, Sedmak, Simon, Đorđević, Branislav R., Petrović, Ana, Vučetić, Filip, "Damage Analysis on Tooth Gear Ring of a Bucket-Wheel Excavator" in Book of Abstracts from 9th International Scientific Conference on Advances in Mechanical Engineering (ISCAME, November 9-10, 2023, Debrecen, Hungary), 2 (2023):67,
https://hdl.handle.net/21.15107/rcub_machinery_7170 .