Selection of the most appropriate welding technology for hardfacing of bucket teeth
2015
Authors
Lazić, VukićSedmak, Aleksandar
Nikolić, Ružica R.
Mutavdzić, Milan
Aleksandrović, Srbislav
Krstić, Božidar
Milosavljević, Dragan I.
Article (Published version)
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A possibility of extending the service life of the working parts of construction machinery with particular attention to hardfacing of loader bucket teeth was investigated. In the first part of this paper the tribological processes typical for this machinery is analysed. Worn excavator parts are made of conditionally weldable cast steel that requires a special hardfacing technology, so numerous investigations were performed to obtain the most appropriate technology. In the experimental part of the paper, the selection of the optimum hardfacing technology for bucket teeth and the procedure of the manual arc hardfacing are presented. The samples were first hardfaced using different techniques and technologies and then the microstructure and microhardness of characteristic hardfaced layers were studied. Specially prepared samples were used for tribological investigations. The results of experimental investigations enabled the selection of the most suitable hardfacing technology and its app...lication to real parts. The bucket teeth, with their hardfaced layers applied vertically, horizontally or in a honeycomb pattern were mounted onto a loader bucket, alternated with the new non-hardfaced teeth and their performance during the operation was regularly monitored. After a certain period, the degrees of the wear for the non-hardfaced and differently hardfaced teeth were measured. Taking into account both technical and economic factors, the most suitable hardfacing technology was determined.
Keywords:
wear / microstructure / loader bucket teeth / hardness / hardfacing / friction coefficientSource:
Materiali in Tehnologije, 2015, 49, 1, 165-172Publisher:
- Institute of Metals Technology
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Inovacioni centarTY - JOUR AU - Lazić, Vukić AU - Sedmak, Aleksandar AU - Nikolić, Ružica R. AU - Mutavdzić, Milan AU - Aleksandrović, Srbislav AU - Krstić, Božidar AU - Milosavljević, Dragan I. PY - 2015 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2176 AB - A possibility of extending the service life of the working parts of construction machinery with particular attention to hardfacing of loader bucket teeth was investigated. In the first part of this paper the tribological processes typical for this machinery is analysed. Worn excavator parts are made of conditionally weldable cast steel that requires a special hardfacing technology, so numerous investigations were performed to obtain the most appropriate technology. In the experimental part of the paper, the selection of the optimum hardfacing technology for bucket teeth and the procedure of the manual arc hardfacing are presented. The samples were first hardfaced using different techniques and technologies and then the microstructure and microhardness of characteristic hardfaced layers were studied. Specially prepared samples were used for tribological investigations. The results of experimental investigations enabled the selection of the most suitable hardfacing technology and its application to real parts. The bucket teeth, with their hardfaced layers applied vertically, horizontally or in a honeycomb pattern were mounted onto a loader bucket, alternated with the new non-hardfaced teeth and their performance during the operation was regularly monitored. After a certain period, the degrees of the wear for the non-hardfaced and differently hardfaced teeth were measured. Taking into account both technical and economic factors, the most suitable hardfacing technology was determined. PB - Institute of Metals Technology T2 - Materiali in Tehnologije T1 - Selection of the most appropriate welding technology for hardfacing of bucket teeth EP - 172 IS - 1 SP - 165 VL - 49 UR - https://hdl.handle.net/21.15107/rcub_machinery_2176 ER -
@article{ author = "Lazić, Vukić and Sedmak, Aleksandar and Nikolić, Ružica R. and Mutavdzić, Milan and Aleksandrović, Srbislav and Krstić, Božidar and Milosavljević, Dragan I.", year = "2015", abstract = "A possibility of extending the service life of the working parts of construction machinery with particular attention to hardfacing of loader bucket teeth was investigated. In the first part of this paper the tribological processes typical for this machinery is analysed. Worn excavator parts are made of conditionally weldable cast steel that requires a special hardfacing technology, so numerous investigations were performed to obtain the most appropriate technology. In the experimental part of the paper, the selection of the optimum hardfacing technology for bucket teeth and the procedure of the manual arc hardfacing are presented. The samples were first hardfaced using different techniques and technologies and then the microstructure and microhardness of characteristic hardfaced layers were studied. Specially prepared samples were used for tribological investigations. The results of experimental investigations enabled the selection of the most suitable hardfacing technology and its application to real parts. The bucket teeth, with their hardfaced layers applied vertically, horizontally or in a honeycomb pattern were mounted onto a loader bucket, alternated with the new non-hardfaced teeth and their performance during the operation was regularly monitored. After a certain period, the degrees of the wear for the non-hardfaced and differently hardfaced teeth were measured. Taking into account both technical and economic factors, the most suitable hardfacing technology was determined.", publisher = "Institute of Metals Technology", journal = "Materiali in Tehnologije", title = "Selection of the most appropriate welding technology for hardfacing of bucket teeth", pages = "172-165", number = "1", volume = "49", url = "https://hdl.handle.net/21.15107/rcub_machinery_2176" }
Lazić, V., Sedmak, A., Nikolić, R. R., Mutavdzić, M., Aleksandrović, S., Krstić, B.,& Milosavljević, D. I.. (2015). Selection of the most appropriate welding technology for hardfacing of bucket teeth. in Materiali in Tehnologije Institute of Metals Technology., 49(1), 165-172. https://hdl.handle.net/21.15107/rcub_machinery_2176
Lazić V, Sedmak A, Nikolić RR, Mutavdzić M, Aleksandrović S, Krstić B, Milosavljević DI. Selection of the most appropriate welding technology for hardfacing of bucket teeth. in Materiali in Tehnologije. 2015;49(1):165-172. https://hdl.handle.net/21.15107/rcub_machinery_2176 .
Lazić, Vukić, Sedmak, Aleksandar, Nikolić, Ružica R., Mutavdzić, Milan, Aleksandrović, Srbislav, Krstić, Božidar, Milosavljević, Dragan I., "Selection of the most appropriate welding technology for hardfacing of bucket teeth" in Materiali in Tehnologije, 49, no. 1 (2015):165-172, https://hdl.handle.net/21.15107/rcub_machinery_2176 .