Improving the technology for hardfacing crane wheels

Anan'ev, S. P.; Korotkov, V.A.; Goloviznin, B.L.; Kozlov, V.V.

doi:10.1080/09507110701510410

“…For the above reasons and sustainable development, overlay welding has been widely used in industry to extend the lifetime of the worn-out parts, and/or to protect the wear of machine parts such as valve seat ring [1], chisel ploughshare [2], excavator teeth [3,4], pipeline valve [5], crane wheel [6,7], turbine blade [8], railway wheels [9,10], etc. Plasma transfer arc welding, gas metal arc welding, laser beam welding, and submerged arc welding are used for overlay welding [11].…”

Section: Introductionmentioning

confidence: 99%

“…The weld metal showed a self-quenching effect by martensitic transformation under service loading. Anan'ev et al [7] investigated the effect of welding wire on the microstructures and wear resistance of hardfaced crane wheels. Concerning the repair welding of railway vehicle wheels, Sci 2020, 2, 33 1 of 10 a lot of study on wheel flange hardfacing has been performed in Ukraine, and hardfaced wheels have been practically used.…”

Section: Introductionmentioning

confidence: 99%

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Goo

¹

,

Lee²

2020

Sci

5

0

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When a railway vehicle moves on a curved rail, sliding contact occurs between the rail head side and wheel flange, which wears the wheel flange down. The thinned flange needs to be restored above the required minimum thickness for structural safety. In this study, a new process and welding wire for restoring worn-out railway wheels by submerged arc welding was developed. To characterize the properties of the restored wheel, dilatometric analysis of phase transformation, SEM/EDX analyses, hardness measurement, and residual stress measurement using the X-ray diffraction method were performed. Finally, wear tests with full-size wheel/rail specimens were carried out. It was confirmed that the weld metal was composed of bainitic microstructures as intended, and welding defects were not observed. The wear amount of the restored wheel was greater than that of the base material, but it was less than half of the wear depth of the weld-repaired wheel with ferritic–pearlitic microstructures. The developed process seems applicable to industry.

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“…The weld metal showed a self-quenching effect by martensitic transformation under service loading. Anan'ev et al [7] investigated the effect of welding wire on the microstructures and wear resistance of hardfaced crane wheels. Concerning the repair welding of railway vehicle wheels, a Sci 2019, 1, 52 2 of 11 lot of study on wheel flange hardfacing has been performed in Ukraine, and hardfaced wheels have been practically used.…”

Section: Introductionmentioning

confidence: 99%

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Goo¹,

Lee²

2019

Sci

1

0

View full text Add to dashboard Cite

When a railway vehicle moves on a curved rail, sliding contact occurs between the rail head side and wheel flange, which wears the wheel flange down. The thinned flange needs to be restored above the required minimum thickness for structural safety. In this study, a new process and welding wire for restoring worn-out railway wheels by submerged arc welding was developed. To characterize the properties of the restored wheel, dilatometric analysis of phase transformation, SEM/EDX analyses, hardness measurement, and residual stress measurement using the X-ray diffraction method were performed. Finally, wear tests with full-size wheel/rail specimens were carried out. It was confirmed that the weld metal was composed of bainitic microstructures as intended, and welding defects were not observed. The wear amount of the restored wheel was greater than that of the base material, but it was less than half of the wear depth of the weld-repaired wheel with ferritic–pearlitic microstructures. The developed process seems applicable to industry.

show abstract

“…The weld metal showed a self-quenching effect by martensitic transformation under service loading. Anan'ev et al [7] investigated the effect of welding wire on the microstructures and wear resistance of hardfaced crane wheels. Concerning the repair welding of railway vehicle wheels, a lot of study on wheel flange hardfacing has been performed in Ukraine, and hardfaced wheels have been practically used.…”

Section: Introductionmentioning

confidence: 99%

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Goo¹,

Lee²

2019

Sci

0

View full text Add to dashboard Cite

When a railway vehicle moves on a curved rail, sliding contact occurs between the rail head side and wheel flange, which wears the wheel flange down. The thinned flange needs to be restored above the required minimum thickness for structural safety. In this study, a new process and welding wire for restoring worn-out railway wheels by submerged arc welding was developed. To characterize the properties of the restored wheel, dilatometric analysis of phase transformation, SEM/EDX analyses, hardness measurement, and residual stress measurement using the X-ray diffraction method were performed. Finally, wear tests with full-size wheel/rail specimens were carried out. It was confirmed that the weld metal was composed of bainitic microstructures as intended, and welding defects were not observed. The wear amount of the restored wheel was greater than that of the base material, but it was less than half of the wear depth of the weld-repaired wheel with ferritic–pearlitic microstructures. The developed process seems applicable to industry.

show abstract

Improving the technology for hardfacing crane wheels

Cited by 6 publications

References 0 publications

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

Railway Vehicle Wheel Restoration by Submerged Arc Welding and Its Characterization

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