Metallurgical Investigation of a Prematurely Failed Roller Bearing Used in the Support and Tilting System of a Steel Making Converter Used in an Integrated Steel Plant
An extensive metallurgical investigation was carried out on samples of a failed roller bearing from the support and tilting system of a basic oxygen furnace converter used in the steel melting shop of an integrated steel plant. The converter bearing was fabricated from low-carbon, carburizing grade steel and had failed in service within a year of fitting to a repaired shaft. Microscopic observations of both the broken roller and inner-race samples revealed subsurface cracking and preponderance of brittle oxide and other macroinclusions. Electron probe microanalysis studies confirmed that the brittle oxides that formed stringers were alumina, and the other...
Amitava Ray, S.K. Dhua, K.B. Mishra, S. Jha, Metallurgical Investigation of a Prematurely Failed Roller Bearing Used in the Support and Tilting System of a Steel Making Converter Used in an Integrated Steel Plant, ASM Failure Analysis Case Histories: Steelmaking and Thermal Processing Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.steel.c9001645
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