WHITE ETCHING CRACKS ROBUSTNESS INCREASE OF A ROLLER BEARING
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United States of America Patent
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Issued Date -
Mar 28, 2013
app pub date -
Sep 12, 2012
filing date -
Sep 23, 2011
priority date (Note) -
Abandoned
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Abstract
A method of increasing white etching cracks robustness of a roller bearing. The method comprises the steps of heating the roller bearing to a temperature of between 100° C. and 200° C. for a duration of time between 5 minutes and 2 hours while bringing the bearing raceway surface in contact with a chemical additive and forming a white layer on a bearing raceway surface of the roller bearing and/or a material zone at the bearing raceway surface which has a lower yield point or yield stress than the original material of the roller bearing.
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