| 20090288742 | METHOD FOR INCREASING THE FATIGUE STRENGTH OF A PREDOMINANTLY STEEL MECHANICAL PART OF A WIND TURBINE AND/OR FOR REDUCING THE TENDENCY TO FORM WHAT ARE CALLED "WHITE ETCHING CRACKS" OR "BRITTLE FLAKES" IN SUCH STEEL MECHANICAL PARTS - Method for increasing the fatigue strength of a mechanical part of a wind turbine and/or for reducing the tendency to form what are called “white etching cracks” or “brittle flakes” in such a bearing, which includes making one or several of the bearing rings and/or roller elements concerned of the bearing at least partly of a hardened steel having a carbon content between 0.4 and 0.8 percent by weight. | 11-26-2009 |
