Analysis of new data of SKF aircraft engine bearing

Source: Bearing network time: 2013-08-20

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One. M50NiL bearing steel <br> The high speed and high temperature of aero-engine have higher requirements for rolling bearings; M50NiL has improved fracture toughness; compared with other high temperature hardened bearing materials; microscopic arrangement and fatigue strength are also very good. One of the reasons is that there is no large particle carbide in the M50iL; thus; this steel is not sensitive to the fatigue crack caused by carbide.
two. Ceramic Materials <br> Gas turbine engines that power aircraft are extremely powerful; the operating conditions of engine spindle bearings are very high;
High-performance ceramic materials developed by SKF; at high temperatures above 1100 Â°C; in these ceramic materials; hot-pressed silicon nitride or iso-pressure silicon nitride (Si3N4). Silicon nitride is an aspirational material; Outstanding high temperature strength and hardness; and favorable strength/component contact.
three. Solid smoothing agent <br> Because of the high temperature of the calculation of aircraft engines in the future; it is useful to smooth the bearings under such working conditions; it is well known; when the temperature exceeds the limit promised by liquid smoothing agents; High temperature, functionally stable solid compounds such as oxides, sulfides and fluorides of different chemical elements.
SKF silicon nitride is smoothed with graphite rich in high temperature additives; its appearance can form a collision-resistant chemical film; it can reduce the collision coefficient of silicon nitride;

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