Ensure accuracy of SKF imported bearings operating at high temperatures and knowledge requirements - bearing service life

SKF bearing steel requirements for work under the high temperature of modern technologies such as nuclear power system, such as jet engines and gas turbine working temperature for baidu often that thousands of degrees, apparently ordinary imported SKF bearing steel cannot be applied. Must use high temperature bearing steel or other high temperature resistant materials. Often think of more than 120 ℃ temperature conditions, and high temperature working conditions, the ordinary bearing steel is organization change and the yield strength is reduced, accuracy loss step by step; When imported SKF bearing operating temperature more than imported SKF bearing material when the tempering temperature, its hardness is markedly reduced, working temperature over 180 ℃ hardness fell sharply, and soon in early fatigue and wear. Ensure accuracy of SKF imported bearings operating at high temperatures and the center link is to ensure that the service life of imported SKF bearing at high temperatures with sufficient rigidity and stability of size and shape, so for high temperature bearing steel is put forward the following requirements: 1) Under the high temperature hardness is not lower than HRC50 ~ 56. The microstructure stability; 2) High temperature and good dimensional stability, small temperature coefficient of expansion, no significant changes in organization, good creep resistance, residual stress; 3) Good oxidation resistance, generate the oxide film and the substrate combination of strong, and good abrasion resistance and fatigue strength, good thermal shock resistance, can withstand the temperature change of faster, better thermal conductivity; 4) As imported SKF bearing steel by other materials properties.