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The service life and the use level of bearing seal depends largely on the material. Sealing material development and technology progress are closely related, in the past 30 years, the development of the sealing material is very rapid, kinds of bearing sealing material is constantly increasing, the use of parameter is also rising. With the development of modern industry, more and more harsh operating conditions of bearing seal, such as high temperature, low temperature, high pressure, various strong corrosive medium, flammable and explosive medium, so the material requirements of the bearing seal is more and more high. The correct selection of bearing sealing materials, especially the moving ring, static ring, the auxiliary sealing materials, to ensure the normal work of the Japanese IKO bearing seal, has the extremely vital significance to extend the service life of the bearing seal.
We know that the sealing Japan IKO bearing is composed of several parts, the material is according to the function, structural parts played by the needs and conditions of use to select. The material in this chapter simply introduces friction group of materials and other elements. A group of friction materials, speak from a certain meaning, is the comprehensive application of material mechanical properties, chemical properties, friction characteristics of friction group. Friction has a long service life and good sealing performance in order to ensure the sealing, in the selection of friction group of materials, attention should be paid to the following principles:
(1) the wear resistance is one of the most important index of friction material, wear less, long service life.
(2) good corrosion resistance. The wear results will reduce the service life, corrosion will be increased gap end surface, make the medium leakage increased.
(3) Japan IKO bearing high strength. Produce strength failure and end to avoid the distortion, must choose has a certain bearing strength of materials.