Japan IKO bearing seal selection of commonly used materials processing characteristics

The service life of bearing seal and use level depends largely on the material. Sealing material has close relation with the development and technological progress, nearly 30 years, the development of the sealing material is very rapid, the types of bearing seal material, use parameters also enhances unceasingly. With the development of modern industry, the operation condition of bearing seal is more and more strict, such as high temperature, low temperature, high pressure, strong corrosive medium, flammable and explosive medium etc. , thus to bearing seal material requirements is more and more high. Correct selection of bearing seal materials, especially the ring and static ring, auxiliary sealing materials, to guarantee the normal work of the Japan IKO bearing seal, prolong the service life of bearing seal has the extremely vital significance. We know that Japan IKO bearing seal is made up of several parts, the material is according to the needs of the components, structure, the role of to select and use conditions. This chapter simply introduces the friction pair group for material and other components. A, the friction pair group on the material in a sense, the friction pair group is material mechanical properties, chemical properties, the comprehensive application of the friction characteristics. In order to ensure the seal friction pair has a long service life and good sealing performance, when choosing friction pair group of materials, attention should be paid to the following principles: ( 1) Wear resistance is one of the most important indicators of friction pair material, which is less abrasion, long service life. ( 2) Good corrosion resistance. The result of wear and tear will reduce the service life, corrosion will increase the space of end face, increase the leakage of medium. ( 3) Japan IKO bearing high strength. To avoid damage and transverse deformation intensity, must choose to have certain bearing strength of the material. ( 4) Good heat resistance and heat transfer performance. Frictional heat can bring adverse effect to the abrasion of friction pair, to prevent the friction pair of permissible stress of thermal stress is greater than material, is advantageous to the liquid film between end face, face the material must have a good heat resistance and thermal conductivity. ( 5) The friction coefficient is small and has certain self lubrication. Friction coefficient directly affects the size of the friction heat, in many cases friction end is not in good lubrication condition, so the friction pair group's choice of materials, these two factors must be considered. Has so far failed to a kind of material can meet the above requirements. When select material, should be aimed at the main factors influencing the sealing performance, and reasonable mechanism design to make up for the lack of material itself, as far as possible to meet the requirements of the seal. Carbide carbide has many excellent properties, such as high hardness, wear resistance, high temperature resistant, small linear expansion coefficient, low friction coefficient, groups of good performance, etc. Cemented carbide is a type of the alloy containing drill, chromium and chin, the drill is a kind of adhesive, drill content is higher, the strength of the material. Japan IKO bearing short and thin also decides the axial stiffness of it is very good, the deformation of axial is generally not, but a bad image, so the processing time to consider from very attentively. Bearing technology is high processing requirements, there are so few machining features: 1. Precision machining, bearing a lot of grinding, the requirements of the precision is very high, the unit of measure is used microns. When processing, especially the ring must be very careful. 2. More process, and one is forming. Bearings are basically standardized products, so very pay attention to when processing precision, because Japan IKO bearings are mass production. Must be in accordance with the precision of the machining process.