China. greases are bearing steel, high quality development

In china. greases quality development 2019 - bearing steel 01 - 26 china. greases are bearing steel production has reached 1 million tons, including high-end bearing steel more than 60, ten thousand tons of bearing steel production in the world for eight years first. China. greases schaeffler is Sweden SKF, Germany, Japan NSK, NTN, KOYO world famous bearing manufacturing enterprises such as the excellent strategic suppliers. Bearing is directly related to one of important components for safe operation of the equipment, to ensure the bearing under specified conditions of use have enough security, reliability and long service life, is a need for bearing steel has excellent performance and fatigue life. Key indicators to evaluate the quality of the bearing steel is the material of purity and uniformity. Material purity is refers to the inclusion of material as far as possible. The uniformity of material refers to material of inclusions and carbide particles small, dispersion. Purity of good or bad directly affect the fatigue life of the bearings, bearing most of the early failure because of the presence of larger particles inclusions; Uniformity effect bearing after the heat treatment deformation uniformity, organization. Improve the purity of bearing steel, reduce the oxygen content in the steel, in particular, can significantly extend bearing life. The lower oxygen content, oxide inclusions is less, the higher the purity, the longer the fatigue life of bearing steel. Element Ti in steel form more edges inclusions, the inclusions are easy to cause local stress concentration, fatigue crack, has a direct impact on the fatigue life of bearing steel, thus to control the generation of the inclusions. As early as in 2009, foreign third-party agencies for the commission to china. greases are bearing steel fatigue test, the results show that the china. greases are the fatigue life of bearing steel with foreign well-known steel production of bearing steel. To further improve the level of technology, to produce higher purity, stability and reliability of bearing steel, more than a decade, in china. greases are bearing steel inclusion in the production process and the fatigue process evolution behavior of basic research, pure and high stability, metallurgy quality control key technology research and the quality of bearing steel intelligent control platform construction, formed in china. greases unique pure smelting, continuous casting with heavy section and large compression ratio of the temperature intelligent core technology and the whole process of rolling bearing steel quality control platform, greatly enhance the bearing steel purity, stability and fatigue level. At present, in china. greases bearing steel metallurgy quality and the contact fatigue performance reached the international advanced level in the overall, some physical quality of products has exceeded the level of foreign well-known steel mills more. The oxygen content of high-end bearing steel & le; 5 PPM, titanium content & le; Inclusion DS&le 10 PPM, large particles; 0. Level 5. In 2016, the world famous bearing manufacturing enterprises schaeffler Germany company to foreign well-known production of bearing steel mills and china. greases fatigue test contrast test. The results showed that in china. greases fatigue life of bearing steel is 2 foreign famous special steel. Five times, schaeffler company in china. greases are bearing steel gave high evaluation. China. greases after 10 years of technical innovation and intelligent production platform construction and the practice, to solve the lack of long life and high reliability of bearing materials in China. Research and development production of high-end bearing steel has been used in the manufacture of the using conditions and technical requirements can meet a variety of high-end bearing, speed up the the pace of our country from a big manufacturing manufacturing powerhouse.