Ultra-fine bainite steel manufacturing key technologies and applications

Ultra-fine bainite steel manufacturing key technologies and application of 2018 - 07 - 09 January 8, 2017 annual national science and technology awards conference was held in Beijing. Yanshan university professor zhang, of the finish of the ultra-fine bainite steel manufacturing key technology and application 'won the second prize of national technological invention, this is he after the 2002 national scientific and technological progress second prize of the second national prize. Professor zhang led his team to dive bainite steel for more than ten years, based on the phase transformation of bainite steel rate is slow, performance instability, such as technical difficulties to carry out research, invented the rapid transformation of ultrafine bainite steel key generic technology and manufacturing. Invention of low and medium carbon ultra-fine bainite steel comprehensive mechanical performance reached the level of maraging steel, the cost is only 1/10. Using this technology make the service life of the railway frog ( Overload) 3. 500 million tons. Invention of carburized surface of high carbon ultra-fine bainite core temperature low carbon martensite bearing steel and high carbon ultra-fine bainite bearing steel than conventional martensitic one times or so, the fatigue life of bearing steel by using this technology creates a high-end heavy-duty bearing to get a good application effect. Three new bearing steel grade were included in the national standard GB/T 3203 - 2016 carburizing bearing steel and metallurgy industry standard of YB/T 4572 - 2016 bearing steel roll ring and blank, heat treatment technology into the corresponding national standard 'GB/T XXXX rolling bearing conditions of high carbon chromium bearing steel parts heat treatment technology and industry standards' (JB/T 8881 - XXXX rolling bearing conditions of carburizing heat treatment technology. Bearing industry of ultra-fine bainite steel bearing highly, think its leading the bearing industry technology progress, describing it as' the second generation of bainite bearing, China bearing industry association will concentrate on spreading the work during the 'much starker choices-and graver consequences-in' technology. Invention of ultra high strength low alloy carbon ultra-fine bainite wear-resistant steel plate in a large number of application to port equipment, mining machinery and other engineering field, the wear resistance of steel plate and welding technology import Hardox600 wear-resistant steel plate, and the cost is only a third. Implements the high-end ultra high strength wear resistant steel plate manufacturing technology of its own, and exported to all the way along the line, and several European countries and regions. The results of the overall technology has reached the international leading level, has won the Ministry of Education technology invention award, paragraphs 1 and 2 technology invented the first prize in hebei province. Establish national standard in item 2, 1 item of metallurgical industry standards, 1 item of machinery industry standard, enterprise standard 1 item; A European product certification was gained; All the 1 person develop countries. Ultra-fine bainite steel used by panels of academic disciplines, review committee and award committee level 3 review, 2017 state science and technology awards were selected 271 projects and nine scientists. Among them, the national natural science 35 items, the first prize in item 2, the second prize of 33 items; Four national technological invention in 66, first prize, second prize, 62; State science and technology progress prize in 170, special-class award item 3, the first prize in 21 items ( Including innovation team) And second prize of 146. Seven foreign scientists won the award for international science and technology cooperation of the People's Republic of China.