The key process technology of rare earth steel smelting and continuous casting production developed by SGJT Iron and Steel Technology Group has made a substantial breakthrough recently. For the first time, more than 5 furnaces of continuous casting have been realized and mass production has been realized. theoretical and practical support.
The physical properties of steel after adding rare earth can be greatly improved, and the plasticity, toughness, wear resistance and corrosion resistance of steel can be improved.
Since the end of 2018, SGJT Iron and Steel Technology Research Institute and China Rare Earth Technology Research Institute have undertaken a provincial major scientific and technological project – the key technology research and industrialization project of high-quality rare earth special steel for high-end manufacturing equipment, and jointly develop rare earth steel technology research and development. The largest rare earth special steel technology research project with the strongest technical strength.
Focusing on the "technical bottleneck" in the steel smelting process after adding rare earth, the joint R&D team established a special steel clean steel production technology platform and promoted it to 2 production lines and 4 products. After 28 batches of rare earth steel industrial trial production, 290 heat data By comparison, problems such as nozzle blockage affecting production have been improved, and 4 key common technologies of rare earth steel, such as clean steel platform, carbide control, inclusion control, and pulse treatment, have made obvious progress. 15 patents and more than 10 technical secrets have been obtained. Participated in 2 It has established a group standard and a national standard, and has cultivated a group of skilled scientific research teams and scientific and technological talents.
The products have been identified by the Provincial Metallurgical Industry Corporation. The three technologies of the bearing steel clean production platform, the inclusion characterization and control technology platform, and the pulse external field to solve the nozzle blockage have reached the international advanced level, and the high carbon steel carbide uniformity control technology has reached the domestic level. leading level.
Driven by the rare earth steel project, the quality of SGJT bearing steel has been continuously improved and upgraded. It has jointly trial-produced high-quality bearings with domestic enterprises, developed high-temperature and heavy-duty bearings with China's "single champion" bearing enterprises to replace imports, and cooperated with JS bearing advanced enterprises to open special forklift bearings. High-end customized research and development.