On December 14, 2017, the 2000 MPa ultra-high strength and toughness hot stamping steel produced by LNBG Special Steel Group for BJQC New Energy Automobile Company was successfully rolled off the line. This is the tensile strength of the ultra-high-strength steel products invested globally Mass production and application.
LNBG relies on R & D platforms such as technology centers, inspection centers, academician expert workstations and other domestic and foreign scientific research units to jointly build a scientific and technological innovation platform. It has successfully developed 780 MPa and 980 MPa cold-rolled and galvanized products, and 1500 MPa heat Press forming steel, forming a stable mass production and supply capacity.
Focusing on the future development direction of the industry chain, LNBG has set its sights on the development and production of ultra-high-strength steel at a higher level, and has signed a cooperation agreement with Northeastern University to carry out relevant research on 1800MPa and 2000MPa hot-formed steel, and successfully developed a new generation 2000MPa grade hot forming steel that can truly meet the requirements of industrial use. The steel grade was tested by the General Institute of Chinese Academy of Sciences and users on site. The tensile strength reached 2000 MPa, the elongation rate reached more than 7%, and the three-point bending angle reached 60 degrees. .
In the R & D and production process of 2000 MPa class ultra-high strength and toughness hot stamping forming steel, LNBG solved the requirements of steel strength, alloy composition and other indicators beyond the equipment capacity by digging out its own equipment capabilities and secondary optimization of alloy composition A series of production and process problems have emerged, and unique technological parameters have been designed to provide a powerful guarantee for the research and development and production of 2000 MPa grade hot-formed steel. In addition, LNBG participated in and completed the drafting and release of the national standard for hot-formed steel, and actively participated in the actual production of customers, working closely with customers to complete the determination of the hot stamping process window, providing customers with tailor-made hot stamping materials according to actual conditions. Platform.
It is reported that compared with the 1500 MPa grade steel grades commonly used at that time, the 2000 MPa hot stamped steel can achieve a 10% to 15% weight reduction of parts, greatly reducing the production costs of automobile companies. After the 2000MPa grade ultra-high-strength steel produced by Benxi Steel is put into mass production and application in the world, it has passed the certification of many manufacturers and is widely praised.