China Tangshan Iron and Steel's 2GPa super hydrogen embrittlement resistant hot-formed steel rolls off production line
Recently, the first domestic 2GPa super hydrogen embrittlement resistant hot-formed steel produced by Hesteel Group Tangshan Iron and Steel Company was successfully rolled off the production line. The steel has greatly improved its hydrogen embrittlement resistance and will be used in the manufacture of single and composite structural parts of passenger car body-in-white. While meeting the demand for lightweight vehicles, it will greatly improve the safety performance of vehicles.
It is understood that the hydrogen embrittlement phenomenon refers to the process of metal solidification, in which the hydrogen mixed in the metal aggregates into hydrogen molecules at the metal defects, generating huge internal pressure and causing cracks in the metal. If it is used in parts such as automobile anti-collision beams, it will affect the safety performance of the car. To solve this problem, Tangshan Iron and Steel innovated niobium microalloying technology, optimized the microstructure of steel, and greatly improved its hydrogen embrittlement resistance.
Tangshan Iron and Steel accelerates the innovation of key, common and cutting-edge technologies, targets the cutting-edge trends of industry development and market customer needs, promotes the research and development of high-end steel varieties, and achieves a new breakthrough in "steel to materials". During the production process of 2GPa super hydrogen embrittlement resistant hot-formed steel, Tangshan Iron and Steel's production technology team conducted research on the production process route, continuously experimented and improved key process links such as composition, hot rolling, coiling, and continuous annealing, strengthened production management and control of the entire process, strictly controlled process parameters, and ensured that all product performance standards were met stably.
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