Baosteel successfully developed ultra-high strength hot rolling engineering machinery steel

In the future, large-tonnage cranes and pump trucks will be “heavy”, and there is no need to worry about “arm strength”. At present, only a few international advanced steel companies can produce 960 MPa high-strength hot-rolled construction machinery steel, which was successfully developed in Baosteel recently, filling the domestic gap.

At present, the construction machinery industry at home and abroad generally uses the high-strength engineering machinery steel with a yield strength of 960 MPa to manufacture the boom of large-tonnage equipment to improve the stability and lifting performance of the components. In recent years, domestic demand for 960 MPa high-strength construction machinery steel has increased year by year, and is expected to reach 800,000 to 100,000 tons this year. Since this is the highest strength grade of similar products to date, it has long relied on imports in China.

Over the years, Baosteel has taken the lead in developing high-strength engineering machinery steel with the highest yield strength of 700 MPa, relying on the advantages of production, sales and research technology, and has achieved stable supply to the downstream industry. On this basis, in line with the principle of enhancing product competitiveness and maximizing benefits, Baosteel's hot rolling production and sales research team closely tracked the development trend of the construction machinery industry, combined with the use trend of 960 MPa materials and domestic market demand, launched product development last year. jobs. Based on independent innovation, the team members repeatedly explored the composition process, and opened the equipment bottleneck within six months. The product trial production was successful.

At present, the “leading” of the domestic construction machinery industry – Xugong Group believes that the performance and quality of this product are stable and can be used as an alternative to imports.

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