The first successful production of high strength weathering steel

Recently, Tangshan Iron and Steel Group company's first high-strength weathering steel Q450NQR successful trial in the 1810 line.

Upon examination, the product surface quality, dimensional and mechanical properties of well-controlled, the indicators are in line with relevant standards, marking the Tangshan Iron and Steel Group, the company added a new member.

High strength weathering steel, high strength, lower plasticity, high low temperature impact properties, mainly for railways, bridges, towers and other long-term exposure to the atmosphere of the steel.

The production of high-strength weathering steel in weathering steel production, based on adding a small amount of chromium, niobium, titanium and other alloy elements made ​​with considerable quality control difficult.

Collaborative Production Plant Technology Center technical staff developed a detailed production rules, combined with weathering steel production experience, the right way to optimize mold cooling, on the converter end of the carbon and other key points to focus on process requirements, meanwhile, set parameters for rolling , and the entire production process tracking, to ensure the production of a success.

In addition, in order to reduce production costs, the production of nickel content decreased by half, about 60 yuan per ton cost reduction, cost reduction and efficiency for the steel foundation.