Development of high-strength packaging steel strip

Development of high-strength packaging steel strip
At present, the main material of packaging steel belt is mainly Q345, which is not high in strength. It is mainly used for packaging of medium and low-grade products. It cannot meet the requirements of packaging belts followed by steel annealing. In order to improve the packaging quality of steel products, Mainly use the strengthening mechanism of the new steel grade.
The most economical way to increase the strength is to increase the carbon content to increase the pearlite content. When the carbon content exceeds 0.35 ¥, the side effects of the pearlite content become very serious and the ductility drops sharply.
In order to obtain high strength and maintain a high level of comprehensive performance in low carbon steel, the most economical way is to apply microalloy technology. The essence of this newly developed high-strength packaging steel strip is to use newly developed niobium. A special kind of vanadium microalloying. A small amount of niobium is added to the steel to further improve the strength of low carbon. After temperature control and control, the solid solution strengthening effect of the niobium microalloying element is fully exerted and the comprehensive performance of the steel , And then use the low-temperature annealing process to produce high-strength products.