The development of the high strength steel strip packing

The development of the high strength steel strip packing at present the main use of packaging materials mainly for Q345 steel belt, the strength is not high, the main use and the low-grade products packaging, can not adapt to the requirement of packing belt followed PZH steel annealing, to improve the quality of steel finished product packaging, mainly use the reinforcement mechanism of the new steel grade. Improve the strength of the most economic way is to improve the carbon content to increase the content of pearlite, when carbon content is more than 0. 35 RMB, pearlite content become very serious, the side effects of a sharp drop in ductility. In low carbon steel in order to obtain high strength and at the same time maintain a high level of comprehensive performance, the most economical method is application of microalloy technology, this kind of newly developed high strength packaging the essence of the steel strip is the new development of niobium, vanadium microalloyed dedicated, add a small amount of niobium in steel, so that is the strength of the low carbon can be further improved, after temperature control, control plunge into full play of niobium microalloy element solid solution strengthening effect, improve the comprehensive performance of steel, and then adopt the method of low temperature annealing process to produce high strength products.