Advantages of Controlled Rolling for HP235 steel

Controlled rolling is an important means to improve the strength and toughness of HP235 steel. It is widely used in industrial production because it has the following advantages:

1.Replacing conventional rolling and saving energy, it can directly produce special plates with excellent comprehensive performance;
2. Effectively improve the strength and toughness of HP235 steel plates;
3. Compared with normalized steel of the same strength level, it can reduce the alloy content of HP235 steel and the carbon equivalent, and improve the welding performance;
4. Controlled rolling can simplify the traditional production process, reduce the consumption of manpower and material resources, reduce production costs and improve the competitiveness of HP235 steel;
5.The final rolling temperature of HP235 steel plate can be appropriately increased while maintaining the same performance, or speed up the cooling of the intermediate billetor by the cooling process between rolling passes and stands, so as to reduce the waiting time and improve production efficiency. Therefore, the output can be increased on the basis of controlled rolling;
6. Improve the metallographic structure of HP235 steel, such as eliminating banding and reducing lamellar tearing;
7. Improve the effective thickness of HP235 steel plate, Utilizing difference in hardenability, the different grain sizes of the inner and outer layers of the board to produce thickness with uniform cross-sectional performance.