Serialization of cast iron roll raw materials and continuous reduction of roll consumption

After years of research and exploration, the domestic cast iron roll has developed from the conventional raw materials such as chilled cast iron, infinite chilled cast iron and chilled nodular cast iron in the past to the new roll raw materials such as Pearlite Nodular Cast Iron, acicular nodular cast iron, high nickel chromium infinite chilled cast iron and high chromium cast iron. Next, Wuxi Taihu roll editor will bring you an explanation of the raw materials of domestic cast iron rolls.

In order to meet the needs of different rolling mills, the functions of various raw material rolls are also continuously refined and optimized, such as high nickel chromium infinite cold roll suitable for wide and heavy plate rolling mill, Steckel rolling mill and hot strip rolling mill, rough rolling of hot strip rolling mill, high chromium cast iron working roll in the front section of finish rolling, high chromium iron working roll for wide and heavy plate rolling mill and high chromium iron working roll for flat rolling mill, which all show the advantages of new materials. With the optimization of different raw material roll types, the product functions are also being carried out to a higher level.

According to different types of rolling mills and application environments, China's roll manufacturing enterprises have formed a series of roll raw materials through independent development and skill introduction, which is close to the foreign advanced level in terms of high alloy raw materials, while the different raw materials used in plate and strip hot rolling mill are basically in line with the foreign advanced level. For example, the vertical roll of hot rolled strip used for side pressure rolling and the combined vertical roll of centrifugal high chromium steel are rolled on Baosteel 1580 rolling line, and the application effect is twice that of alloy semi steel raw materials. The two roll reversible coarse roll at the front end of the rolling line of the wide and thick plate and the hot strip mill has a long contact time with the high-temperature billet, and because there is no backup roll and accepts large bending moment and torque, it is necessary to have high thermal crack resistance, bite in resistance and strength. According to the application conditions, the roll can be divided into forged steel hot roll and forged steel cold roll. Forged steel hot roll is mainly used for hot rolling billet and section steel coarse roll, and forged steel cold roll is widely used for cold roll. In view of these characteristics, in recent years, the rough roll of tool steel raw materials for integral casting and composite casting developed by domestic roll enterprises has doubled the product application function. The successful research and announcement of forged steel semi high speed steel and high speed steel roll for cold rolled strip by enterprises represented by Xingji of Sinosteel also marks that the manufacturing level of forged steel cold roll in China has reached the advanced level at home and abroad. With the continuous introduction of new raw material rolls and the continuous addition of modern rolling mills, the average roll consumption per ton of steel continues to decline. With the advancement of technology in the iron and steel industry and the in-depth discussion and application of new roll materials in the roll manufacturing industry, the roll consumption will further decline in the future.

OK, the above is the introduction of the raw materials of cast iron rolls in China. If you want to know more about cast iron roll, please pay attention to Wuxi Taihu roll Xiaobian.