Roll manufacturers to talk about the development of domestic roll footprints

With the increasing use of rolls in industry, rolls are gradually entering the public view. Today, let the roll manufacturer Wuxi Taihu roll Xiaobian bring you a simple explanation of the footprints of domestic roll development.

China has produced casting rolls in batches since the 1930s, but there are few kinds. In the late 1950s, China's professional roll factory was established in Xingtai, Hebei Province, and the first batch of roll manufacturers appeared. In 1958, Anshan Iron and steel company began to trial produce and use 1050 large ductile iron rolls for blooming in the world. In the 1960s, the cold rolling operation roll and large forged steel roll were successively manufactured.

In the late 1970s, Taiyuan Iron and steel company and Beijing Iron and Steel Research Institute jointly successfully trial produced centrifugal cast iron rolls for Steckel mill and hot continuous rolling wide strip mill, and Xingtai metallurgical machinery roll Co., Ltd. successfully trial produced semi steel work rolls for hot wide strip mill and work rolls for cold rolling wide strip mill.

In the 1980s, China successively developed new types of Large Forged Steel Backup Roll, cast semi steel and cast white cast iron roll, powder tungsten carbide roll ring, high chromium cast iron roll and so on. By the 1990s, China's roll production has been fundamentally satisfied with domestic needs and some have been exported, but the types need to be added and the quality needs to be improved.

Since its appearance in Japan in 1988, it has been widely used in hot rolling roughing mill, hot strip finishing mill, cold strip mill, steel pipe mill, section mill and rod and wire mill. The metallographic arrangement of a typical high-speed steel roll is composed of martensite (or bainite) matrix, high hardness MC, M2C, M6C, M7C3 and other types of carbides. There are also reports on the research and application of high-speed steel rolls in China. The general iron and Steel Research Institute took the lead in developing high-speed steel rolls in China and has achieved outstanding application in hot-rolled narrow strip mills and bar mills. Beijing Metallurgical Equipment Research Institute, Xi'an Jiaotong University, Henan University of science and technology, Xingtai roll factory and WISCO roll factory also conducted in-depth research on the preparation skills of high-speed steel roll. The successfully developed high-speed steel roll has been used in high-speed wire rod mill and bar mill., The setting process, heat treatment process, mechanical function and wear resistance of high carbon high speed steel for roll have also been deeply studied in China. In order to improve the setting arrangement of high-speed steel roll and advance its mechanical function, the modification treatment method of high-speed steel roll is also discussed in China, which significantly improves the arrangement and function of high-speed steel roll.

OK, the above is the brief introduction of the roll manufacturer on the development footprints of domestic rolls. If you want to know more about roll products and roll manufacturers, please pay attention to the roll manufacturer Wuxi Taihu roll Xiaobian.