Brief history of roll development by roll manufacturers

The types and manufacturing processes of rolls are constantly developed with the advancement of metallurgical skills and the evolution of steel rolling equipment and roll production plants. Today, let the roll manufacturer Wuxi Taihu roll editor bring you a brief explanation of the roll development history.

Gray cast iron rolls with low strength were used in rolling soft non-ferrous metals in the middle ages. In the mid-18th century, Britain mastered the production skills of chilled cast iron rolls for rolling steel plates. In the second half of the 19th century, the advancement of steelmaking skills in Europe required the rolling of larger tonnage steel ingots. The strength of both gray cast iron and chilled cast iron rolls could not meet the requirements. General cast steel rolls with carbon content of 0.4% ~ 0.6% were born accordingly. The appearance of heavy forging equipment further improves the strength and toughness of the cast roll with this composition. The application of alloying elements and the introduction of heat treatment in the early 20th century significantly improved the wear resistance and strength and toughness of cast and forged steel hot and cold rolls. After adding molybdenum into the cast iron roll for hot rolling plate and strip, the surface quality of rolled products is improved. The core strength of casting roll is obviously improved by compound pouring with flushing method.

The extensive use of alloy elements in rolls is the result of higher requirements for roll function after the Second World War, which is the development of steel rolling equipment towards large-scale, continuous, high-speed and automation, as well as the improvement of rolling strength and deformation resistance. During this period, semi steel rolls and nodular cast iron rolls were successively presented. After the 1960s, powder tungsten carbide roll was successfully developed. In the early 1970s, the centrifugal casting skills and differential temperature heat treatment skills of rolls were widely implemented in Japan and Europe, which significantly improved the comprehensive functions of plate and strip rolls. Composite high chromium cast iron rolls have also been successfully used in hot strip mills. In the same period, cast white iron and semi steel rolls were used in Japan. In the 1980s, Europe launched high chromium steel rolls and cold rolls with ultra deep hardening layer, as well as special alloy cast iron rolls for small section steel and wire rod finishing rolling. The development of contemporary steel rolling skills promotes the development and research of higher function rolls. Centrifugal casting and new composite methods, such as continuous casting composite method (CPC method), eruption deposition method (Osprey method), electroslag welding method and hot isostatic pressing method, have been used in the new generation of profile, wire rod and strip mills in Europe and Japan.

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