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Forged steel backup roller is the core component of modern rolling equipment, mainly bear the work roll or intermediate roll rolling load. Product specifications, technical content is high, its performance directly determines the stability, rolling mill production line operation and the quality of the products.

At present, the main production process of forged steel backup roll, the final heat treatment refers to the heat treatment of surface quenching + tempering on the roller body parts, it is the key process of supporting roller working layer, hardness distribution, stress distribution and the use of performance, but also the core of the manufacturing technology of supporting roller. Therefore, the domestic and international research on the forging steel supporting roller and the final heat treatment technology is paid a lot of attention.

The final heat treatment technology of forging steel supporting roller are mainly in the following 4 processes: trolley furnace or well furnace does not burn through heating quenching technology, continuous induction hardening technology, the temperature differential heating quenching and static low-frequency integral induction heating quenching technology. These 4 kinds of methods according to different products and different users in the use of, the differential temperature furnace heating and quenching technology in China and the most widely used, and the most advanced static low-frequency integral induction heating quenching technology is currently in the country has not been reported, the world only a few enterprises in the use of japan. But the technology used in the production of forged steel backup roll products in Baosteel mill use good performance.