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The composite rolls manufactured by the continuous pouring process for cladding using a high-speed tool steel type shell material and a steel core exhibit extremely high wear resistance, surface roughening resistance and toughness in the finishing rolling train of hot strip mills and have been widely applied. The authors focused on the fact that the core material of this type roll can be welded. Therefore, using this cladding process and welding technology, we developed a recycling system for a new roll using a scraped-out roll of this type. This technology realized high-performance rolls at a low cost and established a recycling system for work rolls reading to a reduction of CO2 emissions. These new rolls are friendly and contribute to meeting social demands in ecology. [doi:10.2320/matertrans.F-M2019808]

Reproduction of Hot Rolling Mill Roll with High-Speed Tool Steel Type Shell Material Manufactured by Continuous Pouring Process for Cladding