FORGED STEEL ROLL MANUFACTURING METHOD

摘要

This forged steel roll manufacturing method involves casting, with the ESR method, steel ingots which contain (in a mass%) C:0.3% or more, Si:0.2% or more, Cr:2.0-13.0% and Mo:0.2% or more, and further contain Bi at 10-100 ppm by mass, and forging the steel ingots and manufacturing rolls. By this means, because freckle defects can be sealed near the center of the steel ingots, the rolls can be stably used over a long time.