| 简介 |
PROBLEM TO BE SOLVED : To provide an outer layer material of a roll for rolling superior in abrasion resistance, surface roughening resistance and accident resistance, and to provide the roll for rolling using it.
SOLUTION : The outer layer material of the roll for rolling has a chemical composition comprising, by mass%, 2.5-3.0% C, 3.0% or less Si, 2.3-5.5% Ni, 0.1-2.0% Cr, 0.3-10.0% V, 0.005-0.500% rare earth element (REM) and the balance Fe with impurity elements; and has a metallographic structure containing, by area%, 0.5-5.0% graphite. |
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