Kaida Roll Group [China]

Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1800mm. The material of back-up roll includes 60CrMo,Website:http://www.kdroll.com, 9Cr2Mo, 86CrMoV7, 70Cr3Mo, 5Cr5NiMoV etc.NameType of materialHardnessDepth of hardnessHardness deviationBack-up roll2%Cr,3%Cr,4%Cr,5%Cr60~80HSD20~100mm2-3HSDHardness Curve