Brief industrion
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, 9Cr2Mo, 86CrMoV7, 70Cr3Mo, 5Cr5NiMoV etc.
Application
• Roughing stands of various Mills.
• Section Mill.
Material Spec
Name Type of material Hardness
Back-up roll 2%Cr,3%Cr,4%Cr,5%Cr 60~80HSD
Depth of hardness Hardness deviation
20~100mm 2-3HSD
