Forged Back up rolls
Forged steel back-up roll is mainly used in 4 Hi and 6 Hi mills.The diameter of roll barrel can be 350mm – 1600mm. The materials of back-up include 9Cr2Mo, 86CrMoV7, 70Cr3Mo and 45Cr5NiMoV.
Hardness Curve of Back up Roll
|Symbol||Type of material||Application|
|70Cr3Mo||3%Cr||Cold Rolling Mills|
|45Cr4NiMoV||4%Cr||Cold Rolling Mills|
|YB-70||5%Cr||Hot & cold rolling mills|
Other dimensions or materials requirements can be produced under customers requirements.