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Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll barrel is 350~1400mm. The material of back-up roll includes 60CrMo, 9Cr2Mo, 86CrMoV7, 70Cr3Mo etc.
The main types of mills: back-up roll of 650mm Mill, 900mm Mill, 1050mm Mill, 1250mm Mill, 1450mm Mill.
BIEC BACKUP ROLLS ARE USED IN 4 HI and 6 HI REVERSING AND TANDEM MILLS FOR ALL PRODUCT ROLLING SUCH AS STEEL , STAINLESS , ALUMINUM,BRASS , COPPER UPTO SINGLE PC WEIGHING 32000 KGS
| Name | Type of material |
Hardness |
Hardness deviation |
| Backup Roll | 2%Cr, 3%Cr, 4%Cr, 5%Cr | 60-80 HSD | 2-3 HSD |