1) Forged work roll and intermediate rolls for cold rolling mill
|
Material |
C |
Mn |
Cr |
Mo |
V |
Ni |
|
86CrMoV7 |
0.82-0.88 |
0.32-0.50 |
1.50-2.20 |
0.20-1.0 |
0.10-0.40 |
≤0.60 |
|
9Cr2Mo |
0.85-0.95 |
0.20-0.60 |
1.50-2.50 |
0.20-1.0 |
- |
≤0.60 |
|
3%Cr |
0.75-0.95 |
0.20-0.60 |
2.50-3.50 |
0.20-1.0 |
- |
≤0.60 |
|
3%CrA |
0.70-0.90 |
0.30-0.80 |
2.50-3.50 |
0.40-1.0 |
0.10-0.40 |
0.60-1.0 |
|
5%Cr |
0.70-0.90 |
0.20-0.50 |
4.50-5.50 |
0.20-1.0 |
0.10-0.40 |
0.60-1.0 |
2) Forged Back-up roll of cold and hot strip mills
|
Material |
C |
Mn |
Cr |
Mo |
V |
Ni |
|
3%Cr |
0.40-0.70 |
0.40-0.80 |
2.80-3.20 |
0.20-0.40 |
0.10-0.20 |
0.25-0.60 |
|
5%Cr |
0.40-0.70 |
0.40-0.80 |
5.00-5.40 |
0.30-0.50 |
0.10-0.20 |
0.25-0.60 |
Typical Mechanical Properties
|
Type of cold rolls |
Tensile strength |
Depth of hardness |
Hardness of neck |
Hardness of Barrel |
|
Cr2 Series |
≥800 |
12-18 |
40-55 |
Work roll:90-98 Intermediate roll:80-90 Back-up roll:55-75 Temper roll:95-100 |
|
Cr3 Series |
≥900 |
20-28 |
40-55 |
|
|
Cr5 Series |
≥1000 |
25-40 |
40-55 |
The scope of supply
|
Type of cold rolls |
Material |
Body length |
Body Diameter |
Overall length |
|
Cold-rolling work rolls |
Cr2, Cr3, Cr5 |
≤2500 |
≤800 |
≤5000 |
|
Cold-rolling intermediate rolls |
Cr2, Cr3, Cr5 |
≤2500 |
≤1000 |
≤5000 |
|
Cold-rolling back-up rolls |
Cr3, Cr5 |
≤2800 |
≤1800 |
≤8000 |
|
Cold-rolling temper rolls |
Cr2, Cr3, Cr5 |
≤2500 |
≤800 |
≤8000 |