back up roll
1) Raw material: 9Cr2Mo,86CrMoV7,MC3,MC5.
2) Standard: ASTM,JIS,DIN,EN
3) O.D.: 200mm-2000mm
ISO9001-2000
Technology parameter of cold rolling and forged steel
A,Max Diameter of roll body is 2000mm
B,Materials: 86CrMoV7,9Cr2Mo,9Cr2W, MC3(3%Cr),MC5(5%Cr) of GB/T13314-97, Semi- High Speed Steel etc..
C,Work hardness
Surface hardness of work roll body (HSD)
Order No. | Surface hardness of roll body | Usage |
1 | Min.95 | Skin rolling machine base, working roll of finish rolling machine base |
2 | 90-96 | Metal plate, cold rolling work roll of strips |
3 | 75-90 | Metal plate, rough rolling work roll of strips |
Surface hardness of work roll neck (HSD)
Order Number | surface hardness of roll neck |
1 | 30-50 |
2 | 50-65 |
3 | 75-90 |
Reasonable Soft width of two sides of roll body (MM)
Length of roll body | 300 | 301-600 | 601-1000 | 1001-2000 | Min.2000 |
Reasonable Soft width of each side of roll body (Max.) | 30 | 50 | 60 | 65 | 80 |
D,Effective hardening depth of work rolls
d-1,Classifications according to diameter of roll body
order | diameter of roll body (mm) | hardness of roll body surface (HSD) | Effective hardening depth (Min.mm ) |
1
| Max.300 | Min.95 | 6 |
90-96 | 8 | ||
75-90 | 10 | ||
2
| 301-500 | Min.95 | 7 |
90-96 | 12 | ||
75-90 | 14 | ||
3 | Min.500 | Min.95 | 8 |
90-96 | 13 | ||
75-90 | 15 |
d-2,Classifications according to materials
Order number | Material | Depth of Hardness (mm) |
1 | Series-2%Cr | 12-18 |
2 | Series MC3-3%Cr | 18-35 |
3 | Series MC5-5%Cr | 20-40 |
