Steel Rolls
Forged Steel: Hardened forged steel rolls manufactured for the cold rolling of steel and non-ferrous metals are of high carbon CR-Steel. Additionally, as the case may be, other alloying elements are added to enhance a specific property for better roll performance. The most common alloying elements are Ni, Cr, Mo, and V. The selection of a roll material depends mainly on the properties demanded by the rolling process, such as the following: hardness, hardness penetration, structure, crack- resisting properties, roughness, wear resistance, etc.
| Chemical Composition of Forged Steel Work Rolls |
Grade / Hardness |
C |
Si |
Mn |
Ni |
Cr |
Mo |
CW3 |
0.070 |
0.030 |
0.030 |
<0.500 |
2.000 |
0.020 |
CW3 |
1.000 |
0.080 |
0.080 |
<0.500 |
3.000 |
0.050 |
|
Characteristics: |
Conventional Characteristics
|
Grade / Hardness |
C |
Si |
Mn |
Ni |
Cr |
Mo |
CW4 |
0.070 |
0.030 |
0.030 |
<0.500 |
3.000 |
0.020 |
CW4 |
1.000 |
0.080 |
0.080 |
<0.500 |
4.000 |
0.050 |
|
Characteristics: |
Deep Hardness Penetration
|
Grade / Hardness |
C |
Si |
Mn |
Ni |
Cr |
Mo |
CW5 |
0.070 |
0.030 |
0.030 |
<0.500 |
4.000 |
0.020 |
CW5 |
1.000 |
0.080 |
0.080 |
<0.500 |
6.000 |
0.050 |
|
Characteristics: |
Deep Hardness Penetration and Enchanced Wear Resistance |
| Chemical Composition of Back Up Forged Rolls |
Grade / Hardness |
C |
Si |
Mn |
Ni |
Cr |
Mo |
CB3 |
0.040 |
0.030 |
0.050 |
0.50 Max |
2.500 |
0.050 |
CB3 |
0.060 |
0.050 |
0.080 |
0.50 Max |
3.500 |
0.080 |
|
Characteristics: |
Differential Hardening |
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