Double poured indefinite chilled cast iron roll
Properties
The shell has a remarkable mechanical performance. With virtually no fall off in hardness due to the quantity of graphite remains basically unchanged throughout the working layer. The hardness of roll depends mainly on the type of matrix, namely sorbite or martensite.
Chemical Analysis
| Designation of rolls |
C |
Si |
Mn |
P |
S |
Ni |
Cr |
Mo |
V |
W |
Nb |
| CrMo indefinite chilled cast iron rolls |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
≤0.2 |
≤0.1 |
|
0.6/1.2 |
0.2/0.6 |
|
|
|
| NiCrMo indefinite chilled cast iron rolls (ICDPI) |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
≤0.2 |
≤0.1 |
0.5/1.0 |
0.7/1.2 |
0.2/0.6 |
|
|
|
| NiCrMo indefinite chilled cast iron rolls (ICDPII) |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
≤0.2 |
≤0.1 |
1.0/2.0 |
0.7/1.2 |
0.2/0.6 |
|
|
|
| NiCrMo indefinite chilled cast iron rolls (ICDPIII) |
2.9/3.6 |
0.6/1.2 |
0.4/1.2 |
≤0.2 |
≤0.1 |
2.0/3.0 |
0.7/1.2 |
0.2/1.0 |
|
|
|
| NiCrMo indefinite chilled cast iron rolls (ICDPIV) |
2.9/3.6 |
0.6/1.5 |
0.4/1.2 |
≤0.1 |
≤0.05 |
3.0/4.8 |
1.0/2.0 |
0.2/1.0 |
|
|
|
| NiCrMo indefinite chilled cast iron rolls (ICDPV) |
2.9/3.6 |
0.6/1.5 |
0.4/1.2 |
≤0.1 |
≤0.05 |
3.0/4.8 |
1.0/2.0 |
0.2/2.0 |
0.2/2.0 |
0/2.0 |
0/2.0 |
Physical Properties
| Designation of rolls |
Barrel hardness (HSD) |
Neck hardness (HSD) |
Tensile strength (MPa) |
| CrMo indefinite chilled cast iron rolls |
55~70 |
35~55 |
>160 |
| NiCrMo indefinite chilled cast iron rolls (ICDPI) |
60~72 |
35~55 |
>160 |
| NiCrMo indefinite chilled cast iron rolls (ICDPII) |
62~72 |
35~55 |
>160 |
| NiCrMo indefinite chilled cast iron rolls (ICDPIII) |
65~75 |
35~55 |
>350 |
| NiCrMo indefinite chilled cast iron rolls (ICDPIV) |
70~83 |
35~55 |
>350 |
| NiCrMo indefinite chilled cast iron rolls (ICDPV) |
77~85 |
35~55 |
>350 |
Microstructure
| Designation of rolls |
Microstructure |
| CrMo indefinite chilled cast iron rolls |
Pearlite + cementite + small percentage graphite |
| NiCrMo indefinite chilled cast iron rolls (ICDPI) |
Pearlite + cementite + small percentage graphite |
| NiCrMo indefinite chilled cast iron rolls (ICDPII) |
Fine pearlite + cementite + small percentage graphite |
| NiCrMo indefinite chilled cast iron rolls (ICDPIII) |
Sorbite + cementite + small percentage graphite |
| NiCrMo indefinite chilled cast iron rolls (ICDPIV) |
Sorbite + cementite + small percentage graphite |
| NiCrMo indefinite chilled cast iron rolls (ICDPV) |
Tempered martensite + small percentage bainite + cementite + small percentage graphite |
Application
| Designation of rolls |
Application |
| CrMo indefinite chilled cast iron rolls |
Section mill, bar mill, intermediate and finishing stands of wire-rod mill |
| NiCrMo indefinite chilled cast iron rolls (ICDPI) |
Section mill, bar mill, intermediate and finishing stands of wire-rod mill |
| NiCrMo indefinite chilled cast iron rolls (ICDPII) |
Section mill, bar mill, intermediate and finishing stands of wire-rod mill |
| NiCrMo indefinite chilled cast iron rolls (ICDPIII) |
Section mill, bar mill, intermediate and finishing stands of wire-rod mill, tube stretch reducing mill |
| NiCrMo indefinite chilled cast iron rolls (ICDPIV) |
Work roll for finishing stands of hot strip mill, Intermediate plate mill, tempered mill |
| NiCrMo indefinite chilled cast iron rolls (ICDPV) |
Work roll for finishing stands of hot strip mill, Intermediate plate mill, tempered mill |
Audited Supplier 
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