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Pearlitic Nodular Cast Iron Rolls (SGP)
Pearlitic nodular rolls are obtained by adding alloy elements of Ni,Cr,Mo into the nodular cast iron and following special heat treatment. Pearlitic nodular rolls have high strength, good thermal properties and resistance to emergencies as well as small hardness gradient of working layer.
Table.1 Chemical Composition%
| Symbol | C | Si | Mn | Cr | Ni | Mo | Mg |
| SGPⅠ | 2.90-3.60 | 1.40-2.20 | 0.40-1.00 | 0.10-0.60 | 1.50-2.00 | 0.20-0.80 | ≥0.04 |
| SGPⅡ | 2.90-3.60 | 1.20-2.00 | 0.40-1.00 | 0.20-1.00 | 2.01-2.50 | 0.20-0.80 | ≥0.04 |
| SGPⅢ | 2.90-3.60 | 1.00-2.00 | 0.40-1.00 | 0.20-1.20 | 2.51-3.00 | 0.20-0.80 | ≥0.04 |
Table.2 Prosperities & Application
| Symbol | Hardness HS |
Tensile Strength MPa |
Dimension MM |
Unit N.W KGS |
Application |
| SGPⅠ | 45-60 | ≥450 | ￠300-1350 | 500-35000 | Rolls for blooming mills, roughing and intermediate stands of bar, wire and section mills. |
| SGPⅡ | 55-65 | ≥450 | |||
| SGPⅢ | 62-72 | ≥450 |
