Pearlitic
Nodular Cast
Iron Rolls
Pearlitic and Pearlitic / Sorbitic Nodular Iron are nodular grades alloyed with Cr, Ni, and Mo with Ni ranging between 1.50% in the softer grades and 4% in the harder grades. The right balance of Si and Cr will help to develop the adequate hardness level.
The rolls can be cast static or spun cast depending of the size of the working layer and the mill conditions.
Application
- Roughing stands of bar, wire rod and medium section mills
- Intermediate stands of bar mills
- Sleeves of Universal stands
| MATERIAL | CHEMISTRY |
BARREL HARDNESS (HSC) |
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| C | Si | Mn | Cr | Ni | Mo | |||
| Pearlite (SGP) |
Pearlite I | 2.90-3.60 | 1.40-2.20 | 0.40-1.00 | 0.10-0.60 | 1.50-2.00 | 0.20-0.80 | 45-55 |
| Pearlite II | 2.90-3.60 | 1.20-2.00 | 0.40-1.00 | 0.20-1.00 | 2.01-2.50 | 0.20-0.80 | 55-65 | |
| Pearlite III | 2.90-3.60 | 1.00-2.00 | 0.40-1.00 | 0.20-1.00 | 2.51-3.00 | 0.20-0.80 | 62-72 | |
| TYPICAL PHYSICAL PROPERTIES |
|||
| Neck Hardness (HSC) | Tensile Strength (N/mm2) |
Unevenness of Barrel Surface Hardness (HSC) |
|
| 35-55 | ≥350 | ＜5 | |
Hardness Distribution
Microstructure
