Alloy Indefinite Chill Rolls
Alloy Indefinite Chill rolls consist of cast iron with fine interdendritic graphite evenly dispersed throughout the barrel of the roll. The size, shape and distribution of the graphite together with carbide content is controlled by the chilling effect and the alloy content. The addition of alloys such as manganese, nickel, chromium and molybdenum changes the matrix structure from pearlitic, bainite, to martensitic. Presence of these alloys produces rolls with restricted hardness dropped along the cross sections.
Application
It can be used in intermediate and finishing stands for bar, sections and wire rod mills.
Chemical Composition
| Hardness Shore C | C | Mn | Si | Cr | Ni | Mo | S | P | UTS Kgf/mm. Sq. |
|---|---|---|---|---|---|---|---|---|---|
| 65-70 | 3.00 3.30 |
0.60 0.90 |
0.90 1.20 |
0.80 1.10 |
1.60 2.00 |
0.25 0.40 |
0.06 Max. |
0.15 Max. |
35-45 (Normal Chilled) |
| 70-75 | 3.10 3.50 |
0.60 0.90 |
0.90 1.20 |
0.80 1.10 |
2.00 2.50 |
0.25 0.40 |
0.06 Max. |
0.15 Max. |
35-45 (Special Chilled) |
