We produce double poured indefinite chilled rolls by centrifugal casting. It is an innovate casting method. With this casting roll remain free from Pin holes and cracks. The surface of these roll give uniform hardness and deep hardness, which is indispensable for the high quality chilled rolls. The endeavour to obtain rolls with high wear and tear resistance and toughness resulted in the development of Double Poured Chilled Rolls. Such rolls are basically composite rolls having very hard shell and sufficiently tough core.
HARDNESS | C | MN | SI | S | P | NI | CR | MO |
65-70 | 3.00-3.20 | 0.60-0.80 | 1.20-1.50 | 0.015 MAX | 0.10 MAX | 1.20-1.80 | 0.70-1.40 | 0.230-0.280 |
70-75 | 3.00-3.40 | 0.60-0.90 | 1.00-1.40 | 0.015 MAX | 0.10 MAX | 1.50-2.50 | 0.80-1.50 | 0.250-0.340 |
75-80 | 3.20-3.80 | 0.60-1.20 | 0.80-1.20 | 0.015 MAX | 0.10 MAX | 2.50-3.00 | 1.00-2.00 | 0.280-0.370 |