DURON’s Indefinite Chilled Double Poured rolls (internationally designated as ICDP Rolls) are precision-engineered metallurgical solutions developed for the late finishing stands of modern hot strip mills and sheet rolling operations. Manufactured through advanced horizontal spin casting, these heavy-duty ICDP Rolls bond an ultra-hard, alloy-rich outer shell seamlessly to a highly shock-absorbing ductile iron core.
By meticulously stabilizing the microstructural distribution of eutectic carbides and free graphite flakes within a tempered bainitic matrix, our premium Indefinite Chilled Double Poured iron rolls offer magnificent protection against thermal fatigue, heat-cracking, and mechanical spalling. Implementing DURON’s high-alloy ICDP Rolls inside your mill train effectively curtails unexpected downtime and ensures a flawless, high-precision surface finish for flat steel components.
### Chemical Composition & Physical Properties Engineered for exceptional wear resistance and thermal stability, DURON’s Indefinite Chilled Double Poured Rolls (ICDP Rolls) utilize a precisely alloyed Nickel-Chromium-Molybdenum (Ni-Cr-Mo) matrix. We carefully balance carbide-forming elements (Chromium, Molybdenum) with graphitizing dynamics to control the chill depth and graphite morphology. | Grade (材质代号) | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Hardness (HSD) | Tensile (N/mm²) | | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | :— | | **ICDP – Standard** | 3.00-3.60 | 0.80-1.20 | 0.60-1.30 | ≤ 0.10 | ≤ 0.05 | 1.30-2.00 | 4.00-4.90 | 0.20-0.50 | **70-83** | ≥ 410 | | **ICDP – Enhanced** | 3.20-3.60 | 0.70-1.50 | 1.00-1.70 | ≤ 0.08 | ≤ 0.05 | 4.00-6.00 | 1.50-3.00 | 0.20-3.00 | **75-85** | ≥ 410 | *Note: For the Enhanced Grade, special micro-alloying elements such as V (Vanadium) and Nb (Niobium) are added up to 1.0% to 3.0% to form highly dispersed, ultra-hard carbides (ICDP-EC technology) for severe hot rolling environments.*
