High Chrome Cast Iron Roll (HCr)

Product Name: High Chrome Cast Iron Roll (HCr) Certification: ISO Type: Steel Rolling Equipment Condition: New Customized: Customized Casting Method: Centrifugal Cast Barrel Hardness: 65-95hsd Core Hardness: 32-45hsd Weight: 1-50tons Trademark: CAMET Transport Package: Steel Rack Specification: ISO Origin: China Product Description High chrome cast iron rollPropertiesThanks to its high content of M7C3 type carbide in the range of 20-30% and discontinuous network distribution of carbide, the roll offers a high wear-resistance performance. The matrix consist of tempered martensitic and sorbite with finely-dispersed secondary carbides (M7C3, M23C6 and M3C types), increasing therefore the wear-resistance of roll, the Cr2O3 enriched oxide film on the roll surfaces is highly resistant to oxidization and plastic strain, making the roll extremely suitable for steel hot rolling process.Chemical Analysis GradesHSCCSiMnNiCrMoHCrI60~752.3/3.30.3/1.00.5/1.20.7/1.712.0/15.00.7/1.5HCrII65~802.3/3.30.3/1.00.5/1.20.7/1.715.0/18.00.7/1.5HCrIII75~902.3/3.30.3/1.00.5/1.20.7/1.718.0/22.01.5/3.0Mechanical propertiespropertiesBarrelNick/corel - grey cast ironNick/corel - SG cast ironTensile strength (N/mm2)850200400Bending strength (N/mm2)1300350835MicrostructureHCrI: bainite + martensite + carbideHCrII: tempered martensite + eutectic carbide + small percentage secondary carbideHCrIII: tempered martensite + eutectic carbide + small percentage secondary carbideApplicationWork rolls for roughing stands and front finishing stands of hot strip mill, work rolls for wide and medium plate mill