Roughing Mill Rolls

China Roughing Mill Rolls leading supplier, choose the high quality Alloy Nodular Cast Iron Rolls, Pearlite Nodular Cast Iron Rolls, Wire Mill Roughing Rolls, Pearlitic Cast Iron Rolls, Non Continuous

Spheroidal Graphite Cast Iron Rolls

Nodular Cast Iron Rolls Also called as Spheroidal Graphite Iron Rolls (SG Iron) is considered as one of the most versatile roll materials now a days. It is produced by a small proportion of magnesium added to the melt as nickel-magnesium or alternative alloy, or as pure magnesium. Microstructure: Pearlite Application: Roughing Rolls for bar and wire rod mills. Chemical composition and surface hardness C Si Mn P S Cr Ni Mo Barrel Hardness HSD Pearlite II 2.90-3.60 0.80-2.50 0.40-1.20 0.20 0.03 0.20-1.20 2.01-2.50 0.20-0.80 55-70 Pearlite III 2.90-3.60 1.00-2.00 0.40-1.00 0.15 0.03 0.20-1.20 2.51-3.00 0.20-0.80 63-73 Neck Hardness(HSD): 35-55 Core Tensile strength: 350Nnm2 min

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Non Continuous Carbide Rolls

NonContinuous Carbide Rolls Rollsfor rough stand mills require a combination of some properties, some of whichcan be counteracted by the others. These properties include wearability, resistance of fire cracking and impact, hot hardness and hot strengh etc.Excessive network carbides will improve wearability and impact resistance butdramatically reduce fracture toughness. Under rough rolling process they canpromote fire cracking formation and added to form BainiticMartensitec(acicular)matrix, which is more wearable than conventional pearlitic matrix. TheMolybdenum can also improve the hot hardness of rolls. This type of roll ismanufactured from high alloy materials with special heat treatment. Carbidecontent in the matrix is less than 5%, which is satisfactory to the requirementof rough stand mill.

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NiCrMo ICDP Nodular Cast Iron Rolls

NiCrMo ICDP Nodular Cast Iron Rolls This rolling Roll's outer layer exhibits a remarkable mechanical performance and the quantity of graphite in the roll work layer remains basically unchanged along the depth, producing therefore no adverse effect on the decrease of hardness of work layer. Application:Roughing Rollsfor bar and wire rolling mills. Chemical Composition and surface hardness C Si Mn P S Cr Ni Mo Barrel Hardness HSD 2.90-3.60 0.80-2.50 0.40-1.20 0.20 0.03 0.30-1.20 1.01-2.00 0.20-0.80 50-70 Neck Hardness: 35-55 Core Tensile Strength: 350Nnm2 mix

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