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High Strength Nodular Iron (NCC SGP) Rolls for Section Mill1
Metallic Processing Machinery, Rolls, Mill Rolls
Camet Metallurgical Technologies Co., Ltd.
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Product Description Spheroidal graphite cast iron rollPropertiesThanks to its higher content of Ni and Mo alloys, pearlite, basinite and martensite matrixes with excellent performance are produced. Thegraphite si spherical form, demonstraing good heat transfer property and high tensile strength. Through changing the struture into basiniteof marensite matrix, chemical compostion of needly-like spherical iron of heat treatment, a dense reticular primary cementite with high wear-resistance is produced. Chemical AnalysisDesignation of rollsCSiMnPSNiCrMoMgCrMo semi-chilled SG cast iron rolls2.9/3.60.8/2.50.4/1.2≤0.25≤0.03 0.2/0.60.2/0.6>0.04CrMo indefinite chilled SG cast iron rolls2.9/3.60.8/2.50.4/1.2≤0.25≤0.03 0.2/0.60.2/0.6>0.04NiCrMo indefinite chilled SG cast iron rolls (I)2.9/3.60.8/2.50.4/1.2≤0.25≤0.030.5/1.00.2/0.60.2/0.6>0.04NiCrMo indefinite chilled SG cast iron rolls (II)2.9/3.60.8/2.50.4/1.2≤0.25≤0.031.0/2.00.3/1.20.2/0.8>0.04Pearlitic nodular cast iron rolls (I)2.9/3.61.4/2.20.4/1.0≤0.15≤0.031.5/2.00.1/0.60.2/0.8>0.04Pearlitic nodular cast iron rolls (II)2.9/3.61.2/2.00.4/1.0≤0.15≤0.032.0/2.50.2/1.00.2/0.8>0.04Pearlitic nodular cast iron rolls (III) 2.9/3.6 1.0/2.0 0.4/1.0 ≤0.15 ≤0.03 2.5/3.0 0.2/1.20.2/0.8 >0.04 bainitic nodular cast iron rolls (I) 2.9/3.6 1.2/2.2 0.2/0.8 ≤0.10 ≤0.03 3.0/3.50.2/1.0 0.5/1.0 >0.04 bainitic nodular cast iron rolls (II) 2.9/3.6 1.2/2.0 0.2/0.8 ≤0.10 ≤0.03 3.5/4.5 0.3/1.5 0.5/1.0 >0.04 Physical PropertiesDesignation of rollsBarrel hardness (HSD)Neck hardness (HSD)Tensile strength (MPa)CrMo semi-chilled SG cast iron rolls40~5532~50>300CrMo indefinite chilled SG cast iron rolls55~7035~55>300NiCrMo indefinite chilled SG cast iron rolls (I)48~7035~55>320NiCrMo indefinite chilled SG cast iron rolls (II)48~7035~55>320Pearlitic nodular cast iron rolls (I)45~5535~55>450Pearlitic nodular cast iron rolls (II)55~6535~55>450 Pearlitic nodular cast iron rolls (III) 62~72 35~55 >450 bainitic nodular cast iron rolls (I) 55~78 32~45 >350 bainitic nodular cast iron rolls (II) 60~8032~45 >350 MicrostructureDesignation of rollsMicrostructureCrMo semi-chilled SG cast iron rollsPearlite + cementite + SG + small percentage fermiteCrMo indefinite chilled SG cast iron rollsPearlite + cementite + SGNiCrMo indefinite chilled SG cast iron rolls (I)Pearlite + cementite + SGNiCrMo indefinite chilled SG cast iron rolls (II)Fine pearlite + cementite + SGPearlitic nodular cast iron rolls (I)pearlite + cementite + small percentage fermitePearlitic nodular cast iron rolls (II)pearlite + cementite + small percentage fermite Pearlitic nodular cast iron rolls (III) pearlite + cementite + small percentage fermite bainitic nodular cast iron rolls (I)bainite + cementite + SG bainitic nodular cast iron rolls (II)bainite + cementite + SG ApplicationDesignation of rollsApplicationCrMo semi-chilled SG cast iron rollsSection mill, bar mill, roughing stands of wire-rod mill, work roll of rail millCrMo indefinite chilled SG cast iron rollsSection mill, bar mill, intermediate and finishing stands of wire-rod millNiCrMo indefinite chilled SG cast iron rolls (I)Section mill, bar mill, intermediate and finishing stands of wire-rod millNiCrMo indefinite chilled SG cast iron rolls (II)Section mill, bar mill, intermediate and finishing stands of wire-rod millPearlitic nodular cast iron rolls (I)roughing stands of bar mill and wire-rod millPearlitic nodular cast iron rolls (II)roughing stands of bar mill and wire-rod mill Pearlitic nodular cast iron rolls (III) roughing stands of bar mill and wire-rod mill bainitic nodular cast iron rolls (I) roughing stands of bar mill and wire-rod mill bainitic nodular cast iron rolls (II) roughing stands of bar mill and wire-rod mill
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