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mill roll

Bar and wire mill rolls

Material:Nodular cast iron
Size：φ300-1300
Hardness：58-76
Can be designed and customized according to requirements
Product description:
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Chemical composition (%)

CODE	C	Si	Mn	Cr	Ni	Mo	Mg
SGP-1	2.9-3.8	0.8-2.5	0.4-1.2	0.2-0.6	－	0.2-0.6	≥0.04
SGP-2	2.9-3.8	0.8-2.5	0.4-1.2	0.2-0.6	0.2-2.5	0.2-0.6	≥0.04
SGP-3	3.0-3.6	1.6-2.3	0.3-1.0	0.1-1.4	1.2-2.1	0.2-0.6	≥0.04
SGP-4	3.0-3.6	1.0-2.4	0.2-1.0	0.5-1.2	1.0-3.5	0.2-0.8	≥0.04

Physical Property

CODE	Barrel hardness HS	Uniformity of roller body hardness HS	Roll neck hardness HS	Tensile strengthMPa
SGP-1	58-70	－	35-55	﹥320
SGP-2	62-70	－	35-55	﹥320
SGP-3	58-63	≤5	32-43	≥390
SGP-4	58-72	≤5	35-55	≥390

The graphite in the matrix structure is characterized by its spherical shape. By adjusting the nickel, chromium, and molybdenum alloy elements and specific heat treatment systems, different series of rolling rolls (roller rings) can be made from ordinary ductile iron, large alloy ductile iron, pearlite ductile iron, and needle shaped ductile iron. These products have good strength, high temperature performance, and accident resistance, and the difference in hardness of the working layer is extremely small.