Alloy nodular cast iron roll
A cast iron roll, alloy ball technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problems of high-strength and low-alloy structural steel, serious spalling and crack tendency, low degree of alloying, etc., to improve bending resistance. Strength, carbide morphology improvement, and effect of increasing single-groove rolling
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Embodiment 1
[0016] An alloy ductile iron roll, including the following components by mass percentage: C: 3.6%, Si: 1.7%, Mn: 0.6%, P: 0.025%, S: 0.02%, Cr: 0.2%, Ni: 1.7% , Mo: 0.5%, Mg: 0.05%, Nb: 0.08%, Ti: 0.12, V: 0.3, and the rest is Fe.
Embodiment 2
[0018] An alloy ductile iron roll, including the following components by mass percentage: C: 3.8%, Si: 2.0%, Mn: 0.7%, P: 0.025%, S: 0.02%, Cr: 0.2%, Ni: 1.7% , Mo: 0.5%, Mg: 0.05%, Nb: 0.08%, Ti: 0.12, V: 0.3, and the rest is Fe.
[0019] Compared with conventional nodular cast iron rolls, the alloy nodular cast iron rolls of the invention have significantly improved bending strength, impact toughness, deflection, reduction of area, elongation after fracture, yield strength and the like. Adopting the alloy ductile iron roll of the present invention can increase the single-slot rolling capacity of the bar finish rolling by about 40%, greatly reduces the downtime for changing rolls and slots, significantly improves the operating rate of the rolling mill, and at the same time reduces the quality of the roll. Optimized and improved the surface quality of the rolled material, and solved the problem of peeling of the inner surface layer of the finish rolling work roll, and the cost...
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