Alloy nodular cast iron roll

Abstract

The invention discloses an alloy nodular cast iron roll which comprises the following components in percentage by mass: 3.6-3.8 percent of C, 1.7-2.0 percent of Si, 0.6-0.7 percent of Mn, less than 0.025 percent of P, less than 0.02 percent of S, 0.1-0.3 percent of Cr, 1.5-2.0 percent of Ni, 0.4-0.6 percent of Mo, 0.04-0.06 percent of Mg and the balance of Fe and inevitable impurities. Due to the mode, according to the alloy nodular cast iron roll, the bending strength, impact toughness, deflection, percentage reduction of area, percentage elongation after fracture and yield of the roll can be improved.

Description

technical field [0001] The invention relates to the technical field of rolls, in particular to an alloy ductile iron roll. Background technique [0002] Iron and steel materials play an important role in social and economic life, and rolling steel into products requires a large amount of rolls. Therefore, the quality of the roll directly affects the quality and production cost of the steel. As the steel rolling process becomes increasingly automated, continuous and heavy-duty, the use conditions of the rolls are also becoming increasingly harsh. Equipping rolling mills with high-performance rolls has become an important research topic in the roll industry, and the optimization of roll materials is undoubtedly the basis for manufacturing high-performance rolls. [0003] Most of the existing roll materials are made of high-strength low-alloy structural steel. The degree of alloying of this type of material is low. After the final heat treatment, the depth of the hardened lay...

AI Technical Summary

Problems solved by technology

[0003] Existing roll materials mostly use high-strength low-alloy structural steel. The degree of alloying of this type of material is low. After the final heat tr