Hot-rolled round steel for high-carbon-manganese-chromium grinding ball and manufacturing method thereof

Abstract

The invention provides hot-rolled round steel for a high-carbon-manganese-chromium grinding ball. The hot-rolled round steel is prepared from the following components: 0.72 to 0.82 percent of C, 0.17to 0.35 percent of Si, 0.70 to 0.90 percent of Mn, 0.010 to 0.030 percent of P, 0.010 to 0.030 percent of S, 0.50 to 0.70 percent of C, 0.20 to 0.30 percent of In, 0.10 to 0.20 percent of Ag, 0.15 to0.25 percent of Cu, 0.080 to 0.100 percent of Ga, 0.20 to 0.26 percent of Ni, 0.10 to 0.14 percent of Zn, 0.14 to 0.16 percent of Sn and the balance of Fe and unavoidable impurities. The round steel provided by the invention contains relatively high elements including carbon, manganese, tin and the like and can be obtained by refining a casting-state structure of steel, so that the prepared grinding ball has relatively great rigidity; when an object with relatively great rigidity is ground, good wear resistance can be ensured; meanwhile, the round steel also contains the chromium element withrelatively high content, so that the round steel has a relatively strong corrosion-resisting capability and the round steel is suitable for being used in various fields for grinding.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a hot-rolled round steel for high-carbon manganese-chromium grinding balls and a manufacturing method thereof. Background technique [0002] Wear-resistant materials are used in various sectors of metallurgy, mining, building materials, thermal power and machinery industries, with many types and large quantities. High-manganese steel wear-resistant parts have been widely used for grinding balls for a long time. The high-manganese steel wear-resistant parts that have been eliminated abroad account for a large proportion of my country's usage. Abrasiveness and service life cannot be fully utilized, that is, under the condition of low-stress impact abrasive wear, high manganese steel wear-resistant parts cannot give full play to the advantages of material properties, which increases unnecessary production costs. [0003] Therefore, it is of great significance to research and develop ne...

AI Technical Summary

Problems solved by technology

The design of ZG50SiMn2Mo wear-resistant steel mainly adopts composition design to achieve bainite structure after air cooling, but the design cost of this composition is high; ZG30CrMn2SiReB martensitic wear-resistant cast steel has low carbon content and sufficient toughness reserve, suitable for abrasive hardness medium wear parts

Images