Steel for ball mill steel ball and preparation method thereof

Abstract

The invention relates to steel for a ball mill steel ball and a preparation method thereof. The steel comprises the following components in percentage by weight: 0.75 to 0.85 percent of C, 0.17 to 0.35 percent of Si, 0.70 to 0.90 percent of Mn, 0.40 to 0.60 percent of Cr, 0.010 to 0.060 percent of Al, more than or equal to 0.20 percent of Cu, more than or equal to 0.20 percent of Ni, more than or equal to 0.030 percent of P, more than or equal to 0.030 percent of S, more than or equal to 0.002 percent of O and the balance of Fe and inevitable impurities. The preparation method comprises steps of smelting, refining outdoors, continuous casting and continuous rolling. The steel has the characteristics of high rigidity, high strength, high wear resistance, short production period, low production cost and capability of substituting high-alloy wear-resistant steel serving as the ball mill steel ball.

Description

technical field [0001] The invention relates to the field of iron and steel metallurgy, and more specifically relates to a steel mainly used in ball mill steel balls and a preparation method thereof. Background technique [0002] Ball mill steel balls are undoubtedly the largest wear-resistant material consumable in the world's crushing industry at present and even in the foreseeable future. In 2009, only one industry in China, mineral processing, consumed about 2 million tons of steel balls of various materials, while my country's cement industry 2010 is also expected to consume a record 200,000 tons. Ball mill steel balls are important basic components of ball mills, especially precision industrial steel balls play a huge role in the development of the national economy, and are widely used in cement plants, power plants, etc. [0003] During the operation of the steel ball of the ball mill, the working conditions are very complicated. When the moving parts are running at h...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the casting process is used to produce steel materials for steel balls, requiring high alloying elements in the chemical composition, low production efficiency, high cost, and large quality fluctuations

So far no large-scale steel industry has been involved in the production of steel materials

Images