Steel for wear-resistant steel ball and rolling processing method of the steel ball

Abstract

The invention discloses steel for a wear-resistant steel ball and a rolling machining method of the wear-resistant steel ball, and belongs to the technical field of spherical steel product machining.The steel for the wear-resistant steel ball is characterized in that the wear-resistant steel ball comprises the following primary chemical components of, by mass percent, 0.70-0.78% of carbon, 0.15-0.35% of silicon, 0.80-0.90% of manganese, less than or equal to 0.03% of phosphorus, less than or equal to 0.03% of sulfur, 0.5-0.6% of chromium, less than or equal to 0.25% of nickel and less than orequal to 0.25% of copper. The rolling machining method comprises the technological steps of treatment in a rotary furnace, LF refining, VD refining, continuous casting, straightening, acid pickling,neutralization, rolling, quench tempering, packaging and warehousing, and thus the wear-resistant steel ball is obtained. The production efficiency of the wear-resistant steel ball manufactured by rolling is high and the quality of the wear-resistant steel ball is high; a rolling technology is carried out by a tandem mill, so that the labor intensity of workers is reduced, and the labor environment is improved; and the overall process is automatically controlled, so that the hardness of the wear-resistant steel ball is uniform, the core hardness is high, the percentage of damage is low, and the impact value of the wear-resistant steel ball is high.

Description

technical field

[0001] The invention belongs to the technical field of spherical steel processing, and more specifically relates to a steel for wear-resistant steel balls and a rolling processing method of the steel balls. Background technique

[0002] With the development of the economy and the continuous improvement of people's living standards, wear-resistant steel balls are a kind of crushing medium used in ball mills, and are closely watched by people in related fields in the crushing of materials in mills. Wear-resistant steel balls used in building materials, metallurgy, mining, ceramics and electric power industries are divided into two categories: cast steel balls and forged steel balls. Among them, cast steel balls mainly include chromium steel balls, high chromium steel balls and chromium steel balls.

[0003] Generally speaking, cast balls can be called "heat-resistant" balls, which are suitable for dry grinding. In beneficiation, especially for semi-autogenous ...

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