High-hardness high-toughness grinding ball material and preparation method thereof

Abstract

The invention discloses a high-hardness high-toughness grinding ball material and a preparation method of the high-hardness high-toughness grinding ball material. The high-hardness high-toughness grinding ball material comprises the following components of, by mass percentage, 2.65-2.95% of C, 0.48-0.56% of Si, 0.74-1.74% of Mn, 17.1-21.2% Cr, 0.24-0.55% of V, 0.21-0.29% of Ti, 0.1% of RE and thebalance of Fe. By reasonably matching the components of raw materials and controlling the content of the components, the wear resistance and toughness of the prepared grinding ball can be better optimized when compared with that of a traditional grinding ball material, the performance of the high-hardness high-toughness grinding ball material can be equivalent to or superior to that of a grindingball material prepared by elements Ni and W which are commonly adopted in the prior art, and the cost of the raw materials of the high-hardness high-toughness grinding ball material is far lower thanthat of raw materials such as the elements Ni and W.

Description

technical field [0001] The invention belongs to the field of grinding ball materials, and in particular relates to a high-hardness and high-toughness grinding ball material and a preparation method thereof. Background technique [0002] In the main grinding equipment for building materials, mineral processing, cement, thermal power generation and chemical fertilizer production, the grinding ball is the wear-resistant part with the largest loss. Therefore, with the continuous development of key industries such as building materials, the performance requirements for grinding balls will become higher and higher, and the demand for grinding balls will increase. [0003] According to incomplete statistics in recent years, the country consumes millions of tons of various grinding balls every year, worth billions of yuan. According to the data of the 2004 Beijing Friction Science and Engineering Frontier Symposium, wear and tear lost 1 of the world's primary energy. / 3. The econo...

AI Technical Summary

Problems solved by technology

It can be seen that the grinding ball industry is playing an increasingly important role in the development of our country, but at the same time there are also problems such as lagging behind in the development of new products and backward technology. At present, the material used in domestic grinding ball production is mainly chromium-based white cast iron.

Although high-chromium alloy cast iron has the advantages of high wear resistance and low breakage rate, the cost of grinding balls is high due to the need to add more alloying elements and smelting in an electric furnace, such as adding high-cost, hard-to-get Ni and W etc. to improve the toughness of the ball

Images