Abrasion-resistant gear and preparation method

Abstract

The invention discloses an abrasion-resistant gear and a preparation method. A gear material comprises, by mass, 65%-85% of ferrum, 0.3%-1.2% of manganese dioxide, 0.5%-1.6% of molybdenum disulfide, 0.1%-0.9% of nickel oxide, 0.3%-1.2% of cobalt carbide, 1%-3% of silicon carbide, 1%-3% of silicon dioxide, 0.2%-0.8% of chromium, 1.5%-3.5% of tin, 3%-15% of copper, 0.1%-0.3% of phosphorus, 0.1%-0.5% of zirconium, 0.3%-2% of graphite, 0.5%-2% of lanthanum-cerium alloy, 0.2%-0.8% of auxiliaries and the balance inevitable microelements and impurities. The preparation method mainly comprises the steps of weighing of raw materials, pretreatment, component mixing, preforming, high-temperature sintering and aftertreatment. The produced gear material has high strength and hardness and also has good abrasion resistance and impact resistance.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a wear-resistant gear and a preparation method. Background technique [0002] Powder metallurgy is a process technology that uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, after forming and sintering, to manufacture metal materials, composite materials and various types of products, mechanical parts manufactured by powder metallurgy method, and Sintered mechanical parts, usually including mechanical structural parts, oil bearings and friction parts, are widely used in agricultural machinery, automobiles, machine tools, instruments, textiles, light industry and other fields. At the same time, the melting temperature of high-temperature melting point metals is quite high. Traditional casting has difficult, and the use of powder metallurgy can significantly reduce its sintering activation energy (such as tungsten, zirconium, chromium, molybden...

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Problems solved by technology

[0002] Powder metallurgy is a process technology that uses metal powder (or a mixture of metal powder and non-metal powder) as raw material, after forming and sintering, to manufacture metal materials, composite materials and various types of products, mechanical parts manufactured by powder metallurgy method, and Sintered mechanical parts, usually including mechanical structural parts, oil bearings and friction parts, are widely used in agricultural machinery, automobiles, machine tools, instruments, textiles, light industry and other fields. At the same time, the melting temperature of high-temperature melting point metals is quite high. Traditional casting has difficult, and the use of powder metallurgy can significantly reduce its sintering activation energy (such as tungsten, zirconium, chromium, molybdenum and other metals), so that it can be sintered at a lower temperature. In addition, because powder metallurgy uses powder sintering, its material itself has A certain pore size, so it has a natural advantage in the preparation of porous materials, due to the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials, and plays a pivotal role in the development of new materials, but with the development of the times And the continuous improvement of the comprehensive performance and economy of the product, the performance needs to be improved day by day, and the products with increasingly complex shapes are far from meeting people's needs, so they have higher strength and hardness, and at the same time have better wear resistance and resistance. Multi-alloy products with impact properties are more and more popular