A kind of iron-copper based powder metallurgy anti-friction material and preparation method thereof

Abstract

The invention discloses a ferrum- and copper-based powder metallurgy antifriction material and a preparation method thereof. The material is prepared from the following raw materials in part by weight: 72 to 75 parts of mixed powder, 5 to 8 parts of alumina powder, 3 to 7 parts of zinc oxide, 2 to 5 parts of barium oxide, 4 to 8 parts of carbon monofluoride, 4 to 8 parts of micronized wax, 3 to 7 parts of nickel oxide powder, 10 to 14 parts of tin powder, 2 to 5 parts of zirconium dioxide powder and 3 to 6 parts of carborundum powder. The preparation method comprises the following steps of mixing, pressing, sintering, shaping and impregnating oil. The antifriction material is excellent in wear-resisting property, low in friction coefficient, low in running noise, high in mechanical property, large in bearable load, wide in application range and low in price, and meets the requirement on environment friendliness as components do not contain harmful lead; moreover, the preparation process is simple, parameters are easy to control, the production process is safe and environment-friendly, and the antifriction material is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a composite material, in particular to an iron-copper-based powder metallurgy anti-friction material and a preparation method thereof. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to produce metal materials, composite materials and various types of products. Powder metallurgy has unique chemical composition and mechanical and physical properties, which cannot be obtained by traditional casting methods. The use of powder metallurgy technology can directly make porous, semi-dense or fully dense materials and products, such as oil bearings, gears, cams, guide rods, knives, etc., which is a less cutting process. Compared with traditional melting and casting methods, powder metallurgy has the following characteristics: [0003] (1) Powder metallurgy technology ca...

AI Technical Summary

Problems solved by technology

In the prior art, powder metallurgy iron-copper-based antifriction materials have the characteristics of both copper-based and iron-based antifriction materials, and have the advantages of good wear resistance, high bearing capacity, and corrosion resistance. Iron-copper-based antifriction materials with high copper content The corrosion resistance and running-in performance of friction materials are outstanding, and the running noise is relatively low; but too high copper content will damage the mechanical properties of the matrix, thereby reducing the load bearing and service life of the material, which limits this type of iron-copper base with high copper content. Anti-friction materials in a wider range of applications

However, the raw material formula and sintering process of powder metallurgy anti-friction materials in my country are still at a backward stage compared with foreign countries, which leads to low physical and technological properties of powder metallurgy anti-friction materials.

Compared with foreign technology, there is still a big gap