Novel high-temperature resistant self-lubricating sliding bearing material and preparation method thereof

Abstract

The invention discloses a novel high-temperature resistant self-lubricating sliding bearing material. Iron with high high-temperature strength, heat resistance, thermal stability and economical efficiency is taken as a matrix material, high-purity (more than or equal to 95 percent) hard-particle W, Cr and Ni metals are selected as a hard reinforcing phase, nano-scale MoS2 and graphite are selected as a lubricating and wear-reducing phase, a proper amount of glass water serving as an adhesive and a proper amount of mica serving as a reinforcing material are added, and the novel high-temperature resistant self-lubricating sliding bearing material is prepared by a simple and easily-controlled powder metallurgy process. The novel high-temperature resistant self-lubricating sliding bearing material still has low friction coefficient and good wear resistance at high temperature higher than 500DEG C, has the service life improved by more than two times than that of the conventional bearing when operated at temperature higher than 300DEG C, is easy to maintain, can be widely applied to heavy mechanical equipment in energy, chemical engineering, ferrous metallurgy and the like, and is particularly suitable for occasions requiring free lubrication.

Description

technical field [0001] The invention relates to the field of bearing alloy materials, in particular to a novel high temperature resistant self-lubricating sliding bearing material and a preparation method thereof. Background technique [0002] With the development of modern science and technology, the problems of friction, wear and lubrication of materials under high temperature conditions have attracted more and more attention, and ordinary lubricating oils are easy to evaporate under high temperature environments, so it is of great significance to study high temperature lubricating materials. In heavy machinery equipment, all kinds of roller bearings have to withstand harsh working conditions such as impact, high temperature, dust, etc., and the rolling bearings used in the past are not conducive to harsh environments such as high load, vibration and shock due to their small contact area. At the same time, rolling bearings must be well lubricated to ensure low friction per...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a new type of high temperature resistant self-lubricating sliding bearing material, which can overcome the problem of insufficient high temperature wear resistance of existing bearing alloy materials, and still has a low friction coefficient and good resistance to high temperature environments above 500°C. Wear performance, long life, easy maintenance, especially suitable for occasions requiring oil-free lubrication

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