High-temperature long-life self-lubricating wearproof alloy material

Abstract

The present invention relates to the field of high temperature material, and is especially one kind of high temperature self-lubricating antiwear alloy material with long service life. The high temperature self-lubricating antiwear alloy material with long service life is the chemical composition of C 0.35-0.45 wt%, Si 0.9-1.2 wt%, Mn 6.5-8.0 wt%, Cr 15-16.5 wt%, Mo 0.35-0.45 wt%, Cu 0.8-1.2 wt%, Al 4.5-5.5 wt%, S 0.25-0.45 wt%, N 0.01-0.10 wt%, V 0.15-0.20 wt%, B 0.05-0.15 wt%, RE 0.01-0.15 wt%, P not more than 0.025 wt%, Ni not more than 0.3 wt%, and Fe for the rest. Compared with available technology, the present invention has the advantages of low cost, high heat resistance, high strength and hardness at high temperature, excellent antiwear performance and anti-friction performance, high anticorrosive performance and long service life.

Description

technical field [0001] The invention belongs to the field of high-temperature metal self-lubricating materials, in particular to a high-temperature long-life self-lubricating wear-resistant alloy material. It is mainly suitable for parts and components that serve in high temperature environment (650℃-1050℃), such as manufacturing sliding and guiding devices (plates, tips, blocks, electromechanical, petrochemical, machinery and other fields) tube), bearings (shoes, sleeves) and other types of sliding friction parts. Background technique [0002] In the prior art, wear and abrasion are one of the important causes of energy and material consumption in the industrial field, and among different types of wear, adhesive wear is the type of wear that occupies the largest proportion. Lubricating oil is used to reduce adhesive wear in the operation of various equipment and spare parts under normal temperature environment, but the lubricating oil will lose its lubricating and cooling ...

AI Technical Summary

Problems solved by technology

Moreover, the existing friction parts generally have the disadvantages of low high-temperature strength, poor wear resistance, and high-temperature oxidation resistance. Therefore, the development and promotion of self-lubricating materials with high temperature resistance and wear resistance have attracted more and more attention from scientific researchers.

[0003] Due to the fact that there are very few materials suitable for working in high temperature environments (above 1000°C) for a long time, and the high price of high temperature resistant alloys (high Ni, W, Mo alloys) limits their wide use

For example, in the CN1034584A and CN1101681A documents, the high-temperature self-lubricating nickel-based alloy introduced has good lubricating properties and mechanical properties, but the main disadvantages of this material are: when used at high temperatures, the strength of the material itself is significantly reduced and heat-resistant In addition, the content of noble metal elements such as Co, Mo, Ni, and W in the alloy material composition is relatively high, and the manufacturing cost of the material is also high, thus reducing the application value of the alloy material

Due to the high price of precious metals such as Co, Mo, Ni, W, etc., it affects the popularization and use

CN1614058A discloses a free-cutting high-temperature self-lubricating and wear-resistant alloy material, which belongs to Ni and Al intermediate strengthening phase high-temperature alloy, wherein the nickel content is as high as 60%, and the service temperature range is 200-900 ° C. It is a free-cutting alloy material resistant to adhesive wear Ni is used in the design 3 Al is the base phase, the price is high

[0009] The support wheel assembly and the synchronous shaft bearing seat in the slab heating furnace tapping machine support arm device used tin bronze composite material bushings in use. Due to the on-site heat radiation temperature above 750 °C, the grease lubrication could not be carried out normally, resulting in tin Bronze composite shaft sleeves are severely worn in a short period of time, causing the transmission shaft to be out of level, and there are up and down jumps and left and right swings, which seriously affect the production process and safety

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