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

A technology of self-lubricating materials and wear-resistant alloys, which is applied in the field of high-temperature and long-life self-lubricating wear-resistant alloy materials, can solve the problems of tin bronze composite bushing wear, high temperature oxidation resistance, affecting production process and safety, etc., to reduce abrasives Wear and corrosion wear rate, excellent wear resistance and friction reduction, effect of improving heat resistance and wear resistance

Inactive Publication Date: 2007-11-07
BEIJING CISRI GAONA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, t...

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Embodiment 1

[0038] Example 1: According to the high-temperature and long-life self-lubricating material designed in the present invention, four alloy materials were prepared and tested and compared according to the existing materials used for different purposes in the field. The specific chemical composition of ZH01 material is shown in Table 1. The compressive strength of the material is 1180MPa at 20℃, 665MPa at 600℃, the room temperature hardness is HRc40, and the friction coefficient is 0.21 at 20℃ and 0.16 at 600℃. The material used in the metallurgical industry bar hot rolling mill transfer roll material is compared with the ZG270-500 material (the specific chemical composition is shown in Table 2DB-1), and the use conditions and properties are shown in Table 3.

Embodiment 2

[0039] Example 2: The specific chemical composition of the ZH02 material is shown in Table 1. The compressive strength of the material is 1230MPa at 20℃, 697MPa at 600℃, the room temperature hardness is HRc42, and the friction coefficient is 0.24 at 20℃ and 0.17 at 600℃. This material is used in metallurgical high temperature wire rod production line finishing rolling guide tube and compared with ZG2Cr13 material (specific chemical composition see Table 2DB-3) guide tube, use conditions and performance see Table 3.

Embodiment 3

[0040] Example 3: The specific chemical composition of the ZH03 material is shown in Table 1. The compressive strength of the material is 1360MPa at 20℃, 720MPa at 600℃, the room temperature hardness is HRc46, and the friction coefficient is 0.20 at 20℃ and 0.15 at 600℃. The material used in the guide device at the inlet end of the metallurgical roughing mill is compared with the guide device of the ZG70Cr14Ni material (see Table 2DB-2 for the specific chemical composition). The use conditions and performance are shown in Table 2.

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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 ...

Claims

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Application Information

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IPC IPC(8): C22C38/38C22C38/58
Inventor 林生李翔徐晓春麻三清夏速萍
Owner BEIJING CISRI GAONA TECH
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