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A kind of 20crmnti-based self-lubricating composite material with spherical structure ag-mg as solid lubricant and its preparation method

A solid lubricant and self-lubricating material technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of restricting further application, poor friction reduction and anti-wear performance, etc., to facilitate mass production, good friction reduction and wear resistance The effect of high performance and energy efficiency

Active Publication Date: 2020-01-24
武汉普胜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that its poor anti-friction and anti-wear performance under high temperature and high load limits its further application in the field of mechanical engineering 【Zhu Fankang; Zhang Weiwen

Method used

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  • A kind of 20crmnti-based self-lubricating composite material with spherical structure ag-mg as solid lubricant and its preparation method
  • A kind of 20crmnti-based self-lubricating composite material with spherical structure ag-mg as solid lubricant and its preparation method
  • A kind of 20crmnti-based self-lubricating composite material with spherical structure ag-mg as solid lubricant and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]1) Preparation of binary spherical solid lubricant Ag-Mg: According to the atomic ratio (at.%) of about 52:48, select appropriate amount of Ag and Mg powders and add them to the aqueous solution containing auxiliary reagents, and stir evenly to form a uniformly distributed mixture liquid. After drying treatment, Ag and Mg are uniformly mixed powder particles. The dried powder particles are transported into the oxygen-acetylene spray torch device by the feeding device, and the molten droplet reactant is sprayed into the purified ultrapure water at a temperature of 950°C for condensation into balls. Collect the binary spherical solid lubricant Ag-Mg in ultrapure water, and dry it at ≤70°C to obtain the binary spherical solid lubricant Ag-Mg powder particles. The auxiliary reagent is a small amount of chlorinated sodium;

[0032] 2) Material ratio: 20CrMnTi matrix material is selected according to the mass ratio (wt.%) of Fe powder, Cr powder, Mn powder, Ti powder and Si ...

Embodiment 2

[0038] 1) Preparation of binary spherical solid lubricant Ag-Mg: According to the atomic ratio (at.%) of about 52:48, select appropriate amount of Ag and Mg powders and add them to the aqueous solution containing auxiliary reagents, and stir evenly to form a uniformly distributed mixture liquid. After drying treatment, Ag and Mg are uniformly mixed powder particles. The dried powder particles are transported into the oxygen-acetylene spray torch device by the feeding device, and the molten droplet reactant is sprayed into the purified ultrapure water at a temperature of 950°C for condensation into balls. Collect the binary spherical solid lubricant Ag-Mg in ultrapure water, and dry it at ≤70°C to obtain the binary spherical solid lubricant Ag-Mg powder particles;

[0039] 2) Material ratio: 20CrMnTi matrix material is selected according to the mass ratio (wt.%) of Fe powder, Cr powder, Mn powder, Ti powder and Si powder as 97.35:1.22:0.96:0.13:0.34. The solid lubricant Ag-Mg...

Embodiment 3

[0044] 1) Preparation of binary spherical solid lubricant Ag-Mg: According to the atomic ratio (at.%) of about 52:48, select appropriate amount of Ag and Mg powders and add them to the aqueous solution containing auxiliary reagents, and stir evenly to form a uniformly distributed mixture liquid. After drying treatment, Ag and Mg are uniformly mixed powder particles. The dried powder particles are transported into the oxygen-acetylene spray torch device by the feeding device, and the molten droplet reactant is sprayed into the purified ultrapure water at a temperature of 950°C for condensation into balls. Collect the binary spherical solid lubricant Ag-Mg in ultrapure water, and dry it at ≤70°C to obtain the binary spherical solid lubricant Ag-Mg powder particles;

[0045] 2) Material ratio: 20CrMnTi matrix material is selected according to the mass ratio (wt.%) of Fe powder, Cr powder, Mn powder, Ti powder and Si powder as 97.35:1.22:0.96:0.13:0.34. The solid lubricant Ag-Mg...

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Abstract

The invention provides a 20CrMnTi-based self-lubricating material with a spherical structure Ag-Mg as a solid lubricant and a preparation method thereof, comprising the following steps: selecting Ag and Mg powders, adding them to an aqueous solution, drying, melting, and condensing to obtain a spherical Ag‑Mg solid lubricant. Fe powder, Cr powder, Mn powder, Ti powder and Si powder, and Ag-Mg solid lubricant with a total mass of 10-20 wt.% are taken, and mixed to obtain a sintering batch. The sintering batch is treated with spark plasma technology. In this method, the spherical solid lubricant is in-situ compounded in the 20CrMnTi matrix, the friction coefficient is small, and the wear rate is low. The self-lubricating material and the preparation method are conducive to further promoting the application of the 20CrMnTi-based gear material in the fields of aviation, aerospace, metallurgy and the like, so as to satisfy the lubrication of mechanical parts in extreme environments and improve its service life and use accuracy.

Description

technical field [0001] The invention relates to a self-lubricating composite material, in particular to a 20CrMnTi-based self-lubricating composite material with a spherical structure Ag-Mg as a solid lubricant and a preparation method thereof. Background technique [0002] With the rapid development of industries such as aviation, aerospace, metallurgy and building materials, moving parts under extreme working conditions such as high temperature, high load, strong radiation and other environments have higher requirements for lubrication methods and lubrication materials. requirements. Moreover, the existing solid lubricants usually have no fixed structure and are irregular in shape like sand, which cannot achieve a good lubricating effect. Therefore, it is very important and urgent to develop a 20CrMnTi-based self-lubricating composite material with a spherical structure Ag-Mg as a solid lubricant to solve the problem of material lubrication and failure of mechanical parts...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/02C22C38/28C22C38/04C22C38/02B22F3/105B22F1/00B22F9/08
CPCC22C33/0207C22C38/002C22C38/007C22C38/02C22C38/04C22C38/28B22F3/105B22F9/08B22F2998/10B22F2003/1051B22F1/105
Inventor 周贤明兴祖
Owner 武汉普胜科技有限公司
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