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A kind of M50 base bearing self-lubricating material and preparation method thereof

A technology of self-lubricating materials and base bearings, applied in shafts and bearings, bearing components, metal material coating technology, etc., can solve the difficulties in adjusting the tribological properties of self-lubricating materials, and the difficulty in reconciling the self-lubricating properties and mechanical properties of self-lubricating materials and other problems, to achieve the effect of simple and novel preparation method, cheap material and strong operability

Active Publication Date: 2022-05-27
XIAN TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the materials used in the above studies are all prepared by mechanically mixing and sintering the base material and the lubricant through powder metallurgy technology. The tribological properties of the prepared self-lubricating materials are also difficult to control

Method used

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  • A kind of M50 base bearing self-lubricating material and preparation method thereof
  • A kind of M50 base bearing self-lubricating material and preparation method thereof
  • A kind of M50 base bearing self-lubricating material and preparation method thereof

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preparation example Construction

[0032] In the following examples, the M50-based bearing self-lubricating material uses M50 steel as the base material, Sn-Ag-Cu as the lubricating phase, and carbon nanotubes (CNTs) as the reinforcing phase. The technology is to process the micropores on the surface of the M50 bearing steel material, prepare the Sn-Ag-Cu spherical powder containing CNTs by the vacuum atomization method, and then fill the Sn-Ag-Cu / CNTs spherical powder on the surface by the high temperature and high pressure infiltration technology. In the micropore, the M50 base bearing self-lubricating material is obtained. The present invention provides a specific preparation method, but the preparation method is not limited. Sn-Ag-Cu / CNTs spherical powder, surface microporous structure, and M50-based bearing self-lubricating materials prepared by other methods meet the requirements of the present invention. protection scope of the present invention.

[0033] The invention provides a preparation method of M...

Embodiment 1

[0039] like figure 1 As shown in the figure, a preparation method of M50-based bearing self-lubricating material is to use EDM micro-hole machining technology to process micro-holes on the surface of M50 bearing steel material, and secondly, use vacuum atomization to prepare Sn-Ag-Cu / CNTs spherical powder, and then use the high temperature and high pressure infiltration technology to fill the Sn-Ag-Cu / CNTs spherical powder in the surface micropores to obtain an M50-based bearing self-lubricating material. Specific steps are as follows:

[0040] 1) M50 bearing steel material is selected, and the surface of M50 is micro-processed by EDM micro-hole machining technology. The diameter of the micro-hole is 200 μm, the depth of the micro-hole is 800 μm, and the distance between two adjacent micro-holes is equal, which is 700 μm;

[0041] The process parameters of EDM micro-hole machining are pulse width of 600nS and pulse-to-pulse range of 400nS;

[0042] 2) Select Sn, Ag, Cu, and...

Embodiment 2

[0047] A preparation method of M50-based bearing self-lubricating material, which is to use EDM micro-hole machining technology to process array micro-holes on the surface of M50 bearing steel material, and secondly, use vacuum atomization method to prepare Sn-Ag-Cu / CNTs spherical shape powder, and then use the high temperature and high pressure infiltration technology to fill the Sn-Ag-Cu / CNTs spherical powder in the surface micropores to obtain the M50-based bearing self-lubricating material. Specific steps are as follows:

[0048] 1) Select M50 bearing steel material, and use EDM micro-hole machining technology to micro-hole process the M50 surface. The diameter of the micro-hole is 250 μm, the depth of the micro-hole is 900 μm, and the distance between two adjacent micro-holes is equal, which is 850 μm;

[0049] The process parameters of EDM micro-hole machining are pulse width of 750nS and pulse-to-pulse range of 550nS;

[0050] 2) Select Sn, Ag, Cu, CNTs powder, and the...

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Abstract

The invention relates to an M50-based bearing self-lubricating material and a preparation method thereof, mainly using M50 steel, an aviation spindle bearing material, as a base material, Sn-Ag-Cu as a lubricating phase, and carbon nanotubes (CNTs) as a reinforcing phase; M50 Micropores are arranged on the steel surface, and Sn‑Ag‑Cu / CNTs are filled in the surface micropores to realize the lubrication function. The present invention adopts ultra-precision EDM micropore electrical processing technology to prepare surface micropores of M50 steel; secondly, utilizes vacuum atomization method to prepare Sn-Ag-Cu spherical powder containing CNTs; The Ag-Cu / CNTs spherical powder is directly infiltrated into the surface micropores of M50 steel to obtain the M50-based bearing self-lubricating material. The M50-based bearing self-lubricating material of the invention has excellent wear-reducing and wear-resistant properties, can effectively improve the tribological properties of the M50 steel material, and has a simple and convenient preparation method, and the preparation process is easy to control.

Description

technical field [0001] The invention relates to an M50 base bearing self-lubricating material and a preparation method thereof, belonging to the field of solid self-lubricating composite materials. Background technique [0002] M50 high-temperature bearing steel has many excellent characteristics such as high high-temperature dimensional stability, high-temperature hardness, high-temperature contact fatigue performance, etc., and is the main steel for aero-engine spindle bearings in various countries around the world. At present, the main development direction of aero-engines is high thrust-weight ratio, which makes the operating conditions of aero-bearings tend to be higher speed and heavy load. This will lead to more serious friction and wear problems of aero-engine main shaft bearings under high temperature conditions. Therefore, how to develop M50 aeronautical main shaft bearings with excellent wear reduction and wear resistance has important engineering value. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10B22F9/08B23H1/00B23H9/14F16C33/10F16C33/66
CPCC23C24/103B22F9/082B23H1/00B23H9/14F16C33/1095F16C33/6696
Inventor 刘锡尧卢志伟闫斌张君安刘波王亚娟孙小亮
Owner XIAN TECH UNIV
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