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Method for preparing brake Fe-Cu-Al-SiC composite friction material

A composite friction material, fe-cu-al-sic technology, applied in the direction of friction linings, mechanical equipment, etc., can solve the problem of high-temperature material strength, hardness, friction coefficient and wear rate, etc. performance reduction, low operating temperature range, friction Problems such as the material is easy to lock, to achieve the effect of short reaction time, controllable temperature and high production efficiency

Inactive Publication Date: 2011-04-06
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to an improved type for making strong materials that are resistant against sticks or wearing out quickly during use at very light loads without losing their effectiveness due to excessive resistance when they shouldn't work properly. This improves safety by reducing unnecessary costs associated with overheated parts while still maintaining effective operation.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the durability and resistance against sliding when applying lubricant compositions on steel surfaces during use at elevated temperatures without reducing their effectiveness over longer periods of time with traditional processes like calibration techniques that require prolonged exposure times and consume large amounts of power.

Method used

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  • Method for preparing brake Fe-Cu-Al-SiC composite friction material
  • Method for preparing brake Fe-Cu-Al-SiC composite friction material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Manufacturing process:

[0031] Electrolytic copper powder: particle size less than 100μm, Cu purity greater than 99.9%;

[0032] Reduced iron powder: particle size less than 100μm, Fe purity greater than 99.9%;

[0033] Aluminum powder: particle size less than 100μm; Al purity greater than 99.9%;

[0034] Silicon carbide powder: particle size less than 75μm; SiC purity greater than 99.9%;

[0035] Chromium powder: particle size less than 100μm; Cr purity greater than 99.9%;

[0036] Manufacturing process:

[0037] Weigh the corresponding powder according to a certain mass ratio (Cu-Fe-Al: 80%; SiC: 10%; graphite and Cr: 10%), and then mechanically mix them evenly;

[0038] Under the pressure of 800MPa, adopt the powder metallurgy compression molding method to press into a 20mm cylindrical compact; put the compact into a stainless steel container with a wall thickness of 2mm, and fill it with protective gas;

[0039] Put the container into the coil of the mediu...

Embodiment 2

[0045] (1) Manufacturing process:

[0046] Electrolytic copper powder: particle size less than 100μm, Cu purity greater than 99.9%;

[0047] Reduced iron powder: particle size less than 100μm, Fe purity greater than 99.9%;

[0048] Aluminum powder: particle size less than 100μm; Al purity greater than 99.9%;

[0049] Silicon carbide powder: particle size less than 75μm; SiC purity greater than 99.9%;

[0050] Chromium powder: particle size less than 100μm; Cr purity greater than 99.9%;

[0051] Manufacturing process:

[0052] Weigh the corresponding powder according to a certain mass ratio (Fe-Cu-Al: 70%; SiC: 15%; graphite and Cr 15%), and then mechanically mix it evenly;

[0053] Under the pressure of 900MPa, use the powder metallurgy compression molding method to press into a 20mm cylindrical compact; put the compact into a stainless steel container with a wall thickness of 2mm, and fill it with protective gas;

[0054] Put the container into the coil of the medium-fre...

Embodiment 3

[0059] (1) Manufacturing process:

[0060] Electrolytic copper powder: particle size less than 100μm, Cu purity greater than 99.9%;

[0061] Reduced iron powder: particle size less than 100μm, Fe purity greater than 99.9%;

[0062] Aluminum powder: particle size less than 100μm; Al purity greater than 99.9%;

[0063] Silicon carbide powder: particle size less than 75μm; SiC purity greater than 99.9%;

[0064] Chromium powder: particle size less than 100μm; Cr purity greater than 99.9%;

[0065] Manufacturing process:

[0066] Weigh the corresponding powder according to a certain mass ratio (Fe-Cu-Al: 90%; SiC: 5%; graphite and Cr 5%), and then mechanically mix evenly;

[0067] Under the pressure of 1000MPa, use powder metallurgy compression molding method to press into a 20mm cylindrical compact; put the compact into a stainless steel container with a wall thickness of 2mm, and fill it with protective gas;

[0068] Put the container in the coil of the medium-frequency ind...

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Abstract

The invention provides a method for preparing brake Fe-Cu-Al-SiC composite friction material by adding friction components of SiC, lubricating components of graphite and alloy components of Mn and Cr to Fe-Cu-Al based alloy used as a substrate. The method comprises the following concrete preparation steps of: 1. selecting raw and auxiliary powdery materials; 2. weighing materials in the mass ratio; 3. mechanically stirring and uniformly mixing; 4. pressing the materials into cylindrical green compacts; 5. placing the green compacts into a stainless steel container and charging protective gas of nitrogen gas; 6. placing the container into a medium-frequency induction heating coil to be heated and insulated; 7. taking out specimens, ultrasonic cleaning and carrying out air drying; and 8. detecting the performance of the specimens. In the method, the Cu-Fe-Al-SiC composite friction material with high intensity and good brake performance is prepared by taking the Cu-Fe-Al based alloy material as the substrate and adding components such as wear-resistance and adhesion-resistance components of SiC and the like through the component optimization design and the process research, and the method has important significance on the research and the development of adhesion-resistance metal based composite friction materials and the enrichment of the tribological performance research.

Description

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Claims

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Application Information

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Owner DALIAN UNIV
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