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Metallic matrix spindle brake pad for wind driven generator and preparation method thereof

A technology of wind turbines and brake pads, which is applied in the field of brake pads, can solve problems such as resource shortages and strategic decisions that do not conform to the country's sustainable development, and achieve the effects of improving mechanical properties, achieving environmental friendliness, and reducing wear rates

Inactive Publication Date: 2011-04-06
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of coal, oil and other non-renewable energy sources for power generation is facing the dilemma of increasingly scarce resources, and it is not in line with the country's strategic decision for sustainable development

Method used

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  • Metallic matrix spindle brake pad for wind driven generator and preparation method thereof
  • Metallic matrix spindle brake pad for wind driven generator and preparation method thereof
  • Metallic matrix spindle brake pad for wind driven generator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The formula description of the wind power generator spindle brake pad provided by the invention

[0038] Copper powder 50 (wt.%), its particle size is ≤70μm, copper powder purity ≥98%,

[0039] Tin powder 5 (wt.%), the particle size of which is ≤70μm,

[0040] Iron powder 20 (wt.%), the particle size is ≤70 μm, and the purity of iron powder is ≥98.5%;

[0041] Chopped steel fibers 5 (wt.%), the length of which is 2-5 mm, and the diameter is 50-150 μm;

[0042] Brass fiber 5 (wt.%), the length of which is 2.5-3.5 mm, and the diameter is 100-200 μm;

[0043] High alumina ceramic fiber 3 (wt.%), the length of which is 0.5-1.5 mm, and the diameter is 50-100 μm;

[0044] Sulfur 1 (wt.%), the particle size of which is ≤200μm;

[0045] Aluminum oxide 2 (wt.%), the particle size of which is 70 μm to 200 μm;

[0046] Silica 3 (wt.%), the particle size of which is 70 μm to 200 μm;

[0047] Flake graphite 2 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and its parti...

Embodiment 2

[0057] The formula description of the wind power generator spindle brake pad provided by the invention

[0058] Copper powder and tin powder 50%, its particle size is ≤70μm, copper powder purity ≥98%, wherein copper powder: tin powder=10:1;

[0059] Iron powder 20 (wt.%), the particle size is ≤70 μm, and the purity of iron powder is ≥98.5%;

[0060] Chopped steel fibers 5 (wt.%), the length of which is 2-5 mm, and the diameter is 50-150 μm;

[0061] Brass fiber 4 (wt.%), the length of which is 2.5-3.5 mm, and the diameter is 100-200 μm;

[0062]High alumina ceramic fiber 4 (wt.%), its length is 0.5~1.5mm, and its diameter is 50~100μm;

[0063] Aluminum oxide 5 (wt.%), the particle size of which is 70 μm to 200 μm;

[0064] Silica 5 (wt.%), the particle size of which is 70 μm to 200 μm;

[0065] Flake graphite 3 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and its particle size is ≤ 70μm;

[0066] Granular graphite 4 (wt.%), fixed carbon content ≥ 95%, ash conten...

Embodiment 3

[0075] The formula description of the wind power generator spindle brake pad provided by the invention

[0076] Copper powder and tin powder 40wt.%, its particle size is ≤ 70 μm, copper powder purity ≥ 98%, wherein copper powder: tin powder = 10: 1;

[0077] Iron powder 20 (wt.%), the particle size is ≤70 μm, and the purity of iron powder is ≥98.5%;

[0078] Chopped steel fiber 10 (wt.%), its length is 2~5mm, and its diameter is 50~150μm;

[0079] Brass fiber 10 (wt.%), its length is 2.5~3.5mm, and its diameter is 100~200μm;

[0080] High alumina ceramic fiber 3 (wt.%), the length of which is 0.5-1.5 mm, and the diameter is 50-100 μm;

[0081] Aluminum oxide 2 (wt.%), the particle size of which is 70 μm to 200 μm;

[0082] Silica 3 (wt.%), the particle size of which is 70 μm to 200 μm;

[0083] Flake graphite 8 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and its particle size ≤ 70μm;

[0084] Granular graphite 4 (wt.%), fixed carbon content ≥ 95%, ash content ≤...

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Abstract

The invention relates to a metallic matrix spindle brake pad for a wind driven generator and a preparation method thereof. The material comprises iron powder, copper powder, tin powder, sulphur, short cut steel fiber, copper fiber, high alumina ceramic fiber, inorganic oxide, graphite, etc. The preparation method comprises: weighing the components of the material according to the formulation, stirring and mixing the components in a special dry-type mixer, and ensuring the fibers to be fully dispersed and even; pressing the mixture for molding at the normal temperature, then sintering at the certain pressure and temperature, and cooling along with a furnace; finally, machining to obtain the metallic matrix spindle brake pad. Compared with the common powder metallurgy brake pad, the friction material prepared by the method is added with metals and the ceramic fiber, so as to remarkably improve the mechanical properties of the material and the static friction torque; meanwhile, the product has the advantages of moderate and stable coefficient of dynamic friction, better wear resistance, low brake noise and less dual wear, can completely meet the requirement of the wind driven generator for high speed brake of a spindle, and realizes environmental protection in deed.

Description

technical field [0001] The invention relates to a brake pad, in particular to a brake pad used in a main shaft braking system of a wind power generator, and also relates to a preparation method of the brake pad. Background technique [0002] With the advancement of science and technology and the rapid development of the economy, human demand for electricity continues to expand. The use of coal, oil and other non-renewable energy sources for power generation is facing the dilemma of increasingly scarce resources, and it is not in line with the country's strategic decision for sustainable development. As a green and clean energy, wind energy not only conforms to the direction of national energy reform, but also is a renewable resource, which also has positive significance for environmental protection. In recent decades, it has been favored by countries all over the world, especially developed countries such as Europe, America and Japan. [0003] When wind power is used for p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02B22F1/00B22F3/16B22F7/08C22C49/14C22C101/00C22C111/00
Inventor 刘伯威黄伯云熊翔杨阳张利军
Owner CENT SOUTH UNIV
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