Metal-based yaw brake block for wind-powdered generator and manufacture method thereof

A technology for wind turbines and brake pads, applied in the field of brake pads, can solve problems such as strategic decision-making that does not conform to national sustainable development, lack of resources, etc., and achieve the effects of improving friction stability, improving mechanical properties, and reducing wear rate.

Inactive Publication Date: 2010-08-11
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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  • Metal-based yaw brake block for wind-powdered generator and manufacture method thereof
  • Metal-based yaw brake block for wind-powdered generator and manufacture method thereof
  • Metal-based yaw brake block for wind-powdered generator and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The formula description of wind power generator yaw brake pad provided by the invention

[0037] Copper powder 20 (wt.%), particle size ≤70μm, copper powder purity ≥98%,

[0038] Tin powder 2 (wt.%), the particle size is ≤70μm,

[0039] Iron powder 50(wt.%), particle size ≤70μm, iron powder purity ≥98.5%,

[0040] Chopped steel fiber 6 (wt.%), its length is 2~5mm, and its diameter is 50~150μm,

[0041] Brass fiber 5 (wt.%), its length is 2.5~3.5mm, and diameter is 100~200μm,

[0042] High alumina ceramic fiber 3 (wt.%), its length is 0.5~1.5mm, and its diameter is 50~100μm,

[0043] Sulfur 1 (wt.%), the particle size of which is ≤200μm;

[0044] Aluminum oxide 2 (wt.%), the particle size of which is 70 μm to 200 μm;

[0045] Silica 3 (wt.%), the particle size of which is 70 μm to 200 μm;

[0046] Flake graphite 8 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and particle size ≤ 70 μm.

[0047] In this formula system, the friction material uses iron and c...

Embodiment 2

[0055] The formula description of wind power generator yaw brake pad provided by the invention

[0056] Copper powder and tin powder 40%, the particle size is ≤70μm, copper powder purity ≥98%, wherein copper powder: tin powder = 10:1;

[0057] Iron powder 30 (wt.%), particle size ≤70μm, iron powder purity ≥98.5%,

[0058] Chopped steel fiber 5 (wt.%), its length is 2~5mm, and diameter is 50~150μm,

[0059] Brass fiber 10 (wt.%), its length is 2.5~3.5mm, and diameter is 100~200μm,

[0060] High alumina ceramic fiber 4 (wt.%), its length is 0.5~1.5mm, and its diameter is 50~100μm,

[0061] Alumina 3 (wt.%), the particle size of which is 70 μm to 200 μm;

[0062] Silica 3 (wt.%), the particle size of which is 70 μm to 200 μm;

[0063] Flake graphite 5 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and particle size ≤ 70 μm.

[0064] In this formula system, the friction material uses iron and copper as the matrix, alumina and silicon dioxide as friction enhancers, tin p...

Embodiment 3

[0072] The formula description of wind power generator yaw brake pad provided by the invention

[0073] Copper powder 20 (wt.%), particle size ≤70μm, copper powder purity ≥98%,

[0074] Tin powder 2 (wt.%), the particle size is ≤70μm,

[0075] Iron powder 30 (wt.%), particle size ≤70μm, iron powder purity ≥98.5%,

[0076] Chopped steel fiber 10 (wt.%), its length is 2~5mm, and diameter is 50~150μm,

[0077] Brass fiber 5 (wt.%), its length is 2.5~3.5mm, and diameter is 100~200μm,

[0078] High alumina ceramic fiber 10 (wt.%), its length is 0.5~1.5mm, and its diameter is 50~100μm,

[0079] Sulfur 5 (wt.%), the particle size of which is ≤200 μm;

[0080] Aluminum oxide 4 (wt.%), the particle size of which is 70 μm to 200 μm;

[0081] Silica 4 (wt.%), the particle size of which is 70 μm to 200 μm;

[0082] Flake graphite 10 (wt.%), fixed carbon content ≥ 90%, ash content ≤ 10%, and particle size ≤ 70 μm.

[0083] In this formula system, the friction material uses iron and ...

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Abstract

The invention relates to a metal-based yaw brake block for a wind-powdered generator and a manufacture method thereof. The materials comprise iron powder, copper powder, tin powder, sulfur, chopped steel fiber, copper fiber, high-alumina ceramic fiber, inorganic oxides, graphite, and the like. The manufacture method comprises the following steps of: firstly, weighting all the component materials according to a prescription; stirring and mixing in a special dry-type mixer to fully and evenly disperse all the fibers; pressing and molding at room temperature; then, sintering at a certain pressure and temperature; cooling in a furnace; and finally, mechanically processing to obtain a material of the invention. Compared with a common metallurgic brake block, the friction material prepared by the method remarkably improves the mechanical properties and the static friction torque of the materials by adding metal and ceramic fibers. Meanwhile, the product has the advantages of suitable and stable dynamic friction coefficient, better wear resistance, smaller dual wear and low manufacture cost and can fully satisfy the yaw brake requirement of a wind-powdered generator.

Description

technical field [0001] The invention relates to a brake pad, in particular to a metal-based brake pad used in a yaw 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D69/02C22C49/08C22C49/14C22C47/14
Inventor 刘伯威黄伯云熊翔杨阳张利军
Owner CENT SOUTH UNIV
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