Ferrum-based powder metallurgy antifriction material and preparation method thereof

An iron-based powder metallurgy and friction material technology, applied in the field of composite materials, can solve the problems of reduced brake service life, high wear rate, poor heat resistance coefficient, etc., and achieve fast transmission speed, high friction coefficient, and good seizure resistance Effect

Inactive Publication Date: 2015-03-04
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the iron base has slightly higher hardness, strength and friction coefficient than the copper base, the allowable working specific pressure and surface instantaneous temperature are also higher; but the heat resistance coefficient is poor and the wear rate is high
If the wear rate is too large, the service life of the brake will be reduced; if the heat resistance coefficient is low, it will easily cause the fricti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] An iron-based powder metallurgy friction material, made of the following raw materials in proportion by weight: 60 parts of iron powder, 6 parts of tin powder, 3 parts of silicon carbide powder, 3 parts of molybdenum dioxide powder, 4 parts of zirconium corundum powder, quartz 10 parts of sand powder, 1 part of zirconia powder, 2 parts of cobalt powder, 2 parts of alumina powder, 2 parts of potassium feldspar powder, and 1 part of copper powder.

[0022] Iron powder is 350 mesh, tin powder is 300 mesh, zirconia powder is 250 mesh, cobalt powder is 300 mesh, alumina powder is 300 mesh and copper powder is 300 mesh.

[0023] Silicon carbide powder, molybdenum dioxide powder, zirconium corundum powder, quartz sand powder and potassium feldspar powder are all 60 mesh.

[0024] The preparation method is as follows:

[0025] The first step is batching and mixing. Weigh the raw materials according to the ratio, and mix the powders of each component evenly; the second step is ...

Embodiment 2

[0028] An iron-based powder metallurgy friction material, made of the following raw materials in proportion by weight: 61 parts of iron powder, 7 parts of tin powder, 4 parts of silicon carbide powder, 4 parts of molybdenum dioxide powder, 5 parts of zirconium corundum powder, quartz 11 parts of sand powder, 2 parts of zirconia powder, 3 parts of cobalt powder, 3 parts of alumina powder, 3 parts of potassium feldspar powder, and 2 parts of copper powder.

[0029] Iron powder is 350 mesh, tin powder is 300 mesh, zirconia powder is 250 mesh, cobalt powder is 300 mesh, alumina powder is 300 mesh and copper powder is 300 mesh.

[0030] Silicon carbide powder, molybdenum dioxide powder, zirconium corundum powder, quartz sand powder and potassium feldspar powder are all 70 mesh.

[0031] The preparation method is as follows:

[0032] The first step is batching and mixing. Weigh the raw materials according to the ratio, and mix the powders of each component evenly; the second step i...

Embodiment 3

[0035]An iron-based powder metallurgy friction material, made of the following raw materials in proportion by weight: 64 parts of iron powder, 6-10 parts of tin powder, 6 parts of silicon carbide powder, 6 parts of molybdenum dioxide powder, and 7 parts of zirconium corundum powder , 14 parts of quartz sand powder, 4 parts of zirconia powder, 5 parts of cobalt powder, 5 parts of alumina powder, 5 parts of potassium feldspar powder, and 4 parts of copper powder.

[0036] Iron powder is 350 mesh, tin powder is 300 mesh, zirconia powder is 250 mesh, cobalt powder is 300 mesh, alumina powder is 300 mesh and copper powder is 300 mesh.

[0037] Silicon carbide powder, molybdenum dioxide powder, zirconium corundum powder, quartz sand powder and potassium feldspar powder are all 80 mesh.

[0038] The preparation method is as follows:

[0039] The first step is batching and mixing, weighing the raw materials according to the ratio, and mixing the powders of each component evenly; the ...

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Abstract

The invention discloses a ferrum-based powder metallurgy antifriction material and a preparation method thereof. The material is prepared from the following raw materials in part by weight: 60 to 64 parts of iron powder, 6 to 10 parts of tin powder, 3 to 6 parts of carborundum powder, 3 to 6 parts of molybdenum dioxide powder, 4 to 7 parts of zirconium corundum powder, 10 to 14 parts of quartz sand powder, 1 to 4 parts of zirconium dioxide powder, 2 to 5 parts of cobalt powder, 2 to 5 parts of alumina powder, 2 to 5 parts of feldspar powder and 1 to 4 parts of copper powder. The preparation method comprises the following steps of preparing and mixing the raw materials, pressing for forming, sintering and cooling. The ferrum-based powder metallurgy antifriction material prepared by the method has a high friction coefficient, can quickly absorb kinetic energy and brake, is high in transmission speed and low in abrasion, is high in strength, high temperature resistant and good in thermal conductivity, and is good in anti-seizure property, corrosion resistant, and slightly influenced by grease and damp.

Description

technical field [0001] The invention relates to a composite material, in particular to an iron-based powder metallurgy friction material and a preparation method thereof. Background technique [0002] Powder metallurgy is an industrial technology for producing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as raw material, forming and sintering to produce metal materials, composite materials and various types of products. Powder metallurgy has unique chemical composition and mechanical and physical properties, which cannot be obtained by traditional casting methods. The use of powder metallurgy technology can directly make porous, semi-dense or fully dense materials and products, such as oil bearings, gears, cams, guide rods, knives, etc., which is a less cutting process. Compared with traditional melting and casting methods, powder metallurgy has the following characteristics: [0003] (1) Powder metallurgy technology can minimize ...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/16C22C33/02C22C38/16
Inventor 刘莉王爽邱晶
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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