Metal-based powder metallurgy brake lining material and preparation methods thereof

A powder metallurgy, brake pad technology, applied in friction linings, mechanical equipment, etc., can solve the problems of increasing production costs, limiting the selection range of ceramic particles, reducing and other problems, to improve service life, conducive to environmental protection, strength high density effect

Inactive Publication Date: 2010-12-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome that the final strength of the friction material tends to decrease with the addition of the amount of ceramic particles by directly adding ceramic particles in the traditional method, and in order to ensure the strength of the friction material, a higher sintering temperature and a certain The sintering pressure increases the production cost and limits the selection range of the ceramic particle content

Method used

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  • Metal-based powder metallurgy brake lining material and preparation methods thereof
  • Metal-based powder metallurgy brake lining material and preparation methods thereof
  • Metal-based powder metallurgy brake lining material and preparation methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] 1. The content of each component of the brake pad material according to the present invention is: Cu powder: 54%, Sn powder: 6%, graphite: 21%, Fe powder: 3%, Ti powder: 8%, Al 2 o 3 Powder: 6%, Ni powder: 1% and Cr powder: 1%.

[0069] 2. See figure 1 , mechanically activate Ti powder and graphite with a weight ratio of 4:1, that is, 8% Ti powder and 2% graphite, in a horizontal planetary ball mill at a speed of 500 rpm and an activation time of 10 hours. Ti-C mechanical activation powder: 10%. Shown in the figure is the typical X-ray diffraction pattern of the Ti-C mechanically activated powder.

[0070] 3. See figure 2 , mechanical alloying of Cu powder and Sn powder with a weight ratio of 9:1, that is, 54% Cu powder and 6% Sn powder, in a horizontal planetary ball mill with a speed of 500 rpm and an activation time of 10 hours , made of Cu-Sn mechanical alloy powder: 60%. Shown in the figure is the typical X-ray diffraction pattern of the produced Cu-Sn mech...

Embodiment 2

[0077] 1. The content of each component of the brake pad material according to the present invention is: Cu powder: 54%, Sn powder: 6%, graphite: 21%, Fe powder: 3%, Ti powder: 8%, al 2 o 3 Powder: 6%, Ni powder: 1% and Cr powder: 1%.

[0078] 2. Mechanically activate Ti powder and graphite with a weight ratio of 8:1, that is, 8% Ti powder and 1% graphite, in a horizontal planetary ball mill at a speed of 500 rpm and an activation time of 10 hours. Form Ti-C mechanical activation powder: 9%.

[0079] 3. Carry out mechanical alloying in a horizontal planetary ball mill with Cu powder and Sn powder with a weight ratio of 9:1, that is, 54% Cu powder and 6% Sn powder, the speed is 500 rpm, and the activation time is 10 Hours, made Cu-Sn mechanical alloy powder: 60%.

[0080] After making 9% Ti-C mechanical activation powder and 60% Cu-Sn mechanical alloy powder, the content of each component of the brake pad material according to the present invention becomes: Cu-Sn mechanical...

Embodiment 3

[0086] 1. The content of each component of the brake pad material according to the present invention is: Cu powder: 54%, Sn powder: 6%, graphite: 21%, Fe powder: 3%, Ti powder: 8%, al 2 o 3 Powder: 6%, Ni powder: 1% and Cr powder: 1%.

[0087] 2. Carry out mechanical activation in a horizontal planetary ball mill with Ti powder and graphite that are 8% Ti powder and 1.33% graphite in a weight ratio of 6:1, the speed is 500 rpm, and the activation time is 10 hours. Form Ti-C mechanical activation powder: 9.33%.

[0088] 3. Carry out mechanical alloying in a horizontal planetary ball mill with Cu powder and Sn powder with a weight ratio of 9:1, that is, 54% Cu powder and 6% Sn powder, the speed is 500 rpm, and the activation time is 10 Hours, made Cu-Sn mechanical alloy powder: 60%.

[0089] After making 9.33% Ti-C mechanical activation powder and 60% Cu-Sn mechanical alloy powder, the brake pad material according to the present invention has the content of each component by...

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Abstract

The invention discloses a metal-based powder metallurgy brake lining material and preparation methods thereof. The invention aims to solve the problems that the strength of a material is reduced along with the adding of ceramic particles when the powder metallurgy brake lining material is produced by the prior art and the like. The material comprises the following components in percentage by weight: 10 to 80 percent of Cu-Sn mechanical alloy powder, 1.25 to 15 percent of Ti-C mechanical activated powder, 2 to 65 percent of Fe powder, 0 to 10 percent of Ni powder, 0 to 12 percent of Cr powder,2 to 8 percent of Al2O3 powder, and 7.75 to 23 percent of graphite, wherein the Cu-Sn mechanical alloy powder is prepared from Sn powder and Cu powder which contains 6 to 10 percent of Sn powder by mechanical alloying beforehand; and the Ti-C mechanical activated powder is prepared from Ti powder and C powder according to the ratio of 2:1-8:1 through mechanical activation beforehand, and forms TiC during the sintering. The invention also provides two preparation methods which combine the mechanical activation and the mechanical alloying with the prior powder metallurgy or discharge plasma sintering method.

Description

technical field [0001] The present invention relates to a kind of friction material, especially the friction material used for manufacturing high-speed train brake pads, more specifically, the present invention relates to a metal-based ceramic reinforced powder metallurgy brake pad material and the preparation of such metal-based ceramics Method for ceramic strengthening powder metallurgy brake pad material. Background technique [0002] Metal-based powder metallurgy materials, especially iron and copper-based powder metallurgy materials, are widely used as important materials for various friction and wear parts, especially copper and iron-based ceramic-reinforced powder metallurgy materials, due to their high strength, wear resistance, and friction coefficient Stability, good thermal conductivity and other characteristics make it a key material for the manufacture of clutches and brakes. It is widely used in the manufacturing of automobiles, motorcycles, trains, airplanes a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C1/05C22C1/10C22C33/02F16D69/02
Inventor 曹占义庄健刘勇兵
Owner JILIN UNIV
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