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A powder metallurgy wear-resistant brake pad and its preparation method

A powder metallurgy and brake pad technology, applied in the field of powder metallurgy wear-resistant brake pads and their preparation, can solve the problems of easy agglomeration of alloy powder, and achieve the effects of not easy separation, enhanced wear resistance and strength, and tight bonding

Inactive Publication Date: 2019-04-05
天津工业职业学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applying TiC powder to the brake pad will effectively improve the wear resistance of the brake pad, but the TiC powder is easy to agglomerate in the alloy powder. Therefore, how to evenly disperse the TiC powder in the alloy powder is currently to be solved. technical problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A method for preparing a powder metallurgy wear-resistant brake pad, comprising the following steps:

[0041] (1) Ingredients

[0042] According to the designed powder metallurgy component distribution ratio, respectively weigh Cu powder, Fe powder, Al powder, Cr powder and Mo powder and place them in a grinder for grinding to obtain a pre-activated alloy powder with a particle size of 2 μm, which is then subjected to ultrasonic and grinding First drop 1 / 3 of the total volume of the mixed solution of tetrabutyl titanate and titanium tetrachloride and the colloidal graphite solution, and then drop the remaining solutions of the two under the conditions of ultrasound, pulsed magnetic field and grinding , the drop rate when adding the mixed solution of tetrabutyl titanate and titanium tetrachloride, and the mixed solution of colloidal graphite solution is 1S / drop, and the time for falling into the preactivated alloy powder after dropping is 1S. The volume of the drop liqu...

Embodiment 2

[0053] A method for preparing a powder metallurgy wear-resistant brake pad, comprising the following steps:

[0054] (1) Ingredients

[0055] According to the designed powder metallurgy component distribution ratio, respectively weigh Cu powder, Fe powder, Al powder, Cr powder and Mo powder and place them in a grinder for grinding to obtain a pre-activated alloy powder with a particle size of 10 μm. 2 / 3 of the total volume of the mixed solution of tetrabutyl titanate and titanium tetrachloride and the colloidal graphite solution, and then drop the remaining solutions of the two under the conditions of ultrasound, pulsed magnetic field and grinding. , the drop rate when adding the mixed solution of tetrabutyl titanate and titanium tetrachloride, and the mixed solution of colloidal graphite solution is 1S / drop, and the time for falling into the preactivated alloy powder after dropping is 1.5S. The volume of each drop of liquid is 0.3mL; then under normal magnetic field, ultraso...

Embodiment 3

[0067] A method for preparing a powder metallurgy wear-resistant brake pad, comprising the following steps:

[0068] (1) Ingredients

[0069] According to the designed powder metallurgy component distribution ratio, respectively weigh Cu powder, Fe powder, Al powder, Cr powder and Mo powder and place them in a grinder for grinding to obtain a pre-activated alloy powder with a particle size of 5 μm, which is then ultrasonically and ground Under the conditions, first drop 3 / 4 of the total volume of the mixed solution of tetrabutyl titanate and titanium tetrachloride, and the colloidal graphite solution, and then drop the remaining solutions of the two under the conditions of ultrasound, pulsed magnetic field and grinding. , the drop rate when adding the mixed solution of tetrabutyl titanate and titanium tetrachloride, and the mixed solution of colloidal graphite solution is 1S / drop, and the time for falling into the preactivated alloy powder after dropping is 1.1S. The volume o...

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Abstract

The invention relates to a powder metallurgy wear-resisting brake block. The powder metallurgy wear-resisting brake block is prepared through material mixing, molding and sintering after even mixing of matter in component according to parts by weight, in particular, Cu powder is 20 parts to 30 parts, Fe powder is 40 parts to 65 parts, the Al powder is 0.5 part to 1 part, the Cr powder is 2 parts to 5 parts, the total part number of tetrabutyl titanate and titanium tetrachloride in a mixed solution of the tetrabutyl titanate and the titanium tetrachloride is 2 to 5, colloidal graphite in a colloidal graphite solution is 10 parts to 25 parts, and Mo powder 2.3 parts to 3.6 parts; and the colloidal graphite solution and the mixed solution of the tetrabutyl titanate and the titanium tetrachloride are mixed to be dropped into above ground pre-excitation alloy powder to be evenly mixed. According to the powder metallurgy wear-resisting brake block, a graphite and titanium dioxide mixture isprepared through the colloidal graphite and a titanium source precursor, then high temperature in situ synthesis is carried out to synthesize TiC powder, the TiC powder can be distributed into the alloy powder very evenly, and the wear-resisting and heat-resisting performance of the brake block are effectively improved.

Description

technical field [0001] The invention belongs to the field of powder metallurgy, and in particular relates to a powder metallurgy wear-resistant brake pad and a preparation method thereof. Background technique [0002] Brake pads are also called brake pads. In the braking system of a car, the brake pads are the most critical safety parts. The brake pads play a decisive role in the quality of all braking effects, so good brake pads are the protectors of people and cars. [0003] Brake lining is generally composed of steel plate, adhesive heat insulation layer and friction block. The steel plate should be painted to prevent rust. During the painting process, SMT-4 furnace temperature tracker is used to detect the temperature distribution of the painting process to ensure quality. The heat insulation layer is composed of materials that do not conduct heat, and the purpose is heat insulation. The friction block is composed of friction material and adhesive, which is squeezed o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D69/02B22F3/02B22F3/10C22C1/05C22C30/02C22C33/02C22C38/06C22C38/20C22C38/22
Inventor 谭起兵刘玉英
Owner 天津工业职业学院
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