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Production process of metal based sintered friction plate

A manufacturing process and metal-based technology, applied in the field of sintered friction plate manufacturing process, can solve the problems of long manufacturing time, complexity, and increased manufacturing cost, and achieve the effects of short sintering time, good dimensional accuracy, and a large range of molding pressure adjustment.

Inactive Publication Date: 2007-07-11
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process can increase the density of the product, allowing the product to have a more complex shape and better dimensional accuracy. However, since three heating processes are used in the process, the manufacturing time is long and the manufacturing cost is significantly increased.

Method used

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  • Production process of metal based sintered friction plate
  • Production process of metal based sintered friction plate
  • Production process of metal based sintered friction plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The weight percentage of each component is as follows: copper powder 54%, tin powder 6%, aluminum powder 3%, iron powder 12%, Al 2 o 3 6%, SiO 2 9%, graphite 10%. First mix the metal powder for 3-5min, then add Al 2 o 3 and SiO 2 Mix for 3-5 minutes, and finally add graphite and 0.5% kerosene by weight of the mixed powder, and mix for 5-10 minutes.

[0024] Put the mixed powder with suitable weight into the mold, press it under the pressure of 500MPa for 5-10 seconds, and take it out to become a cold pressed blank.

[0025] Put the cold pressing blank into the hot molding die 3, start the vacuum system, when the vacuum reaches 70mmHg, apply 3MPa pressure on the blank through the upper and lower punches 4 and 5, at the same time, start the heating current 6, and the heating time is about 2-3min , the temperature of the blank reaches 800°C, a pressure of 50 MPa is applied to the blank, the heat is kept for 2 minutes, and it is cooled to 100°C with the furnace to be ...

Embodiment 2

[0032] The weight percentage of each component is as follows: iron powder 60%, copper powder 10%, tin powder 5%, aluminum powder 5%, Al 2 o 3 5%, SiO 2 5%, graphite 10%. First mix the metal powder for 3-5min, then add Al 2 o 3 and SiO 2 Mix for 3-5 minutes, and finally add graphite and 0.5% kerosene by weight of the mixed powder, and mix for 5-10 minutes.

[0033] Put the mixed powder with suitable weight into the mold, press it under the pressure of 600MPa for 5-10 seconds, and take it out to become a cold pressed blank.

[0034] Put the cold pressing blank into the hot molding die 3, start the vacuum system, when the vacuum reaches 70mmHg, apply 5MPa pressure on the blank through the upper and lower punches 4 and 5, at the same time, start the heating current 6, and the heating time is about 2-3min , the temperature of the blank reaches 1000°C, a pressure of 60 MPa is applied to the blank, the heat is kept for 2 minutes, and it is cooled to 100°C with the furnace to be...

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Abstract

The invention relates to a metal-base sinter abrasion blade production, wherein said blade uses copper, iron, etc as base, with abrasion adjust components as rigid particles and graphite particles, via powder mixing, cold compression, current heating dieing, to be processed into abrasion block. The invention uses current heating dieing process to improve the density, to adjust the abrasion property and reduce the abrasion. And the inventive method has high efficiency, low cost and high accuracy.

Description

Technical field: [0001] The invention belongs to the technical field of friction material manufacturing, in particular to a manufacturing process of sintered friction plates. Background technique: [0002] Metal-based sintered friction materials have become the key materials for manufacturing clutches and brakes due to their high strength, wear resistance, good thermal conductivity, high friction coefficient, and stable friction coefficient. They are widely used in automobiles, motorcycles, and trains. , aircraft and other means of transportation and oil drilling, wind power and other machinery. In the field of train vehicle manufacturing, it is used to manufacture brake shoes and brake pads. This type of material is based on metal and contains uniformly distributed hard particles and lubricating particles. The content of the metal matrix plays a leading role in the strength and toughness of the material. Both the hard particles and the lubricating particles are brittle ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16C22C1/04C09K3/14
Inventor 高飞宋宝韫符蓉
Owner DALIAN JIAOTONG UNIVERSITY
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