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A copper-based powder metallurgy pantograph sliding plate material for monorail vehicles and its preparation method

A pantograph sliding plate and powder metallurgy technology, which is applied in the field of copper-based powder metallurgy pantograph sliding plate materials for monorail vehicles, can solve the problems of large wear amount, unfavorable environmental protection and high friction coefficient

Active Publication Date: 2022-03-04
贵州新安航空机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material has a simple process, but has a high coefficient of friction, a large amount of wear, and contains lead, a toxic and harmful substance, which is not conducive to environmental protection.

Method used

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  • A copper-based powder metallurgy pantograph sliding plate material for monorail vehicles and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Put the powders of niobium oxide, zirconia, silicon carbide, and graphene into a three-dimensional mixer, mix them at 50°C for 3 hours, bake the powders at a pressure of 10Pa for 10 hours, cool down to 30°C, mix the powders with their mass 5 ~8 times of absolute ethanol was mixed, soaked for 50min under 500W ultrasonic vibration, and then the resulting mixture was dried at 3Pa, 20°C for 3h, and polyvinyl butyral, barium bicarbonate, Mix the starch evenly, press it with a granulator at 6 MPa to form granules with a particle size of 2mm, put the granules at 1200°C and sinter the air with an oxygen volume content of 23% for 15 hours, cool down the sintered ceramic granules, and use a ball mill to process them into Ultrafine powder, to obtain the conductive ceramics;

[0030] Reduct the copper powder in an ammonia decomposition atmosphere for 2.5 hours and then cool it to room temperature; dry the graphite, tin powder, nickel powder, chromium powder, molybdenum disulfide, a...

Embodiment 2

[0032]Put the powders of niobium oxide, zirconia, silicon carbide and graphene into a three-dimensional mixer, mix at 70°C for 5 hours, bake the powder at a pressure of 15Pa for 20 hours, cool down to 35°C, mix the powder with its mass of 8 times of absolute ethanol, soaked for 70min under 700W ultrasonic vibration, then dried the resulting mixture at 8Pa, 25°C for 5h, added polyvinyl butyral, barium bicarbonate, and starch to the dried product and mixed Evenly, use a granulator to press under 6MPa to form particles with a particle size of 3mm, place the particles at 1300°C and sinter in air with an oxygen volume content of 25% for 20 hours, cool down the sintered ceramic particles, and use a ball mill to process them into ultra-fine particles. powder, to obtain the conductive ceramics;

[0033] Reduct the copper powder in an ammonia decomposition atmosphere for 2.5 hours and then cool it to room temperature; dry the graphite, tin powder, nickel powder, chromium powder, molybd...

Embodiment 3

[0035] Put the powders of niobium oxide, zirconia, silicon carbide and graphene into a three-dimensional mixer, mix at 67°C for 4 hours, bake the powder at a pressure of 13Pa for 17 hours, cool down to 33°C, mix the powder with its mass of 8 times of absolute ethanol, soaked for 70min under 500W ultrasonic vibration, then dried the resulting mixture at 3Pa, 25°C for 3h, and added polyvinyl butyral, barium bicarbonate, and starch to the dried product to mix Evenly, use a granulator to press under 6MPa to form particles with a particle size of 3mm, place the particles at 1200°C, and sinter in air with an oxygen volume content of 25% for 15 hours, cool down the sintered ceramic particles, and use a ball mill to process them into ultrafine particles. powder, to obtain the conductive ceramics;

[0036] Copper powder is reduced in an ammonia decomposition atmosphere for 3 hours and then cooled to room temperature; graphite, tin powder, nickel powder, chromium powder, molybdenum disu...

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PUM

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Abstract

The invention relates to the technical field of sliding friction current collecting materials, in particular to a copper-based powder metallurgy pantograph sliding plate material for monorail vehicles. The components contained in the material and their mass percentages in the material are: 69-75% copper powder, 5-7% graphite, 4-6% tin powder, 4-9% nickel powder, 1-9% chromium powder 3%, molybdenum disulfide 1-3%, conductive ceramics 5-10%. The invention achieves better test results with a simpler process. The invention is characterized by short production cycle, simple process method and wide application prospect.

Description

technical field [0001] The invention relates to the technical field of sliding friction current collecting materials, in particular to a copper-based powder metallurgy pantograph sliding plate material for monorail vehicles. Background technique [0002] The pantograph-catenary system is an important part of the electric locomotive and the only effective way to provide power for the locomotive. The sliding plate is installed on the uppermost end of the pantograph and directly contacts with the catenary wire. During the sliding process, the electric energy is obtained from the contact wire, so as to guide and transmit power to the locomotive to maintain the normal operation of the locomotive. The slide plate and the wire constitute a pair of special friction pairs integrating mechanical and electrical coupling. In actual operation, there are mainly two types of wear, one is electrical arc wear and the other is mechanical wear. With the continuous improvement of the running s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C9/02C22C9/06C22C32/00C22C1/05C04B38/06C04B38/02C04B35/622C04B35/634C04B35/636C04B35/626B60L5/20
CPCC22C9/00C22C9/02C22C9/06C22C32/0084C22C32/0005C22C1/05C04B38/0645C04B38/067C04B38/02C04B35/622C04B35/6342C04B35/636C04B35/62695B60L5/20B60L5/205C04B2235/3244C04B2235/3826C04B2235/425C04B2235/3251C04B2235/3215
Inventor 范艳芳杨新德
Owner 贵州新安航空机械有限责任公司
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