Copper-based powder metallurgy friction material for high-speed train braking and preparation method thereof

A technology of powder metallurgy and high-speed trains, applied in the field of powder metallurgy materials, can solve the problems that cast iron and synthetic materials cannot meet the braking requirements of high-speed trains, and achieve the effects of good market prospects, excellent quality, and good comprehensive mechanical properties

Active Publication Date: 2015-11-18
GUANGXI UNIV FOR NATITIES
View PDF7 Cites 51 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The brake pads in the braking system of high-speed trains are one of the key components for the safe operation of high-speed trains. During the braking process of high-speed trains, the highest instantaneous temperature generated by th

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Example 1

[0026] A copper-based powder metallurgy friction material for high-speed train braking, including the following raw materials in weight percentage: copper 50%, iron 15%, chromium 4%, zircon 8%, alumina 5%, tin 3%, manganese 3 %, graphite 6%, molybdenum disulfide 3%, ferrochrome 3%.

[0027] The method for preparing the above-mentioned copper-based powder metallurgy friction material for high-speed train braking includes the following steps:

[0028] (1) Ingredients: Weigh the powder raw materials according to the above weight percentage

[0029] (2) Mixing: mix 0.5% of the total weight of raw materials with kerosene, and mix the raw materials evenly through a V-type mixer;

[0030] (3) Pressing: the uniformly stirred raw material mixture is pressed into compacts under 250Mpa;

[0031] (4) Sintering: The green compact is sintered under the protection of hydrogen at a pressure of 1.5Mpa and a temperature of 850°C for 2h, so that the green compact is metallurgically comb...

Example Embodiment

[0033] Example 2

[0034] A copper-based powder metallurgy friction material for high-speed train brakes, including the following raw materials in weight percentage: copper 45%, iron 17%, chromium 5%, zircon 6%, alumina 4%, tin 4%, manganese 4 %, graphite 7%, molybdenum disulfide 4%, ferrochrome 4%.

[0035] The method for preparing the above-mentioned copper-based powder metallurgy friction material for high-speed train braking includes the following steps:

[0036] (1) Ingredients: Weigh the powder raw materials according to the above weight percentage

[0037] (2) Mixing: 0.3% of the total weight of raw materials is mixed with kerosene, and the raw materials are mixed uniformly through a V-type mixer;

[0038] (3) Pressing: the uniformly stirred raw material mixture is pressed into a compact under 400Mpa;

[0039] (4) Sintering: the green compact is sintered under the protection of nitrogen at a pressure of 4Mpa and a temperature of 900°C for 4 hours, so that the green compact is met...

Example Embodiment

[0041] Example 3

[0042] A copper-based powder metallurgy friction material for high-speed train braking, including the following raw materials in weight percentages: 60% copper, 7% iron, 3% chromium, 6% zircon, 3% alumina, 4% tin, and manganese 2 %, graphite 8%, molybdenum disulfide 2%, ferrochrome 5%.

[0043] The method for preparing the above-mentioned copper-based powder metallurgy friction material for high-speed train braking includes the following steps:

[0044] (1) Ingredients: Weigh the powder raw materials according to the above weight percentage

[0045] (2) Mixing: Mix 0.8% of the total weight of raw materials with kerosene, and mix the raw materials evenly through a V-type mixer;

[0046] (3) Pressing: the uniformly stirred raw material mixture is pressed into compacts at 550Mpa;

[0047] (4) Sintering: under the protection of hydrogen and nitrogen, the compact is pressurized and sintered at a pressure of 3Mpa and a temperature of 950°C for 2h, so that the compact is met...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a copper-based powder metallurgy friction material for high-speed train braking. The copper-based powder metallurgy friction material comprises, by weight percentage, 40%-60% of copper, 7%-20% of iron, 3%-5% of chromium, 5%-10% of zirconite, 3%-6% of aluminum oxide, 2%-5% of tin, 2%-4% of manganese, 5%-10% of graphite, 2%-5% of molybdenum disulfide and 1%-5% of ferrochromium. A preparation method of the copper-based powder metallurgy friction material comprises the steps of proportioning, mixing, pressing, sintering and the like. The copper-based powder metallurgy friction material has excellent friction performance and stable and safe braking performance, and can meet the braking requirement of a 380 km/h high-speed train. The preparation method is simple and environmentally friendly, and has a good market prospect.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy materials, in particular to a copper-based powder metallurgy friction material for high-speed train braking and a preparation method thereof. Background technique [0002] High-speed railway is an emerging strategic industry that is prioritized in the 12th Five-Year Plan and the 13th Five-Year Plan. After more than 20 years of development in my country's high-speed train technology research and construction, through technology introduction, digestion, absorption and innovation, we have successively mastered the manufacturing technology of high-speed trains with speeds of 200, 250 and 380km / h. [0003] The brake pads in the braking system of high-speed trains are one of the key components for the safe operation of high-speed trains. During the braking process of high-speed trains, the highest instantaneous temperature generated by the brake pads during braking can reach 600-1000°C. The f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22C30/04C22C9/00C22C1/05B22F1/00B22F7/06
Inventor 尹彩流王秀飞文国富蓝奇
Owner GUANGXI UNIV FOR NATITIES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap