CN109777992A - A kind of copper-based composite friction material of high abrasion and preparation method thereof - Google Patents
A kind of copper-based composite friction material of high abrasion and preparation method thereof Download PDFInfo
- Publication number
- CN109777992A CN109777992A CN201711112553.6A CN201711112553A CN109777992A CN 109777992 A CN109777992 A CN 109777992A CN 201711112553 A CN201711112553 A CN 201711112553A CN 109777992 A CN109777992 A CN 109777992A
- Authority
- CN
- China
- Prior art keywords
- powder
- copper
- mos2
- friction material
- zta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Powder Metallurgy (AREA)
- Braking Arrangements (AREA)
Abstract
Copper-based composite friction material of the high abrasion that the present invention relates to a kind of suitable for manufacturing railway vehicle brake brake lining and preparation method thereof, belongs to friction materials technology field.Its raw material includes Cu, Fe, Cr, ZTA composite ceramics, MoS2 and powdered graphite, and weight percent constitutes as follows: Cu:45~60%, Fe:15~25%, Cr:5~10%, ZTA composite ceramics: 2~10%, MoS2:0.5~2%, graphite: 10~20%.The present invention shapes the copper-based wiping composite material of high abrasion using powder metallurgy process high-vacuum sintering, the material has intensity height, hardness big, under high speed, hot conditions, have many advantages, such as that coefficient of friction is high, antiwear property is strong, stability is good, thermal conductivity is high, the service life is long, is suitable for manufacturing bullet train brake pad.
Description
Technical field
The invention belongs to friction materials technology fields, are specifically related to a kind of suitable for manufacturing railway vehicle brake brake lining
Copper-based composite friction material of high abrasion and preparation method thereof.
Background technique
Copper-based composite friction material has many advantages, such as that higher-strength, wearability are good, thermal conductivity is high, is manufacture brake apparatus
Important materials are widely applied in the transport facilitys such as bullet train, aircraft, automobile.It is fast with electric railway
Speed development, to train braking performance, more stringent requirements are proposed, especially higher and higher to the performance requirement of friction material, not only
High-intensitive, high-termal conductivity is required, while requiring have sufficiently high coefficient of friction, high-temperature stability, excellent wearability etc.
Feature.
It is in the prior art the antiwear property for improving the copper-based composite friction material of train, is usually added into silicon carbide, oxygen
Change the single phase ceramic materials such as zirconium, aluminium oxide, since these types of single phase ceramic material has high fusing point, hardness and chemical stability
Etc. characteristics, wide application is obtained in friction material.But the performances such as high rigidity of single phase ceramic material cannot be guaranteed material
With good wearability.To guarantee low wear rate in many practical friction environments, also require ceramic material with higher
Fracture toughness.For single phase ceramic material since brittleness is big, fracture toughness is low, and ceramic particle, which is easy to happen, to fracture and peel off, and increases
Abrasion loss reduces the braking effect of brake block, in the case of cannot meeting actual requirement, especially high-speed train braking well
Requirement.Therefore, single phase ceramic material is still limited or unstable to the wear-resisting property for improving copper-based composite friction material,
It also needs further to improve.Problem above significantly limit the further fast-developing of copper-based composite friction material and
It promotes and applies.
Summary of the invention
It is a kind of multiple containing Zirconia reinforced alumina it is an object of the invention to there are problem and shortage, be provided for above-mentioned
Close ceramics wear-resisting property it is superior, stability is good, thermal conductivity is good, the copper-based composite friction material of high abrasion with long service life and its
Preparation method.
The technical scheme of the present invention is realized as follows:
The copper-based composite friction material of high abrasion of the present invention, its main feature is that mixing system by the ingredient of following weight percent
At: Cu powder: 45~60%, Fe powder: 15~25%, Cr powder: 5~10%, ZTA composite ceramic: 2~10%, MoS2 powder: 0.5~2%,
Graphite powder: 10~20%, wherein the purity of Cu powder, Fe powder, Cr powder is greater than 99.0%, and granularity is less than 75 μm；ZTA composite ceramic
Purity is greater than 99.0%, and granularity is 75~150 μm；The purity of MoS2 powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm.
Further, the more preferable weight percent of above-mentioned each constituent are as follows: Cu powder: 48~53%, Fe powder: 18~22%,
Cr powder: 6~8%, ZTA composite ceramic: 4~8%, MoS2 powder: 0.8~1.8%, graphite powder: 12~18%.
Further, the optimum weight percentage of above-mentioned each constituent are as follows: Cu powder: 50%, Fe powder: 20%, Cr powder:
7%, ZTA composite ceramic: 7%, MoS2 powder: 1%, graphite powder: 15%.
The preparation method of the copper-based composite friction material of high abrasion of the present invention is prepared by the way of powder metallurgy
The copper-based composite friction material of the high abrasion, its main feature is that the following steps are included:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS2 powder and graphite powder；
2) mixing: the material prepared is mixed through high-speed mixer to uniform；
3) it suppresses: uniformly mixed raw material being put into mold and be pressed into green compact, pressure is 650~850MPa；
4) vacuum pressed is sintered: green compact being fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree is
0.1~10Pa, sintering temperature are 750~900 DEG C, and application pressure is 1~3MPa, soaking time 2~4 hours, obtains high abrasion
Copper-based composite friction material.
Compared with prior art, the present invention having the advantage that
1, compared with one-component ceramic being added in copper-based composite friction material with tradition, the present invention adds in copper-based composite friction material
Enter that toughness is more preferable, the higher ZTA composite ceramics of fracture toughness, has been conducive to further increase wear-resisting property, to improve brake
Efficiency；
2, preparation process of the present invention is simple, operation is easier, is conducive to promote and apply；
3, using the copper-based composite friction material of the invention obtained, coefficient of friction is high, abrasion is small, stability is high, thermally conductive at high speeds
Property good, long service life, suitable for manufacture railway vehicle brake brake lining.
Specific embodiment
The copper-based composite friction material of high abrasion of the present invention, is mixed: Cu by the ingredient of following weight percent
Powder: 45~60%, Fe powder: 15~25%, Cr powder: 5~10%, ZTA composite ceramic: 2~10%, MoS2 powder: 0.5~2%, graphite
Powder: 10~20%, wherein the purity of Cu powder, Fe powder, Cr powder is greater than 99.0%, and granularity is less than 75 μm；The purity of ZTA composite ceramic
Greater than 99.0%, granularity is 75~150 μm；The purity of MoS2 powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm.Further
Ground, the more preferable weight percent of each constituent are as follows: Cu powder: 48~53%, Fe powder: 18~22%, Cr powder: 6~8%, ZTA
Composite ceramic: 4~8%, MoS2 powder: 0.8~1.8%, graphite powder: 12~18%.Further, each constituent
Optimum weight percentage are as follows: Cu powder: 50%, Fe powder: 20%, Cr powder: 7%, ZTA composite ceramic: 7%, MoS2 powder: 1%, graphite powder:
15%。
The preparation method of the copper-based composite friction material of high abrasion of the present invention, this method is by the way of powder metallurgy
Prepare the copper-based composite friction material of above-mentioned high abrasion comprising following steps:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS2 powder and graphite powder；
2) mixing: the material prepared is mixed through high-speed mixer to uniform；
3) it suppresses: uniformly mixed raw material being put into mold and be pressed into green compact, pressure is 650~850MPa；
4) vacuum pressed is sintered: green compact being fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree is
0.1~10Pa, sintering temperature are 750~900 DEG C, and application pressure is 1~3MPa, soaking time 2~4 hours, obtains high abrasion
Copper-based composite friction material.
Embodiment 1:
A kind of copper-based composite friction material of high abrasion is prepared, weight percentage of each component is as follows: Cu powder: 45%, Fe powder: 25%,
Cr powder: 5%, ZTA composite ceramic: 10%, MoS2 powder: 2%, graphite powder: 13%.Its preparation step is as follows: 1) weighing: by weight hundred
Divide and weighs Cu powder: 45%, Fe powder: 25%, Cr powder: 5%, ZTA composite ceramic: 10%, MoS2 powder: 2%, graphite powder: 13% than proportion；
2) mixing: raw material components Cu, Fe, Cr, ZTA composite ceramics, MoS2 and the powdered graphite that prepare are mixed through high-speed mixer
It is even；3) it suppresses: green compact is made in the pushing of 650MPa pressure in uniformly mixed raw material；4) pressure sintering: green compact is fixed on
Supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree 0.1Pa, and sintering temperature is 900 DEG C, applies pressure and is
1MPa soaking time 2 hours, obtains powder metallurgy friction material.According to the copper-based composite friction material of above-mentioned technique preparation
Density is 5.453 × 103kg/m3, coefficient of friction 0.388, abrasion loss 0.282cm3/MJ.
Embodiment 2:
A kind of copper-based composite friction material is prepared, weight percentage of each component is as follows: Cu powder: 60%, Fe powder: 15%, Cr powder:
10%, ZTA composite ceramic: 2%, MoS2 powder: 0.5%, graphite powder: 12.5%.Its preparation step is as follows: 1) weighing: by weight hundred
Divide and weigh Cu powder: 60%, Fe powder: 15%, Cr powder: 10%, ZTA composite ceramic: 2%, MoS2 powder: 0.5%, graphite powder than proportion:
12.5%；2) mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, MoS2 and the powdered graphite that prepare through high-speed mixer
It is uniformly mixed；3) it suppresses: green compact is made in the pushing of 850MPa pressure in uniformly mixed raw material；4) pressure sintering: by green compact
It is fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree 10Pa, sintering temperature is 750 DEG C, applies pressure
Power is 3MPa, soaking time 4 hours, obtains powder metallurgy friction material.The copper-based friction composite wood prepared according to above-mentioned technique
The density of material is 5.531 × 103kg/m3, coefficient of friction 0.381, abrasion loss 0.293cm3/MJ.
Embodiment 3:
A kind of copper-based composite friction material of high abrasion is prepared, weight percentage of each component is as follows: Cu powder: 48%, Fe powder: 22%,
Cr powder: 6%, ZTA composite ceramic: 8%, MoS2 powder: 1.8%, graphite powder: 14.2%.Its preparation step is as follows: 1) weighing: by weight
It measures percentage proportion and weighs Cu powder: 48%, Fe powder: 22%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS2 powder: 1.8%, graphite
Powder: 14.2%；2) mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, MoS2 and the powdered graphite that prepare through high-speed stirred
Machine is uniformly mixed；3) it suppresses: green compact is made in the pushing of 650MPa pressure in uniformly mixed raw material；4) it pressure sintering: will press
Base is fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree 0.1Pa, and sintering temperature is 900 DEG C, applies
Plus-pressure is 1MPa, soaking time 2 hours, obtains powder metallurgy friction material.Copper-based friction according to the preparation of above-mentioned technique is multiple
The density of condensation material is 5.469 × 103kg/m3, coefficient of friction 0.392, abrasion loss 0.285cm3/MJ.
Embodiment 4:
A kind of copper-based composite friction material is prepared, weight percentage of each component is as follows: Cu powder: 53%, Fe powder: 18%, Cr powder:
8%, ZTA composite ceramic: 4%, MoS2 powder: 0.8%, graphite powder: 16.2%.Its preparation step is as follows: 1) weighing: percentage by weight
Cu powder: 53%, Fe powder: 18%, Cr powder: 8%, ZTA composite ceramic: 4%, MoS2 powder: 0.8%, graphite powder is weighed than proportion:
16.2%；2) mixing: by raw material components Cu, Fe, Cr, ZTA composite ceramics, MoS2 and the powdered graphite that prepare through high-speed mixer
It is uniformly mixed；3) it suppresses: green compact is made in the pushing of 850MPa pressure in uniformly mixed raw material；4) pressure sintering: by green compact
It is fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree 10Pa, sintering temperature is 750 DEG C, applies pressure
Power is 3MPa, soaking time 4 hours, obtains powder metallurgy friction material.The copper-based friction composite wood prepared according to above-mentioned technique
The density of material is 5.548 × 103kg/m3, coefficient of friction 0.401, abrasion loss 0.293cm3/MJ.
Embodiment 5:
A kind of copper-based composite friction material is prepared, weight percentage of each component is as follows: Cu powder: 50%, Fe powder: 20%, Cr powder:
6%, ZTA composite ceramic: 8%, MoS2 powder: 1%, graphite powder: 15%.Its preparation step is as follows: 1) weighing: matching by weight percentage
Than weighing Cu powder: 50%, Fe powder: 20%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS2 powder: 1%, graphite powder: 15%；2) mixing:
Raw material components Cu, Fe, Cr, ZTA composite ceramics, MoS2 and the powdered graphite that prepare are uniformly mixed through high-speed mixer；3) it presses
System: green compact is made in the pushing of 750MPa pressure in uniformly mixed raw material；4) green compact pressure sintering: is fixed on support steel back
On, it is put into vacuum sintering furnace and is sintered, vacuum degree 1Pa, sintering temperature is 850 DEG C, and applications pressure is 2MPa, when heat preservation
Between 3 hours, obtain powder metallurgy friction material.Density according to the copper-based composite friction material of above-mentioned technique preparation is 5.521
× 103kg/m3, coefficient of friction 0.414, abrasion loss 0.273cm3/MJ.
The present invention is to be described by embodiment, but do not limit the invention, referring to description of the invention, institute
Other variations of disclosed embodiment, are such as readily apparent that the professional person of this field, such variation should belong to
Within the scope of the claims in the present invention limit.
Claims (1)
1. a kind of copper-based composite friction material of high abrasion, it is characterised in that be mixed by the ingredient of following weight percent: Cu
Powder: 50%, Fe powder: 20%, Cr powder: 6%, ZTA composite ceramic: 8%, MoS2 powder: 1%, graphite powder: 15%, wherein Cu powder, Fe powder,
The purity of Cr powder is greater than 99.0%, and granularity is less than 75 μm；The purity of ZTA composite ceramic is greater than 99.0%, and granularity is 75~150 μ
m；The purity of MoS2 powder and graphite powder is greater than 99.5%, and granularity is less than 75 μm；
The copper-based composite friction material of high abrasion is prepared according to the following steps to obtain:
1) weighing: components by weight percentage weighs Cu powder, Fe powder, Cr powder, ZTA composite ceramic, MoS2 powder and graphite powder；
2) mixing: the material prepared is mixed through high-speed mixer to uniform；
3) it suppresses: uniformly mixed raw material being put into mold and be pressed into green compact, pressure is 650~850MPa；
4) vacuum pressed is sintered: green compact being fixed on supporting steel back, is put into vacuum sintering furnace and is sintered, vacuum degree is
0.1~10Pa, sintering temperature are 750~900 DEG C, and application pressure is 1~3MPa, soaking time 2~4 hours, obtains high abrasion
Copper-based composite friction material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112553.6A CN109777992A (en) | 2017-11-13 | 2017-11-13 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711112553.6A CN109777992A (en) | 2017-11-13 | 2017-11-13 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109777992A true CN109777992A (en) | 2019-05-21 |
Family
ID=66485436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711112553.6A Pending CN109777992A (en) | 2017-11-13 | 2017-11-13 | A kind of copper-based composite friction material of high abrasion and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109777992A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590066A (en) * | 2020-05-27 | 2020-08-28 | 漯河久铖智能装备有限公司 | Novel method for processing powder metallurgy brake pad friction block |
| CN113550993A (en) * | 2021-07-29 | 2021-10-26 | 武汉万邦激光金刚石工具股份有限公司 | Reinforced high-speed train brake pad material and preparation method thereof |
-
2017
- 2017-11-13 CN CN201711112553.6A patent/CN109777992A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111590066A (en) * | 2020-05-27 | 2020-08-28 | 漯河久铖智能装备有限公司 | Novel method for processing powder metallurgy brake pad friction block |
| CN113550993A (en) * | 2021-07-29 | 2021-10-26 | 武汉万邦激光金刚石工具股份有限公司 | Reinforced high-speed train brake pad material and preparation method thereof |
| CN113550993B (en) * | 2021-07-29 | 2022-03-25 | 武汉万邦激光金刚石工具股份有限公司 | Reinforced high-speed train brake pad material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104525949B (en) | A kind of copper-based composite friction material of high abrasion and preparation method thereof | |
| CN109053206B (en) | Short fiber reinforced oriented MAX phase ceramic matrix composite material and preparation method thereof | |
| CN111286642B (en) | Copper-based friction material suitable for carbon-ceramic brake disc and preparation method thereof | |
| CN108118181B (en) | A kind of copper-base powder metallurgy brake pad material and its preparation method and application | |
| CN101423745A (en) | Friction braking material and preparation method thereof | |
| CN102604596B (en) | Friction material and process for manufacturing aircraft braking disc made from same | |
| CN108374133B (en) | In-situ synthesis of MgAlB4Method for whisker reinforced aluminium base composite material | |
| CN108359825A (en) | A kind of preparation method of ceramics-graphene enhancing Cu-base composites | |
| CN107935617A (en) | A kind of manufacture method of bullet train carbon pottery brake material | |
| CN110238380A (en) | A kind of graphene enhancing bullet train brake pad material and preparation method thereof | |
| CN100591785C (en) | Powder metallurgy brake pad material for high speed multiple unit and preparation thereof | |
| CN109777992A (en) | A kind of copper-based composite friction material of high abrasion and preparation method thereof | |
| CN103938006B (en) | The preparation method of the corrosion of resistance to aluminium cermet material | |
| CN109136607A (en) | A kind of self-propagating synthesis of aluminum-base composite powder and its application | |
| CN109400030A (en) | High temperature resistant geo-polymer based composites and preparation method thereof for brake block | |
| CN109231990A (en) | A kind of preparation method of tungsten carbide-diamond composite | |
| CN105803286A (en) | Ceramic compound tool material and preparation method | |
| CN100391898C (en) | Plasma discharging and sintering process of synthesizing aluminum-titanium nitride-titanium nitride composite block material | |
| CN109396395B (en) | Iron-based composite grinding roller and preparation method thereof | |
| CN105198435B (en) | Silicon carbide-carbon composite material and preparation method thereof | |
| CN110484763A (en) | A kind of cermet and its preparation method and application based on novel adhesive | |
| CN105177386B (en) | Oil-free lubricating bearing material and preparation method thereof | |
| CN104907564B (en) | Preparation method for Ti3SiC2-Co based diamond ultra-thin saw blade materials | |
| CN104561628A (en) | Method for preparing zirconium diboride based ceramic composite material at low temperature | |
| CN103938051B (en) | The preparation method of the corrosion of resistance to aluminium high desnity metal ceramic material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |
|
| WD01 | Invention patent application deemed withdrawn after publication |