CN1257903A - Friction material made by powder metallurgy for brake - Google Patents
Friction material made by powder metallurgy for brake Download PDFInfo
- Publication number
- CN1257903A CN1257903A CN 99122593 CN99122593A CN1257903A CN 1257903 A CN1257903 A CN 1257903A CN 99122593 CN99122593 CN 99122593 CN 99122593 A CN99122593 A CN 99122593A CN 1257903 A CN1257903 A CN 1257903A
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- CN
- China
- Prior art keywords
- powder metallurgy
- friction material
- brake
- material made
- graphite
- 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.)
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- Braking Arrangements (AREA)
- Powder Metallurgy (AREA)
Abstract
A friction material for brake is made by powder metallurgy and contains such components as Cu (15-30%), Sn (3-7%), Sb (0.5-3%), MoS2(1-3%), graphite (6-12%), Al2O3 (1.5-6%), SiO2 (1.5-6%) and Fe (the balance). Its advantages are high friction performance, quick heat radiation, and no caking property and inlaid metal.
Description
The invention belongs to the friction materials technical field, relate in particular to a kind of novel powder metallurgy friction material that is used for car brakeing.
The rail vehicles brake shoe adopts cast iron materials in the past always, and its frictional coefficient shakiness wears no resistance, and is easy to fracture, can only use below the speed per hour at 120 kilometers.A kind of synthetic materials brake shoe had appearred afterwards, be exactly that the matrix constituent element adopts organic materials synthetic friction materialss such as resol, cashew resin, though adopt this synthetic materials to improve the frictional behaviour of brake shoe to a certain extent, but it is easy to the wheel that bonds when braking summer, be easy to fracture winter again, frictional behaviour severe exacerbation when train speed per hour surpasses 120 kilometers.In recent years, along with science and technology development, mmaterial begins to be applied on brake shoe.The powder metallurgy brake block of prior art generally adopts iron-based powder metallurgy friction material.Though frictional behaviour and break resistance all are better than above-mentioned two kinds of materials, can use under the speed per hour situation more than 120 kilometers, but it in use is easy to form bonding or damascene, makes wheel wear bigger, produce the local superheating phenomenon, even the double-body bike wheel-tyre is come off.In addition, prior art thinks that the local superheating phenomenon during braking can make SiO
2, Al
2O
3Produce untoward reaction, thereby under the high-speed overload situation, should not contain SiO in the powder metallurgy friction material constituent element
2, Al
2O
3
Purpose of the present invention will overcome the deficiency of above-mentioned prior art exactly, provides that a kind of frictional behaviour is good, the friction material made by powder metallurgy for brake of rapid heat dissipation, nothing bonding, no damascene.
The object of the present invention is achieved like this: a kind of friction material made by powder metallurgy for brake, contain Cu, Fe, Sn, MoS in the composition
2, graphite, Sb, Al
2O
3, SiO
2, each component content proportioning is Cu 15～30%, and Sn 3～7%, and Sb 0.5～3%, MoS
21～3%, graphite 6～12%, Al
2O
31.5～6%, SiO
21.5～6%, the rest is Fe.
In order to realize purpose of the present invention better, in above-mentioned friction material made by powder metallurgy for brake composition, also contain Pb3～8%.
In order to realize purpose of the present invention better, in above-mentioned friction material made by powder metallurgy for brake composition, also contain P 0.1～1%.
Adopt technical scheme of the present invention, owing to strengthened the content of copper, thereby make the thermal conductivity of material better, avoided SiO
2, Al
2O
3Produce untoward reaction because of overheated; Because an amount of Sb, Sn, Pb forms cocrystalization compound in the composition, thereby makes material have good frictional behaviour, plays the anti stick effect in braking procedure; Because contain an amount of P in the composition, in sintering process, P diffuses to form phosphatization eutectic reticulation, has stablized frictional coefficient, has improved the bending strength and the slip resistance of material.
Describe three embodiment of the present invention below in detail.
One, composition proportion (%)
Sn Pb Sb P MoS
2Graphite Al
2O
3SiO
2Cu Fe
Surplus example 1 3～6 3～6 0.5～1 0.2～0.8 1～3 7～12 1.5～6 1.5～6 15～16
Surplus example 2 3～6 3～6 0.8～2 0.2～0.8 1～3 7～12 1.5～6 1.5～6 25～30
Surplus example 3 3～6 3～7 0.5～3 0.2～0.3 1～3 7～12 1.5～6 1.5～6 15～16
Two, technological process
Press forming → at 980～1000 ℃ of sintering temperatures 2 hours → come out of the stove
Three, test-results
Rotating speed (r/min) the density hardness abrasion loss rim rim surface of wearing and tearing
(g/m
3) (HB) (g) wearing and tearing range have or not whether local
The overheated example 1 931.2 915 906 896 4.5 30 of A B C D spark～32 0.624 do not have the no example 3 916 906 904.6 904.2 4.8 35 of no example 2 922 909.5 909.5 908.5 4.3 28～32 0.350 nothing～42 0.092 and do not have
The rotating speed that A in the rotating speed, B, C, D measure when being 1,10,20,30 minute respectively.
Claims (4)
1, a kind of friction material made by powder metallurgy for brake contains Cu, Fe, Sn, MoS in the composition
2, graphite, it is characterized in that also containing Sb, SiO
2, each component content proportioning is Cu 15～30%, and Sn 3～7%, and Sb 0.5～3%, MoS
21～3%, graphite 6～12%, SiO
21.5～6%, the rest is Fe.
2, a kind of friction material made by powder metallurgy for brake contains Cu, Fe, Sn, MoS in the composition
2, graphite, it is characterized in that also containing Sb, Al
2O
3, each component content proportioning is Cu 15～30%, and Sn 3～7%, and Sb 0.5～3%, MoS
21～3%, graphite 6～12%, Al
2O
31.5～6%, the rest is Fe.
3, friction material made by powder metallurgy for brake according to claim 1 and 2 is characterized in that also containing in the composition Pb 3～8%.
4, friction material made by powder metallurgy for brake according to claim 1 and 2 is characterized in that also containing in the composition P 0.1～1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99122593 CN1257903A (en) | 1999-11-29 | 1999-11-29 | Friction material made by powder metallurgy for brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99122593 CN1257903A (en) | 1999-11-29 | 1999-11-29 | Friction material made by powder metallurgy for brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1257903A true CN1257903A (en) | 2000-06-28 |
Family
ID=5282586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99122593 Pending CN1257903A (en) | 1999-11-29 | 1999-11-29 | Friction material made by powder metallurgy for brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1257903A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381536C (en) * | 2005-05-18 | 2008-04-16 | 中国科学院金属研究所 | Wet type copper base friction material and its preparation method |
| CN101602105B (en) * | 2009-07-07 | 2010-12-08 | 吉林大学 | Metal-based powder metallurgy brake lining material and preparation methods thereof |
| CN101469261B (en) * | 2007-12-26 | 2012-03-07 | 比亚迪股份有限公司 | Composition for preparing iron based powder metallurgy friction material and friction material |
| CN101314708B (en) * | 2007-05-29 | 2013-03-13 | 北京北摩高科摩擦材料有限责任公司 | Iron-based powder metallurgy friction material |
| CN103108938A (en) * | 2010-08-17 | 2013-05-15 | 株式会社百奥尼 | Low heat capacity composite for thermal cycler |
| CN107520451A (en) * | 2017-08-02 | 2017-12-29 | 宁波瑞丰汽车零部件有限公司 | A kind of shock absorber piston and its preparation technology |
-
1999
- 1999-11-29 CN CN 99122593 patent/CN1257903A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381536C (en) * | 2005-05-18 | 2008-04-16 | 中国科学院金属研究所 | Wet type copper base friction material and its preparation method |
| CN101314708B (en) * | 2007-05-29 | 2013-03-13 | 北京北摩高科摩擦材料有限责任公司 | Iron-based powder metallurgy friction material |
| CN101469261B (en) * | 2007-12-26 | 2012-03-07 | 比亚迪股份有限公司 | Composition for preparing iron based powder metallurgy friction material and friction material |
| CN101602105B (en) * | 2009-07-07 | 2010-12-08 | 吉林大学 | Metal-based powder metallurgy brake lining material and preparation methods thereof |
| CN103108938A (en) * | 2010-08-17 | 2013-05-15 | 株式会社百奥尼 | Low heat capacity composite for thermal cycler |
| CN107520451A (en) * | 2017-08-02 | 2017-12-29 | 宁波瑞丰汽车零部件有限公司 | A kind of shock absorber piston and its preparation technology |
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| SE01 | Entry into force of request for substantive examination | ||
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| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |