CN100467659C - Copper base particle reinforced friction material - Google Patents
Copper base particle reinforced friction material Download PDFInfo
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- CN100467659C CN100467659C CNB200610134187XA CN200610134187A CN100467659C CN 100467659 C CN100467659 C CN 100467659C CN B200610134187X A CNB200610134187X A CN B200610134187XA CN 200610134187 A CN200610134187 A CN 200610134187A CN 100467659 C CN100467659 C CN 100467659C
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- sintering
- friction material
- copper base
- base particle
- friction
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Abstract
The invention discloses a reinforced friction material of copper-based particle in the friction material making domain, which comprises the following parts: 30-70% Cu, 4-11% Sn, 1-15% Al, 5-18% Fe, 2-15% Al2O3, 2-15% SiO2, 0-15% ferrochrome and 5-20% graphite.
Description
Technical field:
The invention belongs to the friction materials technical field, in particular for making the reinforced friction material of rail vehicle brake pad.
Background technology:
Copper base particle reinforced friction material since have the intensity height, wear-resistant, thermal conductivity good, and have characteristics such as high friction coefficient, stable friction factor and become the critical material of making clutch coupling, stopper, be widely used in the machineries such as transportation means such as automobile, motorcycle, train, aircraft and petroleum drilling.Make the field at rail vehicle, be used to make brake block and brake pad.This class material is a matrix with the metal mainly, contains equally distributed hard particles and lubricated particle.The intensity of metallic matrix and content play a leading role to the intensity and the toughness of material, and hard particles and lubricated particle are hard brittle material, and its content is being controlled the frictional coefficient and the abrasion loss of goods.Improve the content of hard brittle material, help increasing frictional coefficient, reduce abrasion loss, simultaneously, reduce the intensity and the toughness of goods.
Along with the increase of brake load, as the raising of train speed, weight-carrying capacity increases, and the performance of friction braking material has been proposed more and more higher requirement, and this just requires material when guaranteeing matrix strength, further improves frictional coefficient and reduces abrasion loss.Simultaneously, the drag friction goods are a kind of easily worn parts, and replacement charge becomes an integral part of train operation cost.This just requires to reduce manufacturing cost when improving Properties of Friction Materials.
Aspect copper base particle reinforced friction material, relevant patent report is arranged all both at home and abroad.
As United States Patent (USP) 5,925,837 describe a kind ofly be used for arresting copper base friction material prescription and be: iron powder or steel wool (10-40%), aluminium powder (0-10%), zinc or tin or lead powder (0-15%), graphite (3-15%), Al
2O
3Or SiO
2(0-10%), manufacturing process is: the 375-623MPa compacted under, and at 100-300 ℃ of pre-treatment 1-3 hour, in 350-750 ℃ the air sintering 24-60 hour, material surface was not more than the 1mm zone of oxidation, and post-treatment grinds off zone of oxidation, and cleaning the back is the finished product.
A kind of ceramic friction material prescription that contains steel fiber of describing as Chinese patent 01115331.8 is: copper powder and glass putty 53-69%; copper powder: glass putty=92:8 wherein; the short steel fiber 10-40% that cuts; iron powder 0-10%; inorganic oxide or mineral 3-8%; graphite 5-12%; molybdenumdisulphide 0-4%; manufacturing process is: the 150-300Mpa compacted under, at 700-920 ℃ of sintering 3-8 hour, adopt restitutive protection's atmosphere during sintering; sintering pressure is 1-2MPa; be furnace cooling, after the taking-up, machinery polishes and is the finished product.
A kind ofly be used for arresting copper base friction material prescription and be as what Chinese patent application 03126347.X described: Cu:40-80%, Sn:3-10%, Al:2-10%, Fe::2-20%, SiC:1-3%, SiO
2: 1-8%, B
4C:1-3%, graphite: 1-15%, Pb〉0-10%, MoS
2: 2-10%, Ba:5-20%, Mn:0-2%, Mg:0-2, CaF
2: 0-2%.The employing powder metallurgical technique is made, and in the pressure sintering operation, the sintering range of employing is 950-1050 ℃, and soaking time is 1.5-2 hour.
A kind ofly be used for arresting friction plate and manufacture method is: copper 45-58%, iron 10-24%, tin 0.5-2.0%, molybdenum 2.0-5.0%, manganese 0.6-2.5%, molybdenumdisulphide 1.0-3.0%, graphite 10-12%, silicon-dioxide 5.0-10%, silicon carbide 1.0-3.0%, aluminium sesquioxide 1.0-3.0% (mass percent) as what Chinese patent application numbers 87106352.2 was described.Classified batch mixing, pressure sintering (being incubated 2-4 hour down) at 970-1000 ℃.
These patents of having reported more exist in these patents that trace element is many, sintering time is grown, contain problems such as steel fiber and lead element as can be known.Trace element increases and has improved raw-material cost on the one hand, to guarantee that on the other hand trace element plays the effect that improves the strength of materials, must improve sintering temperature and sintering time, if any the highest sintering temperature surpassed 1000 ℃, the longest sintering time that has reaches 60 hours, the long-time sintering of high temperature has increased the scaling loss and the oxidation of element on the one hand, can not give full play to the effect of element, has significantly improved manufacturing cost on the other hand.Contain steel fiber and occur the fiber agglomeration easily, produce the inhomogeneous situation of material property.It is harmful to environment to contain lead element, is that International Union of Railways is unallowed.Simultaneously, the friction and wear behavior that under the high temperature of high-speed train braking, high friction velocity condition, shown of these materials checking that awaits.
Summary of the invention:
The objective of the invention is to overcome above-mentioned not enough problem, a kind of copper base particle reinforced friction material is provided.This material contain trace element less, sintering temperature is low, the time is short, low cost of manufacture, at the aspect of performance of material, has the matrix strength height, hardness is big, with characteristics such as great friction coefficient and low abrasion losies.
The technical scheme that the present invention is adopted for achieving the above object is: a kind of copper base particle reinforced friction material, mainly form by copper, tin, aluminium, iron, aluminium sesquioxide, silicon-dioxide and graphite.
Described friction materials is made up of by described weight percent following composition: Cu:30-70%, Sn:4-11%, Al:1-15%, Fe:5-18%, Al
2O
3: 2-15%, SiO
2: 2-15%, ferrochrome exothermic: 0-15%, graphite: 5-20%.
Described copper base particle reinforced friction material is that the one-tenth of following weight per-cent is grouped into: Cu:35-65%, Sn:4-10%, Al:1-15%, Fe:5-18%, Al
2O
3: 2-12%, SiO
2: 2-15%, ferrochrome exothermic: 0-15%, graphite: 5-18%.
The copper base particle reinforced friction material that the present invention proposes can adopt the manufacturing of prior powder metallurgy technology, comprises starting material mixing-compacting-operations such as pressure sintering.In the pressure sintering operation, can adopt bell jar stove pressure sintering method, sintering range is 780-880 ℃, soaking time is 40-60min.Sintering pressure is 2-4MPa, and sintering atmosphere is a reducing atmosphere.Best is to adopt the straight heating and mould pressing sinter molding of electric current method, and sintering range is 750-900 ℃, and soaking time is 3-5min, and sintering pressure is 10-50MPa, and the sintering environment is a vacuum.
A kind of copper base particle reinforced friction material of the present invention is compared with same type of material has outstanding feature, except that aspect of performance is good, aspect material composition, reduced micro-kind, especially the composition that not leaded class is harmful to health helps environmental friendliness.Owing to reduced dystectic trace element, reduced sintering temperature, shortened sintering time, reduced the energy consumption of the course of processing significantly, saved manufacturing cost.In the copper matrix, improve by the ratio of adjusting tin, aluminium, iron, the alloying level that makes matrix, realized reaching maximum alloying level, thereby reached the purpose that improves the strength of materials, satisfied matrix demands for bearing capacity at high temperature by adding a small amount of alloying element.Simultaneously, tin, the flowability of matrix metal when these low melting point elements of aluminium have improved sintering help matrix metal and form parcel to the fragility particle, have reduced the weakening effect of fragility particle to the strength of materials.When the fragility particle was in the good clamp position of matrix metal, in friction, it was cracked and break away from the degree of matrix to have reduced the fragility particle, thereby has satisfied requirements such as material frictional coefficient under the high-speed friction condition is big, high temperature resistant, wear-resistant.Friction materials of the present invention has higher frictional coefficient under the high temperature and high speed condition, good wear resistance is more suitable for making high-speed train braking brake lining and the wind-power electricity generation brake pad of speed per hour more than 200 kilometers.
Description of drawings:
The high-speed train braking brake lining frictional coefficient test result of accompanying drawing for adopting material of the present invention to make.
Embodiment:
The present invention is further described below in conjunction with specific embodiment, but be not limited to embodiment:
Embodiment 1
Copper base particle reinforced friction material, the each component weight percent is as follows: copper powder 54%, glass putty 6%, aluminium powder 3%, iron powder 12%, Al
2O
36%, SiO
29%, graphite 10%.
Make brake pad by above-mentioned friction materials, at first above-mentioned raw materials is taken by weighing in proportion the back and mix, add the kerosene of powder mix weight 0.2%, be mixed to evenly.The powder mix that is fit to weight is put into mould, under the pressure of 500MPa, suppress 5-10 second, become the cold compaction blank after the taking-up.The cold compaction blank is inserted in the hot moulding mould, start vacuum system, when vacuum tightness reaches 70mmHg, blank is applied 3MPa pressure, simultaneously, start heating current, when the blank temperature reaches 800 ℃, blank is applied 50MPa pressure, insulation 2min, cool to 100 ℃ with the furnace and come out of the stove, make brake pad.
The hardness HB70 of the material that makes, density is 5.6g/cm
3, on GF150D type fixed speed fricting test machine, specific pressure is 0.6MPa, and the friction rotating speed is 200,500,2000, and 3000r/min, the frictional coefficient that records are 0.49,0.45,0.42,0.36, and abrasion loss is 0.41cm
3/ MJ.
Under the similarity condition, adopt bell jar stove pressure sintering method, the cold compaction blank is inserted in the bell-jar pressure sintering stove, sintering atmosphere is a hydrogen, pressure is 3.5MPa, and through the 2-3h heating, temperature reaches 800 ℃, soaking time is 1 hour, and furnace cooling is come out of the stove for 4-6h to 100 ℃, makes brake pad.
The hardness HB60 of the material that makes, density is 5.0g/mm
3On GF150D type fixed speed fricting test machine, specific pressure is 0.6MPa, and the friction rotating speed is 200,500,2000, and 3000r/min, the frictional coefficient that records are 0.44,0.45,0.39,0.35, and abrasion loss is 0.65cm
3//MJ.
Claims (2)
1, a kind of copper base particle reinforced friction material, it is characterized in that: it mainly is made up of copper, tin, aluminium, iron, aluminium sesquioxide, silicon-dioxide and graphite, and each component is formed by following weight percent: Cu:30-70%, Sn:4-11%, Al:1-15%, Fe:5-18%, Al
2O
3: 2-15%, SiO
2: 2-15%, ferrochrome exothermic: 0-15%, graphite: 5-20%.
2, a kind of copper base particle reinforced friction material according to claim 1, it is characterized in that: the one-tenth by following weight per-cent is grouped into: Cu:35-65%, Sn:4-10%, Al:1-15%, Fe:5-18%, Al
2O
3: 2-12%, SiO
2: 2-15%, ferrochrome exothermic: 0-15%, graphite: 5-18%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610134187XA CN100467659C (en) | 2006-11-03 | 2006-11-03 | Copper base particle reinforced friction material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610134187XA CN100467659C (en) | 2006-11-03 | 2006-11-03 | Copper base particle reinforced friction material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995436A CN1995436A (en) | 2007-07-11 |
| CN100467659C true CN100467659C (en) | 2009-03-11 |
Family
ID=38250637
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610134187XA Expired - Fee Related CN100467659C (en) | 2006-11-03 | 2006-11-03 | Copper base particle reinforced friction material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900016835A1 (en) * | 2019-09-20 | 2021-03-20 | Cofren Srl | PAIR OF DISC / BRAKE FRICTION FOR RAILWAY VEHICLES |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5462436B2 (en) * | 2007-10-15 | 2014-04-02 | 曙ブレーキ工業株式会社 | 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 |
| CN101644304B (en) * | 2009-09-04 | 2011-11-16 | 大连交通大学 | Metal base firing brake block with double-layer structure and manufacturing method thereof |
| CN102011043B (en) * | 2010-12-30 | 2012-07-25 | 北京瑞斯福科技有限公司 | Preparation method of powder metallurgy material for train brake pad |
| CN102632233B (en) * | 2012-04-24 | 2014-06-25 | 三门台基摩擦材料有限公司 | High-performance ceramic friction sheet and production process thereof |
| CN103273057A (en) * | 2013-05-28 | 2013-09-04 | 哈尔滨工业大学 | Cr2AlC reinforced bronze-based brake pad material used for high-speed railway and preparation method thereof |
| JP6503229B2 (en) * | 2015-05-28 | 2019-04-17 | 曙ブレーキ工業株式会社 | Method of manufacturing sintered friction material for high speed railway vehicle |
| CN105063459B (en) * | 2015-07-20 | 2017-05-17 | 广西民族大学 | Copper-based powder metallurgy friction material for high-speed train braking and preparation method thereof |
| KR101724896B1 (en) * | 2015-09-09 | 2017-04-10 | 현대자동차주식회사 | Brake friction material for stainless steel brake disc |
| CN105543535B (en) * | 2015-12-18 | 2017-09-19 | 聊城大学 | Al4SiC4With Cr cooperative reinforcings net/spherical copper product and preparation method |
| DE102016111122A1 (en) * | 2016-06-17 | 2017-12-21 | Hoerbiger Antriebstechnik Holding Gmbh | Sintered friction material for a friction lining |
| CN107649678B (en) * | 2017-09-29 | 2019-05-07 | 郑州轻工业学院 | A method of friction material is prepared using 3D printing device |
-
2006
- 2006-11-03 CN CNB200610134187XA patent/CN100467659C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 高速列车铜基复合材料闸片研制方案研究. 赵田臣，樊云昌.石家庄铁道学院学报，第14卷第4期. 2001 |
| 高速列车铜基复合材料闸片研制方案研究. 赵田臣，樊云昌.石家庄铁道学院学报，第14卷第4期. 2001 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201900016835A1 (en) * | 2019-09-20 | 2021-03-20 | Cofren Srl | PAIR OF DISC / BRAKE FRICTION FOR RAILWAY VEHICLES |
| EP3795854A1 (en) * | 2019-09-20 | 2021-03-24 | Cofren S.r.L. | Disc/brake friction torque for railway vehicles |
| US11668361B2 (en) | 2019-09-20 | 2023-06-06 | Poli S.R.L. | Vehicle disc/brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1995436A (en) | 2007-07-11 |
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Effective date of registration: 20100414 Address after: 116300, No. three, section 198, South Masonic Street, Dalian, Liaoning, Wafangdian City Patentee after: Dalian Yuantong brake products Co. Ltd. Address before: 116028 No. 794, the Yellow River Road, Xigang District, Liaoning, Dalian Patentee before: Dalian Jiaotong University |
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Denomination of invention: Copper base particle reinforced friction material Effective date of registration: 20110402 Granted publication date: 20090311 Pledgee: Dalian Bank Co.,Ltd. Pledgor: Dalian Yuantong brake products Co. Ltd. Registration number: 2011990000102 |
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Date of cancellation: 20120331 Granted publication date: 20090311 Pledgee: Dalian Bank Co.,Ltd. Pledgor: Dalian Yuantong brake products Co. Ltd. Registration number: 2011990000102 |
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Denomination of invention: Copper base particle reinforced friction material Effective date of registration: 20120401 Granted publication date: 20090311 Pledgee: Dalian Bank Co.,Ltd. Pledgor: Dalian Yuantong brake products Co. Ltd. Registration number: 2012990000123 |
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