CN101813151A - Semimetal ceramic matrix air disc brake pad and production method thereof - Google Patents
Semimetal ceramic matrix air disc brake pad and production method thereof Download PDFInfo
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- CN101813151A CN101813151A CN 201010179483 CN201010179483A CN101813151A CN 101813151 A CN101813151 A CN 101813151A CN 201010179483 CN201010179483 CN 201010179483 CN 201010179483 A CN201010179483 A CN 201010179483A CN 101813151 A CN101813151 A CN 101813151A
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Abstract
The invention discloses a semimetal ceramic matrix air disc brake pad of an air disc braking system for heavy-duty freight cars and a production method thereof, wherein the production flow is as follows: sequentially weighing and putting 10-20 nonmetal assorted fibre, 30-40 metal fibre, 5-15 of friction performance regulator, 15-25 of vitrified bond, 5-10 of elastic toughening agent and 10-20 of filler into a high-speed mixer to mix uniformly, then carrying out pressing and thermocuring treatment according to a dry once-through molding technique of the traditional resin matrix friction materials, finally machining, ceramic processing, inspecting and packaging. The semimetal ceramic matrix air disc brake pad manufactured according to the technique has large braking torque, comfortable emergency braking, small heat fading and simple production technology, is environmental friendly, is particularly suitable for air disc brakes of the heavy-duty freight cars, and has wide market prospect.
Description
Technical field
The present invention relates to a kind of air-pressure disk type brake pad, particularly relate to a kind of semimetal ceramic-base brake block that is used for heavy-duty freight car air-pressure disc type brake system, the invention still further relates to the preparation method of this brake block.
Background technique
From technical standpoint, one, drum brake since its structural feature the heat of its generation of when work difficulty distribute, the press disc type break is because the brake disc major part all is exposed in the air, and heat exchange is easy, during work temperature rise lower, heat fade is little.Two, air-pressure disc brake is under the identical situation of required braking moment, and its boundary dimension is more much smaller than drum brake. and therefore arrange and brought convenience to car load; And since its quality particularly the quality of rotating part is much smaller, unbalance amount is also much smaller.Can obviously improve travelling comfort, smoothness and the control stability of automobile.Three, thickness reaches 20mm because the friction facing of air-pressure disc brake can wear and tear, and the worn and torn thickness of drum brake friction plate is less than 10mm, therefore under equal service condition, the replacement cycle of disk type braker friction facing is much longer than drum brake: if consider the difference of two kinds of brake cooling capacitys, their replacement cycle difference can reach more than 3 times.
In view of the performance characteristics more than the air-pressure disc brake, we can say that the application of disk type braker is the effective ways that solve the malfunctioning problem of automobile brake that China's heavy-duty freight car causes in the continuous descending process of mountain road.
The air-pressure disk type brake pad of main flow adopts resin-matrix friction material more in the market.Prescription characteristics from brake block, the temperature on brake block and brake disc surface is up to 500～700 ℃ during automobile brake, because the resin base brake block at high temperature can decompose and emit water, gas, wet goods, form thin film at friction surface, make dry friction become mixed friction or wet friction, friction factor significantly reduces, the hidden danger that exists brake to lose efficacy is simultaneously because a large amount of thermolysiss of resin have reduced its cementation, material at high temperature wearing and tearing aggravation causes significantly reduce the working life of brake block.Some ceramic automobile brake blocks on the market adopt the ceramic fiber of more amount to substitute traditional Steel Fibre at present, although its braking comfort property (comprise noise, fall ash and with the antithesis matching etc.) obviously improve, but owing to still adopt resin, caused it to have the elevated temperature heat decline and at high temperature very easily cracked and problems such as high-temperature wear behavior is relatively poor as main Bond.
Summary of the invention
First technical problem to be solved by this invention provides the semimetal ceramic matrix air disc brake pad that a kind of braking ability is reliable, heat fade is little, travelling comfort is good.
Second technical problem to be solved by this invention provides a kind of preparation method of this semimetal ceramic matrix air disc brake pad.
In order to solve above-mentioned first technical problem, semimetal ceramic matrix air disc brake pad provided by the invention, its material prescription is counted by weight percentage and is nonmetal mixed fibre 10-20, steel fiber 30-40, frictional property regulator 5-15, vitrified bond 15-25, elasticity plasticizer 5-10, filler 10-20, wherein: described vitrified bond is meant silicate; Described nonmetal mixed fibre is carbon fiber, composite fiber and aramid fibre pulp; Described steel fiber is Steel Fibre, aluminum fiber, the red copper fiber; Frictional property regulator mainly comprises antimony sulphide, chromite and artificial graphite, crystalline flake graphite; Described elasticity plasticizer is made up of acrylonitrile-butadiene rubber powder, friction powder, vermiculite; Described filler is made up of barite, calcium lime powder.
Its material prescription is by weight percentage:
Vitrified bond 15～25, aramid fibre pulp 0～5,
Carbon fiber 0～5 composite fiber 0～10
Aluminum fiber 0～10, Steel Fibre 25～35
Red copper fiber 0～5, antimony sulphide 0～5
Chromite 0～5, artificial graphite 5～10,
Crystalline flake graphite 5～10, nitrile butadiene rubber 0～5
Friction powder 0～5, vermiculite 0～5,
Blanc fixe 0～5, calcium lime powder 0～5.
In order to solve above-mentioned second technical problem, the preparation method of semimetal ceramic base automobile brake pad provided by the invention comprises the steps:
(1), batch mixing: the order that load weighted each material is dropped in the high speed mixer is: earlier nonmetal, compound fibric, frictional property regulator are carried out premixing, guarantee that composite fiber is in homogeneously dispersed state, add other raw and auxiliary material then, evenly stir;
(2), hot pressing: pressing pressure 200～300kgf/cm
2, hot pressing temperature 150～160, exhaust 5～8 times, the dwell time decides according to the thickness of brake block, generally is 55～65s/mm;
(3), the brake block after the moulding was warmed up to 200～220 at 5.5～6.5 hours from room temperature, be incubated 4～8 hours, cool to room temperature then with the furnace;
(4), the brake block after the heat treatment is carried out plain grinding, boring by technical requirements, under 300～400 temperature, carry out ceramic treatment then, spraying, seal mark, check, packing.
The semimetal ceramic matrix air disc brake pad that adopts technique scheme to make, be on the basis of traditional asbestos and resin base brake block, in conjunction with the heavy-duty freight car characteristics, proposed semimetal ceramic matrix air disc brake pad, had that braking moment is big, emergency braking is comfortable steadily, do not have obviously decline, noise free, fall that ash and production technology are simple, environmental protection less.
In sum, the present invention is a kind of semimetal ceramic matrix air disc brake pad that is applicable to the heavy-duty freight car disk braking system, has vast market prospect.
Embodiment
Further specify the effect of this invention below in conjunction with embodiment.
Embodiment 1:
Sodium aluminosilicate 15, aramid fibre pulp 5,
Carbon fiber 5 composite fibers 0
Aluminum fiber 10, Steel Fibre 25
Red copper fiber 5, antimony sulphide 5,
Chromite 5, artificial graphite 5,
Crystalline flake graphite 5, nitrile butadiene rubber 5,
Friction powder 5, vermiculite 5,
Blanc fixe 0, calcium lime powder 0.
Concrete preparation method is as follows:
(1), batch mixing: the order that load weighted each material is dropped in the high speed mixer is: earlier nonmetal, compound fibric, frictional property regulator are carried out premixing, guarantee that composite fiber is in homogeneously dispersed state, add other raw and auxiliary material then, evenly stir;
(2), hot pressing: pressing pressure 250kgf/cm
2, 155 ℃ of hot pressing temperatures, exhaust 6 times, the dwell time is 60s/mm;
(3), the brake block after the moulding was warmed up to 210 ℃ at 6 hours from room temperature, be incubated 6 hours, cool to room temperature then with the furnace;
(4), the brake block after the heat treatment is carried out plain grinding, boring by technical requirements, under 350 temperature, carry out ceramic treatment then, spraying, seal mark, check, packing.
The performance of semimetal ceramic matrix air disc brake pad
Respectively semimetal ceramic-base brake block sample and the exemplar of the Wuhan Yuan Feng DR01 of embodiment's 1 preparation are tested and estimated by GB5763-2008, QC/T479-1999 and QC/T239-1997, experimental result sees Table 1 and table 2.
Table 1 sample constant speed survey report
Table 2DA225 exemplar is at Wuhan Yuan Feng air-pressure disc brake survey report
Attached one: the potency test key data
Annex II: heat fade and stable key data
Embodiment 2:
Sodium aluminosilicate 25, aramid fibre pulp 0,
Carbon fiber 0 composite fiber 10,
Aluminum fiber 0, Steel Fibre 35,
Red copper fiber 0, antimony sulphide 3
Chromite 3, artificial graphite 7,
Crystalline flake graphite 7, nitrile butadiene rubber 3
Friction powder 2, vermiculite 0,
Blanc fixe 5, calcium lime powder 0.
Concrete preparation method is as follows:
(1), batch mixing: the order that load weighted each material is dropped in the high speed mixer is: earlier nonmetal, compound fibric, frictional property regulator are carried out premixing, guarantee that composite fiber is in homogeneously dispersed state, add other raw and auxiliary material then, evenly stir;
(2), hot pressing: pressing pressure 200kgf/cm
2, 150 ℃ of hot pressing temperatures, exhaust 5 times, the dwell time is 55s/mm;
(3), the brake block after the moulding was warmed up to 200 at 5.5 hours from room temperature, be incubated 4 hours, cool to room temperature then with the furnace;
(4), the brake block after the heat treatment is carried out plain grinding, boring by technical requirements, under 300 ℃ temperature, carry out ceramic treatment then, spraying, seal mark, check, packing.
The performance of semimetal ceramic matrix air disc brake pad
Respectively semimetal ceramic-base brake block sample and the exemplar of the Wuhan Yuan Feng DR01 of embodiment's 2 preparations are tested and estimated by GB5763-2008, QC/T479-1999 and QC/T239-1997, experimental result sees Table 3 and table 4.
Table 3 sample constant speed survey report
Table 4DA225 exemplar is at Wuhan Yuan Feng air-pressure disc brake survey report
Attached one: the potency test key data
Annex II: heat fade and stable key data
Embodiment 3
Sodium aluminosilicate 15, aramid fibre pulp 0,
Carbon fiber 5, composite fiber 0,
Aluminum fiber 5, Steel Fibre 30,
Red copper fiber 0, antimony sulphide 2,
Chromite 3, artificial graphite 10,
Crystalline flake graphite 10, nitrile butadiene rubber 3,
Friction powder 4, vermiculite 3,
Blanc fixe 5, calcium lime powder 5.
Concrete preparation method is as follows:
(1), batch mixing: the order that load weighted each material is dropped in the high speed mixer is: earlier nonmetal, compound fibric, frictional property regulator are carried out premixing, guarantee that composite fiber is in homogeneously dispersed state, add other raw and auxiliary material then, evenly stir;
(2), hot pressing: pressing pressure 200kgf/cm
2, 150 ℃ of hot pressing temperatures, exhaust 5 times, the dwell time is 55s/mm;
(3), the brake block after the moulding was warmed up to 200 at 5.5 hours from room temperature, be incubated 4 hours, cool to room temperature then with the furnace;
(4), the brake block after the heat treatment is carried out plain grinding, boring by technical requirements, under 300 ℃ temperature, carry out ceramic treatment then, spraying, seal mark, check, packing.
Claims (3)
1. semimetal ceramic matrix air disc brake pad, it is characterized in that: its material prescription is counted by weight percentage and is nonmetal mixed fibre 10-20, steel fiber 30-40, frictional property regulator 5-15, vitrified bond 15-25, elasticity plasticizer 5-10, filler 10-20, wherein: described vitrified bond is meant silicate; Described nonmetal mixed fibre is carbon fiber, composite fiber and aramid fibre pulp; Described steel fiber is Steel Fibre, aluminum fiber and red copper fiber; Described frictional property regulator comprises antimony sulphide, chromite and artificial graphite, crystalline flake graphite; Described elasticity plasticizer is made up of acrylonitrile-butadiene rubber powder, friction powder, vermiculite; Described filler is made up of barite, calcium lime powder.
2. semimetal ceramic matrix air disc brake pad according to claim 1 is characterized in that: its material prescription is by weight percentage:
Vitrified bond 15～25, aramid fibre pulp 0～5,
Carbon fiber 0～5 composite fiber 0～10
Aluminum fiber 0～10, Steel Fibre 25～35
Red copper fiber 0～5, antimony sulphide 0～5
Chromite 0～5, artificial graphite 5～10,
Crystalline flake graphite 5～10, nitrile butadiene rubber 0～5
Friction powder 0～5, vermiculite 0～5,
Blanc fixe 0～5, calcium lime powder 0～5.
3. prepare the method for the described semimetal ceramic matrix air disc brake pad of claim 1, it is characterized in that: comprise the steps:
(1), batch mixing: the order that load weighted each material is dropped in the high speed mixer is: earlier nonmetal, compound fibric, frictional property regulator are carried out premixing, guarantee that composite fiber is in homogeneously dispersed state, add other raw and auxiliary material then, evenly stir;
(2), hot pressing: pressing pressure 200～300kgf/cm
2, 150～160 ℃ of hot pressing temperatures, exhaust 5～8 times, the dwell time decides according to the thickness of brake block, generally is 55～65s/mm;
(3), the brake block after the moulding was warmed up to 200～220 ℃ at 5.5～6.5 hours from room temperature, be incubated 4～8 hours, cool to room temperature then with the furnace;
(4), the brake block after the heat treatment is carried out plain grinding, boring by technical requirements, under 300～400 ℃ temperature, carry out ceramic treatment then, spraying, seal mark, check, packing.
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| CN 201010179483 CN101813151B (en) | 2010-05-24 | 2010-05-24 | Production method of semimetal ceramic matrix air disc brake pad |
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| CN 201010179483 CN101813151B (en) | 2010-05-24 | 2010-05-24 | Production method of semimetal ceramic matrix air disc brake pad |
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| CN101813151B CN101813151B (en) | 2013-08-07 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031088A (en) * | 2010-12-09 | 2011-04-27 | 南京航空航天大学 | Inorganic-organic composite friction material and preparation method thereof |
| CN103089875A (en) * | 2013-01-22 | 2013-05-08 | 东营友亮工贸有限公司 | Coconut carbon compound type brake pad and preparation method |
| CN104315045A (en) * | 2014-09-16 | 2015-01-28 | 湖南博云汽车制动材料有限公司 | Low-cost low-noise semimetal disc type brake pad and preparation method thereof |
| CN105240429A (en) * | 2015-10-27 | 2016-01-13 | 张荣斌 | Vanadium-contained semimetallic brake block |
| CN105299112A (en) * | 2015-11-12 | 2016-02-03 | 东营睿智友亮石油设备有限公司 | Environment-friendly coconut charcoal fiber composite friction material and manufacturing method for brake pad |
| CN109595279A (en) * | 2018-12-26 | 2019-04-09 | 深圳市智雅墨族科技有限公司 | The preparation method of the nanometer enhanced carbon-silicon carbide brake material of servo |
| CN109722223A (en) * | 2017-10-31 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of brake block with long service life |
| CN110724888A (en) * | 2019-10-11 | 2020-01-24 | 瑞安市洪江车业有限公司 | Red copper-based environment-friendly disc brake sheet and preparation method thereof |
| CN114593163A (en) * | 2022-03-07 | 2022-06-07 | 莆田市万佳机动车配件股份有限公司 | Brake with temperature control and limiting alarm functions and production process thereof |
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| CN101113204A (en) * | 2007-07-17 | 2008-01-30 | 李军魂 | Formula of ceramic radical friction material for automobile braking friction facing |
| CN101586636A (en) * | 2009-07-06 | 2009-11-25 | 中南大学 | Low ceramet group automobile brake block and preparation method thereof |
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Patent Citations (4)
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| CN101113204A (en) * | 2007-07-17 | 2008-01-30 | 李军魂 | Formula of ceramic radical friction material for automobile braking friction facing |
| WO2010016079A1 (en) * | 2008-08-08 | 2010-02-11 | Freni Brembo S.P.A. | Method for making a ceramic matrix material for friction components of brakes and ceramic matrix material made by such method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102031088A (en) * | 2010-12-09 | 2011-04-27 | 南京航空航天大学 | Inorganic-organic composite friction material and preparation method thereof |
| CN102031088B (en) * | 2010-12-09 | 2013-03-13 | 南京航空航天大学 | Inorganic-organic composite friction material and preparation method thereof |
| CN103089875A (en) * | 2013-01-22 | 2013-05-08 | 东营友亮工贸有限公司 | Coconut carbon compound type brake pad and preparation method |
| CN103089875B (en) * | 2013-01-22 | 2015-04-22 | 东营友亮工贸有限公司 | Coconut carbon compound type brake pad and preparation method |
| CN104315045A (en) * | 2014-09-16 | 2015-01-28 | 湖南博云汽车制动材料有限公司 | Low-cost low-noise semimetal disc type brake pad and preparation method thereof |
| CN105240429A (en) * | 2015-10-27 | 2016-01-13 | 张荣斌 | Vanadium-contained semimetallic brake block |
| CN105299112A (en) * | 2015-11-12 | 2016-02-03 | 东营睿智友亮石油设备有限公司 | Environment-friendly coconut charcoal fiber composite friction material and manufacturing method for brake pad |
| CN109722223A (en) * | 2017-10-31 | 2019-05-07 | 丹阳市金长汽车部件有限公司 | A kind of brake block with long service life |
| CN109595279A (en) * | 2018-12-26 | 2019-04-09 | 深圳市智雅墨族科技有限公司 | The preparation method of the nanometer enhanced carbon-silicon carbide brake material of servo |
| CN110724888A (en) * | 2019-10-11 | 2020-01-24 | 瑞安市洪江车业有限公司 | Red copper-based environment-friendly disc brake sheet and preparation method thereof |
| CN114593163A (en) * | 2022-03-07 | 2022-06-07 | 莆田市万佳机动车配件股份有限公司 | Brake with temperature control and limiting alarm functions and production process thereof |
| CN114593163B (en) * | 2022-03-07 | 2024-05-07 | 莆田市莆佳机械制造有限公司 | Brake with temperature control and limiting alarm functions and production process thereof |
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