CN102758870B - A kind of brake for cars friction facing and preparation method thereof - Google Patents
A kind of brake for cars friction facing and preparation method thereof Download PDFInfo
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- CN102758870B CN102758870B CN201210251505.6A CN201210251505A CN102758870B CN 102758870 B CN102758870 B CN 102758870B CN 201210251505 A CN201210251505 A CN 201210251505A CN 102758870 B CN102758870 B CN 102758870B
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Abstract
The invention discloses a kind of brake for cars friction facing and preparation method thereof, comprise the raw material of following weight percentage: the Bond of 10-20%; The reinforcing fiber of 20-40%; The increasing of 10-20% rubs agent; The oiling agent of 10-20% and the filler of 20-40%.Preparation method comprises step: 1) mixed by raw material, be placed in high speed mixer by mixture and stir and evenly mix; 2) material of mixing being placed in mould heats compressing; 3) shaping rear friction facing is incubated 16 ~ 20 hours at 140-180 DEG C; 4) milling that the friction facing of insulation sizing carries out outer arced surface, intrados and end face is cut make finished product with Drilling operation.The formula for raw stock of friction facing ensure that friction facing has stable frictional behaviour and restorability, and production technology is simple, convenient operation.And through test of many times, obtain molding temperature and the molding pressure of optimum range, ensure that the successful of die press technology for forming.
Description
Technical field
The invention belongs to Automotive Friction Material technical field, be specifically related to a kind of brake for cars friction facing and preparation method thereof.
Background technique
Automotive brake friction facing is the critical product of vehicle safety travel.Domestic and international brake gland for vehicle adopts semimetal material, to add Steel Fibre for feature.Steel Fibre heat conduction, has some strength and wear resistance, but density is large, easily gets rusty, and matter is hard, and easy damaged antithesis, easily produces brake noise.The problem of material owing to filling a prescription of domestic automobile brake strip, wear-resisting not.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, and provide a kind of brake for cars friction facing and preparation method thereof, described brake bush has stable frictional behaviour and restorability.Break drum temperature is lower, greatly improves the durable working life of brake lining.
The present invention is achieved by the following technical solutions:
A kind of brake for cars friction facing, comprises the raw material of following weight percentage:
The Bond of 10-20%; The reinforcing fiber of 20-40%; The increasing of 10-20% rubs agent; The oiling agent of 10-20% and the filler of 20-40%.
Described Bond comprises phenolic resin.
Described reinforcing fiber is two or more the combination in compound mineral fiber, ceramic fiber, glass fibre, organic fiber and Steel Fibre.Compound mineral fiber plants mineral at 1200 degree by aluminium oxide, silica etc.--the high temperature melting of 1800 degree, then by technological means, finally blowing forms, by those skilled in the art are familiar with.
Described reinforcing fiber is the composition of compound mineral fiber, ceramic fiber, glass fibre, organic fiber and Steel Fibre.
The weight ratio of described compound mineral fiber, ceramic fiber, glass fibre, organic fiber and Steel Fibre is 20: 6: 6: 5: 3.
The described increasing agent that rubs is one or both combination in alumina powder and Frication powder.
The described increasing agent that rubs is the composition of alumina powder and Frication powder, and the weight ratio of alumina powder and Frication powder is 1: 2.
Described oiling agent is the combination of one or more in graphite, calcined petroleum coke and carbon black.
Described oiling agent is the composition of graphite, calcined petroleum coke and carbon black.
The weight ratio of described graphite, calcined petroleum coke and carbon black is 3: 2: 1.
Described filler is the combination of one or more in nitrile rubber, tyre talc, barium sulphate and expanded vermiculite.
Described filler is the composition of nitrile rubber, tyre talc, barium sulphate and expanded vermiculite.
The weight ratio of described nitrile rubber, tyre talc, barium sulphate and expanded vermiculite is 5: 5: 18: 3.
Present invention also offers a kind of preparation method of brake for cars friction facing, comprise the steps:
1) according to taking the mixing of each raw material components to certainty ratio, mixture is placed in high speed mixer and stirs and evenly mixs;
2) material of mixing being placed in mould heats compressing, heating-up temperature 140-180 DEG C, and pressing pressure is 18-24MPa;
3) friction facing after shaping is incubated 16 ~ 20 hours at 140-180 DEG C;
4) milling that the friction facing of insulation sizing carries out outer arced surface, intrados and end face is cut make finished product with Drilling operation.(this step refers to that the milling first carrying out outer arced surface, intrados and end face is cut, and then carries out the Drilling operation of friction facing)
The described time adding hot pressing is 120-180S.
When described heating is compressing, preferred heating-up temperature is 160 DEG C, and pressing pressure is 20MPa.
Compressing middle the used releasing agent of described heating is zine stearate.
Before described raw material mixing, be crushed to setting granularity.
Described shaping after friction facing before insulation, first remove burr.
Described shaping after friction facing carry out isothermal holding in an oven.
Technical solution of the present invention with reference to the various measure and viewpoint that increase friction facing wear resistance: out-phase compound viewpoint, the composite lubricated viewpoint of multistage, and friction resistance material production technology adopts dry technology for production.
Advantage of the present invention is:
The formula for raw stock of friction facing ensure that friction facing has stable frictional behaviour and restorability, and production technology is simple, convenient operation.And through test of many times, obtain molding temperature and the molding pressure of optimum range, ensure that the successful of die press technology for forming.
Accompanying drawing explanation
Fig. 1 is brake bush preparation process flow chart of the present invention;
Embodiment
Below in conjunction with accompanying drawing, brake for cars friction facing of the present invention is described in detail:
Embodiment 1
Brake for cars friction facing embodiment scheme, its preparation method as shown in Figure 1:
1) take raw material to prepare burden in proportion: the Bond of 20%; The reinforcing fiber of 20%; The increasing of 10% rubs agent; The oiling agent of 20% and the filler of 30%, wherein, Bond comprises phenolic resin, reinforcing fiber is the composition of compound mineral fiber, glass fibre and Steel Fibre, increasing the agent that rubs is alumina powder or Frication powder, and oiling agent is calcined petroleum coke and carbon black, and filler is barium sulphate and expanded vermiculite; All raw materials have been pulverized as setting granularity.
2) compression molding: all above-mentioned raw materials are placed on mixing in high speed mixer and are placed on hot briquetting in the mould of regulation, heating-up temperature 140 DEG C, pressing pressure is 24MPa, adds hot pressing 120S;
3) heat treatment: the friction facing after shaping is removed burr and put and toast 20 hours at the temperature of 140 DEG C in an oven;
4) machining: the processing that milling friction facing after heat treatment being carried out outer arced surface, intrados and end face is cut and holed;
5) Checking of finished products: finally by the friction facing test package after processing process.
Graphite is crystalline flake graphite.
The granularity of graphite and calcined petroleum coke powdered carbon is 40-80 order;
The effect of described each material of example is as follows:
The effect of reinforcing fiber: the polishing machine improving friction resistance material.
In hot compression molding step, those skilled in the art will know that this step needs to carry out the demoulding, releasing agent is very important, and releasing agent adopts zine stearate: its granularity >=100 order, fusing point≤120 DEG C; Component content is about 80%; Stearic acid release agent zinc is mainly used as oiling agent and the releasing agent of phenolic resin.Zine stearate mainly increases the lubricity after resin solidification, and makes it be easy to the demoulding;
Bond is the composition (weight ratio of phenolic resin and antimony sulphide can be 4: 1-6: 1) of phenolic resin or phenolic resin and antimony sulphide, and phenolic resin is the resin material for being solidified by chemical reaction, as thermoset phenolic resin.
Embodiment 2
Preparation method is as shown in Figure 1:
1) take raw material to prepare burden in proportion: the Bond of 10%; The reinforcing fiber of 40%; The increasing of 20% rubs agent; The oiling agent of 10% and the filler of 20%, wherein, Bond comprises phenolic resin, reinforcing fiber is the composition of compound mineral fiber and glass fibre, increasing the agent that rubs is alumina powder or Frication powder, and oiling agent is graphite and calcined petroleum coke, and filler is nitrile rubber, tyre talc and barium sulphate; All raw materials have been pulverized as setting granularity.
2) compression molding: all above-mentioned raw materials are placed on mixing in high speed mixer and are placed on hot briquetting in the mould of regulation, heating-up temperature 180 DEG C, pressing pressure is 18MPa, adds hot pressing 180S;
3) heat treatment: the friction facing after shaping is removed burr and put and toast 16 hours at the temperature of 180 DEG C in an oven;
4) machining: the processing that milling friction facing after heat treatment being carried out outer arced surface, intrados and end face is cut and holed;
5) Checking of finished products: finally by the friction facing test package after processing process.
Embodiment 3
Preparation method is as shown in Figure 1:
1) take raw material to prepare burden in proportion: the Bond of 13%; The reinforcing fiber of 31%; The increasing of 12% rubs agent; The oiling agent of 13% and the filler of 31%, wherein, Bond comprises phenolic resin, reinforcing fiber is compound mineral fiber, ceramic fiber, glass fibre, organic fiber and Steel Fibre, their weight ratio is 20: 6: 6: 5: 3, and increase the composition that the agent that rubs is alumina powder and Frication powder, the weight ratio of alumina powder and Frication powder is 1: 2, oiling agent is the composition of graphite, calcined petroleum coke and carbon black, and the weight ratio of graphite, calcined petroleum coke and carbon black is 3: 2: 1; Filler is the composition of nitrile rubber, tyre talc, barium sulphate and expanded vermiculite, and the weight ratio of nitrile rubber, tyre talc, barium sulphate and expanded vermiculite is 5: 5: 18: 3.All raw materials have been pulverized as setting granularity.
2) compression molding: all above-mentioned raw materials are placed on mixing in high speed mixer and are placed on hot briquetting in the mould of regulation, heating-up temperature 160 DEG C, pressing pressure is 20MPa, adds hot pressing 160S;
3) heat treatment: the friction facing after shaping is removed burr and put and toast 18 hours at the temperature of 160 DEG C in an oven;
4) machining: the processing that milling friction facing after heat treatment being carried out outer arced surface, intrados and end face is cut and holed;
5) Checking of finished products: finally by the friction facing test package after processing process.
Graphite is crystalline flake graphite.
The granularity of graphite and calcined petroleum coke powdered carbon is 40-80 order.
The effect of reinforcing fiber: the polishing machine improving friction resistance material.
In hot compression molding step, those skilled in the art will know that this step needs to carry out the demoulding, releasing agent is very important, and releasing agent adopts zine stearate: its granularity >=100 order, fusing point≤120 DEG C; Component content is about 80%; Stearic acid release agent zinc is mainly used as oiling agent and the releasing agent of phenolic resin.Zine stearate mainly increases the lubricity after resin solidification, and makes it be easy to the demoulding;
Bond is the composition of phenolic resin or phenolic resin and antimony sulphide, and phenolic resin is the resin material for being solidified by chemical reaction, as thermoset phenolic resin.
The brake for cars friction facing of the present embodiment, its friction factor>=0.38, heats up 0.41; Cooling 0.42; When wear rate is within 300 DEG C≤0.15 (10
-7cm
3/ N.m); Weight/volume wearing and tearing≤5%.
Claims (7)
1. a brake for cars friction facing, is characterized in that, comprises the raw material of following weight percentage:
The Bond of 10-20%; The reinforcing fiber of 20-40%; The increasing of 10-20% rubs agent; The oiling agent of 10-20% and the filler of 20-40%, described Bond comprises phenolic resin; Described filler to be weight ratio be 5: 5: 18: 3 nitrile rubber, tyre talc, barium sulphate and expanded vermiculite composition; Increase the combination that the agent that rubs is aluminium oxide and Frication powder.
2. brake for cars friction facing according to claim 1, is characterized in that, described reinforcing fiber is two or more the combination in compound mineral fiber, ceramic fiber, glass fibre, organic fiber and Steel Fibre.
3. brake for cars friction facing according to claim 1, is characterized in that, described oiling agent is the combination of one or more in graphite, calcined petroleum coke and carbon black.
4. brake for cars friction facing according to claim 1, is characterized in that, described oiling agent is the composition of graphite, calcined petroleum coke and carbon black.
5. a preparation method for brake for cars friction facing, comprises the steps:
1) by the Bond of 10-20%; The reinforcing fiber of 20-40%; The increasing of 10-20% rubs agent; The oiling agent of 10-20% and the filler mixing of 20-40%, described Bond comprises phenolic resin; Described filler to be weight ratio be 5: 5: 18: 3 nitrile rubber, tyre talc, barium sulphate and expanded vermiculite composition; Increase the combination that the agent that rubs is aluminium oxide and Frication powder, mixture is placed in high speed mixer and stirs and evenly mixs;
2) material of mixing being placed in mould heats compressing, heating-up temperature 140-180 DEG C, and pressing pressure is 18-24MPa;
3) friction facing after shaping is incubated 16 ~ 20 hours at 140-180 DEG C;
4) milling that the friction facing of insulation sizing carries out outer arced surface, intrados and end face is cut make finished product with Drilling operation.
6. the preparation method of brake for cars friction facing according to claim 5, is characterized in that, described in add hot pressing time be 120-180s.
7. the preparation method of brake for cars friction facing according to claim 5, is characterized in that, heating-up temperature when described heating is compressing is 160 DEG C, and pressing pressure is 20MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210251505.6A CN102758870B (en) | 2012-07-20 | 2012-07-20 | A kind of brake for cars friction facing and preparation method thereof |
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| CN201210251505.6A CN102758870B (en) | 2012-07-20 | 2012-07-20 | A kind of brake for cars friction facing and preparation method thereof |
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| CN102758870A CN102758870A (en) | 2012-10-31 |
| CN102758870B true CN102758870B (en) | 2016-04-13 |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409105B (en) * | 2013-07-26 | 2016-06-08 | 安徽昕宏通用设备制造有限公司 | A kind of Brake pad friction material and preparation technology thereof |
| CN103436221A (en) * | 2013-07-26 | 2013-12-11 | 安徽昕宏通用设备制造有限公司 | Brake pad friction material and preparation technology thereof |
| CN103614114B (en) * | 2013-08-14 | 2015-07-22 | 十堰市九霄摩擦材料有限公司 | Friction material for automobile brake and recycling method therefor |
| CN103939512A (en) * | 2014-05-07 | 2014-07-23 | 南通万达摩擦材料有限公司 | Preparing method for clutch friction plate for passenger car |
| CN104533997A (en) * | 2014-12-11 | 2015-04-22 | 来安县隆华摩擦材料有限公司 | Caron fiber reinforced friction plate |
| CN107614920A (en) * | 2015-12-07 | 2018-01-19 | 安徽大富重工机械有限公司 | The preparation method of ceramic frication material, vehicle brake-holder block and vehicle brake-holder block |
| CN105864331B (en) * | 2016-06-01 | 2018-03-20 | 江苏金麦穗新能源科技股份有限公司 | A kind of building waste inserts brake block friction material production technology |
| CN107664169A (en) * | 2016-07-28 | 2018-02-06 | 常军 | The processing method of automobile brake sheet |
| CN107030455B (en) * | 2017-06-21 | 2023-06-02 | 西安蜂鸟精密机械有限公司 | Processing method of part filled with phenolic glass fiber molding compound series materials |
| CN108626279A (en) * | 2018-05-02 | 2018-10-09 | 南通新源特种纤维有限公司 | A kind of preparation method of brake for cars friction facing |
| CN109704638B (en) * | 2018-12-25 | 2021-03-26 | 桐庐宇鑫汽配有限公司 | Brake lining for automobile |
| CN110005736B (en) * | 2019-03-29 | 2021-04-13 | 上海壬丰新材料科技有限公司 | Light automobile brake pad with recyclable bottom plate and preparation method thereof |
| CN110628216A (en) * | 2019-08-13 | 2019-12-31 | 北京天仁道和新材料有限公司 | Friction material, friction lining and preparation method thereof |
| CN113881184A (en) * | 2021-10-27 | 2022-01-04 | 曲阜天博汽车制动器有限公司 | Formula preparation process and device for enhanced environment-friendly composite fiber friction material and friction lining |
| CN113864376B (en) * | 2021-10-27 | 2024-04-12 | 曲阜天博汽车制动器有限公司 | Process and device for preparing reinforced grinding machine composite friction material and friction lining formula |
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| CN101158383A (en) * | 2007-10-30 | 2008-04-09 | 徐州工业职业技术学院 | Brake block friction material |
| CN101487505A (en) * | 2009-02-23 | 2009-07-22 | 宁国飞鹰汽车零部件股份有限公司 | Asbestos-free metal-free composite lubrication type drum-shaped brake block for cars and method for producing the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1958648A (en) * | 2006-11-08 | 2007-05-09 | 信义集团公司 | Method for producing brake sheets of heavy load truck |
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Patent Citations (2)
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|---|---|---|---|---|
| CN101158383A (en) * | 2007-10-30 | 2008-04-09 | 徐州工业职业技术学院 | Brake block friction material |
| CN101487505A (en) * | 2009-02-23 | 2009-07-22 | 宁国飞鹰汽车零部件股份有限公司 | Asbestos-free metal-free composite lubrication type drum-shaped brake block for cars and method for producing the same |
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Effective date of registration: 20161017 Address after: 442003 No. 88 Xicheng Road, Hubei City, Shiyan Province Patentee after: HUBEI JIUXIAO AUTOMOBILE PARTS CO.,LTD. Address before: 442004 No. 88 Xicheng Road, Hubei City, Shiyan Province Patentee before: SHIYAN JIUXIAO FRICTION MATERIALS Co.,Ltd. |
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