CN105526286B - A kind of friction material and its friction plate and friction piece preparation method - Google Patents
A kind of friction material and its friction plate and friction piece preparation method Download PDFInfo
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Abstract
The present invention relates to a kind of friction materials, and by foam ferrous powder, binder and lubricant composition, on the basis of 100 parts by weight foam ferrous powders, the binder content is 7 ~ 17 parts by weight, and the lubricant content is 11 ~ 35 parts by weight.The invention further relates to one kind friction plate as made from above-mentioned friction material and preparation method thereof, the friction plate has density low using foam ferrous powder as material of main part, not heat fading, low noise, the good characteristic of wearability.The helper component added in the formula without steel fibre and to adjust steel fibre performance, and the dosage of binder is further reduced, simultaneously because foam ferrous powder is low in cost, and there is preferable economy.
Description
Technical field
The present invention relates to a kind of friction braking materials, and in particular to a kind of friction material using foam ferrous powder as main body.
Background technique
In friction material, with eliminating for asbestos, a variety of alternative fibers are widely adopted, and such as " semimetal " mixed type is braked
Piece (Semi-met), mainly using coarse steel fibre/steel wool as reinforcing fiber and important mixture, steel fibre/
Steel wool intensity with higher and thermal conductivity.It is generally necessary to which higher brake pressure completes same braking effect, especially
It is easily to cause the surface abrasion of biggish brake disc or brake drum in low temperature environment, while generating bigger noise and easily getting rusty.
In addition to the brake of " semimetal " mixed type, the also NAO(of asbestos brake lining is substituted without asbestos organic type) brake block.
Mainly using glass fibre, aramid fiber or carbon fiber etc. as reinforcement material.This brake block under low temperature or high temperature level all
It is able to maintain good braking effect, reduces abrasion, reduce noise, extend the service life of brake disc, but higher cost.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of not heat fading, low noise, wearability are good and low in cost
Friction material.
To solve the above problems, invention provides a kind of friction material, formula includes following component: foam ferrous powder, glue
Stick and lubricant；On the basis of 100 parts by weight foam ferrous powders, the binder content is 7 ~ 17 parts by weight, the lubricant
Content is 11 ~ 35 parts by weight.
In friction material formulation provided by the present invention based on foamed iron, the foamed iron is using pure iron as former material
Material, after crushing, magnetic separation, selection by winnowing, gradation, mixing, carry out high temperature foaming, be eventually fabricated it is coarse, loose, porous, have plasticity,
Low-density delays the porous material to get rusty.
Inventor has found that the foam ferrous powder is applied in friction material as main body with following spy by many experiments
Property: 1, humidification: with the foam ferrous powder of high-content instead of reinforcing materials such as steel fibres, since foam ferrous powder is with good
Plasticity, there is a good deformation in pressing process, and the combination effect of other materials is good, and pressure is bigger, and humidification is bigger；2,
Reduce consumption of binder: foam ferrous powder is connected with each other combination under the effect of the pressure can play the function of certain equivalent binder
Effect, can reduce the usage amount of binder in this way；3, noise is small, comfortable foot feeling: foam ferrous powder has porosity, in friction catch
In have certain buffering, the effect of flexible and flexible adjustment, improve the comfort level of vehicle, and reduce noise；4, metal sparks are prevented
And damascene: foam ferrous powder changes the structure of metal in the production process, be different from fe, with antithesis friction
Shi Buhui generates spark and damascene.
The present invention also provides a kind of friction plate, the friction plate is made by friction material among the above.
The friction plate obtained through the invention has density low, not heat fading, low noise, the good characteristic of wearability.This is matched
The helper component added in side without steel fibre and to adjust steel fibre performance, and the dosage of binder is further reduced,
Simultaneously because foam ferrous powder is low in cost, make the friction plate that there is preferable economy.Again, material used in this formula
It is formulated more simple, main component aluminium/calcium constituent for iron and on a small quantity, to will not make in the production and use process to environment
It is more environmentally friendly at burden.
The present invention also provides a kind of preparation method of friction plate, preparation process is comprised the steps of:
(1) a certain proportion of foam ferrous powder, binder, lubricant and antirust agent mixture are put into batch mixer, obtained
Pulverulent mixture；
(2) prefabricated steel back is put into hot press die, and pulverulent mixture described in appropriate step (1) is taken to put into
In hot press die, prefabricated component is obtained after hot pressing under certain temperature and pressure；
(3) the prefabricated component in step (2) after hot pressing is put into baking oven, is toasted at a certain temperature；
(4) friction plate is obtained after the product in step (3) being carried out grinding spraying.
Technical solution of the present invention is related to a kind of friction material, and the friction material includes following component: foam ferrous powder, glue
Stick and lubricant, on the basis of the foam ferrous powder of 100 parts by weight, the binder content is 7 ~ 17 parts by weight, the lubrication
Agent content is 11 ~ 35 parts by weight.The foam ferrous powder be it is commercially available, under preferable case, in foam ferrous powder Fe content be greater than 95wt%,
Total carbon content is less than 0.03wt%, apparent density 1.5-2%, is resin-like porous particle, partial size -20 ~+120 mesh.
The content of foam ferrous powder should control in a certain range, if too high levels will lead to the dosage of other function material
It is too low and decline comprehensive performance.Inventor is found through experiments that, if material of main part too high levels, product coefficient of friction increases
Height, while noise and wear rate also will increase；And material of main part content it is too low when, product hardness decline, frictional strength is inadequate,
Demand can not be able to satisfy.This is solved the problems, such as by reinforcing fibers such as addition aramid fiber, polypropylene fibre, steel fibres often；It is same in this
When be also required to further increase the dosage of binder, and will lead to after binder increase heat fading effect rising.
Under preferable case, the binder is one or more of in resin and rubber powder；The resin is phenolic resin；Institute
Stating rubber powder is one or more of nitrile rubber or butadiene-styrene rubber.
Under preferable case, the resin is boron bakelite resin, and heat resistance, bonding mechanical property compare phenolic resin
It is good, so that character of heat-fading, restorability, polishing machine and the mechanical performance of material is further improved.
Under preferable case, the rubber powder partial size is 80 ~ 100 mesh.Rubber powder has as the elastic filler in friction material
Noise reduction effect.
Under preferable case, the lubricant is one or more of graphite, coke, Frication powder.Inventor passes through experiment
It was found that the comprehensive performance of friction material can be improved after the graphite of proper proportion, coke are added in friction material, it is beneficial to prevent
Metal adhesion, improves frictional behaviour, the surface metal transfer for reducing abrasion, stablizing coefficient of friction, the antithesis for preventing friction material,
Antithesis is protected, braking shake, the generation of noise are reduced.
Under preferable case, antirust auxiliary agent is also contained in the friction material, the antirust auxiliary agent is aluminium hydroxide, hydroxide
One or more of calcium.The hydroxide inserted can improve the pH value of friction material, and a certain amount of alkaline matter can be into
One step prevents from getting rusty, and plays the role of fire-retardant in braking process and prevents friction material from aoxidizing, while can also improve the soft of binder
Change point.The higher rust-proof effect of the content of hydroxide is better, but when too high levels, can not balancing material overall performance, cause
Other performances, such as the reduction of frictional behaviour.Therefore, it is necessary to dosages to control in a certain range, with the bubble of 100 parts by weight
On the basis of foam iron powder, the antirust auxiliary agent content is that 6 ~ 17 parts by weight are preferred.
Under preferable case, with the total weight of friction material, on the basis of the foam ferrous powder of 100 parts by weight, the bonding
Agent content is 10 ~ 16 parts by weight, and the lubricant content is 14 ~ 27 parts by weight, and the antirust auxiliary agent content is 7 ~ 16 parts by weight.
The friction plate that foam ferrous powder is produced in range can take into account stable friction factor, no heat fading and low noise, service life long performance
Characteristic can achieve at low cost, excellent combination property, can compare favourably with iron-based powder metallurgy friction material.
Technical solution of the present invention further relates to a kind of friction plate, is prepared by above-mentioned friction material.
Technical solution of the present invention further relates to a kind of friction piece preparation method, will can obtain after friction material and steel back hot pressing
Friction plate is obtained, is specifically comprised the following steps:
(1), by after 10 ~ 60min of mixing in a certain proportion of above-mentioned friction material mixture investment batch mixer, obtain
Pulverulent mixture；
(2) it will be put into hot press die after a face adhesive coating that steel back is connect with friction material, then take appropriate step
(1) in the pulverulent mixture investment hot press die described in, prefabricated component is obtained after suppressing under certain temperature and pressure；
(3) pressed prefabricated component is put into baking oven in step (2), is toasted at a certain temperature；
(4) friction plate is obtained after the product in step (3) being carried out grinding spraying
Hot press pressure is 5-15MPa in step (2), and temperature is 135 ~ 155 DEG C, and the pressing time is preferred in 90-250S.Institute
Stating adhesive is the common adhesive of those skilled in the art, be can be obtained by commercially available, such as likes that jail reaches 64-1, western nation 62W, iron
Anchor 204 etc..
The baking process of step (3) prefabricated component is that staged heating and staged cool down, 100 ~ 140 DEG C of low temperature, high temperature 200
~230℃.When staged heats up, heating rate is 10 DEG C/h, keeps the temperature 1.5 ~ 2.5h after every 20 DEG C of heating；When staged low temperature, drop
Warm rate is 10 DEG C/h, keeps the temperature 1.5 ~ 2.5h after every 20 DEG C of cooling.
With reference to embodiments, the present invention is further described in detail, but not limited to this.
Specific embodiment
All raw materials in heretofore described embodiment are for example non-to be refered in particular to, and is commercial product.
Embodiment 1
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 0.65g, rubber
Powder 0.97g, graphite 1.13g, petroleum coke 0.97g, Frication powder 0.81g, aluminium hydroxide 1.61g.
The preparation of friction plate:
(1) above-mentioned friction material mixture is put into 600L vertical shaft batch mixer, obtain pulverulent mixture；
(2) steel back is put into hot press die, then taken in the investment mold of pulverulent mixture described in appropriate step (1),
145 DEG C, 10MPa, lower compacting 150S obtain prefabricated component；
(3) pressed prefabricated component is put into baking oven and toasts in step (2), Flue curing parameter are as follows: and 120 DEG C of low temperature, high temperature
220 DEG C, when heating, heating rate is 10 DEG C/h, keeps the temperature 2h after every 20 DEG C of heating；When cooling, 10 DEG C/h of every cooling, every cooling 20
2h is kept the temperature after DEG C.
(4) friction plate is obtained after the product in step (3) being carried out grinding spraying.
Embodiment 2
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 0.37g, 90 mesh
Acrylonitrile-butadiene rubber powder 0.88g, graphite 0.74g, petroleum coke 0.74g, Frication powder 0.51g, aluminium hydroxide 1.47g.
The preparation method is the same as that of Example 1 for friction plate.
Embodiment 3
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 0.43g, rubber
Powder 0.71g, graphite 0.86g, petroleum coke 0.71g, Frication powder 0.43g, aluminium hydroxide 1.15g.
The preparation method is the same as that of Example 1 for friction plate.
Embodiment 4
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 0.56g, rubber
Powder 0.56g, graphite 0.97g, petroleum coke 0.42g, Frication powder 0.28g, aluminium hydroxide 1.11g.
The preparation method is the same as that of Example 1 for friction plate.
Embodiment 5
Friction material described in the present embodiment, it is composed of the following components with friction material total weight: foam ferrous powder 10, boron
Phenolic resin 0.53g, rubber powder 0.67g, graphite 0.93g, petroleum coke 0.27g, Frication powder 0.27g, aluminium hydroxide 0.67g.
The preparation method is the same as that of Example 1 for friction plate.
Embodiment 6
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 0.5g, rubber powder
0.63g, graphite 0.88g, petroleum coke 0.25g, Frication powder 0.25g.Without antirust auxiliary agent.
The preparation method is the same as that of Example 1 for friction plate.
Embodiment 7
Friction material described in the present embodiment, it is composed of the following components: foam ferrous powder 10g, boron bakelite resin 1.2g, graphite
0.93g, petroleum coke 0.53g, aluminium hydroxide 0.67g.
Comparative example 1
Friction material described in this comparative example, it is composed of the following components with friction material total weight: foam ferrous powder 32%, glass
Glass powder 15%, calcirm-fluoride 15%, acicular wollastonite 14%, phenolic resin 7%, graphite 6%, antimony trisulfide 6%, rubber powder 5%.
The preparation method is the same as that of Example 1 for friction plate.
Comparative example 2
Friction material described in this comparative example, it is composed of the following components with friction material total weight: barium sulfate 20wt%, steel
22 wt% of fiber, 19 wt% of iron powder, 6 wt% of pulverized limestone, 3 wt% of fiber, 15 wt% of resin, 3 wt% of rubber powder, 5 wt% of graphite,
1 wt% of Frication powder, 1 wt% of coke.
The preparation method is the same as that of Example 1 for friction plate.
Performance test:
1, constant speed friction testing: use GB5763-2008 " brake spacer for automobile " the method, detection embodiment 1 ~
6 and comparative example 1 ~ 2 friction material preparation friction plate frictional behaviour.Test result such as table 1:
Table 1
It can be seen that foam ferrous powder in friction material from 1 test result of table all to show to compare reason within the scope of 60-80%
The frictional behaviour thought.The product that different characteristics can be adjusted out according to customer demand, in wearability, rust-preventing characteristic, low noise
A certain performance product more outstanding.
In comparative example 1, friction plate totally shows biggish coefficient of friction and wear rate；It is visible apparent in comparative example 2
Heat fading phenomenon, coefficient of friction is low under high temperature, and wear rate is big.
2, salt mist experiment: using GB6458-86 " salt spray test national standard " the method, molten with the NaCl of pH6.5 ~ 7.2
Liquid detects the corrosion resistance of the friction plate of the friction material preparation of embodiment 1 ~ 6 and comparative example 1 ~ 2.Test result such as table 2:
Table 2
Not adding aluminium hydroxide in embodiment 6 from can be seen that in 2 test result of table, just having corrosion existing after salt mist experiment 36h
As.There is apparent rust-proofing ability after being added to aluminium hydroxide in embodiment 1 ~ 5, salt mist experiment is in 96h non-corroding phenomenon.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments, and it is extended from this it is obvious variation or
It changes among still in the invention scope of protection of the claims.
Claims (9)
1. a kind of friction material, which is characterized in that consist of the following compositions: foam ferrous powder, binder, lubricant and antirust help
Agent；On the basis of the foam ferrous powder of 100 parts by weight, the binder content is 10~16 parts by weight, and the lubricant content is
14~27 parts by weight, the antirust auxiliary agent content are 7~16 parts by weight.
2. friction material according to claim 1, which is characterized in that the binder is a kind of or several in resin and rubber powder
Kind；The resin is phenolic resin；The rubber powder is one or more of nitrile rubber or butadiene-styrene rubber.
3. friction material according to claim 2, which is characterized in that the resin is boron bakelite resin.
4. friction material according to claim 2, which is characterized in that the rubber powder partial size is 80~100 mesh.
5. friction material according to claim 1, which is characterized in that the lubricant is graphite, coke, one in Frication powder
Kind is several.
6. friction material according to claim 1, which is characterized in that the antirust auxiliary agent is aluminium hydroxide, in calcium hydroxide
One or more.
7. a kind of friction plate, which is characterized in that friction material used in the friction plate is claim 1-6 any one institute
It states.
8. a kind of friction piece preparation method, which is characterized in that after any friction material of claim 1-6 and steel back hot pressing
It can be obtained friction plate.
9. rub piece preparation method according to claim 8, which is characterized in that covered in the one side that steel back is connect with friction material
There is adhesive.
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| CN106594133B (en) * | 2016-12-28 | 2020-01-07 | 北京天宜上佳高新材料股份有限公司 | Non-metal-inlaid brake pad and production process thereof |
| CN106589802A (en) * | 2017-02-20 | 2017-04-26 | 马乐群 | Disc brake pad |
| AT522252B1 (en) * | 2019-03-13 | 2022-06-15 | Miba Frictec Gmbh | friction assembly |
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| CN1072689C (en) * | 1995-08-23 | 2001-10-10 | 叶家铃 | Method for producing sound- and water-absorbing friction material |
| CN100398865C (en) * | 2006-07-26 | 2008-07-02 | 张新波 | Foam ferrous powder braking plate |
| CN101555915B (en) * | 2009-01-25 | 2013-06-12 | 瑞阳汽车零部件（仙桃）有限公司 | High-performance semi-metallic brake pad |
| CN102619914B (en) * | 2012-03-15 | 2016-08-10 | 临安华龙摩擦材料有限公司 | Disc type brake block of petroleum and preparation method thereof |
| CN102900795A (en) * | 2012-09-18 | 2013-01-30 | 临安华龙摩擦材料有限公司 | Winch brake pad and manufacture method thereof |
| CN103335043B (en) * | 2013-06-08 | 2016-03-30 | 杭州克尔菲利科技有限公司 | Offshore oil drilling platform rig disc brake pad and preparation method thereof |
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| "无机填料对制动摩擦材料摩擦磨损性能的影响";鲁知音，管琪明，何林，刘勇;《矿产综合利用》;20071231(第6期);第33-36页 |
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