CN108730385A - A kind of brake block and its processing method of low noise - Google Patents
A kind of brake block and its processing method of low noise Download PDFInfo
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- CN108730385A CN108730385A CN201810580585.7A CN201810580585A CN108730385A CN 108730385 A CN108730385 A CN 108730385A CN 201810580585 A CN201810580585 A CN 201810580585A CN 108730385 A CN108730385 A CN 108730385A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Compositions of linings; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0052—Carbon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/006—Materials; Production methods therefor containing fibres or particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0082—Production methods therefor
- F16D2200/0086—Moulding materials together by application of heat and pressure
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Abstract
The present invention relates to automobile mechanical fields, provide a kind of brake block of low noise, including the following raw material：Glue spraying alumina silicate fibre, glass fibre, butadiene acrylonitrile rubber powder, tyre talc, cashew nut shell oil Frication powder, tung oil modified phenolic resin, red copper fiber, white black mountain flour, diatomite, apocynum fibre, iron oxide green, potassium feldspar, petroleum coke, graphite, expanded perlite, floating bead, barium sulfate, boron nitride, soft magnetic material.The present invention also provides a kind of processing methods of the brake block of low noise.The advantage of the invention is that：In the research process of formula, it by largely testing, is reasonably arranged in pairs or groups to Multiple components, it is ensured that the advantages of each material is fully played in the material, make each raw material that can not only mutually make up the deficiency of its respective performance, can also generate better performance because of mutual cooperation；The present invention in use, has friction coefficient that is high and stablizing, low wear rate, while in brake process, showing lower noise.
Description
Technical field
The present invention relates to automobile mechanical field more particularly to the brake blocks and its processing method of a kind of low noise.
Background technology
Brake block is also brake rubber block.In the brake system of automobile, brake block is the breaking piece of most critical, all brakes
The quality of effect is all that brake block plays a decisive role.
Automotive brake pads is asbestos-type brake pad earlier, but asbestos are carcinogens by medical field confirmation.Each time
As many as millions of asbestos fibres will be dispersed into air by brake, brake block, and acicular fiber easily enters lung
And stop, it causes to irritate, can finally lead to the generation of lung cancer；In addition, there is also another major issues for asbestos-type brake pad：
Since asbestos are adiabatic, the capacity of heat transmission is particularly poor, and after Reusability, brake can make heat heap in brake block
Come, after brake block heating, its braking ability will change, and generate same friction and brake force may require that more
Touch on the brake number, if brake block reaches certain temperature, will lead to brake failure.
With the development of modern automobile industry with the raising of social environment consciousness, current Automotive Friction Material material,
Manufacturing process etc. all achieves great progress, occurs the brake that many novel asbestos-free friction materials make successively
Piece, such as semi-metallic brake pad, it has higher temperature control capacity and higher brake temperature, and it is fast, accurate that position is eaten in brake.Therefore, half
Metal brake block has been increasingly becoming one of the asbestos-free friction material that China mainly promotes and applies.However, some semimetals brake
The formula design of piece often carries certain blindness, thus some intrinsic disadvantages of semi-metallic brake pad is caused to be amplified, such as
It is larger to brake drum or brake disc damage, and noise is higher etc. when brake.
Accordingly, it is badly in need of a kind of brake with friction coefficient, low wear rate and low noise advantage high and stablize at present
Piece and its processing method.
Invention content
Technical problem to be solved by the present invention lies in provide it is a kind of have friction coefficient that is high and stablizing, low wear rate with
And the brake block and its processing method of low noise advantage.
The present invention solves above-mentioned technical problem using following technical scheme：
A kind of brake block of low noise, includes the raw material of following parts by weight：12-18 parts of glue spraying alumina silicate fibre, glass
1-4 parts of fiber, 1-4 parts of butadiene acrylonitrile rubber powder, 1-4 parts of tyre talc, 3-4 parts of cashew nut shell oil Frication powder, tung oil modified phenolic resin 5-12
Part, 1-2 parts of red copper fiber is black mountain flour 1-2 parts white, 1-2 parts of diatomite, 8-10 parts of apocynum fibre, 1-2 parts of iron oxide green, potassium
1-2 parts of feldspar, 2-3 parts of petroleum coke, 2-3 parts of graphite, 1-2 parts of expanded perlite, 1-2 parts of floating bead, 1-2 parts of barium sulfate, nitridation
1-2 parts of boron, 2-5 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite,
Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2In permalloy powder
It is one or more kinds of.
One of preferred embodiment as the present invention, includes the raw material of following parts by weight：15 parts of glue spraying alumina silicate fibre, glass
2.5 parts of glass fiber, 2.5 parts of butadiene acrylonitrile rubber powder, 2.5 parts of tyre talc, 3.5 parts of cashew nut shell oil Frication powder, tung oil modified phenolic resin 8.5
Part, 1.5 parts of red copper fiber, white 1.5 parts of black mountain flour, 1.5 parts of diatomite, 9 parts of apocynum fibre, 1.5 parts of iron oxide green, potassium feldspar
1.5 parts, 2.5 parts of petroleum coke, 2.5 parts of graphite, 1.5 parts of expanded perlite, 1.5 parts of floating bead, 1.5 parts of barium sulfate, boron nitride 1.5
Part, 3.5 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, ferronickel
Oxysome, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2One kind in permalloy powder
Or it is a variety of.
One of preferred embodiment as the present invention, includes the raw material of following parts by weight：13 parts of glue spraying alumina silicate fibre, glass
2 parts of glass fiber, 2 parts of butadiene acrylonitrile rubber powder, 2 parts of tyre talc, 3.3 parts of cashew nut shell oil Frication powder, 7 parts of tung oil modified phenolic resin, red copper
1.3 parts of fiber, white 1.3 parts of black mountain flour, 1.3 parts of diatomite, 8.5 parts of apocynum fibre, 1.3 parts of iron oxide green, potassium feldspar 1.3
Part, 2.3 parts of petroleum coke, 2.3 parts of graphite, 1.3 parts of expanded perlite, 1.3 parts of floating bead, 1.3 parts of barium sulfate, 1.3 parts of boron nitride,
3 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, Ni ferrite,
Manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2It is a kind of or more in permalloy powder
Kind.
One of preferred embodiment as the present invention, includes the raw material of following parts by weight：17 parts of glue spraying alumina silicate fibre, glass
3 parts of glass fiber, 3 parts of butadiene acrylonitrile rubber powder, 3 parts of tyre talc, 3.9 parts of cashew nut shell oil Frication powder, 10 parts of tung oil modified phenolic resin, red copper
1.9 parts of fiber, white 1.9 parts of black mountain flour, 1.9 parts of diatomite, 9.5 parts of apocynum fibre, 1.9 parts of iron oxide green, potassium feldspar 1.9
Part, 2.9 parts of petroleum coke, 2.9 parts of graphite, 1.9 parts of expanded perlite, 1.9 parts of floating bead, 1.9 parts of barium sulfate, 1.9 parts of boron nitride,
3.8 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite, ferronickel oxygen
Body, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2One kind in permalloy powder or
Person is a variety of.
As one of the preferred embodiment of the present invention, the graphite be specially it is chemically treated after graphite, processing procedure is such as
Under：The graphite of above-mentioned parts by weight is added in the concentrated sulfuric acid of 96-98%, is stirred to react under vacuum condition, is then slowly dripped
Add hydrogen peroxide, and controlling reaction temperature is 30-40 DEG C, reacts 25-30min；It is centrifuged after the completion of reaction, obtained solid is with clearly
It is washed to neutrality, 1-2h is then dried in 80-100 DEG C of baking oven.
One of preferred embodiment as the present invention, the graphite treatment process is specific as follows：By the stone of above-mentioned parts by weight
Ink is added in 98% concentrated sulfuric acid, is stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is
35 DEG C, react 28min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 90 DEG C of baking ovens
1.5h。
As one of the preferred embodiment of the present invention, the apocynum fibre is specially that modified treated that bluish dogbane is fine
Dimension, processing procedure are as follows：
A. apocynum fibre is put into the container of 20-25 DEG C of water temperature and impregnates 12-14h, it is de- to apocynum fibre after taking-up
Water process；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 13-15%, in 20-25
1-3h is stirred at a temperature of DEG C, and then apocynum fibre is put into the acetum that mass concentration is 2-4% to remaining in fibre
The lye in dimension table face is neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.6-2.8MPa, dwell time 100-150s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
A kind of processing method of the brake block of above-mentioned low noise, includes the following steps：
(1) dispensing：
Each raw material is weighed by above-mentioned parts by weight, and carries out mixed ingredients, is stirred 30-35min；
(2) hot-forming：
Using hot pressing one-shot forming technique；Wherein, pressure 100-200Mpa, hot pressing time 6-7min, upper mold hot pressing temperature
175-185 DEG C, middle 155-165 DEG C of mould hot pressing temperature, 135-145 DEG C of lower die hot pressing temperature；
(3) it is heat-treated：
Equipment for Heating Processing uses heat treatment box, 150-180 DEG C for the treatment of temperature, time 4-8h；
(4) it is ground：
It is ground using disk；
(5) it sprays：
Using electrostatic painting process, spraying equipment rotating speed 800-900rpm/min, 160-165 DEG C of environment temperature.
One of preferred embodiment as the present invention, hot-forming hot pressing temperature is specially in the step (2)：Upper mold degree
180 DEG C, 160 DEG C of middle mould, 140 DEG C of lower die heat.
One of preferred embodiment as the present invention, the actual temp that heat treatment box is heat-treated in the step (3) is
160 DEG C, time 6h.
As one of the preferred embodiment of the present invention, disc grinder is used in the step (4), parallelism of products 0.14mm,
And tolerance is less than 0.02mm, material plane degree is 0.1mm, and tolerance is less than 0.01mm.
In the present invention the effect of each raw material：
Glue spraying alumina silicate fibre：The noise that brake pad material is sent out by braking can be absorbed well；In addition, also having good
Good high temperature resistance and extremely low thermal coefficient, invest material surface energy and effectively reduce other cryogenic materials in material
Character of heat-fading and dilatancy, further increase stability.
Glass fibre：With heatproof height, the feature heat-insulated, sound-proofing is good.
Butadiene acrylonitrile rubber powder：With good water resistance, air-tightness and excellent adhesive property.
Tyre talc：As elastic filler, play increase mill, noise abatement effect.
Cashew nut shell oil Frication powder：Be process by cashew nut shell oil, in use it is non-volatile go out any harmful substance, be a kind of new
Type environment-friendly products, after brake block mixes suitable Frication powder, in 300 DEG C or more hot operations, brake block stable friction factor,
Heat expansion is minimum, and when brake not will produce " locking " phenomenon.
Tung oil modified phenolic resin：By tung oil-modified phenolic resin, hardness reduces, and toughness improves, and heat resistance also has
It is improved, thermal decomposition activity is more unmodified to promote about 70%.
Red copper fiber：The advantages that red copper fiber has the hardness of metal simple-substance copper, wear-resistant, and thermal conductivity is good, in brake block
Middle addition red copper fiber can improve the stability of friction coefficient, reduce the effect of wear rate.
White black mountain flour：With lubricating action, the lubricity of reinforcing material entirety.
Apocynum fibre：Apocynum fibre through be overpressurized with after the modification of moment release of pressure, since fiber is expanded
Effect, fibrous inside crystal region are destroyed, and the amorphous regions of fiber increased, and then fibre tensile strength is made to increase,
Hardness reduces, and on the other hand, treated fibrous inner structure changes, and fiber macromolecular chain upstream separates out more parents
Aqueous group improves the wearability of fiber, heat resistance, and Young's modulus is also improved to a certain extent, and Young's modulus is
Characterization fibrous material increases in elastic deformation stage, the ratio of stress and strain, specific surface area, and adsorptivity is improved；It is logical
It crosses modified apocynum fibre and has substantially conformed to requirement as brake block fibre reinforced materials.
Iron oxide green：A kind of reactant by ferrous oxide and ferric oxide is a kind of green or red green tiny solid
Body particle has preferable corrosion resistance.
Potassium feldspar：Improve the heat resistanceheat resistant decline performance of resin-based materials.
Petroleum coke, graphite：A certain proportion of petroleum coke, graphite are added in the formula materials of brake block, makes material
With perfect comprehensive performance, be conducive to prevent metal from adhering, improve frictional behaviour；In addition, the gas sky rate of petroleum coke is higher,
The friction coefficient for further increasing material, reduces brake noise, the heat fading of material when alleviating high temperature.
Expanded perlite：On the one hand it is used as filler material, on the other hand also there is preferable sound absorption.
Floating bead：Adjustable frictional behaviour, increases the porosity, reduces density, mitigates brake noise and vibrations.
Barium sulfate：Chemical property is stable, fusing point is high；Barium sulfate is added in brake pad material, friction material can be improved
Thermal stability, enhances the heat resistanceheat resistant degenerative of brake block, while improving density of material.
Boron nitride：With good lubricity, heat resistance and thermal conductivity, thermal conductivity is suitable with stainless steel；And heat resistanceheat resistant
Pinking is good, and coefficient of thermal expansion is small, and chemical stability is high, can keep the friction stability of brake pad material, improves the anti-of material
Burn performance.
Soft magnetic material：The soft magnetic material of addition is ferromagnetic substance so that automobile soft magnetism brake block has larger magnetic
Conductance and saturation induction density provide most basic material conditions for the magnetic field control of drag friction process；Utilize magnetic field
Controllability and its actively impact to drag friction behavior, automobile soft magnetism brake block is applied to the master of drag friction process
Dynamic control is remarkably improved the brake efficiency of friction brake with reliability and can greatly enhance the comfort of driving.
The present invention compared with prior art the advantages of be：In the research process of formula, by largely testing, to a variety of
Ingredient is reasonably arranged in pairs or groups, it is ensured that the advantages of each material is fully played in the material, keeps each raw material mutual
The deficiency for making up its respective performance, can also generate better performance because of mutual cooperation；The present invention in use, has height
And friction coefficient, the low wear rate of stabilization, while in brake process, showing lower noise.
Specific implementation mode
It elaborates below to the embodiment of the present invention, the present embodiment is carried out lower based on the technical solution of the present invention
Implement, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following implementation
Example.
Embodiment 1
A kind of brake block of low noise of the present embodiment, includes the raw material of following parts by weight：Glue spraying alumina silicate fibre 12
Part, 1 part of glass fibre, 1 part of butadiene acrylonitrile rubber powder, 1 part of tyre talc, 3 parts of cashew nut shell oil Frication powder, 5 parts of tung oil modified phenolic resin, purple
1 part of copper fiber, white 1 part of black mountain flour, 1 part of diatomite, 8 parts of apocynum fibre, 1 part of iron oxide green, 1 part of potassium feldspar, petroleum coke 2
Part, 2 parts of graphite, 1 part of expanded perlite, 1 part of floating bead, 1 part of barium sulfate, 1 part of boron nitride, 2 parts of soft magnetic material；Soft magnetic material
Specially：Nickel-zinc ferrite, manganese-zinc ferrite, Mn ferrite mixture.
Wherein, graphite be specially it is chemically treated after graphite, processing procedure is as follows：The graphite of above-mentioned parts by weight is added
Enter into 96% concentrated sulfuric acid, be stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 30
DEG C, react 25min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 80 DEG C of baking ovens
1h。
Apocynum fibre is specially modified treated apocynum fibre, and processing procedure is as follows：
A. apocynum fibre is put into the container of 20 DEG C of water temperature and impregnates 12h, to apocynum fibre dehydration after taking-up；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 13%, in 20 DEG C of temperature
Degree is lower to stir 1h, then apocynum fibre is put into the alkali in the acetum that mass concentration is 2% to remaining in fiber surface
Liquid is neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.6MPa, dwell time 100s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
Embodiment 2
A kind of brake block of low noise of the present embodiment, includes the raw material of following parts by weight：Glue spraying alumina silicate fibre 18
Part, 4 parts of glass fibre, 4 parts of butadiene acrylonitrile rubber powder, 4 parts of tyre talc, 4 parts of cashew nut shell oil Frication powder, 12 parts of tung oil modified phenolic resin,
2 parts of red copper fiber, white 2 parts of black mountain flour, 2 parts of diatomite, 10 parts of apocynum fibre, 2 parts of iron oxide green, 2 parts of potassium feldspar, petroleum coke
3 parts of charcoal, 3 parts of graphite, 2 parts of expanded perlite, 2 parts of floating bead, 2 parts of barium sulfate, 2 parts of boron nitride, 5 parts of soft magnetic material；Soft magnetism
Material is specially：Hydroxy iron powder, iron-cobalt-nickel powder, Ni81Mo2Permalloy mixture of powders.
Wherein, graphite be specially it is chemically treated after graphite, processing procedure is as follows：The graphite of above-mentioned parts by weight is added
Enter into 98% concentrated sulfuric acid, be stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 40
DEG C, react 30min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 100 DEG C of baking ovens
2h。
Apocynum fibre is specially modified treated apocynum fibre, and processing procedure is as follows：
A. apocynum fibre is put into the container of 25 DEG C of water temperature and impregnates 14h, to apocynum fibre dehydration after taking-up；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 15%, in 25 DEG C of temperature
Degree is lower to stir 3h, then apocynum fibre is put into the alkali in the acetum that mass concentration is 4% to remaining in fiber surface
Liquid is neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.8MPa, dwell time 150s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
Embodiment 3
A kind of brake block of low noise of the present embodiment, includes the raw material of following parts by weight：Glue spraying alumina silicate fibre 15
Part, 2.5 parts of glass fibre, 2.5 parts of butadiene acrylonitrile rubber powder, 2.5 parts of tyre talc, 3.5 parts of cashew nut shell oil Frication powder, tung oil-modified phenolic aldehyde tree
8.5 parts of fat, 1.5 parts of red copper fiber, white 1.5 parts of black mountain flour, 1.5 parts of diatomite, 9 parts of apocynum fibre, 1.5 parts of iron oxide green,
1.5 parts of potassium feldspar, 2.5 parts of petroleum coke, 2.5 parts of graphite, 1.5 parts of expanded perlite, 1.5 parts of floating bead, 1.5 parts of barium sulfate, nitrogen
Change 1.5 parts of boron, 3.5 parts of soft magnetic material；Soft magnetic material is specially：Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder
Mixture.
Wherein, graphite be specially it is chemically treated after graphite, processing procedure is as follows：The graphite of above-mentioned parts by weight is added
Enter into 98% concentrated sulfuric acid, be stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 35
DEG C, react 28min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 90 DEG C of baking ovens
1.5h。
Apocynum fibre is specially modified treated apocynum fibre, and processing procedure is as follows：
A. apocynum fibre is put into the container of 23 DEG C of water temperature and impregnates 13h, to apocynum fibre dehydration after taking-up；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 14%, in 23 DEG C of temperature
Degree is lower to stir 2h, then apocynum fibre is put into the alkali in the acetum that mass concentration is 3% to remaining in fiber surface
Liquid is neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.7MPa, dwell time 125s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
Embodiment 4
A kind of brake block of low noise of the present embodiment, includes the raw material of following parts by weight：Glue spraying alumina silicate fibre 13
Part, 2 parts of glass fibre, 2 parts of butadiene acrylonitrile rubber powder, 2 parts of tyre talc, 3.3 parts of cashew nut shell oil Frication powder, 7 parts of tung oil modified phenolic resin,
1.3 parts of red copper fiber, white 1.3 parts of black mountain flour, 1.3 parts of diatomite, 8.5 parts of apocynum fibre, 1.3 parts of iron oxide green, potassium feldspar
1.3 parts, 2.3 parts of petroleum coke, 2.3 parts of graphite, 1.3 parts of expanded perlite, 1.3 parts of floating bead, 1.3 parts of barium sulfate, boron nitride 1.3
Part, 3 parts of soft magnetic material；Soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite mixture.
Wherein, graphite be specially it is chemically treated after graphite, processing procedure is as follows：The graphite of above-mentioned parts by weight is added
Enter into 97% concentrated sulfuric acid, be stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 32
DEG C, react 26min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 85 DEG C of baking ovens
1.2h。
Apocynum fibre is specially modified treated apocynum fibre, and processing procedure is as follows：
A. apocynum fibre is put into the container of 22 DEG C of water temperature and impregnates 13h, to apocynum fibre dehydration after taking-up；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 14%, in 22 DEG C of temperature
Degree is lower to stir 1.5h, and then apocynum fibre is put into the acetum that mass concentration is 2.5% to remaining in fiber surface
Lye neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.7MPa, dwell time 120s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
Embodiment 5
A kind of brake block of low noise of the present embodiment, includes the raw material of following parts by weight：Glue spraying alumina silicate fibre 17
Part, 3 parts of glass fibre, 3 parts of butadiene acrylonitrile rubber powder, 3 parts of tyre talc, 3.9 parts of cashew nut shell oil Frication powder, tung oil modified phenolic resin 10
Part, 1.9 parts of red copper fiber, white 1.9 parts of black mountain flour, 1.9 parts of diatomite, 9.5 parts of apocynum fibre, 1.9 parts of iron oxide green, potassium is long
1.9 parts of stone, 2.9 parts of petroleum coke, 2.9 parts of graphite, 1.9 parts of expanded perlite, 1.9 parts of floating bead, 1.9 parts of barium sulfate, boron nitride
1.9 parts, 3.8 parts of soft magnetic material；Soft magnetic material is specially：Mn ferrite, Ni ferrite, manganese Ni ferrite, iron sial are soft
Magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2Permalloy mixture of powders.
Wherein, graphite be specially it is chemically treated after graphite, processing procedure is as follows：The graphite of above-mentioned parts by weight is added
Enter into 98% concentrated sulfuric acid, be stirred to react under vacuum condition, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 38
DEG C, react 29min；It is centrifuged after the completion of reaction, obtained solid is washed till neutrality with clear water, is then dried in 95 DEG C of baking ovens
1.8h。
Apocynum fibre is specially modified treated apocynum fibre, and processing procedure is as follows：
A. apocynum fibre is put into the container of 24 DEG C of water temperature and impregnates 14h, to apocynum fibre dehydration after taking-up；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 14%, in 24 DEG C of temperature
Degree is lower to stir 2.5h, and then apocynum fibre is put into the acetum that mass concentration is 3.5% to remaining in fiber surface
Lye neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing
For 2.8MPa, dwell time 140s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly,
The modification of apocynum fibre is realized by the pressure difference inside and outside the drastic change of temperature and container；
E. the flame retardant treatment on apocynum fibre surface is carried out.
Embodiment 6
The processing method of the brake block of low noise, includes the following steps in a kind of above-described embodiment of the present embodiment：
(1) dispensing：
Each raw material is weighed by above-mentioned parts by weight, and carries out mixed ingredients, is stirred 30min；
(2) hot-forming：
Using hot pressing one-shot forming technique；Wherein, pressure 100Mpa, hot pressing time 6min, 175 DEG C of upper mold hot pressing temperature,
155 DEG C of middle mould hot pressing temperature, 135 DEG C of lower die hot pressing temperature；
(3) it is heat-treated：
Equipment for Heating Processing uses heat treatment box, 150 DEG C for the treatment of temperature, time 4h；
(4) it is ground：
It being ground using disk, parallelism of products 0.14mm, and tolerance is less than 0.02mm, material plane degree is 0.1mm,
And tolerance is less than 0.01mm；
(5) it sprays：
Using electrostatic painting process, spraying equipment rotating speed 800rpm/min, 160 DEG C of environment temperature.
Embodiment 7
The processing method of the brake block of low noise, includes the following steps in a kind of above-described embodiment of the present embodiment：
(1) dispensing：
Each raw material is weighed by above-mentioned parts by weight, and carries out mixed ingredients, is stirred 35min；
(2) hot-forming：
Using hot pressing one-shot forming technique；Wherein, pressure 200Mpa, hot pressing time 7min, 185 DEG C of upper mold hot pressing temperature,
165 DEG C of middle mould hot pressing temperature, 145 DEG C of lower die hot pressing temperature；
(3) it is heat-treated：
Equipment for Heating Processing uses heat treatment box, 180 DEG C for the treatment of temperature, time 8h；
(4) it is ground：
It being ground using disk, parallelism of products 0.14mm, and tolerance is less than 0.02mm, material plane degree is 0.1mm,
And tolerance is less than 0.01mm；
(5) it sprays：
Using electrostatic painting process, spraying equipment rotating speed 900rpm/min, 165 DEG C of environment temperature.
Embodiment 8
The processing method of the brake block of low noise, includes the following steps in a kind of above-described embodiment of the present embodiment：
(1) dispensing：
Each raw material is weighed by above-mentioned parts by weight, and carries out mixed ingredients, is stirred 32min；
(2) hot-forming：
Using hot pressing one-shot forming technique；Wherein, pressure 150Mpa, hot pressing time 6.5min, upper mold hot pressing temperature 180
DEG C, 160 DEG C of middle mould hot pressing temperature, 140 DEG C of lower die hot pressing temperature；
(3) it is heat-treated：
Equipment for Heating Processing uses heat treatment box, 160 DEG C for the treatment of temperature, time 6h；
(4) it is ground：
It being ground using disk, parallelism of products 0.14mm, and tolerance is less than 0.02mm, material plane degree is 0.1mm,
And tolerance is less than 0.01mm；
(5) it sprays：
Using electrostatic painting process, spraying equipment rotating speed 850rpm/min, 163 DEG C of environment temperature.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (10)
1. a kind of brake block of low noise, which is characterized in that include the raw material of following parts by weight：Glue spraying alumina silicate fibre 12-
18 parts, 1-4 parts of glass fibre, 1-4 parts of butadiene acrylonitrile rubber powder, 1-4 parts of tyre talc, 3-4 parts of cashew nut shell oil Frication powder, tung oil-modified phenolic aldehyde
5-12 parts of resin, 1-2 parts of red copper fiber is black mountain flour 1-2 parts white, 1-2 parts of diatomite, 8-10 parts of apocynum fibre, iron oxide green
1-2 parts, 1-2 parts of potassium feldspar, 2-3 parts of petroleum coke, 2-3 parts of graphite, 1-2 parts of expanded perlite, 1-2 parts of floating bead, barium sulfate 1-2
Part, 1-2 parts of boron nitride, 2-5 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite, manganese
Ferrite, Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2Permalloy powder
One or more of end.
2. the brake block of low noise according to claim 1, which is characterized in that include the raw material of following parts by weight：Spray
15 parts of glue alumina silicate fibre, 2.5 parts of glass fibre, 2.5 parts of butadiene acrylonitrile rubber powder, 2.5 parts of tyre talc, 3.5 parts of cashew nut shell oil Frication powder,
8.5 parts of tung oil modified phenolic resin, 1.5 parts of red copper fiber, white 1.5 parts of black mountain flour, 1.5 parts of diatomite, 9 parts of apocynum fibre,
1.5 parts of iron oxide green, 1.5 parts of potassium feldspar, 2.5 parts of petroleum coke, 2.5 parts of graphite, 1.5 parts of expanded perlite, 1.5 parts of floating bead,
1.5 parts of barium sulfate, 1.5 parts of boron nitride, 3.5 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, MnZn
Ferrite, Mn ferrite, Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2
One or more of permalloy powder.
3. the brake block of low noise according to claim 1, which is characterized in that include the raw material of following parts by weight：Spray
13 parts of glue alumina silicate fibre, 2 parts of glass fibre, 2 parts of butadiene acrylonitrile rubber powder, 2 parts of tyre talc, 3.3 parts of cashew nut shell oil Frication powder, tung oil changes
Property 7 parts of phenolic resin, 1.3 parts of red copper fiber, white 1.3 parts of black mountain flour, 1.3 parts of diatomite, 8.5 parts of apocynum fibre, iron oxide
Green 1.3 parts, 1.3 parts of potassium feldspar, 2.3 parts of petroleum coke, 2.3 parts of graphite, 1.3 parts of expanded perlite, 1.3 parts of floating bead, barium sulfate
1.3 parts, 1.3 parts of boron nitride, 3 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite,
Mn ferrite, Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2Permalloy
One or more of powder.
4. the brake block of low noise according to claim 1, which is characterized in that include the raw material of following parts by weight：Spray
17 parts of glue alumina silicate fibre, 3 parts of glass fibre, 3 parts of butadiene acrylonitrile rubber powder, 3 parts of tyre talc, 3.9 parts of cashew nut shell oil Frication powder, tung oil changes
Property 10 parts of phenolic resin, 1.9 parts of red copper fiber, white 1.9 parts of black mountain flour, 1.9 parts of diatomite, 9.5 parts of apocynum fibre, iron oxide
Green 1.9 parts, 1.9 parts of potassium feldspar, 2.9 parts of petroleum coke, 2.9 parts of graphite, 1.9 parts of expanded perlite, 1.9 parts of floating bead, barium sulfate
1.9 parts, 1.9 parts of boron nitride, 3.8 parts of soft magnetic material；Wherein, soft magnetic material is specially：Nickel-zinc ferrite, manganese-zinc ferrite
Body, Mn ferrite, Ni ferrite, manganese Ni ferrite, iron-silicon-aluminum soft magnetic powder, hydroxy iron powder, iron-cobalt-nickel powder and Ni81Mo2Perm
One or more of alloy powder.
5. according to the brake block of any low noises of claim 1-4, which is characterized in that the graphite is specially through chemistry
Treated graphite, processing procedure are as follows：The graphite of above-mentioned parts by weight is added in the concentrated sulfuric acid of 96-98%, vacuum item
It is stirred to react under part, hydrogen peroxide is then slowly added dropwise, and controlling reaction temperature is 30-40 DEG C, reacts 25-30min；Reaction is completed
After centrifuge, obtained solid is washed till neutrality with clear water, and 1-2h is then dried in 80-100 DEG C of baking oven.
6. according to the brake block of any low noises of claim 1-4, which is characterized in that the apocynum fibre is specially
Modified treated apocynum fibre, processing procedure are as follows：
A. apocynum fibre is put into the container of 20-25 DEG C of water temperature and impregnates 12-14h, after taking-up to apocynum fibre dehydration at
Reason；
B. the apocynum fibre after dehydration is put into the NaOH aqueous slkalis that mass concentration is 13-15%, at 20-25 DEG C
At a temperature of stir 1-3h, then by apocynum fibre be put into mass concentration be 2-4% acetum in remaining in fiber table
The lye in face is neutralized；
C., apocynum fibre after alkali process is put into progress pressurize processing, dwell pressure in the heat-insulation pressure keeping container of sealing is
2.6-2.8MPa, dwell time 100-150s；
D. it is passed through liquid nitrogen into cooling cylinder, heat-insulation pressure keeping container is made to cool down rapidly, then open heat-insulation pressure keeping container rapidly, relied on
The drastic change of temperature and the pressure difference inside and outside container realize the modification of apocynum fibre；
E. the flame retardant treatment on apocynum fibre surface is carried out.
7. a kind of processing method of the brake block of low noise as described in claim 1-6 is any, which is characterized in that including as follows
Step：
(1) dispensing：
Each raw material is weighed by above-mentioned parts by weight, and carries out mixed ingredients, is stirred 30-35min；
(2) hot-forming：
Using hot pressing one-shot forming technique；Wherein, pressure 100-200Mpa, hot pressing time 6-7min, upper mold hot pressing temperature 175-
185 DEG C, middle 155-165 DEG C of mould hot pressing temperature, 135-145 DEG C of lower die hot pressing temperature；
(3) it is heat-treated：
Equipment for Heating Processing uses heat treatment box, 150-180 DEG C for the treatment of temperature, time 4-8h；
(4) it is ground：
It is ground using disk；
(5) it sprays：
Using electrostatic painting process, spraying equipment rotating speed 800-900rpm/min, 160-165 DEG C of environment temperature.
8. the processing method of the brake block of low noise according to claim 7, which is characterized in that hot in the step (2)
Molded hot pressing temperature is specially：180 DEG C of upper mold degree, 160 DEG C of middle mould, 140 DEG C of lower die heat.
9. the processing method of the brake block of low noise according to claim 7, which is characterized in that hot in the step (3)
The actual temp that treatment box is heat-treated is 160 DEG C, time 6h.
10. the processing method of the brake block of low noise according to claim 7, which is characterized in that adopted in the step (4)
With disc grinder, parallelism of products 0.14mm, and tolerance are less than 0.02mm, and material plane degree is 0.1mm, and tolerance be less than
0.01mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580585.7A CN108730385A (en) | 2018-06-07 | 2018-06-07 | A kind of brake block and its processing method of low noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810580585.7A CN108730385A (en) | 2018-06-07 | 2018-06-07 | A kind of brake block and its processing method of low noise |
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| Publication Number | Publication Date |
|---|---|
| CN108730385A true CN108730385A (en) | 2018-11-02 |
Family
ID=63932790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810580585.7A Withdrawn CN108730385A (en) | 2018-06-07 | 2018-06-07 | A kind of brake block and its processing method of low noise |
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| Country | Link |
|---|---|
| CN (1) | CN108730385A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372911A (en) * | 2018-12-20 | 2019-02-22 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of low abrasion disk brake pad and preparation method thereof |
| CN112570707A (en) * | 2020-01-22 | 2021-03-30 | 沈阳市沈新粉末冶金制品有限公司 | Iron-based ferrite material and preparation method and application thereof |
-
2018
- 2018-06-07 CN CN201810580585.7A patent/CN108730385A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372911A (en) * | 2018-12-20 | 2019-02-22 | 湖北飞龙摩擦密封材料股份有限公司 | A kind of low abrasion disk brake pad and preparation method thereof |
| CN109372911B (en) * | 2018-12-20 | 2020-05-22 | 湖北飞龙摩擦密封材料股份有限公司 | Low-wear disc type friction plate and preparation method thereof |
| CN112570707A (en) * | 2020-01-22 | 2021-03-30 | 沈阳市沈新粉末冶金制品有限公司 | Iron-based ferrite material and preparation method and application thereof |
| CN112570707B (en) * | 2020-01-22 | 2023-04-07 | 沈阳市沈新粉末冶金制品有限公司 | Iron-based ferrite material and preparation method and application thereof |
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Application publication date: 20181102 |