CN106654779A - Material for preparing brush for treadmill motors - Google Patents
Material for preparing brush for treadmill motors Download PDFInfo
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- CN106654779A CN106654779A CN201510741702.XA CN201510741702A CN106654779A CN 106654779 A CN106654779 A CN 106654779A CN 201510741702 A CN201510741702 A CN 201510741702A CN 106654779 A CN106654779 A CN 106654779A
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- brush
- graphite
- powder
- spark
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/02—Details for dynamo electric machines
- H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
- H01R39/20—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof
- H01R39/22—Contacts for co-operation with commutator or slip-ring, e.g. contact brush characterised by the material thereof incorporating lubricating or polishing ingredient
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- Motor Or Generator Current Collectors (AREA)
Abstract
The invention provides a material for preparing a brush for treadmill motors. The material comprises matrix powder and binder. The matrix powder contains graphite, polyphenyl ester resin, polytetrafluoroethylene, and metal powder. The brush material uses binder resin. A motor brush prepared has excellent wear resistance, low noise and long service life and is environment-friendly, and the wear resistance is increased by more than 10%. By adding metal powder to the brush material, a treadmill brush prepared has high current carrying capacity and high practical efficiency, the efficiency of the brush in the process of motor running is improved, and environmental protection and energy saving are achieved. As molybdenum disulfide is used as additive in the brush material, a brush motor prepared has good commutation performance, high stability, and strong anti-interference ability. By adding flexible graphite to the brush material, mechanical spark in the using process of the brush is inhibited, the spark grade is low in the running process of the brush, there is no spark in a no-load state, the brush spark is reduced by at least one grade, and the service life of the brush is prolonged.
Description
Technical field
The present invention relates to a kind of running machine motor brush, more particularly to it is a kind of electromechanical for preparing energy-saving running
The material of machine brush, belongs to brush material field.
Background technology
Brush is a kind of conductive component that electrical connection is formed for contacting with commutator or slip ring in motor, is electricity
The important composition part of machine.As the sliding contact body for importing and exporting electric current, its conduction, heat conduction and greasy property
Well, and with certain mechanical strength and the instinct for suppressing commutation property spark.It is widely used in various friendships
Dc generator, synchronous motor, storage battery dc motor, crane motor collecting ring, various electric welding machine etc.,
Almost all of direct current generator and commutating machine all use brush.
With science and technology development, the species of motor and the working condition for using it is more and more diversified, thus need
There is various types of brush to meet the various requirement of motor, therefore the species of brush is also with electric machine industry
Development and it is more and more.
At present the classification method of brush has following four kinds：(1) by the soft or hard of material can be divided into soft brush,
Middle hard brush and hard brush；(2) steam turbine generator brush, steel rolling can be divided into by the use object of brush
It is brush for electromachine, traction electric machine brush, automobile and tractor brush, domestic electric appliance motor brush, electronic
Instrument brush, electric motor of automobile brush, aircrafts electric machinery brush etc.；(3) it is divided into black by the color of brush
Brush (being made with pure carbon graphite material) and color brush (being made with the metal materials such as copper and graphite)；(4)
Can be divided into electrographite brush, electrographite brush, metal-graphite brush, simple metal brush by the material difference of brush.
Family expenses running machine motor is typically direct current generator, and direct current generator is safer, often safeguards without Jing, makes an uproar
Signal to noise ratio alternating current generator is little, and output is stable.Running machine motor is because of the needs of its applied environment, it is desirable to which brush possesses suppression
Spark ability processed is good, low brush noise, high working efficiency the advantages of, concrete following points are required：(1) make
With life-span length and do not wear and tear commutator, does not make commutator the phenomenons such as cut, injustice, ablation, wire drawing occur；
(2) with good commutation ability, and energy loss is little；(3) when brush runs, not overheated, noise is little,
It is not damaged, shunt welding nondiscolouring, not ablation；(4) in running, can quickly be formed in commutator face
One layer of uniform light coppery oxide-film.
However, at present general domestic brush operational efficiency is relatively low, stability is poor, domestic carbon brush factory cannot meet race
The energy-efficient requirement of Step motor.
The content of the invention
The invention aims to the technical problem for solving above-mentioned running electromechanical brush presence provides a kind of for making
The material of standby running machine motor brush, the brush resistance rate prepared using material of the present invention is moderate, anti-wear performance
Good, commutation ability is good, grade of spark is low, it is often more important that with efficiency high, noise be low, product stability is good
The features such as.
The invention provides a kind of material for preparing running machine motor brush, including：
Matrix powder and binding agent；
Described matrix powder includes graphite, polybenzoate resin, polytetrafluoroethylene (PTFE) and metal dust.
Wherein, in described matrix powder graphite, polybenzoate resin, polytetrafluoroethylene (PTFE) and metal dust weight portion
Proportioning is 70-95:1-3:2-4:5-15.
Particularly, the graphite includes native graphite and soft graphite, the native graphite and the soft graphite
Weight be 65-85:5-10.
Especially, the native graphite, soft graphite, polybenzoate resin, polytetrafluoroethylene (PTFE) and metal dust
Weight is 65-85:5-10:1-3:2-4:5-15.
Particularly, the granularity of the native graphite is 100-300 mesh, and phosphorus content >=99% fixes carbon content >=60%,
Moisture≤1%, ash≤1%, volatile matter≤10%.
Especially, the granularity of the soft graphite (EG) be 100-200 mesh, carbon content >=99%, ash≤1%,
Moisture content≤1%, soft graphite (EG) has extremely strong resistance to pressure, pliability, plasticity and self lubricity,
There is very high electrical conductivity and radioresistance characteristic, and it is nontoxic, any carcinogenic substance is not contained, environment is safe from harm.
Particularly, polybenzoate (PHB) resin is aromatic polyester liquid crystal polymer, by P-hydroxybenzoic acid benzene
Ester polycondensation is formed, and its molecular backbone contains to oxygen benzoyl constitutional repeating unit, and degree of crystallinity is very high, self lubricity
Good, heat endurance is high, with preferable mechanical strength and processing characteristics.
Especially, the coefficient of friction of polytetrafluoroethylene (PTFE) (PTFE) is minimum, and arc resistance is higher, with excellent
Greasy property.
Wherein, the metal dust includes one or more in copper powder, silver powder, tungsten powder and glass putty.
Particularly, the granularity of the metal dust is 200-400 mesh.
Especially, the loose specific weight of the copper powder is 0.8-1.0g/cm3, purity >=99.9%.
Particularly, the loose specific weight of the silver powder is 0.8-1.2g/cm3, purity >=99.9%.
Especially, the loose specific weight of the tungsten powder is 4.5-5.5g/cm3, purity >=99.9%.
Particularly, the loose specific weight of the glass putty is 4.5-5.5g/cm3, purity >=99.9%.
Wherein, described matrix powder is also comprising additive and curing agent.
Particularly, the native graphite, soft graphite, polybenzoate resin, polytetrafluoroethylene (PTFE), metal dust,
The weight of additive and curing agent is 65-85:5-10:1-3:2-4:5-15:1-5:0.5-3.
Especially, the native graphite, soft graphite, polybenzoate resin, polytetrafluoroethylene (PTFE), metal dust,
Additive, the weight of curing agent are preferably 65-75:6-8:1-3:2-4:8-12:1.5-5:1-3.
Wherein, the additive selects molybdenum bisuphide and aluminum phosphate.
Particularly, the granularity of the molybdenum bisuphide is 3000-4000 mesh, and purity is 98%.
Especially, the crystal formation of the aluminum phosphate is α types.
Particularly, the weight of the molybdenum bisuphide and aluminum phosphate is 2:1.
Additive molybdenum bisuphide and aluminum phosphate have excellent greasy property, and coefficient of friction is relatively low, and commutation ability is good.
Especially, the curing agent is epoxy curing agent.
Particularly, the curing agent is preferably epoxy resin latent curing agent T-31 curing agent.
Wherein, the weight of described matrix powder and binding agent is 79.5-125:10-30.
Particularly, the weight of described matrix powder and binding agent is preferably 84.5-110:15-25.
Wherein, the binding agent using it is front be first dissolved in acetone make binder solution again with described matrix powder
Material mixing, for preparing the running machine motor brush.
Particularly, the binding agent is the bisphenol A-type solid epoxy of intermediate molecular weight.
Advantages of the present invention and Advantageous Effects are as follows：
1st, brush material composition of the present invention is reasonable, scientific formulation, the motor prepared using resin glue
Brush anti-wear performance is excellent, noise is low, long service life, environmental protection, anti-wear performance improve more than 10%.
2nd, add metal dust in brush material of the present invention, made by running electromechanical brush carry current capacity it is good,
Practical efficiency high, improves the efficiency of motor operation course center brush, environmental protection and energy saving.
3rd, molybdenum bisuphide is selected in brush material of the invention as additive so that the brushless motor of preparation is changed
Good to performance, stability is high, anti-interference strong.
4th, soft graphite is added in brush material of the invention, it is suppressed that occur machinery fire during brush use
Flower, grade of spark is low in brush running, and no-spark when unloaded, spark reduces at least one grade,
Extend the service life of brush.
5th, running machine motor prepared by application material of the present invention is run with brush suitable for high pressure (DC180V)
Machine is used, and can be widely used in the body-building apparatus such as DC 90V/180V running machine motors, fitness massager motor electricity
On machine.
Specific embodiment
The present invention is expanded on further with reference to specific embodiment, advantages of the present invention and feature will be with retouching
State and apparent.But these embodiments are only exemplary, do not constitute any restriction to the scope of the present invention.
It will be understood by those skilled in the art that without departing from the spirit and scope of the invention can be to skill of the present invention
The details and form of art scheme is modified or is replaced, but these modifications and replacement each fall within the protection model of the present invention
In enclosing.
Embodiment 1
1st, get the raw materials ready (part) according to following weight：
Wherein, the metal dust is the mixture of copper powder and silver powder, and its weight ratio is 3：1, granularity is 200-400
Mesh；Additive includes molybdenum bisuphide and aluminum phosphate, and the wherein weight ratio of molybdenum bisuphide and aluminum phosphate is 2:1；
Binding agent selects bisphenol A type epoxy resin, and its epoxide number is 0.25-0.45；The curing agent selects asphalt mixtures modified by epoxy resin
Fat latent curing agent T-31 curing agent (Changzhou mountain peak Chemical Co., Ltd.).
2nd, brush preparing raw material mixture
By native graphite, soft graphite, polybenzoate resin (PHB), polytetrafluoroethylene (PTFE), additive, solidification
Agent is placed in kneading pot, opens the tumbler of kneading pot, is mixed under room temperature condition and stop after 1.5h, is obtained
Matrix powder；Bisphenol A type epoxy resin is dissolved in acetone, is uniformly mixed so as to dissolved, made
Obtain binder solution；Binder solution is added in matrix powder and is stirred, be well mixed, stir 1.5h, mixed
Uniform rear taking-up material is closed, is placed at room temperature, placed 3h and treat that acetone volatilizees so that be residual without acetone in material
Stay, brush raw mixture is obtained.
3rd, brush raw mixture is placed in baking oven first carries out drying and processing 12h at 50 DEG C, further
Acetone is removed, the raw mixture without acetone is obtained；Then break process is carried out to the material after drying, is broken
Broken material crosses 60 mesh sieves, and brush raw mixture powder, brush raw mixture powder size≤60 mesh is obtained.
4th, obtained brush raw mixture powder is placed in compacting tool set, is carried out at compacting using hydraulic press
Reason, it is 1.88-1.92g/cm that bulk density is obtained3Brush blank.
5th, brush blank is placed in baking oven, heat cure process is carried out to brush blank, will be dried first in 5h
Case temperature is increased to 230 DEG C from room temperature, and wherein heating rate is 46 DEG C/h；Then protect at a temperature of 230 DEG C
4h is held, the brush first product after heat cure is processed is obtained；
6th, to the brush first product after curing process is cut, grinding machine, drill, fill out the machineries such as line, spot welding
Running machine motor brush is obtained final product after procedure of processing.
7th, according to JB/T8133.14-1999's (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of running machine motor brush；According to JB/T8133.2-1999 (electric carbon product physics
Chemical property test method resistivity) method determine running machine motor brush resistivity；Using
The Shore hardness of HS-19CTV type hardness tester machine private wipers, the results are shown in Table 1；
The wear rate of the obtained running machine motor brush of long duration test controller test is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》The obtained treadmill of test
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of the obtained running machine motor brush of test, test result is shown in Table 4.
Embodiment 2
1st, get the raw materials ready (part) according to following weight：
Wherein, the metal dust is the mixture of copper powder and tungsten powder, and its weight ratio is 3：1, granularity is 200-400
Mesh；Additive includes molybdenum bisuphide and aluminum phosphate, and the wherein weight ratio of molybdenum bisuphide and aluminum phosphate is 2:1；
Binding agent selects bisphenol A type epoxy resin, and its epoxide number is 0.25-0.45；The curing agent selects asphalt mixtures modified by epoxy resin
Fat latent curing agent T-31 curing agent (Changzhou mountain peak Chemical Co., Ltd.).
2nd, brush preparing raw material mixture
By native graphite, soft graphite, polybenzoate resin (PHB), polytetrafluoroethylene (PTFE), additive, solidification
Agent is placed in kneading pot, opens the tumbler of kneading pot, is mixed under room temperature condition and stop after 1.5h, is obtained
Matrix powder；Bisphenol A type epoxy resin is dissolved in acetone, is uniformly mixed so as to dissolved, made
Obtain binder solution；Binder solution is added in matrix powder and is stirred, be well mixed, stir 1.5h, mixed
Uniform rear taking-up material is closed, is placed at room temperature, placed 2-4h and treat that acetone volatilizees so that without acetone in material
Residual, is obtained brush raw mixture.
3rd, brush raw mixture is placed in baking oven first carries out drying and processing 11h at 52 DEG C, further
Acetone is removed, the raw mixture without acetone is obtained；Then break process is carried out to the material after drying, is broken
Broken material crosses 60 mesh sieves, and brush raw mixture powder, brush raw mixture powder size≤60 mesh is obtained.
4th, obtained brush raw mixture powder is placed in compacting tool set, is carried out at compacting using hydraulic press
Reason, it is 1.85-1.88g/cm that bulk density is obtained3Brush blank.
5th, brush blank is placed in baking oven, heat cure process is carried out to brush blank, will first in 5.5h
Oven temperature is increased to 235 DEG C from room temperature, and wherein heating rate is 42.8 DEG C/h；Then in 235 DEG C of temperature
Lower holding 4.5h, is obtained the brush first product after heat cure is processed；
6th, to the brush first product after curing process is cut, grinding machine, drill, fill out the machineries such as line, spot welding
Running machine motor brush is obtained final product after procedure of processing.
7th, according to JB/T8133.14-1999's (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of running machine motor brush；According to JB/T8133.2-1999 (electric carbon product physics
Chemical property test method resistivity) method determine running machine motor brush resistivity；Using
The Shore hardness of HS-19CTV type hardness tester machine private wipers, the results are shown in Table 1；
The wear rate of the obtained running machine motor brush of long duration test controller test is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》The obtained treadmill of test
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of the obtained running machine motor brush of test, test result is shown in Table 4.
Embodiment 3
1st, get the raw materials ready (part) according to following weight：
Wherein, the metal dust is the mixture of copper powder and glass putty, and its weight ratio is 3：1, granularity is 200-400
Mesh；Additive includes molybdenum bisuphide and aluminum phosphate, and the wherein weight ratio of molybdenum bisuphide and aluminum phosphate is 2:1；
Binding agent selects bisphenol A type epoxy resin, and its epoxide number is 0.25-0.45；The curing agent selects asphalt mixtures modified by epoxy resin
Fat latent curing agent T-31 curing agent (Changzhou mountain peak Chemical Co., Ltd.).
2nd, brush preparing raw material mixture
By native graphite, soft graphite, polybenzoate resin (PHB), polytetrafluoroethylene (PTFE), additive, solidification
Agent is placed in kneading pot, opens the tumbler of kneading pot, is mixed under room temperature condition and stop after 1.5h, is obtained
Matrix powder；Bisphenol A type epoxy resin is dissolved in acetone, is uniformly mixed so as to dissolved, made
Obtain binder solution；Binder solution is added in matrix powder and is stirred, be well mixed, stir 1.5h, mixed
Uniform rear taking-up material is closed, is placed at room temperature, placed 2-4h and treat that acetone volatilizees so that without acetone in material
Residual, is obtained brush raw mixture.
3rd, brush raw mixture is placed in baking oven first carries out drying and processing 13h at 48 DEG C, further
Acetone is removed, the raw mixture without acetone is obtained；Then break process is carried out to the material after drying, is broken
Broken material crosses 60 mesh sieves, and brush raw mixture powder, brush raw mixture powder size≤60 mesh is obtained.
4th, obtained brush raw mixture powder is placed in compacting tool set, is carried out at compacting using hydraulic press
Reason, it is 1.86-1.90g/cm that bulk density is obtained3Brush blank.
5th, brush blank is placed in baking oven, heat cure process is carried out to brush blank, will be dried first in 4h
Case temperature is increased to 225 DEG C from room temperature, and wherein heating rate is 56.25 DEG C/h；Then at a temperature of 225 DEG C
3h is kept, the brush first product after heat cure is processed is obtained；
6th, to the brush first product after curing process is cut, grinding machine, drill, fill out the machineries such as line, spot welding
Running machine motor brush is obtained final product after procedure of processing.
7th, according to JB/T8133.14-1999's (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of running machine motor brush；According to JB/T8133.2-1999 (electric carbon product physics
Chemical property test method resistivity) method determine running machine motor brush resistivity；Using
The Shore hardness of HS-19CTV type hardness tester machine private wipers, the results are shown in Table 1；
The wear rate of the obtained running machine motor brush of long duration test controller test is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》The obtained treadmill of test
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of the obtained running machine motor brush of test, test result is shown in Table 4.
Embodiment 4
1st, get the raw materials ready (part) according to following weight：
Wherein, the metal dust is the mixture of glass putty and silver powder, and its weight ratio is 2：2, granularity is 200-400
Mesh；Additive includes molybdenum bisuphide and aluminum phosphate, and the wherein weight ratio of molybdenum bisuphide and aluminum phosphate is 2:1；
Binding agent selects bisphenol A type epoxy resin, and its epoxide number is 0.25-0.45；The curing agent selects asphalt mixtures modified by epoxy resin
Fat latent curing agent T-31 curing agent (Changzhou mountain peak Chemical Co., Ltd.).
2nd, brush preparing raw material mixture
By native graphite, soft graphite, polybenzoate resin (PHB), polytetrafluoroethylene (PTFE), additive, solidification
Agent is placed in kneading pot, opens the tumbler of kneading pot, is mixed under room temperature condition and stop after 1.5h, is obtained
Matrix powder；Bisphenol A type epoxy resin is dissolved in acetone, is uniformly mixed so as to dissolved, made
Obtain binder solution；Binder solution is added in matrix powder and is stirred, be well mixed, stir 1.5h, mixed
Uniform rear taking-up material is closed, is placed at room temperature, placed 2-4h and treat that acetone volatilizees so that without acetone in material
Residual, is obtained brush raw mixture.
3rd, brush raw mixture is placed in baking oven first carries out drying and processing 14h at 45 DEG C, further
Acetone is removed, the raw mixture without acetone is obtained；Then break process is carried out to the material after drying, is broken
Broken material crosses 60 mesh sieves, and brush raw mixture powder, brush raw mixture powder size≤60 mesh is obtained.
4th, obtained brush raw mixture powder is placed in compacting tool set, is carried out at compacting using hydraulic press
Reason, it is 1.90-1.94g/cm that bulk density is obtained3Brush blank.
5th, brush blank is placed in baking oven, heat cure process is carried out to brush blank, will be dried first in 6h
Case temperature is increased to 240 DEG C from room temperature, and wherein heating rate is 40 DEG C/h；Then protect at a temperature of 240 DEG C
5h is held, the brush first product after heat cure is processed is obtained；
6th, to the brush first product after curing process is cut, grinding machine, drill, fill out the machineries such as line, spot welding
Running machine motor brush is obtained final product after procedure of processing.
7th, according to JB/T8133.14-1999's (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of running machine motor brush；According to JB/T8133.2-1999 (electric carbon product physics
Chemical property test method resistivity) method determine running machine motor brush resistivity；Using
The Shore hardness of HS-19CTV type hardness tester machine private wipers, the results are shown in Table 1；
The wear rate of the obtained running machine motor brush of long duration test controller test is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》The obtained treadmill of test
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of the obtained running machine motor brush of test, test result is shown in Table 4.
Embodiment 5
1st, get the raw materials ready (part) according to following weight：
Wherein, the metal dust is the mixture of glass putty and tungsten powder, and its weight ratio is 2：2, granularity is 200-400
Mesh；Additive includes molybdenum bisuphide and aluminum phosphate, and the wherein weight ratio of molybdenum bisuphide and aluminum phosphate is 2:1；
Binding agent selects bisphenol A type epoxy resin, and its epoxide number is 0.25-0.45；The curing agent selects asphalt mixtures modified by epoxy resin
Fat latent curing agent T-31 curing agent (Changzhou mountain peak Chemical Co., Ltd.).
2nd, brush preparing raw material mixture
By native graphite, soft graphite, polybenzoate resin (PHB), polytetrafluoroethylene (PTFE), additive, solidification
Agent is placed in kneading pot, opens the tumbler of kneading pot, is mixed under room temperature condition and stop after 1.5h, is obtained
Matrix powder；Bisphenol A type epoxy resin is dissolved in acetone, is uniformly mixed so as to dissolved, made
Obtain binder solution；Binder solution is added in matrix powder and is stirred, be well mixed, stir 1.5h, mixed
Uniform rear taking-up material is closed, is placed at room temperature, placed 2-4h and treat that acetone volatilizees so that without acetone in material
Residual, is obtained brush raw mixture.
3rd, brush raw mixture is placed in baking oven first carries out drying and processing 10h at 55 DEG C, further
Acetone is removed, the raw mixture without acetone is obtained；Then break process is carried out to the material after drying, is broken
Broken material crosses 60 mesh sieves, and brush raw mixture powder, brush raw mixture powder size≤60 mesh is obtained.
4th, obtained brush raw mixture powder is placed in compacting tool set, is carried out at compacting using hydraulic press
Reason, it is 1.92-1.95g/cm that bulk density is obtained3Brush blank.
5th, brush blank is placed in baking oven, heat cure process is carried out to brush blank, will be dried first in 4h
Case temperature is increased to 220 DEG C from room temperature, and wherein heating rate is 55 DEG C/h；Then protect at a temperature of 220 DEG C
4h is held, the brush first product after heat cure is processed is obtained；
6th, to the brush first product after curing process is cut, grinding machine, drill, fill out the machineries such as line, spot welding
Running machine motor brush is obtained final product after procedure of processing.
7th, according to JB/T8133.14-1999's (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of running machine motor brush；According to JB/T8133.2-1999 (electric carbon product physics
Chemical property test method resistivity) method determine running machine motor brush resistivity；Using
The Shore hardness of HS-19CTV type hardness tester machine private wipers, the results are shown in Table 1；
The wear rate of the obtained running machine motor brush of long duration test controller test is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》The obtained treadmill of test
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of the obtained running machine motor brush of test, test result is shown in Table 4.
Reference examples
With commercially available running machine motor (HX-852B, DC180V/1.5HP) with brush as reference examples.
According to the side of JB/T8133.14-1999 (electric carbon product physical and chemical performance test method bulk density)
Method determines the bulk density of reference examples running machine motor brush；According to JB/T8133.2-1999 (electric carbon products
Physical and chemical performance test method resistivity) method determine reference examples running machine motor brush resistivity；
The Shore hardness of reference examples brush is tested using HS-19CTV type hardness testers machine, 1 is the results are shown in Table；
The wear rate that long duration test controller tests reference examples running machine motor brush is loaded using FNC-5 types,
Result of the test is shown in Table 2；
With reference to national standard《Electric rotating machine quota and performance (GB/T 755-2000)》Test reference examples treadmill
High pressure resistant, the grade of spark of brush for electromachine, test result is shown in Table 3；
With reference to national standard《Electric rotating machine (except traction electric machine) determines the test method (GB/T of loss and efficiency
755.2-2003)》The efficiency of test reference examples running machine motor brush, test result is shown in Table 4.
The physical and mechanical properties test result of the brush of table 1
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Reference examples |
| Bulk density (g/cm3) | 1.60 | 1.62 | 1.63 | 1.65 | 1.63 | 1.38 |
| Shore hardness (HSD) | 24 | 25 | 26 | 24 | 25 | 22 |
| Resistivity (μ Ω m) | 1800 | 1600 | 1100 | 1500 | 1650 | 2200 |
| Rupture strength (MPa) | 12 | 13 | 11 | 12 | 12 | 16 |
The test result of table 1 shows：The bulk density of running machine motor brush prepared by the present invention is
1.60-1.65g/cm3；The resistivity 1100-1800 μ Ω m of running machine motor brush, resistance is moderate, is suitable for
Use in high pressure (DC 180V) running machine motor.And the resistivity of existing running machine motor brush is high,
Brush efficiency is low, and spark stability is poor.
The wear rate result of the test of the brush of table 2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Reference examples | |
| Wear rate (mm/100H) | 0.98 | 1.03 | 0.95 | 1.13 | 1.09 | 1.29 |
As seen from the results in Table 2：The wear rate of the brush for electromachine of the present invention is low, and wear rate is less than
1.2mm/100H, anti-wear performance is excellent, hence it is evident that better than the anti-wear performance of Imported Electrical Brush in reference examples.
The grade of spark result of the test of the brush of table 3
From the test result of table 3：The grade of spark of the running machine motor brush of the present invention is low, is 11/4,
Compared with the running machine motor brush of common commercially available import, grade of spark reduces 1 grade, suppresses spark
Ability is good, improves safety in utilization.
The efficiency test result of the brush of table 4
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Reference examples | |
| Efficiency | 37.6% | 37.3% | 38.2% | 36.5% | 36.9% | 36.1% |
From the test result of table 4：The efficiency of the running machine motor brush of the present invention is compared with reference examples import carbon
Brush is high, is a kind of energy-saving running machine motor brush.
Claims (9)
1. a kind of material for preparing running machine motor brush, including：
Matrix powder and binding agent；
It is characterized in that：Described matrix powder includes graphite, polybenzoate resin, polytetrafluoroethylene (PTFE) and metal dust.
2. material according to claim 1, it is characterised in that the graphite, polybenzoate resin, poly-
The weight of tetrafluoroethene and metal dust is 70-95:1-3:2-4:5-15.
3. material according to claim 2, it is characterised in that the graphite includes native graphite and soft
Property graphite, the native graphite and the soft graphite weight be 65-85:5-10.
4. material according to claim 3, it is characterised in that the native graphite, soft graphite,
The weight of polybenzoate resin, polytetrafluoroethylene (PTFE) and metal dust is 65-85:5-10:1-3:2-4:5-15.
5. material according to claim 3, it is characterised in that described matrix powder also includes additive
And curing agent.
6. material according to claim 5, it is characterised in that the native graphite, soft graphite,
The weight of polybenzoate resin, polytetrafluoroethylene (PTFE), metal dust, additive and curing agent is
65-85:5-10:1-3:2-4:5-15:1-5:0.5-3。
7. material according to claim 6, it is characterised in that the native graphite, soft graphite,
Polybenzoate resin, polytetrafluoroethylene (PTFE), metal dust, additive, the weight of curing agent are
65-75:6-8:1-3:2-4:8-12:1.5-5:1-3。
8. material according to claim 7, it is characterised in that the metal dust includes copper powder, silver
One or more in powder, tungsten powder and glass putty.
9. material according to claim 1, it is characterised in that the weight of described matrix powder and binding agent
Amount part proportioning is 79.5-125:10-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741702.XA CN106654779A (en) | 2015-11-04 | 2015-11-04 | Material for preparing brush for treadmill motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741702.XA CN106654779A (en) | 2015-11-04 | 2015-11-04 | Material for preparing brush for treadmill motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106654779A true CN106654779A (en) | 2017-05-10 |
Family
ID=58851412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510741702.XA Pending CN106654779A (en) | 2015-11-04 | 2015-11-04 | Material for preparing brush for treadmill motors |
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| CN (1) | CN106654779A (en) |
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| CN102916318A (en) * | 2012-10-30 | 2013-02-06 | 江苏华宇碳素有限公司 | Carbon brush of motor of drum washing machine and method for manufacturing carbon brush |
| CN104779511A (en) * | 2014-01-15 | 2015-07-15 | 苏州东南碳制品有限公司 | Manufacturing method of electric brush for treadmill motor and electronic brush manufactured using same |
| CN104901119A (en) * | 2015-05-18 | 2015-09-09 | 安徽一颗钉商贸有限公司 | Carbon brush used for corrosion-prevention antifriction motor and mixed with chrome molybdenum composite powders and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005099048A1 (en) * | 2004-04-08 | 2005-10-20 | Carbone Lorraine Applications Electriques | Lead-free brush grade for high temperature applications |
| CN1967951A (en) * | 2006-11-20 | 2007-05-23 | 苏州东南碳制品有限公司 | A carbon brush used for electric engine of cleaner |
| CN102468587A (en) * | 2010-11-19 | 2012-05-23 | 苏州东豪碳素有限公司 | Series-excitation AC (Alternating Current) motor brush for soybean milk maker/juice extractor |
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