CN110518425A - A kind of carbon brush for electric machine composite material and preparation method - Google Patents
A kind of carbon brush for electric machine composite material and preparation method Download PDFInfo
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- CN110518425A CN110518425A CN201910740298.2A CN201910740298A CN110518425A CN 110518425 A CN110518425 A CN 110518425A CN 201910740298 A CN201910740298 A CN 201910740298A CN 110518425 A CN110518425 A CN 110518425A
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- carbon brush
- graphite powder
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- composite material
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/38—Coating with copper
- C23C18/40—Coating with copper using reducing agents
- C23C18/405—Formaldehyde
-
- 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
-
- 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
- H01R39/26—Solid sliding contacts, e.g. carbon brush
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/12—Manufacture of brushes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses a kind of carbon brush for electric machine composite material and preparation methods, including 40-60 parts of fluorographite, 20-30 parts of copper coated graphite powder, 0-10 parts of molybdenum disulfide, 4-16 parts of soft carbon powder, 20-25 parts of binder, wherein, the copper coated graphite powder is by grinding natural flake graphite, impregnate 98% concentrated sulfuric acid 1 hour, distilled water flushing, graphite powder is sensitized using SnCl2 solution, then by treated, graphite powder is made after taking-up progress plating after drying 15 hours at 80 DEG C, carbon brush after present invention improvement, it can guarantee to work normally under the conditions of general work, it is also ensured that under the operating condition of high temperature and high speed, normal work within the scope of i.e. 90 ~ 120 DEG C of operating temperature, uniform reliable oxidation film can be formed by meeting under high temperature operating conditions, together When guarantee carbon brush under hot operation wearability, after molding the resistivity of carbon brush uniformity and good electric conductivity.
Description
Technical field
The invention belongs to carbon brush technical fields, and in particular to a kind of carbon brush for electric machine composite material and preparation method.
Background technique
Carbon brush is also brush, as a kind of slide contact member, is widely used in many electrical equipments.Carbon brush is
The device of energy or signal is transmitted between motor or the fixed part and rotating part of generator or other rotating machineries, it one
As be made of that pure carbon adds coagulator, external form is usually square, is stuck on metallic support, and there is spring handle in the inside, and it is pressed on shaft
On, when motor rotates, electric energy is conveyed to coil by phase changer, since its main component is carbon, referred to as carbon brush, it is
Easy to wear.It answers periodic maintenance to replace, and clears up carbon distribution.
Motor uses carbon brush without using metal as sliding conduction body, main reason is that carbon is conductive, resistance to
Mill property and lubricity.Its lubricity mainly slides generated one layer of uniform alumina film in commutator by carbon brush for electric machine, can
The smoothness for guaranteeing sliding, can also ensure that brush electric conductivity is good.And it is 70 DEG C that oxidation film, which forms optimum temperature, in existing situation
When controlling, and operating when motor is in high temperature and high speed, carbon brush temperature can be more than 100 DEG C, and even up to 150 DEG C or so.This
Sample can thoroughly destroy oxidation film, and coefficient of friction is caused to increase, and carbon brush temperature increases, and conductivity decline generates electric spark, serious shadow
Equipment is rung to operate normally.
For the electric conductivity for improving carbon brush, mostly uses and increase metallic element sintering compression moulding.Such metallic graphite carbon material
The carbon brush of matter, there are resistance to disperse non-uniform problem for discovery in actual production.Graphite powder and metal powder in granular size,
Density etc. is variant, causes thoroughly cannot uniformly mix the two no matter using which kind of stirring means and fusion technique
It closes.Prior art not can guarantee powder and be uniformly mixed using the technique suppressed after carbon dust and metal powder mixed sintering, therefore difficult
Exempt to will lead to carbon brush Density inhomogeneity, cause resistance dispersion uneven, therefore leads to the multiple carbon brush installed in same motor electricity
Resistance value has very big difference, causes to strike sparks.
Summary of the invention
The present invention provides a kind of carbon brush for electric machine composite material and preparation method, can be with shape under high temperature operating conditions
At uniform reliable oxidation film, while carbon brush can be guaranteed in the wearability under hot operation, the resistivity of carbon brush after molding
Uniformity and good electric conductivity.
Specific technical solution is as follows:
A kind of carbon brush for electric machine composite material, including following raw material: 40-60 parts of fluorographite, 20-30 parts of copper coated graphite powder, two sulphur
Change molybdenum 0-10 parts, 4-16 parts of soft carbon powder, 20-25 parts of binder, wherein the copper coated graphite powder is by by natural scale stone
Ink grinding, impregnates 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder, then will treated stone
It takes out after ink powder is 15 hours dry at 80 DEG C and is made after carrying out plating.
Preferably, comprising the following steps: by potassium fluoride powder be placed in calcining furnace in, 290-310 DEG C calcine 3 hours, then
It is placed in electrolytic cell, 1% lithium fluoride is added, fluorine gas obtained will be electrolysed and pass through cooling pit and 90-110 DEG C of granular sodium fluoride
Filter layer；Natural flake graphite is ground, is purified after immersion oil, fluorine gas is passed through after being placed in reacting furnace, controls 400-500 DEG C of furnace temperature,
Reaction time 2 hours, fluorographite can be obtained；By the fluorographite prepared, copper coated graphite powder, binder and other raw material mixs
It is milled into mixture after uniformly, mixture is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa is led to
Nitrogen-hydrogen cooling air is crossed, is made after immersion oil under vacuum.
Preferably, will treated graphite powder when carrying out plating, plating solution it is as follows with method: 15g/L CuSO4·5H2O；
35ml/L HCHO；25g/L Na2EDTA；14g/L C4H4KNa·4H2O；10 ml/L stabilizers.
Preferably, temperature when carrying out plating to graphite powder is 60 DEG C, and agitating mode is electromagnetic agitation, and mixing speed is
600r/min, plating 10min.
Preferably, the cooling pit is CaCl2With ice.
Preferably, natural flake graphite is ground, the purity purified after immersion oil is 99.5-99.6%.Average particle size is less than
400 mesh.
Preferably, described adhesive is one of thermosetting resin or pitch.
The utility model has the advantages that
It is reacted 1. the present invention comes into full contact with little particle graphite powder with the fluorine gas of preparation, by graphite linings gap
It being filled with fluorine atom, the carbon atom after reaction and fluorine atom form Covalent bonding together, the hardness and toughness of graphite are improved,
It solves since the atomic structural arrangement of graphite is laminated sheet, there is larger gap between layers, lead to the ontology of graphite
And its oxide structure dispersion, easy fragmentation, at relatively high temperatures stability are insufficient, and carbon brush is caused to be formed under the conditions of general work
Oxidation film easily worn when high temperature and high speed works, increase the friction between carbon brush and commutator, it is conventional in high temperature and high speed work
The problem of damage of carbon brush oxidation film causes carbon brush to be struck sparks, damages motor, influence the normal work of motor, having reached can not only make
Manufactured carbon brush can normally form oxidation film in general work state, and in high temperature and high speed work it is also ensured that oxidation
The technical effect that film is not worn.
2. the carbon brush after present invention improvement, it is ensured that under the conditions of general work, i.e. 50-80 DEG C of model of operating temperature
Enclose interior normal work, it is also ensured that under the operating condition of high temperature and high speed, i.e., within the scope of 90-120 DEG C of operating temperature just
Often work.Through detecting, in 120 DEG C of operating temperatures, the oxidation film that carbon brush is formed is still uniform, and coefficient of friction maintains 0.35 left side
The right side, when general work temperature 0.32 compared with without significant difference.
3. graphite powder is carried out electroplating processes by the present invention, metallic atom is set uniformly to be wrapped in graphite powder week by chemical means
It encloses, is controlled by the quality of electroplating technology, it is ensured that the metal uniformity of the electro graphite powder of generation, to ensure that metal
Atom and carbon atom being uniformly distributed after carbon brush is made, avoid graphite powder thoroughly will can not uniformly be mixed with metal powder,
Quality control it is upper can not accomplish to distribution of resistance situation strict control, cause made of have resistance often with batch carbon brush and divide
The problem of cloth unevenness, has reached in practical applications, resistance and homogeneous current distribution, is able to extend carbon brush service life, is not easy
The technical effect for causing carbon brush to be struck sparks, the sampled detection of finished product carbon brush, product distribution of resistance is uniform, 50 carbon brush resistance differences of sampling
± 5%.
Detailed description of the invention:
Fig. 1: the operating friction coefficient figure of carbon brush at a temperature of different operating；
The oxidation film comparison diagram that Fig. 2: two kinds of different carbon brush are formed；
Fig. 3: different carbon brush distribution of resistance situation maps.
Specific embodiment
Embodiment 1:
The carbon brush for electric machine composite material of the present embodiment, including following raw material: 40 parts of fluorographite, 22 parts of copper coated graphite powder, soft
10 parts of carbon black powder, 20 parts of thermosetting resin.
The present embodiment the preparation method is as follows:
Natural flake graphite is ground, is impregnated 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder,
Then by treated, graphite powder takes out progress plating at 80 DEG C after drying 15 hours, and temperature when plating is carried out to graphite powder
It is 60 DEG C, agitating mode is electromagnetic agitation, mixing speed 600r/min, plating 10min；
Potassium fluoride powder is placed in calcining furnace, 310 DEG C are calcined 3 hours, are then placed in electrolytic cell, 1% lithium fluoride is added, will
It is electrolysed fluorine gas obtained and passes through cooling pit and 100 DEG C of granular sodium fluoride filter layer；Natural flake graphite is ground, after immersion oil
It purifies, the purity purified after immersion oil is 99.5%.300 mesh of average particle size.It is passed through fluorine gas after merging reacting furnace, controls furnace temperature 400
DEG C, the reaction time 2 hours, fluorographite can be obtained；
By the fluorographite prepared, copper coated graphite powder, binder and other raw material mixs it is uniform after be milled into mixture, will mix
It closes material and is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa, by nitrogen-hydrogen cooling air, under vacuum
It is made after immersion oil.
Embodiment 2:
The carbon brush for electric machine composite material of the present embodiment, including following raw material: 50 parts of fluorographite, 25 parts of copper coated graphite powder, two sulphur
Change 5 parts of molybdenum, 12 parts of soft carbon powder, 21 parts of thermosetting resin.
The preparation method is as follows:
Natural flake graphite is ground, is impregnated 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder,
Then by treated, graphite powder takes out progress plating at 80 DEG C after drying 15 hours, and temperature when plating is carried out to graphite powder
It is 60 DEG C, agitating mode is electromagnetic agitation, mixing speed 600r/min, plating 10min；
Potassium fluoride powder is placed in calcining furnace, 300 DEG C are calcined 3 hours, are then placed in electrolytic cell, 1% lithium fluoride is added, will
It is electrolysed fluorine gas obtained and passes through cooling pit and 90 DEG C of granular sodium fluoride filter layer；Natural flake graphite is ground, after immersion oil
It purifies, the purity purified after immersion oil is 99.5%.350 mesh of average particle size.It is passed through fluorine gas after merging reacting furnace, controls furnace temperature 450
DEG C, the reaction time 2 hours, fluorographite can be obtained；
By the fluorographite prepared, copper coated graphite powder, binder and other raw material mixs it is uniform after be milled into mixture, will mix
It closes material and is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa, by nitrogen-hydrogen cooling air, under vacuum
It is made after immersion oil.
Embodiment 3:
The carbon brush for electric machine composite material of the present embodiment, including following raw material: 60 parts of fluorographite, 20 parts of copper coated graphite powder, two sulphur
Change 7 parts of molybdenum, 8 parts of soft carbon powder, 25 parts of pitch.
The preparation method is as follows:
Natural flake graphite is ground, is impregnated 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder,
Then by treated, graphite powder takes out progress plating at 80 DEG C after drying 15 hours, and temperature when plating is carried out to graphite powder
It is 60 DEG C, agitating mode is electromagnetic agitation, mixing speed 600r/min, plating 10min；
Potassium fluoride powder is placed in calcining furnace, 290 DEG C are calcined 3 hours, are then placed in electrolytic cell, 1% lithium fluoride is added, will
It is electrolysed fluorine gas obtained and passes through cooling pit and 105 DEG C of granular sodium fluoride filter layer；Natural flake graphite is ground, after immersion oil
It purifies, the purity purified after immersion oil is 99.6%.290 mesh of average particle size.It is passed through fluorine gas after merging reacting furnace, controls furnace temperature 480
DEG C, the reaction time 2 hours, fluorographite can be obtained；
By the fluorographite prepared, copper coated graphite powder, binder and other raw material mixs it is uniform after be milled into mixture, will mix
It closes material and is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa, by nitrogen-hydrogen cooling air, under vacuum
It is made after immersion oil.
Embodiment 4:
The carbon brush for electric machine composite material of the present embodiment, including following raw material: 50 parts of fluorographite, 30 parts of copper coated graphite powder, two sulphur
Change 9 parts of molybdenum, 16 parts of soft carbon powder, 22 parts of pitch.
The preparation method is as follows:
Natural flake graphite is ground, is impregnated 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder,
Then by treated, graphite powder takes out progress plating at 80 DEG C after drying 15 hours, and temperature when plating is carried out to graphite powder
It is 60 DEG C, agitating mode is electromagnetic agitation, mixing speed 600r/min, plating 10min；
Potassium fluoride powder is placed in calcining furnace, 295 DEG C are calcined 3 hours, are then placed in electrolytic cell, 1% lithium fluoride is added, will
It is electrolysed fluorine gas obtained and passes through cooling pit and 110 DEG C of granular sodium fluoride filter layer；Natural flake graphite is ground, after immersion oil
It purifies, the purity purified after immersion oil is 99.6%.280 mesh of average particle size.It is passed through fluorine gas after merging reacting furnace, controls furnace temperature 500
DEG C, the reaction time 2 hours, fluorographite can be obtained；
By the fluorographite prepared, copper coated graphite powder, binder and other raw material mixs it is uniform after be milled into mixture, will mix
It closes material and is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa, by nitrogen-hydrogen cooling air, under vacuum
It is made after immersion oil.
Wherein, in the embodiment plating solution with method it is as follows: 15g/L CuSO4·5H2O；35ml/L HCHO；25g/L
Na2EDTA；14g/L C4H4KNa·4H2O；10 ml/L stabilizers.Cooling pit is CaCl2With the mixture of ice.
Correlated performance test:
1. coefficient of friction detection test
Using FT1 friction coefficient tester, at 50 ~ 120 DEG C of operating temperature, to common carbon brush and the carbon brush of the invention improved
Coefficient of friction under actual working environment has carried out monitoring comparison.As a result as shown in Figure 1.
With the raising of operating temperature it can be seen from data in figure, the coefficient of friction of general carbon brush is significantly raised, and changes
The coefficient of friction kept stable of good carbon brush.Therefore, it can be seen that the carbon brush being prepared by the present invention is in high temperature and high speed
Working environment under still can work normally.
2. oxidation film comparative test
In order to intuitively detect carbon brush the oxidation film that commutator face leaves the case where, general carbon brush and process have been selected respectively
The carbon brush that the present invention improves, at a temperature of general work after carbon brush continuous work a few hours, respectively to the oxygen of its commutator production
Change film to be retained, after a few hours that then work in the environment of high temperature and high speed, the oxidation to the production of its commutator respectively again
Film is retained, as a result as shown in Figure 2.
As shown, figure A is the oxidation film figure improveing carbon brush and leaving at a temperature of general work, figure B is that general carbon brush exists
The oxidation film figure left at a temperature of general work, figure C are the oxidation film figures improveing carbon brush and leaving under high temperature and high speed work, scheme D
It is the oxidation film figure improveing carbon brush and being left under high temperature and high speed work.
At a temperature of general work, oxidation film left by two kinds of carbon brush is uniformly distributed, and in high temperature and high speed working environment
Under, the oxidation film of general carbon brush generates the marking left after obvious friction aggravates, it was demonstrated that due under the working environment of high temperature and high speed
General carbon brush coefficient of friction increases, and leads to serious wear, causes destruction to oxidation film, and cause centainly to wear to commutator.
And the oxidation film that carbon brush is formed under high temperature and high speed working environment after present invention improvement meets design requirement substantially without influence.
3. distribution of resistance detection test
Using high-precision precision metallic conductivity meter PZ60A to same batch improve the distribution of resistance situation of carbon brush and general carbon brush into
Row detection, sample size 50.
It can be seen in figure 3 that the resistance value of general carbon brush is high, distribution dispersion, and the resistance value of carbon brush is low after improveing, point
Cloth is concentrated, and graphite powder is carried out electroplating processes, is wrapped in metallic atom uniformly around graphite powder by chemical means by the present invention,
It is controlled by the quality of electroplating technology, it is ensured that the metal uniformity of the electro graphite powder of generation, to ensure that metal original
Son and carbon atom being uniformly distributed after carbon brush is made, avoid graphite powder thoroughly will can not uniformly be mixed with metal powder, In
Quality control is upper can not to be accomplished to distribution of resistance situation strict control, cause manufactured to have distribution of resistance often with batch carbon brush
Uneven problem, has reached in practical applications, resistance and homogeneous current distribution, has been able to extend carbon brush service life, is not easy to lead
The technical effect of carbon brush sparking is caused, the sampled detection of finished product carbon brush, 50 carbon brush resistance differences of sampling are ± 5%, product distribution of resistance
Uniformly.
Obviously present invention specific implementation is not subject to the restrictions described above, as long as using method concept and skill of the invention
The improvement for the various unsubstantialities that art scheme carries out, or not improved the conception and technical scheme of the invention are directly applied to it
Its occasion, within that scope of the present invention.
Claims (7)
1. a kind of carbon brush for electric machine composite material, which is characterized in that including following raw material: 40-60 parts of fluorographite, copper coated graphite powder
20-30 parts, 0-10 parts of molybdenum disulfide, 4-16 parts of soft carbon powder, 20-25 parts of binder, wherein the copper coated graphite powder passes through
Natural flake graphite is ground, is impregnated 98% concentrated sulfuric acid 1 hour, distilled water flushing, using SnCl2Solution is sensitized graphite powder, then
By treated, copper coated graphite powder is made after taking-up progress plating after drying 15 hours at 80 DEG C in graphite powder.
2. the preparation method of carbon brush for electric machine composite material as described in claim 1, which comprises the following steps: will
Potassium fluoride powder is placed in calcining furnace, and 290-310 DEG C is calcined 3 hours, is then placed in electrolytic cell, 1% lithium fluoride is added, will be electric
It solves fluorine gas obtained and passes through cooling pit and 90-110 DEG C of granular sodium fluoride filter layer；Natural flake graphite is ground, immersion oil
After purify, be passed through fluorine gas after being placed in reacting furnace, control 400-500 DEG C of furnace temperature, the reaction time 2 hours, fluorographite can be obtained；It will system
Be milled into mixture after fluorographite, copper coated graphite powder, binder and other raw material mixs got ready are uniform, by mixture in
It is sintered 30min at 800 DEG C, the compression moulding under the pressure of 180MPa, by nitrogen-hydrogen cooling air, under vacuum after immersion oil
It is made.
3. the preparation method of carbon brush for electric machine composite material as described in claim 1, which is characterized in that will treated graphite powder
Carry out plating when, plating solution with method it is as follows: 15g/L CuSO4·5H2O；35ml/L HCHO；25g/L Na2EDTA；14g/L
C4H4KNa·4H2O；10 ml/L stabilizers.
4. the preparation method of carbon brush for electric machine composite material as claimed in claim 3, which is characterized in that carry out plating to graphite powder
When temperature be 60 DEG C, agitating mode is electromagnetic agitation, mixing speed 600r/min, plating 10min.
5. carbon brush for electric machine composite material as described in claim 1, which is characterized in that the cooling pit is CaCl2With the mixing of ice
Object.
6. the preparation method of carbon brush for electric machine composite material as claimed in claim 2, which is characterized in that grind natural flake graphite
It grinds, the purity purified after immersion oil is 99.5-99.6%.Average particle size is less than 400 mesh.
7. carbon brush for electric machine composite material as described in claim 1, which is characterized in that described adhesive is thermosetting resin or drip
One of blueness.
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| CN201910740298.2A CN110518425B (en) | 2019-08-12 | 2019-08-12 | Motor carbon brush composite material and preparation method thereof |
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| CN201910740298.2A CN110518425B (en) | 2019-08-12 | 2019-08-12 | Motor carbon brush composite material and preparation method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010193621A (en) * | 2009-02-18 | 2010-09-02 | Toyo Tanso Kk | Metal graphite brush |
| CN102931561A (en) * | 2012-10-30 | 2013-02-13 | 江苏华宇碳素有限公司 | Carbon brush and copper plating technology of carbon brush |
| CN102931559A (en) * | 2012-10-30 | 2013-02-13 | 江苏华宇碳素有限公司 | Carbon brush of electric tool and preparation method of carbon brush |
| CN103811973A (en) * | 2012-11-12 | 2014-05-21 | 钱俊勇 | Production process for abrasion-resistant electric brush |
| CN104593755A (en) * | 2013-10-31 | 2015-05-06 | 青岛泰浩达碳材料有限公司 | Copper plating method on graphite powder surface |
| CN108832439A (en) * | 2018-07-02 | 2018-11-16 | 汉寿县祥顺碳制品有限公司 | A kind of automotive electronics fan carbon brush used for electric engine and preparation method thereof |
| CN109280335A (en) * | 2018-08-29 | 2019-01-29 | 江苏华宇碳素有限公司 | A kind of carbon brush for electric machine composite material and preparation method |
-
2019
- 2019-08-12 CN CN201910740298.2A patent/CN110518425B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010193621A (en) * | 2009-02-18 | 2010-09-02 | Toyo Tanso Kk | Metal graphite brush |
| CN102931561A (en) * | 2012-10-30 | 2013-02-13 | 江苏华宇碳素有限公司 | Carbon brush and copper plating technology of carbon brush |
| CN102931559A (en) * | 2012-10-30 | 2013-02-13 | 江苏华宇碳素有限公司 | Carbon brush of electric tool and preparation method of carbon brush |
| CN103811973A (en) * | 2012-11-12 | 2014-05-21 | 钱俊勇 | Production process for abrasion-resistant electric brush |
| CN104593755A (en) * | 2013-10-31 | 2015-05-06 | 青岛泰浩达碳材料有限公司 | Copper plating method on graphite powder surface |
| CN108832439A (en) * | 2018-07-02 | 2018-11-16 | 汉寿县祥顺碳制品有限公司 | A kind of automotive electronics fan carbon brush used for electric engine and preparation method thereof |
| CN109280335A (en) * | 2018-08-29 | 2019-01-29 | 江苏华宇碳素有限公司 | A kind of carbon brush for electric machine composite material and preparation method |
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|---|---|
| CN110518425B (en) | 2020-06-23 |
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