CN104882756A - Metal electrographite brush material having high waterproof performance and preparation method for metal electrographite brush material - Google Patents
Metal electrographite brush material having high waterproof performance and preparation method for metal electrographite brush material Download PDFInfo
- Publication number
- CN104882756A CN104882756A CN201510248037.0A CN201510248037A CN104882756A CN 104882756 A CN104882756 A CN 104882756A CN 201510248037 A CN201510248037 A CN 201510248037A CN 104882756 A CN104882756 A CN 104882756A
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- Prior art keywords
- parts
- brush material
- metal
- good
- waterproof performance
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Classifications
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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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention discloses a metal electrographite brush material having high waterproof performance. The method is characterized by being prepared from raw materials by weight: 40 to 60 parts of crystalline flake graphite, 18-28 parts of pitch, 20-30 parts of tungsten disulfide, 3-5 parts of iron powder, 8-12 parts of acrylic emulsion, 8-11 parts of nickel oxide, 5-8 parts of phosphorus pentoxide, 8-12 parts of copper-antimony alloy powder and an appropriate amount of oleic acid. By adding the phosphorus pentoxide, a liquid phase is produced and a comparatively low sintering temperature is provided, so that the growth and compactness of crystalline grains are promoted. By adding the nickel oxide, material oxidation and wearing condition can be reduced. By adding the acrylic emulsion, waterproof performance of the brush material is enhanced. The metal electrographite brush material is good in self-lubrication performance, good in abrasive resistance, high in hardness, high in volume density, low in specific resistance, good in conductivity, good in waterproof performance, wide in application range and worthy of promotion.
Description
Technical field
the present invention relates to a kind of brush material, be specifically related to a kind of high water-proof metal graphite brush material and preparation method thereof.
Background technology
Brush does sliding contact with movement parts and forms a kind of conductive component be electrically connected.Brush is for commutator or slip ring, as the sliding contact body importing and exporting electric current.Its conduction, heat conduction and greasy property well, and have the instinct of certain mechanical strength and commutation property spark.Nearly all direct current machine and commutating machine all use brush, and it is the important composition parts of motor.Domestic brush for electromachine product compared with producer of the same trade of advanced developed country product, also exist that product specification is low, useful life is short, produce when running spark greatly, easily pull slip ring, greasy property poor, the defect such as can not to exchange.The metal material of China and the composite material application of Inorganic Non-metallic Materials also rest on floor level at present, the technique of some product also maintains even absolutely applies mechanically, and this brush material can not meet the requirement of development of modern industry far away.
At present, the all imports of domestic CM9 brush, the Ji Jia large enterprise of our province every year will from external Imported Electrical Brush about more than 20,000,000 yuan, Imported Electrical Brush is long for delivery date, price is high, safeguard inconvenience, going wrong can not punctual delivery, serious words can cause enterprise to stop production, lose huge, for this phenomenon, present inventor improves the structural behaviour of domestic brush by the accumulation of many experiments and experience, improve intensity and the uniformity of material, not dry linting, increase the resistance to wear of material, reduce the wear extent of material, improve the combination property of material, fill up the blank of domestic brush, substitute import, there is very high Social benefit and economic benefit.
Summary of the invention
The object of this invention is to provide a kind of high water-proof metal graphite brush material and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of high water-proof metal graphite brush material, is made up of the raw material of following weight portion: crystalline flake graphite 40-60, pitch 18-28, tungsten disulfide 20-30, iron powder 3-5, acrylic emulsion 8-12, nickel oxide 8-11, phosphorus pentoxide 5-8, copper-antimony alloy powder 8-12, oleic acid are appropriate;
The high water-proof metal graphite brush material of one of the present invention, be made up of following concrete steps:
(1) by asphalt heating to melting, add iron powder mixing and stirring, namely obtain modified pitch after cooling for subsequent use;
(2) by modified pitch carbon tetrachloride dissolve obtain the solution that bitumen content is 2%, get 30-40% modified asphalt solutions and copper-antimony alloy powder mixing and stirring, then with tungsten disulfide mixing and stirring, be added in baking oven after removing solvent for subsequent use;
(3) by after the crushing material of step (2) gained and all the other remaining mixing of materials, mechanical agitation 3-4 hour in batch mixer, add remaining modified asphalt solutions again to stir, then be added in vacuum drying chamber dry except desolventizing, after 140 mesh sieves, vacuum-sintering 200 minutes under 400-600 ° of C, Temperature fall is for subsequent use to room temperature;
(4) inserting after the blank of step (3) being pulverized 200 mesh sieves is equipped with in the container of oleic acid; flood after 2-4 hour, Separation of Solid and Liquid, by compressing for solid pressurize 5 minutes under 25-30MPa; and utilize nitrogen as protective gas, under 800-1000 ° of C, sinter 1-2 hour.
In copper-antimony alloy powder of the present invention, the content of antimony is 49-51%.
Advantage of the present invention is: the present invention adds iron powder and carries out modification and improve caking property and the conductivity enhancing motor material in pitch, reduce the wearing and tearing that brush spark discharge causes, the activating agent oleic acid added is to blank impregnation process, have activated the bioactive molecule at graphitic molecules layer edge, itself and graphite is made to form good chemisorption, promote that brush forms oxide-film, improve the wear-resisting and uniformity of brush, pressing pressure can also be reduced, improve the density uniformity of green compact, the tungsten disulfide added is by the modification of copper-antimony alloy powder, coefficient of friction is reduced and reaches maximum, effectively raise greasy property and resistance to wear, and can compactness be strengthened, prevent the characteristic of brush dry linting, the phosphorus pentoxide added forms liquid phase and has lower sintering temperature, promote growth and the densification of crystal grain, form oxidation and wearing and tearing that the nickel oxide added can reduce material, the acrylic emulsion added enhances the water proofing property of brush material, the metal-graphite brush material self lubricity that the present invention produces is good, resistance to wear is good, hardness is high, bulk density is high, resistivity is little, electric conductivity is excellent, good waterproof performance, application prospect is extensively worthy to be popularized.
Embodiment
Below by instantiation, the present invention is described in detail.
A kind of high water-proof metal graphite brush material, is made up of the raw material of following weight portion (kilogram): crystalline flake graphite 58, pitch 23, tungsten disulfide 25, iron powder 4, acrylic emulsion 8, nickel oxide 9, phosphorus pentoxide 6, copper-antimony alloy powder 9, oleic acid are appropriate;
The high water-proof metal graphite brush material of one of the present invention, be made up of following concrete steps:
(1) by asphalt heating to melting, add iron powder mixing and stirring, namely obtain modified pitch after cooling for subsequent use;
(2) by modified pitch carbon tetrachloride dissolve obtain the solution that bitumen content is 2%, get 30% modified asphalt solutions and copper-antimony alloy powder mixing and stirring, then with tungsten disulfide mixing and stirring, be added in baking oven after removing solvent for subsequent use;
(3) by after the crushing material of step (2) gained and all the other remaining mixing of materials, mechanical agitation 3 hours in batch mixer, add remaining modified asphalt solutions again to stir, then be added in vacuum drying chamber dry except desolventizing, after 140 mesh sieves, vacuum-sintering 200 minutes under 500 ° of C, Temperature fall is for subsequent use to room temperature;
(4) inserting after the blank of step (3) being pulverized 200 mesh sieves is equipped with in the container of oleic acid; flood after 3 hours, Separation of Solid and Liquid, by compressing for solid pressurize 5 minutes under 27MPa; and utilize nitrogen as protective gas, under 1000 ° of C, sinter 2 hours.
In copper-antimony alloy powder of the present invention, the content of antimony is 51%.
The metal-graphite brush material performance index prepared according to embodiment are as follows:
Resistivity (μ Ω m): 4.9;
Rockwell hardness (10/588N): 94;
Attrition value (50 hours, mm): 0.18;
Coefficient of friction (50 hours): 0.16;
Contact drop (50 hours, V): 1.2 ± 40%.
Claims (3)
1. one kind high water-proof metal graphite brush material, it is characterized in that, be made up of the raw material of following weight portion: crystalline flake graphite 40-60, pitch 18-28, tungsten disulfide 20-30, iron powder 3-5, acrylic emulsion 8-12, nickel oxide 8-11, phosphorus pentoxide 5-8, copper-antimony alloy powder 8-12, oleic acid are appropriate.
2. a kind of high water-proof metal graphite brush material according to claim 1, is characterized in that, be made up of following concrete steps:
(1) by asphalt heating to melting, add iron powder mixing and stirring, namely obtain modified pitch after cooling for subsequent use;
(2) by modified pitch carbon tetrachloride dissolve obtain the solution that bitumen content is 2%, get 30-40% modified asphalt solutions and copper-antimony alloy powder mixing and stirring, then with tungsten disulfide mixing and stirring, be added in baking oven after removing solvent for subsequent use;
(3) by after the crushing material of step (2) gained and all the other remaining mixing of materials, mechanical agitation 3-4 hour in batch mixer, add remaining modified asphalt solutions again to stir, then be added in vacuum drying chamber dry except desolventizing, after 140 mesh sieves, vacuum-sintering 200 minutes under 400-600 ° of C, Temperature fall is for subsequent use to room temperature;
(4) inserting after the blank of step (3) being pulverized 200 mesh sieves is equipped with in the container of oleic acid; flood after 2-4 hour, Separation of Solid and Liquid, by compressing for solid pressurize 5 minutes under 25-30MPa; and utilize nitrogen as protective gas, under 800-1000 ° of C, sinter 1-2 hour.
3. a kind of high water-proof metal graphite brush material according to claim 1-2, it is characterized in that, in described copper-antimony alloy powder, the content of antimony is 49-51%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248037.0A CN104882756A (en) | 2015-05-15 | 2015-05-15 | Metal electrographite brush material having high waterproof performance and preparation method for metal electrographite brush material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248037.0A CN104882756A (en) | 2015-05-15 | 2015-05-15 | Metal electrographite brush material having high waterproof performance and preparation method for metal electrographite brush material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104882756A true CN104882756A (en) | 2015-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510248037.0A Pending CN104882756A (en) | 2015-05-15 | 2015-05-15 | Metal electrographite brush material having high waterproof performance and preparation method for metal electrographite brush material |
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| CN (1) | CN104882756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177941A (en) * | 2021-12-16 | 2022-03-15 | 太仓运通新材料科技有限公司 | Esterification catalyst and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847816A (en) * | 2009-03-26 | 2010-09-29 | 苏州东南碳制品有限公司 | Wind driven power generation and transmission conductor powder metallurgy structural part and manufacturing method thereof |
| CN102074875A (en) * | 2009-11-19 | 2011-05-25 | 杨长根 | Method for manufacturing electric brush used for industrial motor |
| CN102280790A (en) * | 2011-05-31 | 2011-12-14 | 苏州东南碳制品有限公司 | Motor brush for small household appliances and manufacturing method of motor 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 |
| CN103811961A (en) * | 2012-11-12 | 2014-05-21 | 钱俊勇 | Waterproof electric brush materials |
-
2015
- 2015-05-15 CN CN201510248037.0A patent/CN104882756A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101847816A (en) * | 2009-03-26 | 2010-09-29 | 苏州东南碳制品有限公司 | Wind driven power generation and transmission conductor powder metallurgy structural part and manufacturing method thereof |
| CN102074875A (en) * | 2009-11-19 | 2011-05-25 | 杨长根 | Method for manufacturing electric brush used for industrial motor |
| CN102280790A (en) * | 2011-05-31 | 2011-12-14 | 苏州东南碳制品有限公司 | Motor brush for small household appliances and manufacturing method of motor 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 |
| CN103811961A (en) * | 2012-11-12 | 2014-05-21 | 钱俊勇 | Waterproof electric brush materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114177941A (en) * | 2021-12-16 | 2022-03-15 | 太仓运通新材料科技有限公司 | Esterification catalyst and preparation method thereof |
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| EXSB | Decision made by sipo to initiate substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150902 |
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| RJ01 | Rejection of invention patent application after publication |