CN104882761A - High-temperature-resisting metal electrographite brush and preparation method of metal electrographite brush - Google Patents
High-temperature-resisting metal electrographite brush and preparation method of metal electrographite brush Download PDFInfo
- Publication number
- CN104882761A CN104882761A CN201510248155.1A CN201510248155A CN104882761A CN 104882761 A CN104882761 A CN 104882761A CN 201510248155 A CN201510248155 A CN 201510248155A CN 104882761 A CN104882761 A CN 104882761A
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- China
- Prior art keywords
- brush
- parts
- alloy powder
- temperature
- electrographite brush
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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
- 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)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a high-temperature-resisting metal electrographite brush. The high-temperature-resisting metal electrographite brush is characterized by being prepared from raw materials by weight: 40-60 parts of crystalline flake graphite, 18-28 parts of pitch, 20-30 parts of tungsten disulfide, 3-5 parts of iron powder, 5-8 parts of carbon microballoon, 8-14 parts of titanium dioxide, 6-9 parts of copper-manganese alloy powder and an appropriate amount of oleic acid. By adding the carbon microballoon, the conductivity of the material is enhanced. By adding the titanium dioxide, the high temperature resistance of the material is improved. By adding the copper-manganese alloy powder, effects of refining grains and improving compactness are realized. The high-temperature-resisting metal electrographite brush is simple in technique, low in cost, easy in implementation of industrial production. Brush material with high conductivity, high temperature resistance, excellent self-lubricating performance and abrasion performance can be prepared and the application prospect is good.
Description
Technical field
the present invention relates to a kind of brush material, be specifically related to a kind of refractory metal electrographite brush 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 refractory metal electrographite brush and preparation method thereof.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of refractory metal electrographite brush, 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, carbon microspheres 5-8, titanium dioxide 8-14, copper magnesium alloy powder 6-9, oleic acid are appropriate;
A kind of refractory metal graphite brush material 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 magnesium 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 magnesium alloy powder of the present invention, the content of magnesium is 9-11%.
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 magnesium alloy powder, coefficient of friction is reduced and reaches maximum, effectively raise greasy property and resistance to wear, and can compactness be improved, prevent the characteristic of brush dry linting, the carbon microspheres added enhances the conductivity of material, the titanium dioxide added improves the resistance to elevated temperatures of material, present invention process is simple, with low cost, be easy to realize industrialization, can prepare and there is high conductivity, high temperature resistant, the brush material of excellent self-lubricating abrasion-resistant, application prospect is good.
Embodiment
Below by instantiation, the present invention is described in detail.
A kind of refractory metal electrographite brush, is made up of the raw material of following weight portion (kilogram): crystalline flake graphite 58, pitch 24, tungsten disulfide 25, iron powder 4, carbon microspheres 7, titanium dioxide 9, copper magnesium alloy powder 8, oleic acid are appropriate;
A kind of refractory metal graphite brush material 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 magnesium 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 magnesium alloy powder of the present invention, the content of magnesium is 10%.
The metal-graphite brush material performance index prepared according to embodiment are as follows:
Resistivity (μ Ω m): 4.5;
Rockwell hardness (10/588N): 88;
Attrition value (50 hours, mm): 0.17;
Coefficient of friction (50 hours): 0.18;
Contact drop (50 hours, V): 1.2 ± 40%.
Claims (3)
1. a refractory metal electrographite brush, 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, carbon microspheres 5-8, titanium dioxide 8-14, copper magnesium alloy powder 6-9, oleic acid are appropriate.
2. a kind of refractory 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 magnesium 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 refractory metal graphite brush material according to claim 1-2, is characterized in that, in described copper magnesium alloy powder, the content of magnesium is 9-11%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248155.1A CN104882761A (en) | 2015-05-15 | 2015-05-15 | High-temperature-resisting metal electrographite brush and preparation method of metal electrographite brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510248155.1A CN104882761A (en) | 2015-05-15 | 2015-05-15 | High-temperature-resisting metal electrographite brush and preparation method of metal electrographite brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104882761A true CN104882761A (en) | 2015-09-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510248155.1A Pending CN104882761A (en) | 2015-05-15 | 2015-05-15 | High-temperature-resisting metal electrographite brush and preparation method of metal electrographite brush |
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| CN (1) | CN104882761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159624A (en) * | 2016-06-29 | 2016-11-23 | 佛山市盈通黑金碳材料股份有限公司 | A kind of metal-graphite brush and preparation method thereof |
Citations (6)
| 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 |
| CN102931560A (en) * | 2012-11-21 | 2013-02-13 | 天津市贝特瑞新能源科技有限公司 | Brush material with excellent performance, and preparation method and application thereof |
| 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 CN201510248155.1A patent/CN104882761A/en active Pending
Patent Citations (6)
| 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 |
| CN102931560A (en) * | 2012-11-21 | 2013-02-13 | 天津市贝特瑞新能源科技有限公司 | Brush material with excellent performance, and preparation method and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159624A (en) * | 2016-06-29 | 2016-11-23 | 佛山市盈通黑金碳材料股份有限公司 | A kind of metal-graphite brush and preparation method thereof |
| CN106159624B (en) * | 2016-06-29 | 2019-03-05 | 佛山市盈通黑金碳材料股份有限公司 | A kind of metal-graphite brush and preparation method thereof |
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Application publication date: 20150902 |