CN104993349A - Low-spark anti-ablation motor carbon brush material and preparation method thereof - Google Patents
Low-spark anti-ablation motor carbon brush material and preparation method thereof Download PDFInfo
- Publication number
- CN104993349A CN104993349A CN201510354426.1A CN201510354426A CN104993349A CN 104993349 A CN104993349 A CN 104993349A CN 201510354426 A CN201510354426 A CN 201510354426A CN 104993349 A CN104993349 A CN 104993349A
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- CN
- China
- Prior art keywords
- carbon brush
- preparation
- sintering
- composite mortar
- ablation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention relates to the field of carbon brush materials, specifically to a low-spark anti-ablation motor carbon brush material and a preparation method thereof. The carbon brush material uses high-purity conductive graphite and conductive carbon black as base materials, has excellent electrical conductivity, uses a liquid rosin resin and an epoxy resin solution as a composite adhesive, the adhesive and the conductive base materials have good compatibility and adhesion capability, blended talcum powder and yttrium oxide have lubricating and sintering-assisting effects, thereby improving the strength of a carbon brush, added nano-zinc oxide has magnetism, can reduce sparks in a friction process, thereby reducing ablation of a rotor and a stator, the carbon brush prepared by the method provided by the invention is high in dimensional accuracy, and has a smooth and clean and wear-resisting surface, excellent steering performance, small sparks and low noise, and the service life is effectively prolonged.
Description
Technical field
The present invention relates to carbon brush material field, be specifically related to carbon brush for electric machine material of a kind of low spark burn-out proof and preparation method thereof.
Background technology
Carbon brush is a class conduction slide contact member, be widely used in many electric equipments, it is the device of transferring energy and signal between the standing part of motor, engine or other rotating machineries and rotating part, its composition material, primarily of graphite, Resin adhesive and other auxiliary agents, is then made through sinter molding.Carbon brush in use with rotor, stator CONTACT WITH FRICTION, wearing and tearing can be produced at contact-making surface, if do not improve the abrasion resistance properties of carbon brush, serviceability and the useful life of whole equipment will be badly influenced, therefore, research and development have high abrasion resistance, the carbon brush material of high conductivity seems particularly important.
Summary of the invention
The object of the invention is to, provide carbon brush for electric machine material of a kind of low spark burn-out proof and preparation method thereof, to achieve these goals, the technical solution used in the present invention is as follows:
A kind of carbon brush for electric machine material of low spark burn-out proof, it is characterized in that, this carbon brush material is made up of the raw material of following weight portion: nano zine oxide 2-3, calcium stearate 0.8-1, liquid rosin resin 5-6, concentration are the epoxy resin solution 30-40 of 45-50%, high-purity electrically conductive graphite powder 50-60, talcum powder 5-8, conductive black 8-10, yittrium oxide 0.001-0.002, naphthenic oil 10-12, silane coupler 1-2.
The preparation method of the carbon brush for electric machine material of described a kind of low spark burn-out proof is:
(1) first talcum powder and liquid rosin resin, epoxy resin solution are uniformly mixed, make composite mortar 1 for subsequent use;
(2) by nano zine oxide, yittrium oxide, conductive black and silane coupler, naphthenic oil mixing and stirring, composite mortar 2 is obtained for subsequent use;
(3) composite mortar 1 prepared above, composite mortar 2 are mixed with other leftover materials, drop into after mixing in mixer, be heated to 60-80 DEG C, insulation 40-50min, discharging after the 20-30min of continuation stirring subsequently, is cooled to after room temperature until material and drops into backflow pulverizing in pulverizer, gained powder crosses 100 mesh sieves, again by compressing for gained micro mist band line, the product after shaping is sent in blanket of nitrogen sintering furnace and is sintered, and gets product after terminating through cooling, electric welding, packaging.
Described sintering condition is: sintering temperature: 400-450 DEG C; Sintering time 6-8h.
Beneficial effect: the present invention utilizes high-purity electrically conductive graphite and conductive black as base-material, there is excellent conductivity, and using liquid rosin resin and epoxy resin solution as composite adhesive, this adhesive has good compatibility and cementability with conduction base-material, the wherein talcum powder of blending, yittrium oxide has lubrication, help the effects such as sintering, improve the intensity of carbon brush, the nano zine oxide added has magnetic, the spark in friction process can be reduced, reduce the ablation to rotor stator, the carbon brush dimensional accuracy that the present invention prepares is high, any surface finish is wear-resistant, steering behaviour is excellent, spark is little, noise is low, useful life is effectively extended.
Embodiment
Embodiment
The carbon brush material of the present embodiment is made up of the raw material of following weight portion: nano zine oxide 2.5, calcium stearate 0.8, liquid rosin resin 5, concentration are the epoxy resin solution 35 of 50%, high-purity electrically conductive graphite powder 55, talcum powder 6, conductive black 9, yittrium oxide 0.001, naphthenic oil 10, silane coupler 1.5.
Its preparation method is:
(1) first talcum powder and liquid rosin resin, epoxy resin solution are uniformly mixed, make composite mortar 1 for subsequent use;
(2) by nano zine oxide, yittrium oxide, conductive black and silane coupler, naphthenic oil mixing and stirring, composite mortar 2 is obtained for subsequent use;
(3) composite mortar 1 prepared above, composite mortar 2 are mixed with other leftover materials, drop into after mixing in mixer, be heated to 60-80 DEG C, insulation 50min, discharging after the 30min of continuation stirring subsequently, is cooled to after room temperature until material and drops into backflow pulverizing in pulverizer, gained powder crosses 100 mesh sieves, again by compressing for gained micro mist band line, the product after shaping is sent in blanket of nitrogen sintering furnace and is sintered, and gets product after terminating through cooling, electric welding, packaging.
Wherein sintering condition is: sintering temperature: 450 DEG C; Sintering time 6h.
The carbon brush the performance test results that the present embodiment obtains is as follows:
| Test item | Detected value |
| Size | 5mm*5mm*20mm |
| Shore hardness | 18 |
| Abrasion loss mm/100H | 0.40 |
| Slip noise (dB) | ≤50 |
| Useful life (H) | ≥1150 |
| Spark situation | Stable |
| Resistivity μ Ω .m | 342 |
Claims (3)
1. the carbon brush for electric machine material of one kind low spark burn-out proof, it is characterized in that, this carbon brush material is made up of the raw material of following weight portion: nano zine oxide 2-3, calcium stearate 0.8-1, liquid rosin resin 5-6, concentration are the epoxy resin solution 30-40 of 45-50%, high-purity electrically conductive graphite powder 50-60, talcum powder 5-8, conductive black 8-10, yittrium oxide 0.001-0.002, naphthenic oil 10-12, silane coupler 1-2.
2. the preparation method of the carbon brush for electric machine material of a kind of low spark burn-out proof as claimed in claim 1, it is characterized in that, described preparation method is:
(1) first talcum powder and liquid rosin resin, epoxy resin solution are uniformly mixed, make composite mortar 1 for subsequent use;
(2) by nano zine oxide, yittrium oxide, conductive black and silane coupler, naphthenic oil mixing and stirring, composite mortar 2 is obtained for subsequent use;
(3) composite mortar 1 prepared above, composite mortar 2 are mixed with other leftover materials, drop into after mixing in mixer, be heated to 60-80 DEG C, insulation 40-50min, discharging after the 20-30min of continuation stirring subsequently, is cooled to after room temperature until material and drops into backflow pulverizing in pulverizer, gained powder crosses 100 mesh sieves, again by compressing for gained micro mist band line, the product after shaping is sent in blanket of nitrogen sintering furnace and is sintered, and gets product after terminating through cooling, electric welding, packaging.
3. the preparation method of the carbon brush for electric machine material of a kind of low spark burn-out proof as claimed in claim 2, it is characterized in that, in described sintering process, sintering condition is: sintering temperature: 400-450 DEG C; Sintering time 6-8h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354426.1A CN104993349A (en) | 2015-06-25 | 2015-06-25 | Low-spark anti-ablation motor carbon brush material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354426.1A CN104993349A (en) | 2015-06-25 | 2015-06-25 | Low-spark anti-ablation motor carbon brush material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104993349A true CN104993349A (en) | 2015-10-21 |
Family
ID=54305124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510354426.1A Pending CN104993349A (en) | 2015-06-25 | 2015-06-25 | Low-spark anti-ablation motor carbon brush material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104993349A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060928A (en) * | 1990-10-22 | 1992-05-06 | 海门县电碳厂 | A kind of manufacture method of used in high-speed motor brush |
| CN102142650A (en) * | 2010-11-30 | 2011-08-03 | 施丽萍 | Nano rare earth compound high-wear-resisting additive for electric brushes and preparation method thereof |
| CN104710955A (en) * | 2013-12-11 | 2015-06-17 | 张国华 | Wear-resistant resin adhesive |
-
2015
- 2015-06-25 CN CN201510354426.1A patent/CN104993349A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060928A (en) * | 1990-10-22 | 1992-05-06 | 海门县电碳厂 | A kind of manufacture method of used in high-speed motor brush |
| CN102142650A (en) * | 2010-11-30 | 2011-08-03 | 施丽萍 | Nano rare earth compound high-wear-resisting additive for electric brushes and preparation method thereof |
| CN104710955A (en) * | 2013-12-11 | 2015-06-17 | 张国华 | Wear-resistant resin adhesive |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151021 |