CN101055964B - Method for making the layer carbon brush - Google Patents
Method for making the layer carbon brush Download PDFInfo
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- CN101055964B CN101055964B CN200710037931A CN200710037931A CN101055964B CN 101055964 B CN101055964 B CN 101055964B CN 200710037931 A CN200710037931 A CN 200710037931A CN 200710037931 A CN200710037931 A CN 200710037931A CN 101055964 B CN101055964 B CN 101055964B
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- carbon brush
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- carbon block
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Abstract
The invention discloses a method for manufacturing a sandwich carbon brush, including the following steps: A. pressing the powder carbon materials into a monolayer carbon block, and then carrying outa heat treatment to the monolayer carbon block; B. overlaying more than two monolayer carbon blocks, placing a layer of insulating-film between each continuous two monolayers, then pressing them as awhole to meke a sandwich carbon block; C. carrying out heat treatment to the sandwich carbon block to make a sandwich carbon brush. The inventive method for manufacturing a sandwich carbon brush, canfreely combine the monolayer carbon brush after different heat treatment technologies, to satisfy the needs of different resistivity, and being flexible to adjust. The technology and equipment requirement is simple, which may use the exsiting suppression equipment, molds and drying oven to carry out the production.
Description
Technical field
The present invention relates to a kind of method of making layer carbon brush.
Background technology
Along with popularizing of household electrical appliance, motor is miniaturization more, rotating speed also requires more and more higher, under this high-revolving condition, require carbon brush need have normal electric contact that high transverse resistivity, high commutation capacity are kept carbon brush and commutator, even yet adopt impregnated artificial stone mill or carbonaceous carbon brush, even sometimes adopt resin-bonded matter carbon brush also very difficult, therefore producing a kind of high resistivity carbon brush just becomes problem demanding prompt solution.
Summary of the invention
The objective of the invention is provides a kind of method of making layer carbon brush in order to solve shortcoming of the prior art.
For realizing above purpose, the present invention is achieved through the following technical solutions:
Make the method for layer carbon brush, may further comprise the steps: A, Powdered raw material of wood-charcoal material is made monolayer carbon block in mould inner pressure, then monolayer carbon block is heat-treated; B, the stack of plural monolayer carbon block are placed one deck insulation film between every two continuous monolayer carbon block, are compressed to and are made into integration sandwich charcoal piece; C, sandwich charcoal piece heat-treated make layer carbon brush.
Wherein, in the described steps A, under 180 ℃-600 ℃ to monolayer carbon block heat treatment 15 hours to 20 hours, preferably under 180 ℃-250 ℃ to monolayer carbon block heat treatment 15 hours to 20 hours, perhaps, in the described steps A, under 400 ℃-600 ℃ to monolayer carbon block heat treatment 15 hours to 20 hours.The temperature of using depends on the difference of raw material of wood-charcoal material.
Wherein, among the described step C, under 100 ℃-300 ℃ to sandwich charcoal piece heat treatment 1 hour to 10 hours.
Wherein, the thickness of the insulation film among the described step B is no more than 200 μ m.
Wherein, described raw material of wood-charcoal material package is drawn together native graphite, synthetic graphite and binding agent.
Wherein, described binding agent is selected from one or more in pitch, phenolic resins and/or the epoxy resin.
Wherein, described insulation film is alkyd resin based insulation film.
Make the method for layer carbon brush among the present invention, the individual layer carbon brush independent assortment of different heat treatment technology can be satisfied the needs of different resistivity, and adjust flexibly.Technology and equipment requirements are simple, can utilize existing press device, mould and drying box to produce.
Embodiment
Below in conjunction with specific embodiment component of the present invention is described further:
Embodiment 1, graphite powder, pitch were mixed by weight 3: 1, insert mould inner pressure after pulverizing, sieving and make monolayer carbon block, 550 ℃ of following sintering 20 hours, two-layer monolayer carbon block therebetween one deck phenolic resins base film is depressed to sandwich charcoal piece at pressure 1-2Nm, make film thickness reach 100 μ m, sandwich charcoal piece is incubated 4 hours down at 300 ℃, make layer carbon brush after shaping, the processing.
Embodiment 2, graphite powder, pitch were mixed by weight 3: 1.5, be pressed into monolayer carbon block after pulverizing, sieving, 500 ℃ of following sintering 22 hours, two-layer monolayer carbon block therebetween one deck phenolic resins base film is depressed to sandwich charcoal piece at pressure 1-2Nm, make the thickness of film reach 150 μ m, sandwich charcoal piece is incubated 9 hours down at 200 ℃, make layer carbon brush after shaping, the processing.
Embodiment 3, graphite powder, pitch were mixed by weight 3: 2, be pressed into monolayer carbon block after pulverizing, sieving, 600 ℃ of following sintering 18 hours, two-layer monolayer carbon block therebetween one deck phenolic resins base film is depressed to sandwich charcoal piece at pressure 1-2Nm, make film thickness reach 180 μ m, sandwich charcoal piece is incubated 7 hours down at 250 ℃, make layer carbon brush after shaping, the processing.
Embodiment 4, graphite powder, phenolic resins were mixed by weight 3: 2, be pressed into monolayer carbon block after pulverizing, sieving, 200 ℃ of following heat treatments 15 hours, two-layer monolayer carbon block therebetween one deck phenolic resins base film is depressed to sandwich charcoal piece at pressure 1-2Nm, make the thickness of film reach 120 μ m, sandwich charcoal piece is incubated 3 hours down at 120 ℃, make layer carbon brush after shaping, the processing.
Embodiment 5, graphite powder, epoxy resin were mixed by weight 3: 2, be pressed into monolayer carbon block after pulverizing, sieving, 180 ℃ of following heat treatments 15 hours, two-layer monolayer carbon block therebetween one deck phenolic resins base film is depressed to sandwich charcoal piece at pressure 1-2Nm, make the thickness of film reach 120 μ m, sandwich charcoal piece is incubated 3 hours down at 120 ℃, make layer carbon brush after shaping, the processing.
The layer carbon brush that embodiment 1-3 makes is tested, and is placed the XQG50-BS1268Z of Haier washing machine under the same test condition, to carry out the wear rate test, obtain test result such as following table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Resistivity (μ Ω m) | 750 | 970 | 1250 |
| Rupture strength (MPa) | 20 | 23 | 22 |
| Layer carbon brush wear rate (left side) (mm/ cycle) | 0.0110 | 0.0189 | 0.0197 |
| Layer carbon brush wear rate (right side) (mm/ cycle) | 0.0080 | 0.0256 | 0.0077 |
The foregoing description only is used for that the present invention will be described, does not constitute the restriction to the claim scope, and other alternative means that it may occur to persons skilled in the art that are all in claim scope of the present invention.
Claims (4)
1. make the method for layer carbon brush, it is characterized in that, may further comprise the steps: A, Powdered raw material of wood-charcoal material is made monolayer carbon block in mould inner pressure, then monolayer carbon block is heat-treated; B, the stack of plural monolayer carbon block are placed one deck insulation film between every two continuous monolayer carbon block, and pressing is compressed to one, makes sandwich charcoal piece; C, sandwich charcoal piece heat-treated makes layer carbon brush, in the described steps A, under 400 ℃-600 ℃ to monolayer carbon block heat treatment 15 hours to 20 hours; Among the described step C, to sandwich charcoal piece heat treatment 1 hour to 10 hours, described insulation film was the phenolic resins base film under 100 ℃-300 ℃.
2. the method for manufacturing layer carbon brush according to claim 1 is characterized in that, the thickness of the insulation film among the described step B is no more than 200 μ m.
3. the method for manufacturing layer carbon brush according to claim 1 and 2 is characterized in that, described raw material of wood-charcoal material package is drawn together native graphite, synthetic graphite and binding agent.
4. the method for manufacturing layer carbon brush according to claim 3 is characterized in that, described binding agent is selected from one or more in pitch, phenolic resins and the epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710037931A CN101055964B (en) | 2007-03-08 | 2007-03-08 | Method for making the layer carbon brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710037931A CN101055964B (en) | 2007-03-08 | 2007-03-08 | Method for making the layer carbon brush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101055964A CN101055964A (en) | 2007-10-17 |
| CN101055964B true CN101055964B (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710037931A Active CN101055964B (en) | 2007-03-08 | 2007-03-08 | Method for making the layer carbon brush |
Country Status (1)
| Country | Link |
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| CN (1) | CN101055964B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19913599A1 (en) * | 1999-03-25 | 2000-09-28 | Schunk Kohlenstofftechnik Gmbh | Multilayer carbon brush for small or universal motor for e.g. washing machine application has at least three sandwiched electrical isolated layers made of particularly carbon material on front part areas of its running surface |
| EP1128496A1 (en) * | 2000-02-22 | 2001-08-29 | Denso Corporation | Multi-layered brush of rotary electric machine and method of manufacturing the same |
| CN1639925A (en) * | 2002-03-04 | 2005-07-13 | 申克碳化技术股份有限公司 | Method for production of a multi-layer carbon brush |
-
2007
- 2007-03-08 CN CN200710037931A patent/CN101055964B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19913599A1 (en) * | 1999-03-25 | 2000-09-28 | Schunk Kohlenstofftechnik Gmbh | Multilayer carbon brush for small or universal motor for e.g. washing machine application has at least three sandwiched electrical isolated layers made of particularly carbon material on front part areas of its running surface |
| EP1128496A1 (en) * | 2000-02-22 | 2001-08-29 | Denso Corporation | Multi-layered brush of rotary electric machine and method of manufacturing the same |
| CN1639925A (en) * | 2002-03-04 | 2005-07-13 | 申克碳化技术股份有限公司 | Method for production of a multi-layer carbon brush |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平2-94381A 1990.04.05 |
| JP特开昭56-153674A 1981.11.27 |
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| CN101055964A (en) | 2007-10-17 |
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Owner name: SHANGHAI TOYO TANSO CO., LTD. Effective date: 20121213 |
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Free format text: CORRECT: ADDRESS; FROM: 201600 SONGJIANG, SHANGHAI TO: 201611 SONGJIANG, SHANGHAI |
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Effective date of registration: 20121213 Address after: 201611 Shanghai City, Songjiang District Frestech Road No. 486 Patentee after: Shanghai Toyo Tanso Co., Ltd. Patentee after: Shanghai Toyo Tanso Co., Ltd. Address before: 201600 Shanghai city Songjiang District Yuyang Road No. 150 Patentee before: Shanghai Toyo Tanso Co., Ltd. |