CN101480927B - Netted sintered carbon-copper composite material pantograph pan and method for producing the same - Google Patents
Netted sintered carbon-copper composite material pantograph pan and method for producing the same Download PDFInfo
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- CN101480927B CN101480927B CN2009100468754A CN200910046875A CN101480927B CN 101480927 B CN101480927 B CN 101480927B CN 2009100468754 A CN2009100468754 A CN 2009100468754A CN 200910046875 A CN200910046875 A CN 200910046875A CN 101480927 B CN101480927 B CN 101480927B
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Abstract
The invention relates to a netty sintered carbon-copper composite material pantograph pan and a production method thereof, belonging to the technical field of electric locomotive pantograph pans and the manufacture method thereof. The pantograph pan is manufactured in five procedures of sheet stamping, heat pressing and solidification, sintering, processing and formation, as well as post-treatment. The pantograph pan consists of a plurality of layers of sheet-shaped materials which are flatly paved and overlapped, and the shape and the size of the pantograph pan conform to national technical standards on electric locomotive. The sheet-shaped materials comprise graphite paper and a composite layer, the composite layer consists of loose carbon cloth with meshes and paste glue which is coated on the loose carbon cloth and formed by mixing graphite powder, copper powder, titanium powder and hot setting resin. The order for the flat paving and overlapping of the sheet-shaped materials is as follows: a plurality of composite layers are flatly paved and overlapped between two pieces of graphite paper. The pantograph pan has excellent mechanical property, electricity conductivity and frictional wear property, and is particularly suitable to be used as the electric locomotive pantograph pan. The production method of the pantograph pan has the advantages of low requirement for equipment, simple process, low production cost and easy industrialized production realization.
Description
Technical field
The present invention relates to a kind of netted sintered carbon-copper composite material pantograph pan and manufacture method thereof, belong to the technical field of electric locomotive pantograph sliding plate and manufacturing thereof.
Expansion along with the electrified railway construction scale, the raising of electric locomotive running velocity, electric locomotive pantograph sliding plate is had higher requirement, analyze according to electric locomotive pantograph sliding plate application feature in recent years, domestic at present at copper-base powder metallurgy slide plate, pure carbon slide plate, the metal-impregnated carbon slide of usefulness, there are many problems.The copper-base powder metallurgy slide plate is a main raw material(s) with the copper alloy powder, processes through powder metallurgical technique.Its advantage is that hardness, wear-resisting, intensity, electric conductivity are all relatively good, and its shortcoming is that the wearing and tearing of electrical network lead are big, and the electrical network lead is short service life, and it is cumbersome to change the operation of electrical network lead, and cost is very high.The advantage of pure carbon slide plate is good to the contact line conducting wire antifriction quality; arc resistance is good; in use, can on contact line conducting wire, form one deck carbon film, thereby protect contact line conducting wire effectively; it is also very little to radio signal interference in addition; shortcoming is that self intensity is lower, the crisp frangibility of property and fall piece, and electrical resistivity is bigger; so service life is short, easily causes accident between pantograph.Metal-impregnated carbon slide is that common carbon slide plate is flooded liquid metal under High Temperature High Pressure, make in its pore that penetrates into material with carbon element, in carbon base body, form fine and closely woven metal net shaped structure, advantage is that contact resistance is little, strengthened lubricity, reduced the wearing and tearing to the electrical network lead, prolonged the service life of electrical network lead, intensity, wear resisting property are all better.Shortcoming is: complex manufacturing, and often occur hole phenomenon pockety in the carbon stick behind the sintering, and then molten metal can't be immersed in the hole equably, cause the quality of product and technical index to fail to act and think in the same way.
Publication number is that the patent of invention of CN1178745A discloses the carbon-carbon composite material pantograph slide that chopped fiber strengthens, with the coppered carbon powder is basis material, the employing short carbon fiber is an intensifier, and adopt thermosetting resin as lining cement, and adopt the method that hygrometric state mixes or dry state is mixed, raw material is fully mixed, cold pressing then or hot-forming, efficiently solve slide plate itself and to the problem of electrical network lead serious wear, but mechanical strength is still not enough, electrical resistivity is higher.
Publication number is that the patent of invention of CN1265429A is improved the foregoing invention patent, adopts the composite carbon-copper material reinforced with continuous long carbon fiber pantograph pan.Each component mixing granulation such as metal such as carbonaceous material such as graphite, coke, carbon black and lead, tin and lining cement is adopted in this invention, then its copper facing is obtained substrate aggregate, raw material fully mixed cold pressing, in cold pressure procedure, add continuous long carbon fiber, and then carry out hot pressing or hot extrusion processing, obtain required slide plate.Though this slide plate has good friction and wear behavior, dynamic ductility is still not enough.
Summary of the invention
The objective of the invention is deficiency, a kind of netted sintered carbon-copper-carbon composite pantograph pan 1 is provided at prior art.This slide plate is an integral type arc line type slide plate, and the metallographic structure of material is the three-dimensional network shape, is evenly distributed, and the Combination property of material is good, has good mechanical performance, good electric conductivity and friction and wear behavior.
For realizing above purpose, the present invention by the following technical solutions.Existing accompanying drawings it.Described pantograph pan is made by netted sintered carbon-carbon/carbon-copper composite material, shape and size meet the pantograph pan of State Grid's locomotive technology standard, the flaky material that described netted sintered carbon-carbon/carbon-copper composite material is superimposed together by multilayer tiling is through hot-press solidifying, sintering is prepared from, flaky material comprises graphite paper 2 and composite bed 3, composite bed 3 by the band mesh loose carbon cloth and the coating thereon by graphite powder, copper powder, titanium valve, the pasty state glue that thermosetting resin mixes is formed, and the superimposed order of the tiling of flaky material is that 3 tiling of MULTILAYER COMPOSITE layer are superimposed between two graphite papers 2.
Second purpose of the present invention provides the manufacture method of described pantograph pan.For realizing above purpose, the present invention by the following technical solutions.This method comprises five processes, system embryo: the stock that makes the preparation pantograph pan; Hot-press solidifying: make the stock compact curing; Sintering: the stock that suppresses is carried out high-temperature treatment; Shape: the sintering stock is processed into shape and the big or small pantograph pan that meets State Grid's locomotive technology standard; And post-processing: all micropores with in the thermosetting resin sealing pantograph pan get netted sintered carbon-copper composite material pantograph pan.
Now be described with reference to the accompanying drawings technical scheme of the present invention.A kind of manufacture method of netted sintered carbon-copper composite material pantograph pan 1 is characterized in that, comprises following operation:
The first procedure system embryo
With copper powder, graphite powder, titanium valve and thermosetting resin are uniformly mixed into pasty state glue, copper powder wherein, the mean grain size of graphite powder and titanium valve is respectively 8 μ m, 120 μ m and 80 μ m, copper powder: graphite powder: the weight ratio of titanium valve is 40～60: 26～40: 14～20, powder: the volume ratio of thermosetting resin is 1: 2～3, thermosetting resin is phenol resin or epoxy resin, pasty state glue is applied on the loose carbon cloth of band mesh, wipe off, powder in the pasty state glue is filled in the gap of the mesh of carbon cloth and fibrous bundle rib, make composite bed 3, composite bed 3 tilings are superimposed together from level to level, till the height of applications as laminates reaches desired height, after respectively spreading a graphite paper 2, the upper and lower surface of applications as laminates puts into the drying oven preliminary drying, preliminary drying temperature and preliminary drying time are respectively 85 ℃～95 ℃ and 2 hours, get the stock of reticulated carbon-carbon/carbon-copper composite material;
The second operation work hot-press solidifying
The stock that first procedure is obtained is placed on the hot press pressurized, heated until curing, and heating-up temperature, moulding pressure and time of heat are respectively 160 ℃～200 ℃, 35MPa～40MPa and 20 minutes～50 minutes, the curing stock of reticulated carbon-carbon/carbon-copper composite material;
The three process sintering
The curing stock that second operation work is obtained is put retort into and is carried out sintering, and sinter point and time are respectively 1000 ℃～1100 ℃ and 10 hours, netted sintered carbon-carbon/carbon-copper composite material;
The 4th procedure shapes
According to State Grid's locomotive technology standard, netted sintered carbon-carbon/carbon-copper composite material that three process is obtained carries out machine up, gets the half-blank that shape and size meet the pantograph pan of State Grid's locomotive technology standard;
The five processes post-processing
The half-blank of the pantograph pan that the 4th procedure is obtained is immersed in the thermosetting resin, under the pressure of 5MPa～8MPa, this half-blank is carried out high-pressure impregnation, thermosetting resin is phenol resin or epoxy resin, block up the micropore that is stored in this half-blank, drying gets netted sintered carbon-copper composite material pantograph pan 1.
Technical scheme of the present invention is further characterized in that the loose carbon cloth of described band mesh is worked out by carbon fiber wire.After having adopted the loose carbon cloth of the band mesh of working out, make that the long fibre bundle weaves mutually, tension mutually, thereby make the tension effect of carbon fiber obtain maximum performance, guarantee that from micromechanism the pantograph pan of making has good mechanical performance and wear-resisting and antifriction performance.Powder enters in carbon cloth mesh and the fibrous bundle rib gap, make it among a small circle, realize partial metallurgy, this is just as metal-impregnated carbon slide, and copper powder forms fine and closely woven space three-dimensional net structure in carbon fiber substrate, and its thermal conductivity and conductivity all are improved.In addition, netted copper has also been reinforced the application force of cloth interlayer.The purpose that adds titanium valve mainly is to improve the anchoring strength of copper and carbon.The effect of graphite powder super fatting agent, the graphite paper of both sides outermost plays the lubricating effect to the electrical network lead.
Compare with background technology, the present invention has the following advantages:
1, the excellent mechanical performances of netted sintered carbon-copper of the present invention-existing fiber reinforced composite of carbon composite pantograph pan, the excellent conductive capability that carbon slide plate excellent lubricating properties and metal-impregnated carbon slide are also arranged, the electrical network lead wearing and tearing of electrified railway are few, and self wears away little.
2, the inside and outside quality uniformity of product, resistance value is stable
The inside and outside quality uniformity of pantograph pan of the present invention, resistance value is stable, is the required desirable pantograph pan of Modern High-Speed railway electric locomotive.
3, method of the present invention is low for equipment requirements, and technology is simple, and productive costs is low, is easy to realize suitability for industrialized production.
Description of drawings
Fig. 1 is the front elevation of pantograph pan of the present invention, and among the figure, 1 is reticular lamination carbon carbon-copper composite material pantograph pan, and there is the cross section at the A-A place.Fig. 2 is the section drawing that is arranged in the A-A place of Fig. 1.Among the figure, 2 is graphite paper, and 3 is composite bed.
The specific embodiment
Now describe technical scheme of the present invention in conjunction with the accompanying drawings and embodiments in detail.All embodiment all operate according to above-mentioned preparation method's operation, and each following embodiment is only enumerated crucial technical data.
In first procedure, thermosetting resin is a phenol resin, copper powder: graphite powder: the weight ratio of titanium valve is 40: 40: 20, powder: the volume ratio of thermosetting resin is 1: 2,95 ℃ of following preliminary dryings; In the second operation work, stock under the temperature of the pressure of 40MPa and 200 ℃, hot pressing 50 minutes; In the three process, sinter point is 1100 ℃; In the five processes, thermosetting resin is a phenol resin, under the pressure of 8MPa, the half-blank of pantograph pan is carried out high-pressure impregnation.
The key technical indexes of netted sintered carbon-copper composite material pantograph pan that present embodiment makes: density, electrical resistivity, compressive strength, bending strength and dynamic ductility are respectively 2.03g/cm
3, 18.8 μ Ω m, 122MPa, 74.1MPa and 3.2J/cm
2
Embodiment 2
In first procedure, thermosetting resin is a phenol resin, copper powder: graphite powder: the weight ratio of titanium valve is 50: 34: 16, powder: the volume ratio of thermosetting resin is 1: 2.5,90 ℃ of following preliminary dryings; In the second operation work, stock under the temperature of the pressure of 37.5MPa and 180 ℃, hot pressing 35 minutes; In the three process, sinter point is 1050 ℃; In the five processes, thermosetting resin is a phenol resin, under the pressure of 6.5MPa, the half-blank of pantograph pan is carried out high-pressure impregnation.
The key technical indexes of netted sintered carbon-copper composite material pantograph pan that present embodiment makes: density, electrical resistivity, compressive strength, bending strength and dynamic ductility are respectively 2.15g/cm
3, 14.3 μ Ω m, 143MPa, 86.4MPa and 4.0J/cm
2
Embodiment 3
In first procedure, thermosetting resin is an epoxy resin, copper powder: graphite powder: the weight ratio of titanium valve is 60: 26: 14, powder: the volume ratio of thermosetting resin is 1: 3,85 ℃ of following preliminary dryings; In the second operation work, stock under the temperature of the pressure of 35MPa and 160 ℃, hot pressing 20 minutes; In the three process, sinter point is that thermosetting resin is an epoxy resin in 1000 ℃ of five processes, under the pressure of 5MPa, the half-blank of pantograph pan is carried out high-pressure impregnation.
The key technical indexes of netted sintered carbon-copper composite material pantograph pan that present embodiment makes: density, electrical resistivity, compressive strength, bending strength and dynamic ductility are respectively 2.38g/cm
3, 9.6 μ Ω m, 134MPa, 85.0MPa and 3.6J/cm
2
Claims (3)
1. netted sintered carbon-copper-carbon composite pantograph pan (1), it is characterized in that, described pantograph pan is made by netted sintered carbon-carbon/carbon-copper composite material, shape and size meet the pantograph pan of State Grid's locomotive technology standard, the flaky material that described netted sintered carbon-carbon/carbon-copper composite material is superimposed together by multilayer tiling is through hot-press solidifying, sintering is prepared from, flaky material comprises graphite paper (2) and composite bed (3), composite bed (3) by the band mesh loose carbon cloth and the coating thereon by graphite powder, copper powder, titanium valve, the pasty state glue that thermosetting resin mixes is formed, and the superimposed order of the tiling of flaky material is that MULTILAYER COMPOSITE layer (3) tiling is superimposed between two graphite papers (2).
2. the manufacture method of the described netted sintered carbon-copper of claim 1-carbon composite pantograph pan (1) is characterized in that, comprises following operation:
The first procedure system embryo
With copper powder, graphite powder, titanium valve and thermosetting resin are uniformly mixed into pasty state glue, copper powder wherein, the mean grain size of graphite powder and titanium valve is respectively 8 μ m, 120 μ m and 80 μ m, copper powder: graphite powder: the weight ratio of titanium valve is 40～60: 26～40: 14～20, powder: the volume ratio of thermosetting resin is 1: 2～3, thermosetting resin is phenol resin or epoxy resin, pasty state glue is applied on the loose carbon cloth of band mesh, wipe off, powder in the pasty state glue is filled in the gap of the mesh of carbon cloth and fibrous bundle rib, make composite bed (3), composite bed (3) tiling is superimposed together from level to level, till the height of applications as laminates reaches desired height, after respectively spreading a graphite paper (2), the upper and lower surface of applications as laminates puts into the drying oven preliminary drying, preliminary drying temperature and preliminary drying time are respectively 85 ℃～95 ℃ and 2 hours, get the stock of reticulated carbon-carbon/carbon-copper composite material;
The second operation work hot-press solidifying
The stock that first procedure is obtained is placed on the hot press pressurized, heated until curing, and heating-up temperature, moulding pressure and time of heat are respectively 160 ℃～200 ℃, 35MPa～40MPa and 20 minutes～50 minutes, the curing stock of reticulated carbon-carbon/carbon-copper composite material;
The three process sintering
The curing stock that second operation work is obtained is put retort into and is carried out sintering, and sinter point and time are respectively 1000 ℃～1100 ℃ and 10 hours, netted sintered carbon-carbon/carbon-copper composite material;
The 4th procedure shapes
According to State Grid's locomotive technology standard, netted sintered carbon-carbon/carbon-copper composite material that three process is obtained carries out machine up, gets the half-blank that shape and size meet the pantograph pan of State Grid's locomotive technology standard;
The five processes post-processing
The half-blank of the pantograph pan that the 4th procedure is obtained is immersed in the thermosetting resin, under the pressure of 5MPa～8MPa, this half-blank is carried out high-pressure impregnation, thermosetting resin is phenol resin or epoxy resin, block up the micropore that is stored in this half-blank, drying gets netted sintered carbon-copper composite material pantograph pan (1).
3. the manufacture method of netted sintered carbon-copper according to claim 2-carbon composite pantograph pan (1) is characterized in that the loose carbon cloth of described band mesh is worked out by carbon fiber wire.。
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100468754A CN101480927B (en) | 2009-03-02 | 2009-03-02 | Netted sintered carbon-copper composite material pantograph pan and method for producing the same |
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| CN101480927B true CN101480927B (en) | 2011-01-12 |
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| CN109604604A (en) * | 2018-11-13 | 2019-04-12 | 大同新成新材料股份有限公司 | One kind being based on fibre-reinforced pantograph pan preparation process |
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