CN109604612A - A kind of preparation process of the netted compound pantograph pan of copper carbon - Google Patents
A kind of preparation process of the netted compound pantograph pan of copper carbon Download PDFInfo
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- CN109604612A CN109604612A CN201811344642.8A CN201811344642A CN109604612A CN 109604612 A CN109604612 A CN 109604612A CN 201811344642 A CN201811344642 A CN 201811344642A CN 109604612 A CN109604612 A CN 109604612A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/18—Current collectors for power supply lines of electrically-propelled vehicles using bow-type collectors in contact with trolley wire
- B60L5/20—Details of contact bow
- B60L5/205—Details of contact bow with carbon contact members
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- Chemical & Material Sciences (AREA)
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- Power Engineering (AREA)
- Transportation (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a kind of preparation processes of netted compound pantograph pan of copper carbon, comprising the following steps: S1, raw material；S2, be uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 80-100 DEG C: copper powder 30-50, titanium valve 5-8, graphite powder 60-70, carbon nanotube 3-5, phenolic resin 6-8 obtain mixed slurry；One layer of S3, mold bottom brush mixed slurry, it is required that thickness is between 2-4 ㎜, then it is laid with one layer of carbon fiber screen cloth, one layer of mixed slurry is brushed in carbon fiber screen cloth again, also require that the thickness of this layer of mixed slurry between 2-4 ㎜, then it is laid with one layer of copper foil net, mixed slurry in the online brush a layer thickness of this copper foil between 2-4 ㎜ again, mixed slurry in the online brush a layer thickness of this copper foil between 2-4 ㎜, laying carbon fiber screen cloth again, and so on, until integral thickness reaches 20-25cm；S4, by the mold in S3 be put into baking oven dry after it is hot-forming；S5, sintering；S6, processing obtain blank；S7, dipping.
Description
Technical field
The present invention relates to a kind of pantograph pans, more particularly to a kind of preparation work of netted compound pantograph pan of copper carbon
Skill.
Background technique
The dynamic connector of electric locomotive is exactly pantograph carbon slide, and the important materials of carbon slipper, that is, carbon draw runner.Its work
It is exactly that carbon draw runner and contact power grid CONTACT WITH FRICTION take electricity as principle, electric locomotive is sent to, thus to maintain its normal operation.By
It is to carry out in the natural environment in working environment, exposes sleet, ice and snow sometimes in atrocious weather, and is also transported in high speed
Row constantly generates friction with contact power grid, the generation phenomena such as process of friction has electric arc, impact, thus also becomes frequency
The component of numerous replacement.
It can be seen that carbon draw runner material comprehensive performance is its necessary condition, wherein high intensity, high tenacity, low resistance, wear-resisting
And the sliding contact material of self-lubricating property is optimal selection.
Nowadays electric locomotive pantograph carbon slide plate is divided into three kinds: powder shaped charge liner, pure carbon slipper, C-base composte material
Slide plate.And to guarantee that the electric conductivity of carbon slipper and self-lubricity generally can all take leaching smithcraft, but current carbon slipper
It is complex to soak smithcraft, and efficiency is relatively low.
Therefore, applicant proposes a kind of preparation process of netted compound pantograph pan of copper carbon, and the carbon slipper of preparation is each
Performance indicator meets national standard, and simple process, high-efficient.
Summary of the invention
In view of the above drawbacks of the prior art, it is multiple that technical problem to be solved by the invention is to provide a kind of netted copper carbon
Close the preparation process of pantograph pan.
To achieve the above object, the present invention provides a kind of preparation processes of netted compound pantograph pan of copper carbon, including
Following steps:
S1, raw material:
Copper powder, fineness are 90-120 mesh, purity 99.99%；
Titanium valve, fineness are 90-120 mesh, purity 99.99%；
Graphite powder, fineness is 130-150 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are between 0.5-1 ㎜；
Copper foil net, copper foil linear diameter is between 0.2-0.5, and mesh aperture is between 0.5-0.7；
Phenolic resin, fineness is not more than 80 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 80-100 DEG C: copper powder 30-
50, titanium valve 5-8, graphite powder 60-70, carbon nanotube 3-5, phenolic resin 6-8 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that thickness between 2-4 ㎜, then be laid with one layer of carbon fiber screen cloth, then
One layer of mixed slurry is brushed in carbon fiber screen cloth, also requires that the thickness of this layer of mixed slurry between 2-4 ㎜, is then laid with one layer
Copper foil net, then the mixed slurry in the online brush a layer thickness of this copper foil between 2-4 ㎜, then in the online brush a layer thickness of this copper foil
Mixed slurry, laying carbon fiber screen cloth between 2-4 ㎜, and so on, until integral thickness reaches 20-25cm；
S4, the mold in S3 is put into baking oven, by 60-80 DEG C drying 1-2 hours, then take out, place heat-pressing compound machine
In, it is hot-forming by the pressure of 10-15Mpa, it is desirable that compression ratio is not higher than 0.9, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1200-1400 DEG C, is sintered,
Sintering time 2-3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, until air pressure reaches 8-10Mpa in impregnating autoclave, is then kept for 3-4 hours, into
Row dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
The beneficial effects of the present invention are: the present invention implements relatively simple, and cost is relatively low, and finished product, which has, preferably leads
Electrical property and wearability, self-lubrication.
Specific embodiment
Below with reference to embodiment, the invention will be further described:
Embodiment one
A kind of preparation process of the netted compound pantograph pan of copper carbon, comprising the following steps:
S1, raw material:
Copper powder, fineness are 100 mesh, purity 99.99%；
Titanium valve, fineness are 100 mesh, purity 99.99%；
Graphite powder, fineness is 140 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 0.6 ㎜ or so；
Copper foil net, copper foil linear diameter is between 0.4, and mesh aperture is 0.6 or so；
Phenolic resin, fineness is not more than 60 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 90 DEG C: copper powder 45, titanium valve
7, graphite powder 68, carbon nanotube 4, phenolic resin 8 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 3 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 3 ㎜ or so, is then laid with one layer of copper foil
Net, then in the mixed slurry of online 3 ㎜ of brush a layer thickness of this copper foil or so, then in the online brush a layer thickness of this copper foil on the left side 3 ㎜
The mixed slurry on the right side is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 25cm；
S4, the mold in S3 is put into baking oven, is dried 1.5 hours, is then taken out by 70 DEG C, placed in heat-pressing compound machine,
It is hot-forming by the pressure of 12Mpa, it is desirable that compression ratio is not higher than 0.85, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1400 DEG C, is sintered, when sintering
Between 2.5 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 9Mpa in impregnating autoclave, then holding 3.5 hours, are carried out
Dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
Embodiment two
A kind of preparation process of the netted compound pantograph pan of copper carbon, comprising the following steps:
S1, raw material:
Copper powder, fineness are 120 mesh, purity 99.99%；
Titanium valve, fineness are 120 mesh, purity 99.99%；
Graphite powder, fineness is 150 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 0.8 ㎜ or so；
Copper foil net, copper foil linear diameter is in 0.2-0.5 or so, and mesh aperture is in 0.5-0.7 or so；
Phenolic resin, fineness is not more than 80 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 100 DEG C: copper powder 50, titanium
Powder 8, graphite powder 65, carbon nanotube 4, phenolic resin 7 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 4 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 4 ㎜ or so, is then laid with one layer of copper foil
Net, then the online brush a layer thickness of this copper foil 4 ㎜ or so mixed slurry, then in the online brush a layer thickness of this copper foil in 3 ㎜
The mixed slurry of left and right is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 22cm or so；Wherein it is possible to
First in mold bottom be first laid with one layer of carbon fiber screen cloth, then in the last layer, using carbon fiber screen cloth so that it is convenient to take out,
Molding.
S4, the mold in S3 is put into baking oven, is dried 2 hours, is then taken out by 80 DEG C, place heat-pressing compound machine
In, it is hot-forming by the pressure of 15Mpa, it is desirable that compression ratio is not higher than 0.8, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1300 DEG C, is sintered, when sintering
Between 3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 10Mpa in impregnating autoclave, then holding 3.5 hours, are carried out
Dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
Embodiment three
A kind of preparation process of the netted compound pantograph pan of copper carbon, comprising the following steps:
S1, raw material:
Copper powder, fineness are 110 mesh, purity 99.99%；
Titanium valve, fineness are 110 mesh, purity 99.99%；
Graphite powder, fineness is 130 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 1 ㎜ or so；
Copper foil net, copper foil linear diameter is 0.4 or so, and mesh aperture is in 0.5-0.7 or so；
Phenolic resin, fineness is not more than 80 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 80 DEG C: copper powder 42, titanium valve
5.3, graphite powder 67, carbon nanotube 3.2, phenolic resin 7.5 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 2 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 2 ㎜ or so, is then laid with one layer of copper foil
Net, then the online brush a layer thickness of this copper foil 2 ㎜ or so mixed slurry, then in the online brush a layer thickness of this copper foil in 2 ㎜
The mixed slurry of left and right is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 25cm；
S4, the mold in S3 is put into baking oven, is dried 2 hours, is then taken out by 70 DEG C, placed in heat-pressing compound machine, led to
The pressure for crossing 12Mpa is hot-forming, it is desirable that compression ratio is not higher than 0.9, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1200 DEG C, is sintered, when sintering
Between 3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 10Mpa in impregnating autoclave, then holding 4 hours, are soaked
Stain；
S8, S7 treated blank is taken out, then clears up surface, is modified.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (6)
1. a kind of preparation process of the netted compound pantograph pan of copper carbon, which comprises the following steps:
S1, raw material: copper powder, titanium valve, graphite powder, carbon nanotube, carbon fiber screen cloth, copper foil net, phenolic resin；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 80-100 DEG C: copper powder 30-
50, titanium valve 5-8, graphite powder 60-70, carbon nanotube 3-5, phenolic resin 6-8 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that thickness between 2-4 ㎜, then be laid with one layer of carbon fiber screen cloth, then
One layer of mixed slurry is brushed in carbon fiber screen cloth, also requires that the thickness of this layer of mixed slurry between 2-4 ㎜, is then laid with one layer
Copper foil net, then the mixed slurry in the online brush a layer thickness of this copper foil between 2-4 ㎜, then in the online brush a layer thickness of this copper foil
Mixed slurry, laying carbon fiber screen cloth between 2-4 ㎜, and so on, until integral thickness reaches 20-25cm；
S4, the mold in S3 is put into baking oven, by 60-80 DEG C drying 1-2 hours, then take out, place heat-pressing compound machine
In, it is hot-forming by the pressure of 10-15Mpa, it is desirable that compression ratio is not higher than 0.9, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1200-1400 DEG C, is sintered,
Sintering time 2-3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, until air pressure reaches 8-10Mpa in impregnating autoclave, is then kept for 3-4 hours, into
Row dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
2. preparation process as described in claim 1, which is characterized in that in S3, be first first laid with one layer of carbon fiber in mold bottom
Screen cloth, then in the last layer, it is laid with another layer of carbon fiber screen cloth.
3. preparation process as described in claim 1, which is characterized in that in S3, copper powder, fineness is 90-120 mesh, and purity is
99.99%；
Titanium valve, fineness are 90-120 mesh, purity 99.99%；
Graphite powder, fineness is 130-150 mesh, using crystalline graphite powder, purity 99.99%；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are between 0.5-1 ㎜；
Copper foil net, copper foil linear diameter is between 0.2-0.5, and mesh aperture is between 0.5-0.7；
Phenolic resin, fineness is not more than 80 mesh when solid-state.
4. preparation process as described in claim 1, which comprises the following steps:
S1, raw material:
Copper powder, fineness are 100 mesh, purity 99.99%；
Titanium valve, fineness are 100 mesh, purity 99.99%；
Graphite powder, fineness is 140 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 0.6 ㎜ or so；
Copper foil net, copper foil linear diameter is between 0.4, and mesh aperture is 0.6 or so；
Phenolic resin, fineness is not more than 60 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 90 DEG C: copper powder 45, titanium valve
7, graphite powder 68, carbon nanotube 4, phenolic resin 8 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 3 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 3 ㎜ or so, is then laid with one layer of copper foil
Net, then in the mixed slurry of online 3 ㎜ of brush a layer thickness of this copper foil or so, then in the online brush a layer thickness of this copper foil on the left side 3 ㎜
The mixed slurry on the right side is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 25cm；
S4, the mold in S3 is put into baking oven, is dried 1.5 hours, is then taken out by 70 DEG C, placed in heat-pressing compound machine,
It is hot-forming by the pressure of 12Mpa, it is desirable that compression ratio is not higher than 0.85, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1400 DEG C, is sintered, when sintering
Between 2.5 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 9Mpa in impregnating autoclave, then holding 3.5 hours, are carried out
Dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
5. preparation process as described in claim 1, which comprises the following steps:
S1, raw material:
Copper powder, fineness are 120 mesh, purity 99.99%；
Titanium valve, fineness are 120 mesh, purity 99.99%；
Graphite powder, fineness is 150 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 0.8 ㎜ or so；
Copper foil net, copper foil linear diameter is in 0.2-0.5 or so, and mesh aperture is in 0.5-0.7 or so；
Phenolic resin, fineness is not more than 80 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 100 DEG C: copper powder 50, titanium
Powder 8, graphite powder 65, carbon nanotube 4, phenolic resin 7 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 4 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 4 ㎜ or so, is then laid with one layer of copper foil
Net, then the online brush a layer thickness of this copper foil 4 ㎜ or so mixed slurry, then in the online brush a layer thickness of this copper foil in 3 ㎜
The mixed slurry of left and right is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 22cm or so；
S4, the mold in S3 is put into baking oven, is dried 2 hours, is then taken out by 80 DEG C, placed in heat-pressing compound machine, led to
The pressure for crossing 15Mpa is hot-forming, it is desirable that compression ratio is not higher than 0.8, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1300 DEG C, is sintered, when sintering
Between 3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 10Mpa in impregnating autoclave, then holding 3.5 hours, are carried out
Dipping；
S8, S7 treated blank is taken out, then clears up surface, is modified.
6. preparation process as described in claim 1, which comprises the following steps:
S1, raw material:
Copper powder, fineness are 110 mesh, purity 99.99%；
Titanium valve, fineness are 110 mesh, purity 99.99%；
Graphite powder, fineness is 130 mesh, using crystalline graphite powder, purity 99.99%；
Carbon nanotube；
Carbon fiber screen cloth, carbon fiber diameter, mesh aperture are in 1 ㎜ or so；
Copper foil net, copper foil linear diameter is 0.4 or so, and mesh aperture is in 0.5-0.7 or so；
Phenolic resin, fineness is not more than 80 mesh when solid-state；
S2, it is uniformly mixed after taking out according to its corresponding weight fraction ratio by following components and be heated to 80 DEG C: copper powder 42, titanium valve
5.3, graphite powder 67, carbon nanotube 3.2, phenolic resin 7.5 obtain mixed slurry；
One layer of S3, mold bottom brush mixed slurry, it is desirable that then thickness is laid with one layer of carbon fiber screen cloth in 2 ㎜ or so, then in carbon
One layer of mixed slurry is brushed on fiber mesh cloth, also requires that the thickness of this layer of mixed slurry in 2 ㎜ or so, is then laid with one layer of copper foil
Net, then the online brush a layer thickness of this copper foil 2 ㎜ or so mixed slurry, then in the online brush a layer thickness of this copper foil in 2 ㎜
The mixed slurry of left and right is laid with carbon fiber screen cloth, and so on, until integral thickness reaches 25cm；
S4, the mold in S3 is put into baking oven, is dried 2 hours, is then taken out by 70 DEG C, placed in heat-pressing compound machine, led to
The pressure for crossing 12Mpa is hot-forming, it is desirable that compression ratio is not higher than 0.9, obtains adobe；
S5, adobe is put into retort, is filled with nitrogen as protection gas, is heated to 1200 DEG C, is sintered, when sintering
Between 3 hours；
S6, S5 treated adobe is taken out, is machined to need size, obtains blank；
S7, phenolic resin is added in impregnating autoclave, is heated to 100 DEG C, is then placed in blank, it is ensured that phenolic resin floods completely
Blank is then shut off impregnating autoclave, and is passed through nitrogen, and until air pressure reaches 10Mpa in impregnating autoclave, then holding 4 hours, are soaked
Stain；
S8, S7 treated blank is taken out, then clears up surface, is modified.
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