CN104966655B - A kind of annular carbon fiber negative electrode and preparation method thereof - Google Patents
A kind of annular carbon fiber negative electrode and preparation method thereof Download PDFInfo
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- CN104966655B CN104966655B CN201510357767.4A CN201510357767A CN104966655B CN 104966655 B CN104966655 B CN 104966655B CN 201510357767 A CN201510357767 A CN 201510357767A CN 104966655 B CN104966655 B CN 104966655B
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Abstract
A kind of annular carbon fiber negative electrode and preparation method thereof, it is related to a kind of negative electrode and preparation method thereof.The invention aims to solve existing carbon-fiber cathode for plane form negative electrode, it is impossible to carry out the problem of uniform radiation modification is handled to complex part surface.Device includes shading ring, screw, electrode, annular interior insulation ring, conducting ring and carbon fiber bundle；The inside of described electrode is provided with annular interior insulation ring, and the upper and lower ends of electrode are equipped with conducting ring；The upper and lower ends of annular interior insulation ring and conducting ring are equipped with shading ring；One end of carbon fiber bundle is welded in the through hole of electrode, and the other end of carbon fiber bundle passes the through hole of annular interior insulation ring.Preparation method：First, annular interior insulation ring and electrode are prepared；2nd, carbon fiber bundle is prepared；3rd, electrode and conducting ring are fixed, electrode and annular interior insulation ring is fixed；4th, shading ring is fixed on the surface of annular interior insulation ring and conducting ring.The present invention can obtain a kind of annular carbon fiber negative electrode.
Description
Technical field
The present invention relates to a kind of negative electrode and preparation method thereof.
Background technology
Carbon fibre material is because transmitting threshold value that it has is low, it is fast to start, good electron beam uniformity, long lifespan the advantages of, be
One of ideal material of electronics occurring source.The negative electrode prepared using carbon fibre material is widely used in microwave device, high current electricity
The fields such as beamlet irradiation.The carbon fibre material negative electrode used at present is plane form negative electrode, for the surface spoke of flat work pieces
According to modified effect substantially, but for the workpiece with complex appearance, such as gear, bearing, it is impossible to workpiece surface is carried out uniform
Radiation modification processing.
The content of the invention
The invention aims to solve existing carbon-fiber cathode for plane form negative electrode, it is impossible to which complex part surface is entered
The problem of uniform radiation modification of row is handled, and a kind of annular carbon fiber negative electrode and preparation method thereof is provided.
A kind of annular carbon fiber negative electrode includes shading ring, screw, electrode, annular interior insulation ring, conducting ring and carbon fiber bundle；
The inside of described electrode is provided with annular interior insulation ring, and the upper and lower ends of electrode are equipped with conducting ring；In annular absolutely
The upper and lower ends of edge ring and conducting ring are equipped with shading ring；
Described shading ring is provided with screw, and screw is fixed shading ring, conducting ring and electrode by screw；
Uniform several through holes on described electrode and annular interior insulation ring, and through hole axial line and annular interior insulation on electrode
The axial line of through hole is overlapped on ring；One end of carbon fiber bundle is welded in the through hole of electrode, and the other end of carbon fiber bundle passes ring
The through hole of shape interior insulation ring.
A kind of preparation method of annular carbon fiber negative electrode, is completed according to the following steps：
First, use insulating materials to be drilled with through hole in uniform form, obtain annular interior insulation ring；By electrode material with uniform
Form be drilled with through hole, obtain electrode；
2nd, multi-strand carbon fiber silk is bundled into cylinder, then it is 10 to be immersed in P/Al atomic ratios:1st, mass fraction is 20%
Aluminium metaphosphate solution in infiltrate 35s~40s, then temperature be 500 DEG C heating 60min~70min, obtain carbon fiber bundle；
3rd, electrode and conducting ring are fixed together, then electrode and annular interior insulation ring is fixed together, then carbon is fine
One end of dimension beam is welded in the through hole of electrode, and the other end of carbon fiber bundle passes the through hole of annular interior insulation ring；
4th, shading ring is fixed on the surface of annular interior insulation ring and conducting ring, obtains annular carbon fiber negative electrode.
Advantages of the present invention：
First, carbon fiber bundle is evenly spaced on loop configuration electrode by the present invention, using the emission characteristic of carbon fiber bundle,
Equally distributed electronic beam current is formed in space, the part with complex appearance can be carried out at uniform surface irradiation modification
Reason；
2nd, the present invention is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70%~80%,
The present invention improves the scope of application of electron beam irradiation parts processed；
3rd, the annular carbon fiber negative electrode obtained using the present invention has Al to surface spraying2O3The stainless steel bearing of coating is carried out
The original loose particles shape surface of coating surface after electron beam irradiation 20 times, is changed into uniform remelting surface topography；
4th, the annular carbon fiber negative electrode obtained using the present invention is carried out after electron beam irradiation processing to matrix, enhances base
The abrasion resistance properties of body.
The present invention can obtain a kind of annular carbon fiber negative electrode.
Brief description of the drawings
Fig. 1 is a kind of top view of annular carbon fiber negative electrode described in embodiment one；
Fig. 2 is sectional views of the Fig. 1 along A-A；
Fig. 3 is line block diagram；
Fig. 4 is that surface spraying has Al2O3The SEM figures of the stainless steel bearing of coating；
Fig. 5 is that the annular carbon fiber negative electrode obtained using experiment one has Al to surface spraying2O3The stainless steel bearing of coating enters
SEM figures after row electron beam irradiation 20 times；
Fig. 6 is that surface spraying has Al2O3The SEM figures of the stainless steel bearing polishing scratch of coating；
Fig. 7 is that the annular carbon fiber negative electrode obtained using experiment one has Al to surface spraying2O3The stainless steel bearing of coating enters
The SEM figures of bearing after row electron beam irradiation 20 times.
Embodiment
Embodiment one：Present embodiment be a kind of annular carbon fiber negative electrode include shading ring 1, screw 2, electrode 3,
Annular interior insulation ring 4, conducting ring 5 and carbon fiber bundle 6；
The inside of described electrode 3 is provided with annular interior insulation ring 4, and the upper and lower ends of electrode 3 are equipped with conducting ring 5；Annular
The upper and lower ends of interior insulation ring 4 and conducting ring 5 are equipped with shading ring 1；
Described shading ring 1 is provided with screw 2, and screw is fixed shading ring 1, conducting ring 5 and electrode 3 by screw 2；
Uniform several through holes on described electrode 3 and annular interior insulation ring 4, and on electrode 3 in through hole axial line and annular
The axial line of through hole is overlapped on dead ring 4；One end of carbon fiber bundle 6 is welded in the through hole of electrode 3, carbon fiber bundle 6 it is another
End passes the through hole of annular interior insulation ring 4.
Fig. 1 is a kind of top view of annular carbon fiber negative electrode described in embodiment one；
Fig. 2 is sectional views of the Fig. 1 along A-A；1 is shading ring in Fig. 2, and 2 be screw, and 3 be electrode, and 4 be annular interior insulation ring,
5 be conducting ring, and 6 be carbon fiber bundle.
The advantage of present embodiment：
First, carbon fiber bundle 6 is evenly spaced on loop configuration electrode 3 by present embodiment, utilizes the transmitting of carbon fiber bundle 6
Property, forms equally distributed electronic beam current in space, can carry out uniform surface spoke to the part with complex appearance
According to modification；
2nd, present embodiment is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70%~
80%, present embodiment improves the scope of application of electron beam irradiation parts processed；
3rd, the annular carbon fiber negative electrode obtained using present embodiment has Al to surface spraying2O3The stainless steel bearing of coating
The original loose particles shape surface of coating surface after electron beam irradiation 20 times is carried out, is changed into uniform remelting surface topography；
4th, the annular carbon fiber negative electrode obtained using present embodiment is carried out after electron beam irradiation processing to matrix, enhancing
The abrasion resistance properties of matrix.
Present embodiment can obtain a kind of annular carbon fiber negative electrode.
Embodiment two：Present embodiment and the difference of specific implementation one are：On described electrode 3 in through hole
The heart is away from for 15mm, and the centre-to-centre spacing of through hole is 15mm on annular interior insulation ring 4.Other are identical with embodiment one.
Embodiment three：Present embodiment and the difference of specific implementation one or two are：Described carbon fiber bundle 6 reveals
The length for going out the inner surface of annular interior insulation ring 4 is 2cm~3cm.Other are identical with embodiment one or two.
Embodiment four：Present embodiment and the difference of specific implementation one or two are：The material of described shading ring 1
Matter is nylon；The material of described electrode 3 is red copper；The material of described annular interior insulation ring 4 is polytetrafluoroethylene (PTFE)；Described
The material of conducting ring 5 is brass.Other are identical with embodiment one or two.
Embodiment five：Present embodiment is that a kind of preparation method of annular carbon fiber negative electrode is complete according to the following steps
Into：
First, use insulating materials to be drilled with through hole in uniform form, obtain annular interior insulation ring 4；By electrode material with equal
The form of cloth is drilled with through hole, obtains electrode 3；
2nd, multi-strand carbon fiber silk is bundled into cylinder, then it is 10 to be immersed in P/Al atomic ratios:1st, mass fraction is 20%
Aluminium metaphosphate solution in infiltrate 35s~40s, then temperature be 500 DEG C heating 60min~70min, obtain carbon fiber bundle 6；
3rd, electrode 3 and conducting ring 5 are fixed together, then electrode 3 and annular interior insulation ring 4 is fixed together, then will
One end of carbon fiber bundle 6 is welded in the through hole of electrode 3, and the other end of carbon fiber bundle 6 passes the through hole of annular interior insulation ring 4；
4th, shading ring 1 is fixed on the surface of annular interior insulation ring 4 and conducting ring 5, obtains annular carbon fiber negative electrode.
The advantage of present embodiment：
First, carbon fiber bundle 6 is evenly spaced on loop configuration electrode 3 by present embodiment, utilizes the transmitting of carbon fiber bundle 6
Property, forms equally distributed electronic beam current in space, can carry out uniform surface spoke to the part with complex appearance
According to modification；
2nd, present embodiment is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70%~
80%, present embodiment improves the scope of application of electron beam irradiation parts processed；
3rd, the annular carbon fiber negative electrode obtained using embodiment has Al to surface spraying2O3The stainless steel bearing of coating enters
The original loose particles shape surface of coating surface after row electron beam irradiation 20 times, is changed into uniform remelting surface topography；
4th, the annular carbon fiber negative electrode obtained using present embodiment is carried out after electron beam irradiation processing to matrix, enhancing
The abrasion resistance properties of matrix.
Present embodiment can obtain a kind of annular carbon fiber negative electrode.
Embodiment six：The difference of present embodiment and embodiment five is：It is exhausted described in step one
Edge material is polytetrafluoroethylene (PTFE)；Electrode material described in step one is red copper；The material of conducting ring 5 described in step 3 is
Brass；The material of shading ring 1 described in step 4 is nylon.Other are identical with embodiment five.
Embodiment seven：The difference of present embodiment and embodiment five or six is：Described in step one
Carbon fiber bundle a diameter of 2mm.Other are identical with embodiment five or six.
Embodiment eight：The difference of present embodiment and embodiment five to seven is：Described in step 3
Carbon fiber bundle 6 expose annular interior insulation ring 4 inner surface length be 2cm~3cm.Other and embodiment five to seven
It is identical.
Embodiment nine：The difference of present embodiment and embodiment five to eight is：On described electrode 3
The centre-to-centre spacing of through hole is that the centre-to-centre spacing of through hole on 15mm, annular interior insulation ring 4 is 15mm.
Other are identical with embodiment five to eight.
Embodiment ten：The difference of present embodiment and embodiment five to nine is：Described in step 3
Electrode 3 and conducting ring 5 be screwed in together；Electrode 3 and conducting ring 5 described in step 3 are screwed in
Together；Electrode 3 and annular interior insulation ring 4 described in step 3 are screwed in together；Shielding described in step 4
Ring 1 is screwed on the surface of annular interior insulation ring 4 and conducting ring 5.Other and embodiment five to nine
It is identical.
Beneficial effects of the present invention are verified using tests below：
Experiment one：A kind of preparation method of annular carbon fiber negative electrode, is completed according to the following steps：
First, use insulating materials to be drilled with through hole in uniform form, obtain annular interior insulation ring 4；By electrode material with equal
The form of cloth is drilled with through hole, obtains electrode 3；
2nd, multi-strand carbon fiber silk is bundled into cylinder, then it is 10 to be immersed in P/Al atomic ratios:1st, mass fraction is 20%
Aluminium metaphosphate solution in infiltrate 35s, then in temperature be 500 DEG C of heating 60min, obtain carbon fiber bundle 6；
3rd, electrode 3 and conducting ring 5 are fixed together, then electrode 3 and annular interior insulation ring 4 is fixed together, then will
One end of carbon fiber bundle 6 is welded in the through hole of electrode 3, and the other end of carbon fiber bundle 6 passes the through hole of annular interior insulation ring 4；
4th, shading ring 1 is fixed on the surface of annular interior insulation ring 4 and conducting ring 5, obtains annular carbon fiber negative electrode；
Insulating materials described in step one is polytetrafluoroethylene (PTFE)；
Electrode material described in step one is red copper；
The material of conducting ring 5 described in step 3 is brass；
The material of shading ring 1 described in step 4 is nylon；
A diameter of 2mm of carbon fiber bundle described in step one；
The length that carbon fiber bundle 6 described in step 3 exposes the inner surface of annular interior insulation ring 4 is 2cm；
The centre-to-centre spacing of through hole is that the centre-to-centre spacing of through hole on 15mm, annular interior insulation ring 4 is 15mm on described electrode 3；
Electrode 3 and conducting ring 5 described in step 3 are screwed in together；
Electrode 3 and conducting ring 5 described in step 3 are screwed in together；
Electrode 3 and annular interior insulation ring 4 described in step 3 are screwed in together；
Shading ring 1 described in step 4 is screwed on the surface of annular interior insulation ring 4 and conducting ring 5
's.
Experiment one is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 80%, this embodiment party
Formula improves the scope of application of electron beam irradiation parts processed；
A diameter of 10cm is made using copper plate, thickness is 5mm circular reception target, using circular reception target to experiment one
The emission current uniformity of obtained annular carbon fiber negative electrode is tested, and test result is as shown in Figure 3；Fig. 3 is line column
Figure；As can be seen from Figure 3, the annular carbon fiber negative electrode that experiment one is obtained is at the diverse location of space, the line transmitting in ring-shaped emission source
Without very big difference.
The annular carbon fiber negative electrode obtained using experiment one has Al to surface spraying2O3The stainless steel bearing of coating carries out electricity
Beamlet is irradiated, as shown in Figure 4 and Figure 5；Fig. 4 is that surface spraying has Al2O3The SEM figures of the stainless steel bearing of coating；Fig. 5 is to use
The annular carbon fiber negative electrode that experiment one is obtained has Al to surface spraying2O3The stainless steel bearing of coating carries out electron beam irradiation 20 times
SEM figures afterwards；
It was found from Fig. 4 and Fig. 5, the annular carbon fiber negative electrode obtained using experiment one has Al to surface spraying2O3Coating is not
Rust steel shaft holds the original loose particles shape surface of coating surface after progress electron beam irradiation 20 times, is changed into uniform remelting surface
Pattern.
There is Al to surface spraying2O3The stainless steel bearing of coating and using the obtained annular carbon fiber negative electrode of experiment one to table
Face is coated with Al2O3The bearing that the stainless steel bearing of coating carries out after electron beam irradiation 20 times carries out wear testing；Using Si3N4
To abrading-ball, load 100g, rotating speed 300r/min, friction radius 2mm, preset time 5min, as shown in Figure 6 and Figure 7；Fig. 6 is table
Face is coated with Al2O3The SEM figures of the stainless steel bearing polishing scratch of coating；Fig. 7 is the annular carbon fiber negative electrode pair obtained using experiment one
Surface spraying has Al2O3The stainless steel bearing of coating carries out the SEM figures of the bearing after electron beam irradiation 20 times；From Fig. 6 and Fig. 7
As can be seen that the annular carbon fiber negative electrode obtained using experiment one has Al to surface spraying2O3The stainless steel bearing of coating carries out electricity
Beamlet irradiate 20 times after axle polishing scratch edge with the presence of many abrasive dusts, polishing scratch center subregion coating have comes off shows
As, most of zone-coating is combined intact with matrix, after electron beam irradiation is handled, the abrasion resistance properties of bearing are enhanced.
Claims (1)
1. a kind of preparation method of annular carbon fiber negative electrode, it is characterised in that what this method was specifically realized by the following steps：
First, use insulating materials to be drilled with through hole in uniform form, obtain annular interior insulation ring (4)；By electrode material with uniform
Form be drilled with through hole, obtain electrode (3)；
2nd, multi-strand carbon fiber silk is bundled into cylinder, then it is 10 to be immersed in P/Al atomic ratios:1st, mass fraction for 20% it is inclined
35s is infiltrated in aluminum phosphate solution, then is 500 DEG C in temperature and heats 60min, carbon fiber bundle (6) is obtained；
3rd, electrode (3) and conducting ring (5) are fixed together, then electrode (3) and annular interior insulation ring (4) are fixed together,
One end of carbon fiber bundle (6) is welded in the through hole of electrode (3) again, the other end of carbon fiber bundle (6) passes annular interior insulation
The through hole of ring (4)；
4th, shading ring (1) is fixed on the surface of annular interior insulation ring (4) and conducting ring (5), obtains annular carbon fiber cloudy
Pole；
Insulating materials described in step one is polytetrafluoroethylene (PTFE)；
Electrode material described in step one is red copper；
The material of conducting ring (5) described in step 3 is brass；
The material of shading ring (1) described in step 4 is nylon；
A diameter of 2mm of carbon fiber bundle (6) described in step 2；
The length that carbon fiber bundle (6) described in step 3 exposes the inner surface of annular interior insulation ring (4) is 2cm；
The centre-to-centre spacing of through hole is that the centre-to-centre spacing of through hole on 15mm, annular interior insulation ring (4) is on electrode (3) described in step 3
15mm；
Electrode (3) and conducting ring (5) described in step 3 are screwed in together；
Electrode (3) and annular interior insulation ring (4) described in step 3 are screwed in together；
Shading ring (1) described in step 4 is screwed on the surface of annular interior insulation ring (4) and conducting ring (5)
's；
Annular carbon fiber negative electrode described in step 4 can be carried out at uniform surface irradiation to the part with complex appearance
Reason, relative to traditional flat carbon-fiber cathode, the treatment effeciency of part improves 80%.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272699A (en) * | 1978-03-13 | 1981-06-09 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V | Electron impact ion source with field emission cathode |
| CN102436997A (en) * | 2011-12-02 | 2012-05-02 | 哈尔滨工业大学 | Carbon fiber cathode emitting large area uniform electron beams and preparation method thereof |
| CN102586749A (en) * | 2012-03-12 | 2012-07-18 | 王正安 | Multi-magnetic field magnetron sputtering cathode |
| CN103065906A (en) * | 2012-12-18 | 2013-04-24 | 中国人民解放军国防科学技术大学 | Preparation method for carbon fiber annular cathode |
-
2015
- 2015-06-25 CN CN201510357767.4A patent/CN104966655B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4272699A (en) * | 1978-03-13 | 1981-06-09 | Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V | Electron impact ion source with field emission cathode |
| CN102436997A (en) * | 2011-12-02 | 2012-05-02 | 哈尔滨工业大学 | Carbon fiber cathode emitting large area uniform electron beams and preparation method thereof |
| CN102586749A (en) * | 2012-03-12 | 2012-07-18 | 王正安 | Multi-magnetic field magnetron sputtering cathode |
| CN103065906A (en) * | 2012-12-18 | 2013-04-24 | 中国人民解放军国防科学技术大学 | Preparation method for carbon fiber annular cathode |
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