CN104966655A - Annular carbon fiber negative electrode and preparation method therefor - Google Patents
Annular carbon fiber negative electrode and preparation method therefor Download PDFInfo
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- CN104966655A CN104966655A CN201510357767.4A CN201510357767A CN104966655A CN 104966655 A CN104966655 A CN 104966655A CN 201510357767 A CN201510357767 A CN 201510357767A CN 104966655 A CN104966655 A CN 104966655A
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Abstract
The invention provides an annular carbon fiber negative electrode and preparation method therefor and relates to a negative electrode and a preparation method therefor. The purpose is to solve a problem that a present carbon fiber negative electrode is a plane-type negative electrode, and uniform irradiation modification processing of a complex workpiece surface cannot be carried out. The device comprises shielding rings, a screw hole, an electrode, an annular inner insulating ring, conducting rings and a carbon fiber bundle. The annular inner insulating ring is arranged inside the electrode. The conducting rings are arranged at the upper end and the lower end of the electrode. Shielding rings are arranged at the upper ends and the lower ends of the annular inner insulating ring and the conducting rings. One end of the carbon fiber bundle is welded in the through hole of the electrode. The other end of the carbon fiber bundle goes out through the through hole of the annular inner insulating ring. The preparation method is as follows: first, an annular inner insulating ring and an electrode are prepared; second, a carbon fiber bundle is prepared; third, an electrode and conducting rings are fixed, and the electrode and the annular inner insulating ring are fixed; fourth, the shielding rings are fixed on the surfaces of the annular inner insulating ring and the conducting rings. Through the preparation method, the annular carbon fiber negative electrode can be obtained.
Description
Technical field
The present invention relates to a kind of negative electrode and preparation method thereof.
Background technology
The advantages such as the transmitting threshold value that carbon fibre material has because of it is low, startup is fast, electron beam uniformity is good, the life-span is long are one of ideal materials of electronics occurring source.The negative electrode adopting carbon fibre material to prepare is widely used in the field such as microwave device, strong current electron beam irradiation.The carbon fibre material negative electrode of current use is plane form negative electrode, and the surface irradiation modified effect for flat work pieces is obvious, but for having the workpiece of complex appearance, as gear, bearing etc., cannot carry out uniform radiation modification process to surface of the work.
Summary of the invention
The object of the invention is to solve existing carbon-fiber cathode is plane form negative electrode, cannot carry out the problem of uniform radiation modification process, and provide a kind of annular carbon fiber negative electrode and preparation method thereof to complex part surface.
A kind of annular carbon fiber negative electrode comprises dead ring, conducting ring and carbon fiber bundle in shading ring, screw, electrode, annular;
The inside of described electrode is provided with dead ring in annular, and the two ends up and down of electrode are equipped with conducting ring; In annular, the two ends up and down of dead ring and conducting ring are equipped with shading ring;
Described shading ring is provided with screw, and shading ring, conducting ring and electrode are fixed by screw by screw;
Uniform several through hole on dead ring in described electrode and annular, and on electrode, through hole axial line overlaps with the axial line of through hole on dead ring in annular; 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 dead ring in annular.
A preparation method for annular carbon fiber negative electrode, completes according to the following steps:
One, adopt insulating material to be drilled with through hole with uniform form, obtain dead ring in annular; Electrode material is drilled with through hole with uniform form, obtains electrode;
Two, multi-strand carbon fiber silk is bundled into cylindrical, then is immersed in that P/Al atomic ratio is 10:1, mass fraction is infiltrate 35s ~ 40s in the aluminium metaphosphate solution of 20%, then be 500 DEG C of heating 60min ~ 70min in temperature, obtain carbon fiber bundle;
Three, electrode and conducting ring are fixed together, then are fixed together by dead ring in electrode and annular, then be welded in the through hole of electrode by one end of carbon fiber bundle, the other end of carbon fiber bundle passes the through hole of dead ring in annular;
Four, shading ring is fixed on the surface of dead ring and conducting ring in annular, obtains annular carbon fiber negative electrode.
Advantage of the present invention:
One, carbon fiber bundle is evenly arranged on loop configuration electrode by the present invention, utilizes the emission characteristic of carbon fiber bundle, forms equally distributed electronic beam current in space, can carry out uniform surface irradiation modification to the part with complex appearance;
Two, the present invention is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70% ~ 80%, invention increases the scope of application of electron beam irradiation parts processed;
Three, the annular carbon fiber negative electrode effects on surface using the present invention to obtain is coated with Al
2o
3the stainless steel bearing of coating carries out the original loose particles shape surface of coating surface after electron beam irradiation 20 times, changes uniform remelting surface topography into;
Four, after the annular carbon fiber negative electrode using the present invention to obtain carries out electron beam irradiation process to matrix, the abrasion resistance properties of matrix is enhanced.
The present invention can obtain a kind of annular carbon fiber negative electrode.
Accompanying drawing explanation
Fig. 1 is the vertical view of a kind of annular carbon fiber negative electrode described in embodiment one;
Fig. 2 is the cutaway view of Fig. 1 along A-A;
Fig. 3 is line block diagram;
Fig. 4 is that surface spraying has Al
2o
3the SEM figure of the stainless steel bearing of coating;
Fig. 5 is that the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out the SEM figure after electron beam irradiation 20 times;
Fig. 6 is that surface spraying has Al
2o
3the SEM figure of the stainless steel bearing polishing scratch of coating;
Fig. 7 is that the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out the SEM figure of the bearing after electron beam irradiation 20 times.
Embodiment
Embodiment one: present embodiment is that a kind of annular carbon fiber negative electrode comprises dead ring 4, conducting ring 5 and carbon fiber bundle 6 in shading ring 1, screw 2, electrode 3, annular;
The inside of described electrode 3 is provided with dead ring 4 in annular, and the two ends up and down of electrode 3 are equipped with conducting ring 5; In annular, the two ends up and down of dead ring 4 and conducting ring 5 are equipped with shading ring 1;
Described shading ring 1 is provided with screw 2, and shading ring 1, conducting ring 5 and electrode 3 are fixed by screw 2 by screw;
Uniform several through hole on dead ring 4 in described electrode 3 and annular, and on electrode 3, through hole axial line overlaps with the axial line of through hole on dead ring in annular 4; 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 dead ring 4 in annular.
Fig. 1 is the vertical view of a kind of annular carbon fiber negative electrode described in embodiment one;
Fig. 2 is the cutaway view of Fig. 1 along A-A; In Fig. 2,1 is shading ring, and 2 is screw, and 3 is electrode, and 4 is dead ring in annular, and 5 is conducting ring, and 6 is carbon fiber bundle.
The advantage of present embodiment:
One, carbon fiber bundle 6 is evenly arranged on loop configuration electrode 3 by present embodiment, utilizes the emission characteristic of carbon fiber bundle 6, forms equally distributed electronic beam current in space, can carry out uniform surface irradiation modification to the part with complex appearance;
Two, present embodiment is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70% ~ 80%, and present embodiment improves the scope of application of electron beam irradiation parts processed;
Three, the annular carbon fiber negative electrode effects on surface using present embodiment to obtain is coated with Al
2o
3the stainless steel bearing of coating carries out the original loose particles shape surface of coating surface after electron beam irradiation 20 times, changes uniform remelting surface topography into;
Four, after the annular carbon fiber negative electrode using present embodiment to obtain carries out electron beam irradiation process to matrix, the abrasion resistance properties of matrix is enhanced.
Present embodiment can obtain a kind of annular carbon fiber negative electrode.
Embodiment two: present embodiment with the difference specifically implementing is: on described electrode 3, the centre-to-centre spacing of through hole is 15mm, and in annular, on dead ring 4, the centre-to-centre spacing of through hole is 15mm.Other are identical with embodiment one.
Embodiment three: present embodiment with the difference specifically implementing one or two is: the length that described carbon fiber bundle 6 exposes the inner surface of dead ring 4 in annular is 2cm ~ 3cm.Other are identical with embodiment one or two.
Embodiment four: present embodiment with the difference specifically implementing one or two is: the material of described shading ring 1 is nylon; The material of described electrode 3 is red copper; In described annular, the material of dead ring 4 is polytetrafluoroethylene; The material of described 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 completes according to the following steps:
One, adopt insulating material to be drilled with through hole with uniform form, obtain dead ring 4 in annular; Electrode material is drilled with through hole with uniform form, obtains electrode 3;
Two, multi-strand carbon fiber silk is bundled into cylindrical, then is immersed in that P/Al atomic ratio is 10:1, mass fraction is infiltrate 35s ~ 40s in the aluminium metaphosphate solution of 20%, then be 500 DEG C of heating 60min ~ 70min in temperature, obtain carbon fiber bundle 6;
Three, electrode 3 and conducting ring 5 are fixed together, then are fixed together by dead ring 4 in electrode 3 and annular, then be welded on one end of carbon fiber bundle 6 in the through hole of electrode 3, the other end of carbon fiber bundle 6 passes the through hole of dead ring 4 in annular;
Four, shading ring 1 is fixed on the surface of dead ring 4 and conducting ring 5 in annular, obtains annular carbon fiber negative electrode.
The advantage of present embodiment:
One, carbon fiber bundle 6 is evenly arranged on loop configuration electrode 3 by present embodiment, utilizes the emission characteristic of carbon fiber bundle 6, forms equally distributed electronic beam current in space, can carry out uniform surface irradiation modification to the part with complex appearance;
Two, present embodiment is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 70% ~ 80%, and present embodiment improves the scope of application of electron beam irradiation parts processed;
Three, the annular carbon fiber negative electrode effects on surface using execution mode to obtain is coated with Al
2o
3the stainless steel bearing of coating carries out the original loose particles shape surface of coating surface after electron beam irradiation 20 times, changes uniform remelting surface topography into;
Four, after the annular carbon fiber negative electrode using present embodiment to obtain carries out electron beam irradiation process to matrix, the abrasion resistance properties of matrix is enhanced.
Present embodiment can obtain a kind of annular carbon fiber negative electrode.
Embodiment six: the difference of present embodiment and embodiment five is: the insulating material described in step one is polytetrafluoroethylene; Electrode material described in step one is red copper; The material of the conducting ring 5 described in step 3 is brass; The material of the 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: the diameter of the carbon fiber bundle described in step one is 2mm.Other are identical with embodiment five or six.
Embodiment eight: the difference of present embodiment and embodiment five to seven is: the length that the carbon fiber bundle 6 described in step 3 exposes the inner surface of dead ring 4 in annular is 2cm ~ 3cm.Other are identical with embodiment five to seven.
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 15mm, in annular, on dead ring 4, the centre-to-centre spacing of through hole is 15mm.
Other are identical with embodiment five to eight.
Embodiment ten: present embodiment with the difference of embodiment five to nine is: together with the electrode 3 described in step 3 is screwed in conducting ring 5; Together with electrode 3 described in step 3 is screwed in conducting ring 5; Together with electrode 3 described in step 3 is screwed in dead ring in annular 4; Shading ring 1 described in step 4 is screwed on the surface of dead ring 4 and conducting ring 5 in annular.Other are identical with embodiment five to nine.
Adopt following verification experimental verification beneficial effect of the present invention:
Test one: a kind of preparation method of annular carbon fiber negative electrode, completes according to the following steps:
One, adopt insulating material to be drilled with through hole with uniform form, obtain dead ring 4 in annular; Electrode material is drilled with through hole with uniform form, obtains electrode 3;
Two, multi-strand carbon fiber silk is bundled into cylindrical, then is immersed in that P/Al atomic ratio is 10:1, mass fraction is infiltrate 35s in the aluminium metaphosphate solution of 20%, then be 500 DEG C of heating 60min in temperature, obtain carbon fiber bundle 6;
Three, electrode 3 and conducting ring 5 are fixed together, then are fixed together by dead ring 4 in electrode 3 and annular, then be welded on one end of carbon fiber bundle 6 in the through hole of electrode 3, the other end of carbon fiber bundle 6 passes the through hole of dead ring 4 in annular;
Four, shading ring 1 is fixed on the surface of dead ring 4 and conducting ring 5 in annular, obtains annular carbon fiber negative electrode;
Insulating material described in step one is polytetrafluoroethylene;
Electrode material described in step one is red copper;
The material of the conducting ring 5 described in step 3 is brass;
The material of the shading ring 1 described in step 4 is nylon;
The diameter of the carbon fiber bundle described in step one is 2mm;
The length that carbon fiber bundle 6 described in step 3 exposes the inner surface of dead ring 4 in annular is 2cm;
On described electrode 3, the centre-to-centre spacing of through hole is 15mm, and in annular, on dead ring 4, the centre-to-centre spacing of through hole is 15mm;
Together with electrode 3 described in step 3 is screwed in conducting ring 5;
Together with electrode 3 described in step 3 is screwed in conducting ring 5;
Together with electrode 3 described in step 3 is screwed in dead ring in annular 4;
Shading ring 1 described in step 4 is screwed on the surface of dead ring 4 and conducting ring 5 in annular.
Test one is relative to traditional flat carbon-fiber cathode, and the treatment effeciency of part improves 80%, and present embodiment improves the scope of application of electron beam irradiation parts processed;
Use copper plate to make diameter for 10cm, thickness is the circular reception target of 5mm, and use the emission current uniformity of circular reception target to the annular carbon fiber negative electrode that test one obtains to test, test result as shown in Figure 3; Fig. 3 is line block diagram; As can be seen from Figure 3, the annular carbon fiber negative electrode that test one obtains is at diverse location place, space, and the line in ring-shaped emission source launches not very big-difference.
The annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out electron beam irradiation, as shown in Figure 4 and Figure 5; Fig. 4 is that surface spraying has Al
2o
3the SEM figure of the stainless steel bearing of coating; Fig. 5 is that the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out the SEM figure after electron beam irradiation 20 times;
From Fig. 4 and Fig. 5, the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out the original loose particles shape surface of coating surface after electron beam irradiation 20 times, changes uniform remelting surface topography into.
Effects on surface is coated with Al
2o
3the annular carbon fiber negative electrode effects on surface that the stainless steel bearing of coating and service test one obtain is coated with Al
2o
3bearing after the stainless steel bearing of coating carries out electron beam irradiation 20 times carries out wear testing; Adopt Si
3n
4to 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 that surface spraying has Al
2o
3the SEM figure of the stainless steel bearing polishing scratch of coating; Fig. 7 is that the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the stainless steel bearing of coating carries out the SEM figure of the bearing after electron beam irradiation 20 times; As can be seen from Fig. 6 and Fig. 7, the annular carbon fiber negative electrode effects on surface that service test one obtains is coated with Al
2o
3the polishing scratch edge of the axle after the stainless steel bearing of coating carries out electron beam irradiation 20 times has a lot of abrasive dust to exist, subregion, polishing scratch center coating has obscission, major part zone-coating in conjunction with intact, after electron beam irradiation process, enhances the abrasion resistance properties of bearing with matrix.
Claims (10)
1. an annular carbon fiber negative electrode, is characterized in that a kind of annular carbon fiber negative electrode comprises dead ring (4), conducting ring (5) and carbon fiber bundle (6) in shading ring (1), screw (2), electrode (3), annular;
The inside of described electrode (3) is provided with dead ring (4) in annular, and the two ends up and down of electrode (3) are equipped with conducting ring (5); In annular, the two ends up and down of dead ring (4) and conducting ring (5) are equipped with shading ring (1);
Described shading ring (1) is provided with screw (2), and screw is fixing by shading ring (1), conducting ring (5) and electrode (3) by screw (2);
The upper uniform several through hole of dead ring (4) in described electrode (3) and annular, and the upper through hole axial line of electrode (3) overlaps with the axial line that dead ring in annular (4) goes up through hole; 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 dead ring (4) in annular.
2. a kind of annular carbon fiber negative electrode according to claim 1, it is characterized in that the centre-to-centre spacing of the upper through hole of described electrode (3) is 15mm, in annular, the centre-to-centre spacing of the upper through hole of dead ring (4) is 15mm.
3. a kind of annular carbon fiber negative electrode according to claim 1, is characterized in that the length of inner surface that described carbon fiber bundle (6) exposes dead ring (4) in annular is 2cm ~ 3cm.
4. a kind of annular carbon fiber negative electrode according to claim 1, is characterized in that the material of described shading ring (1) is nylon; The material of described electrode (3) is red copper; In described annular, the material of dead ring (4) is polytetrafluoroethylene; The material of described conducting ring (5) is brass.
5. a preparation method for annular carbon fiber negative electrode, is characterized in that a kind of preparation method of annular carbon fiber negative electrode completes according to the following steps:
One, adopt insulating material to be drilled with through hole with uniform form, obtain dead ring (4) in annular; Electrode material is drilled with through hole with uniform form, obtains electrode (3);
Two, multi-strand carbon fiber silk is bundled into cylindrical, then is immersed in that P/Al atomic ratio is 10:1, mass fraction is infiltrate 35s ~ 40s in the aluminium metaphosphate solution of 20%, then be 500 DEG C of heating 60min ~ 70min in temperature, obtain carbon fiber bundle (6);
Three, electrode (3) and conducting ring (5) are fixed together, again dead ring (4) in electrode (3) and annular is fixed together, be welded in the through hole of electrode (3) by one end of carbon fiber bundle (6) again, the other end of carbon fiber bundle (6) passes the through hole of dead ring (4) in annular;
Four, shading ring (1) is fixed on the surface of dead ring (4) and conducting ring (5) in annular, obtains annular carbon fiber negative electrode.
6. the preparation method of a kind of annular carbon fiber negative electrode according to claim 5, is characterized in that the insulating material described in step one is polytetrafluoroethylene; Electrode material described in step one is red copper; The material of the conducting ring (5) described in step 3 is brass; The material of the shading ring (1) described in step 4 is nylon.
7. the preparation method of a kind of annular carbon fiber negative electrode according to claim 5, is characterized in that the diameter of the carbon fiber bundle described in step one is 2mm.
8. the preparation method of a kind of annular carbon fiber negative electrode according to claim 5, is characterized in that the length of inner surface that the carbon fiber bundle (6) described in step 3 exposes dead ring (4) in annular is 2cm ~ 3cm.
9. the preparation method of a kind of annular carbon fiber negative electrode according to claim 5, it is characterized in that the centre-to-centre spacing of the upper through hole of described electrode (3) is 15mm, in annular, the centre-to-centre spacing of the upper through hole of dead ring (4) is 15mm.
10. the preparation method of a kind of annular carbon fiber negative electrode according to claim 5, is characterized in that the electrode (3) described in step 3 and conducting ring (5) are screwed in together; Electrode (3) described in step 3 and conducting ring (5) are screwed in together; In electrode (3) described in step 3 and annular, dead ring (4) is screwed in together; Shading ring (1) described in step 4 is screwed on the surface of dead ring (4) and conducting ring (5) in annular.
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| CN201510357767.4A CN104966655B (en) | 2015-06-25 | 2015-06-25 | A kind of annular carbon fiber negative electrode and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899260A (en) * | 2018-06-19 | 2018-11-27 | 大连理工大学 | A kind of preparation method of the unordered carbon-fiber cathode of mixing for launching electronics beam |
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| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108899260A (en) * | 2018-06-19 | 2018-11-27 | 大连理工大学 | A kind of preparation method of the unordered carbon-fiber cathode of mixing for launching electronics beam |
| CN108899260B (en) * | 2018-06-19 | 2020-01-17 | 大连理工大学 | Preparation method of mixed disordered carbon fiber cathode for emitting electron beams |
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