CN201877390U - Brazing structure of oxygen-free copper and ceramic - Google Patents
Brazing structure of oxygen-free copper and ceramic Download PDFInfo
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- CN201877390U CN201877390U CN2010205943521U CN201020594352U CN201877390U CN 201877390 U CN201877390 U CN 201877390U CN 2010205943521 U CN2010205943521 U CN 2010205943521U CN 201020594352 U CN201020594352 U CN 201020594352U CN 201877390 U CN201877390 U CN 201877390U
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Abstract
The utility model discloses a brazing structure of oxygen-free copper and ceramic, comprising a collector inner core which is separated into a plurality of core clacks by straight flutes; the insulating ceramic is sheathed outside the collector inner core; and the outer surface of the collector inner core is integrated with the inner surface of the insulating ceramic into a whole by brazing. The brazing structure of the oxygen-free copper and the ceramic is good in reliability and heat dissipation property.
Description
Technical field
The utility model relates to microwave electrovacuum field, and especially travelling wave tube energy recovery component collector field is specially a kind of oxygen-free copper and the ceramic braze-welded structure that are applied to the travelling wave tube collector.
Background technology
The main effect of travelling wave tube collector is to collect the beam current that passes through after slow wave system is finished the energy exchange effect.When the electric current of collecting is got to collector, become heat energy loss and fallen.Generally, just should reduce the energy loss of this part in order to improve TWT efficiency.The energy of consumption on collector is relevant with the current potential of collector.If the collector current potential is lower than the current potential of slow wave system, decelerating field has then just appearred between slow wave system and the collector, the collector current potential is low more, decelerating field is strong more, deceleration suffered when electronics leaves slow wave system and enters collector is big more, and the speed that electronics is stamped collector is more little, and the energy that consumes on collector is also more little, simultaneously, can also reduce requirement to cooling system.
The characteristics of collector need collector that absolute electrode individual and the slow wave insulation is arranged, and also need certain heat-sinking capability simultaneously.General collector is made up of inner core and shell, and middle usefulness has the ceramic support of electric insulation and good thermal conductivity, satisfy certain electrical property and certain thermal conductivity.The inner core of collector is used oxygenless copper material always, is beneficial to heat radiation and reclaims electronics; Aluminium oxide 95 porcelain that pottery is commonly used adopt better beryllium oxide 99 porcelain of heat dispersion sometimes.Oxygen-free copper and pottery ask that normal employing pressure is connected is fixed together both, the best method of attachment of dispelling the heat is that both are welded on one, but oxygen-free copper is different with the coefficient of expansion of aluminium oxide (beryllium oxide) pottery, and the firm welding difference is unfavorable for heat radiation so on the contrary.
The utility model content
The purpose of this utility model provides the braze-welded structure of a kind of oxygen-free copper and pottery, with the problem that is unfavorable for after solving oxygen-free copper collector inner core of the prior art and insulating ceramics causing welding owing to the coefficient of expansion is different dispelling the heat.
In order to achieve the above object, the technical scheme that the utility model adopted is:
The braze-welded structure of a kind of oxygen-free copper and pottery, include cylindric collector inner core, from the circumference of collector inner core have a plurality of on collector inner core circumference equally distributed straight trough, straight trough is divided into the collector inner core and is a plurality of core lobes, and the root of straight trough guarantees that the collector inner core is discontinuous on diametric(al), also include cylindric insulating ceramics, insulating ceramics is enclosed within outside the collector inner core, and the outer surface of collector inner core, insulating ceramics inner surface are one by the solder sheet soldering.The external diameter of collector inner core and the internal diameter of insulating ceramics are complementary, have eight straight troughs on the collector inner core circumference, it is eight core lobes that straight trough is divided into the collector inner core, and the collector inner core carries out annealing in process in hydrogen furnace, the core lobe annealing in process after-tack of collector inner core.Insulating ceramics two ends outer wall forms step respectively, and the inside and outside surface of insulating ceramics all is coated with metal level, and the insulating ceramics step surface is not coated with metal layer.
Advantage of the present utility model is:
1, high-temperature soldering, Welding Structure is firm, good reliability.
2, Welding Structure make the collector inner core of oxygen-free copper contact with insulating ceramics good, thermal diffusivity is good.
3, can satisfy the welding of different coefficient of expansion materials.
Description of drawings
Fig. 1 is the utility model structure side view.
Fig. 2 is the utility model structure front view.
Embodiment
As shown in Figure 1.The braze-welded structure of a kind of oxygen-free copper and pottery, include cylindric collector inner core 1, from the circumference of collector inner core 1 have a plurality of on collector inner core 1 circumference equally distributed straight trough 4, straight trough 4 is divided into collector inner core 1 and is a plurality of core lobes 5, and the root of straight trough 4 guarantees that collector inner core 1 is discontinuous on diametric(al), also include cylindric insulating ceramics 2, insulating ceramics 2 is enclosed within outside the collector inner core 1, and the outer surface of collector inner core 1, insulating ceramics 2 inner surfaces are one by solder sheet 3 solderings.
Collector inner core 1 adopts oxygenless copper material, and insulating ceramics 2 adopts aluminium oxide 95 ceramic materials, and solder sheet 3 adopts silver-bearing copper 28 scolders.The internal diameter of the external diameter of collector inner core 1 and insulating ceramics 2 is complementary, have eight straight troughs on collector inner core 1 circumference, it is eight core lobes that straight trough is divided into collector inner core 1, the evenly distribution on collector inner core 1 circumference of core lobe, and the core lobe is divided into two sections at collector inner core 1 axial direction.Collector inner core 1 carries out annealing in process in hydrogen furnace, the core lobe 5 annealing in process after-tacks of collector inner core 1.Insulating ceramics 2 two ends outer walls form step respectively, and insulating ceramics 2 inside and outside surfaces all are coated with metal level, and the insulating ceramics step surface is not coated with metal layer.
The utility model utilizes the petal-shaped external diameter of oxygen-free copper collector inner core and insulating ceramics internal diameter to match, the annealed processing of oxygen-free copper collector inner core, and collector inner core outsourcing solder sheet is put in the insulating ceramics endoporus, handles through soldering, and is integrally welded.The electrical insulating property of insulating ceramics own can satisfy high voltage withstanding requirement, simultaneously the heat radiation that the structure of integral solder can be good.
The concrete making step of the utility model is as follows:
1, makes the collector inner core of oxygen-free copper, the internal diameter of collector inner core is by the collector inner core size decision of computed in software, the internal diameter of the external diameter coordinated insulation pottery of collector inner core, 8 core lobes on the external diameter circumferencial direction, have been processed, the uniform distribution of one-tenth on circumference of core lobe, the root of core lobe guarantees that inner core is discontinuous on diametric(al).Lobe is divided into 2 sections at axial direction, and every section length is 10mm.
2, carry out annealing in process after the machine-shaping of collector inner core in hydrogen furnace, the core lobe can deliquescing, can adjust the spacing of core lobe and come the local external diameter that changes the collector inner core.
3, customized insulating ceramics, insulating ceramic materials are aluminium oxide 95 porcelain, and length is 28.5mm, and external diameter is Φ 23mm, and internal diameter is Φ 15mm, and respectively there is a step at the two ends of pottery, and shoulder height is 4.5mm.Pottery surfaces externally and internally fineness reaches
Requirement, on inside and outside surface metal layer is arranged, the step place does not have metal layer.
4, solder sheet is encased the collector inner core put in the insulating ceramics, the solder sheet material is silver-bearing copper 28 scolders, and specification is thickness 0.05mm; Put into the straight trough of collector inner core core lobe with anchor clamps, make the core lobe of collector inner core be adjacent to the inner surface of insulating ceramics.
5, assembly is fixed in the anchor clamps, puts into the hydrogen stove, weld according to the welding curve of silver-bearing copper 28 scolders, the warming and cooling rate of welding must not be greater than 10 ℃/min.
6, welding finishes, and takes out assembly, takes off anchor clamps, carries out the inspection of welding quality.
The utility model is applied in the collector of Ku wave band 150W CW TWT, also may be used in the following travelling wave tube of collector dissipation power 800W.
Claims (5)
1. the braze-welded structure of oxygen-free copper and pottery, it is characterized in that: include cylindric collector inner core, from the circumference of described collector inner core have a plurality of on collector inner core circumference equally distributed straight trough, described straight trough is divided into the collector inner core and is a plurality of core lobes, and the root of straight trough guarantees that the collector inner core is discontinuous on diametric(al), also include cylindric insulating ceramics, described insulating ceramics is enclosed within outside the collector inner core, and the outer surface of collector inner core, insulating ceramics inner surface are one by the solder sheet soldering.
2. the braze-welded structure of a kind of oxygen-free copper according to claim 1 and pottery is characterized in that, described collector inner core adopts oxygenless copper material, and insulating ceramics adopts aluminium oxide 95 ceramic materials, and solder sheet adopts silver-bearing copper 28 scolders.
3. the braze-welded structure of a kind of oxygen-free copper according to claim 1 and pottery, it is characterized in that, the external diameter of described collector inner core and the internal diameter of insulating ceramics are complementary, have eight straight troughs on the collector inner core circumference, it is eight core lobes that described straight trough is divided into the collector inner core, on collector inner core circumference, evenly distributing of described core lobe, and described core lobe is divided into two sections at collector inner core axial direction.
4. the braze-welded structure that is used for a kind of oxygen-free copper and pottery according to claim 1 is characterized in that described collector inner core carries out annealing in process in hydrogen furnace, the core lobe annealing in process after-tack of collector inner core.
5. the braze-welded structure that is used for a kind of oxygen-free copper and pottery according to claim 1 is characterized in that described insulating ceramics two ends outer wall forms step respectively, and the inside and outside surface of insulating ceramics all is coated with metal level, and the insulating ceramics step surface is not coated with metal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205943521U CN201877390U (en) | 2010-11-03 | 2010-11-03 | Brazing structure of oxygen-free copper and ceramic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205943521U CN201877390U (en) | 2010-11-03 | 2010-11-03 | Brazing structure of oxygen-free copper and ceramic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877390U true CN201877390U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205943521U Expired - Fee Related CN201877390U (en) | 2010-11-03 | 2010-11-03 | Brazing structure of oxygen-free copper and ceramic |
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| CN (1) | CN201877390U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810443A (en) * | 2012-08-09 | 2012-12-05 | 安徽华东光电技术研究所 | Space travelling wave tube collector component and assembly method thereof |
| CN105060916A (en) * | 2015-08-12 | 2015-11-18 | 安徽华东光电技术研究所 | Brazing method for water load isolating square ceramic chip |
| CN105728971A (en) * | 2016-03-03 | 2016-07-06 | 中国振华集团云科电子有限公司 | Soldering process for collector tube blank |
-
2010
- 2010-11-03 CN CN2010205943521U patent/CN201877390U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810443A (en) * | 2012-08-09 | 2012-12-05 | 安徽华东光电技术研究所 | Space travelling wave tube collector component and assembly method thereof |
| CN105060916A (en) * | 2015-08-12 | 2015-11-18 | 安徽华东光电技术研究所 | Brazing method for water load isolating square ceramic chip |
| CN105728971A (en) * | 2016-03-03 | 2016-07-06 | 中国振华集团云科电子有限公司 | Soldering process for collector tube blank |
| CN105728971B (en) * | 2016-03-03 | 2018-02-23 | 中国振华集团云科电子有限公司 | A kind of welding procedure of collector cylinder blank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20121103 |