CN109623061A - A kind of anode braze-welded structure - Google Patents
A kind of anode braze-welded structure Download PDFInfo
- Publication number
- CN109623061A CN109623061A CN201811639574.8A CN201811639574A CN109623061A CN 109623061 A CN109623061 A CN 109623061A CN 201811639574 A CN201811639574 A CN 201811639574A CN 109623061 A CN109623061 A CN 109623061A
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- CN
- China
- Prior art keywords
- anode
- braze
- welded structure
- positioning step
- extension
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K1/00—Soldering, e.g. brazing, or unsoldering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The present invention provides a kind of anode braze-welded structure, includes anode cap and casting target, and the casting target body part passes through the flat airtight combination of envelope of soldering close to the end face of extension and the first positioning step of the anode cap；Outer wall of the casting target body part near the end of extension and the anode cap inner wall near the first positioning step of anode cap outer are formed with the gap rounded.In the anode braze-welded structure, brazing surface and solder will not be all directly exposed in vacuum chamber；In subsequent high-temperature baking, the solder at welding surface can diffuse to the gap being connected with welding surface first after evaporation, will not reach vacuum chamber, and area of evapotranspiring will not be formed on glass bulb, ensure that the insulation performance and pressure-resistant performance of glass bulb.In addition, anode braze-welded structure assembly provided by the invention consolidates, is conducive to the progress vacuumized, and service safety and service life are secure.
Description
The present invention relates to vacuum device technical fields, more particularly, to a kind of anode braze-welded structure.
Background technique
Electron tube is to be connected to become complicated component by welding method by multiple material, due to electrovacuum device
Part job requirement maintains high vacuum for a long time, and the soldering of device usually carries out in hydrogen furnace in addition, wants to various cored solders and device
Ask higher.
In actual application, the material of anode cap and casting target is oxygen-free copper to anode braze-welded structure with glass bulb,
Fusing point is 1083 DEG C, and for the softening point of glass at 800 DEG C or so, the subsequent processing baking temperature of anode is 650 DEG C.To ensure to weld
Success at least 60 DEG C lower than the fusing point of brazing metal or so of the fusing point of cored solder, is at least dried than device when selecting cored solder
Roasting high 100 DEG C or so of temperature, but again not above the fusing point of glass, therefore suitable cored solder melting range is very narrow.
Therefore, avoid solder that evaporation occurs in high-temperature baking while increasing cost by selecting more dystectic solder, effect
Fruit is also extremely limited.
In the prior art, anode cap and casting target are assembled together with lap joint form, solder ring are put on contact surface, using flat
Envelope mode is welded, and after workpiece is heated to a little higher than solder melt point temperature with solder, solder melts, and anode cap and casting target will not
Fusing, and fit clearance is inhaled into and is full of by capillarity, liquid solder is molten with anode cap and casting target phase counterdiffusion respectively
Solution forms soldered fitting after condensation, and liquid solder easily diffuses to anode cap and casting target surface by contact surface.In addition, in device
When part subsequent technique (as being vented) carries out high-temperature baking, with the raising of vacuum degree, solder can evaporating temperature reduction；And with temperature
The saturated vapour pressure of the raising of degree, solder increases, and has more solders and is evaporated out.In the prior art, weld seam is directly sudden and violent
It is exposed in the vacuum chamber in glass bulb, is directly evaporated, deposited on nigh glass bulb outward by weld seam after heated, form annular and evapotranspire
Area, so that the insulation performance of glass bulb and pressure-resistant degradation.
Accordingly, it is desirable to provide a kind of anode braze-welded structure for being able to solve the above problem.
Summary of the invention
The purpose of the present invention is to provide a kind of new anode braze-welded structures, adopt the technical scheme that
A kind of anode braze-welded structure, comprising:
Anode cap, one end of the anode cap are formed with the first positioning step being recessed inwardly；
Cast target, the extension that the casting target includes body part and extended by body part；Wherein
The body part is close to the end face of extension and first positioning step by being brazed the flat airtight combination of envelope mode；
In outer wall of the body part near the end of extension and the anode cap near the first positioning step outer
Wall is formed with the gap rounded.
Preferably, the gap in axial direction on development length be 1-5mm.
Preferably, locating gap radially on width be 0.05-0.2mm.
Preferably, the anode braze-welded structure further includes having metal cover and glass bulb；One end of the metal cover and glass bulb heat
Seal airtight combination.
Preferably, the body part is formed with the second positioning step far from one end outer wall of extension.
Preferably, the one end of the metal cover far from glass bulb and the second positioning step are by being brazed the flat airtight knot of envelope mode
It closes.
Preferably, the material of the metal cover is that can cut down metal.
Preferably, first positioning step surface is circumferentially formed with solder bath.
Preferably, the solder bath forms multiple concentric circles.
Preferably, the anode cap inner wall surface near first positioning step outer is formed with cricoid solder bath.
Beneficial effects of the present invention are as follows:
The present invention provides a kind of anode braze-welded structure, and wherein the welding surface outer of anode cap and casting target is not directly exposed to very
In cavity, and the gap assembled after welding surface has been formed about for solder evaporation.In brazing process, when being placed on welding surface
Solder fusing after, when being diffused under capillary action, will not directly diffuse to anode cap or cast target outer surface, welding
Face and solder will not be all directly exposed in vacuum chamber；When carrying out high-temperature baking in the subsequent process, due to being contacted with vacuum chamber
Workpiece surface there is no solder, and the solder at welding surface can diffuse to the gap being connected with welding surface first after evaporation,
Therefore solder will not reach vacuum chamber, area of evapotranspiring will not be formed on glass bulb, and then ensure that the insulation performance and pressure resistance of glass bulb
Performance improves the service safety and service life of the anode braze-welded structure with glass bulb.
On the other hand, Anodic cover of the present invention and casting target are in assembling process, and there are three contact surfaces for tool, and contact surface is big, and
The extension of casting target is inserted in the accommodating chamber of anode cap, and to be nested, therefore the assembly of anode cap and casting target is very firm；And
In assembling process, three contact surfaces are interconnected, but not will form air cavity, are conducive to the progress of vacuum.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows anode braze-welded structure schematic diagram provided by the invention.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It should also be noted that unless specifically stated otherwise, otherwise existing
Component described in these embodiments and the positioned opposite of step, numerical expression and numerical value do not limit the scope of the invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
By flat envelope mode Welding, weld seam is located at anode cap and casts the seam of target for anode cap and casting target in the prior art
Place, is directly exposed in vacuum chamber.In welding process, liquid solder easily faces out diffusion by contact, is attached to anode after condensation
The surface of cover and casting target.When subsequent technique carries out high-temperature baking, with the raising of vacuum degree in temperature and vacuum chamber, anode cap
Vacuum chamber is directly evaporated into the solder in the solder and weld seam on casting target surface, and then deposits the glass relatively low to temperature
On shell, annular is formed on glass bulb and is evapotranspired area, leverage the insulation performance and pressure-resistant performance of glass bulb.
The present invention provides a kind of anode braze-welded structure, as shown in Figure 1, the braze-welded structure includes:
Anode cap 1, one end of the anode cap 1 are formed with the first positioning step 11 being recessed inwardly；
Cast target 2, the extension 22 that the casting target 2 includes body part 21 and extended by body part 21；Wherein
The body part 21 is close to the end face of extension 22 and first positioning step 11 by being brazed flat envelope mode gas
Close combination；
Sun of the body part 21 near 11 outer of outer wall and the first positioning step near the end of extension 22
It covers 1 inner wall and is formed with the gap 3 rounded in pole.
It should be noted that the anode cap 1 includes the accommodating chamber axially extended, 2 body part 21 of casting target is close to prolonging
When the end face of extending portion 22 and first positioning step 11 are by being brazed the airtight combination of flat envelope mode, the extension 22 is inserted into sun
The accommodating chamber of pole cover 1, outer wall of the body part 21 near 22 end of extension have then been inserted in outside the first positioning step 11
Along neighbouring 1 inner wall of anode cap.It is to surround sun since the first positioning step 11 is to be recessed inwardly to be formed by 1 one end of anode cap
Pole is covered 1 inner wall one week, and outer is along the line do not extend to 1 outer wall of anode cap, when its with body part 21 close to extension 22
The flat airtight combination of envelope of end face soldering after, the outer of welding surface is not directly exposed to vacuum chamber, i.e., can not be outside anode cap 1
See weld seam in portion.What is be connected with the first 11 outers of positioning step, that is, welding surface outer is then the body part 21 close to extension
The gap 3 rounded that 1 inner wall of anode cap near 11 outer of outer wall and the first positioning step near 22 end is formed,
The extending direction in gap 3 is vertical with welding surface.
1 first positioning step 11 of anode cap provided by the invention is formed with casting 2 body part 21 of target close to 22 end face of extension
Welding surface be not directly exposed in vacuum chamber, after the solder fusing placed on welding surface, expanded under capillary action
When dissipating, it will not directly diffuse to anode cap 1 or cast the outer surface of target 2, solder will not be directly exposed in vacuum chamber.In device
In subsequent technique, when carrying out high-temperature baking, due to the raising of vacuum degree and temperature, solder can be evaporated and leave welding surface.At this
In invention, since solder is not directly exposed in vacuum chamber, solder will not be evaporated to vacuum chamber after leaving welding surface, and
It is to diffuse to the gap 3 being connected with welding surface.Therefore, in the present invention, solder will not directly reach vacuum chamber because of evaporation,
And then will not be deposited on glass bulb 5, annular area of evapotranspiring is not had and is formed, and effectively prevents solder to the insulating properties of glass bulb 5 and resistance to
Adverse effect caused by pressure property, and then improve the service safety and service life of the anode braze-welded structure with glass bulb 5.
On the other hand, Anodic cover 1 of the present invention and casting target 2 are in assembling process, and there are three contact surfaces for tool, and contact surface is big,
And the extension 22 for casting target 2 is inserted in the accommodating chamber of anode cap 1, to be nested, therefore the assembly of anode cap 1 and casting target 2 is non-
It is often firm.In assembling process, three contact surfaces are interconnected, but not will form air cavity, be conducive to vacuum into
Row.
In a preferred embodiment, the gap 3 in axial direction on development length be 1-5mm, radially
On width be 0.05-0.2mm.This 3 size of gap, will not be to two while the solder for evaporation provides and is large enough to hold chamber
The stability of person's assembly has an impact, and easy to accomplish in technique.
Further, for example, the gap 3 in axial direction on development length can also be but be not limited to 1.2-
4.5mm, 1.4-4mm, 1.6-3.5mm, 1.8mm-3mm or 2-2.5mm etc.；Width on radially be 0.05-0.2mm also
It can be but be not limited to 0.06-0.18mm, 0.07-0.16mm, 0.08-0.14mm, 0.09mm-0.12mm or 0.1-0.11mm
Deng.
In a particular embodiment, the anode braze-welded structure further includes having metal cover 4 and glass bulb 5；The metal cover 4
One end and glass bulb 5 seal airtight combination, the other end passes through the second positioning step 211 and the flat airtight combination of envelope of the casting soldering of target 2, institute
It states the second positioning step 211 and body part 21 is set far from one end outer wall of extension 22.In a preferred embodiment, institute
The material for stating metal cover 4 is that can cut down metal.This is because metal can be cut down from room temperature to the temperature for being lower than the Annealing Temperature of Glass upper limit
In range, there is the thermal expansion coefficient close with glass, can be used as the transition metal that glass is connect with metal.
In a preferred embodiment, 11 surface of the first positioning step is circumferentially formed with solder bath, more electedly, described
Solder bath forms multiple concentric circles.During brazing process or device subsequent technique carry out high-temperature baking, the first positioning table
Solder on 11 surface of rank can be molten into liquid, be flowed under capillary action, and solder bath then can be the flowing of solder
Drainage trough is provided, prevents solder from crossing the outer side of the first positioning step 11.The shape of solder bath can be rectangle, can also be with
It is arc-shaped, multiple concentric circles, the invention is not limited in this regard can also be formed.
In addition, the solder evaporated in order to prevent flows directly to sun along 3 axial direction of gap by the first positioning table outer
Pole cover 1 or casting 2 surface of target in a preferred embodiment can be in 1 inner walls of anode cap near 11 outer of the first positioning step
Surface forms cricoid solder bath, guides the flow direction of solder, further ensures that solder will not be evaporated to 5 inner wall of glass bulb, keeps glass
The pressure-resistant performance and insulation performance of shell 5.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (10)
1. a kind of anode braze-welded structure characterized by comprising
Anode cap, one end of the anode cap, which is recessed inwardly, is formed with the first positioning step；
Cast target, the extension that the casting target includes body part and extended by body part；Wherein
The body part is close to the end face of extension and first positioning step by being brazed the flat airtight combination of envelope mode；
Outer wall of the body part near the end of extension and the anode cap inner wall shape near the first positioning step outer
At there is the gap rounded.
2. anode braze-welded structure according to claim 1, which is characterized in that the gap in axial direction on extension it is long
Degree is 1-5mm.
3. anode braze-welded structure according to claim 2, which is characterized in that the gap radially on width be
0.05-0.2mm。
4. anode braze-welded structure according to claim 1, which is characterized in that the anode braze-welded structure further includes having metal cover
And glass bulb；One end of the metal cover and glass bulb seal airtight combination.
5. anode braze-welded structure according to claim 4, which is characterized in that one end outer wall of the body part far from extension
It is formed with the second positioning step.
6. anode braze-welded structure according to claim 5, which is characterized in that the one end of the metal cover far from glass bulb and second
Positioning step is by being brazed the flat airtight combination of envelope mode.
7. according to any one of the claim 4-6 anode braze-welded structure, which is characterized in that the material of the metal cover is that can cut down
Metal.
8. anode braze-welded structure according to claim 1, which is characterized in that first positioning step surface is circumferentially formed
There is solder bath.
9. anode braze-welded structure according to claim 8, which is characterized in that the solder bath forms multiple concentric circles.
10. anode braze-welded structure according to claim 1, which is characterized in that the sun near first positioning step outer
Pole cover inner wall surface is formed with cricoid solder bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639574.8A CN109623061B (en) | 2018-12-29 | 2018-12-29 | Anode brazing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639574.8A CN109623061B (en) | 2018-12-29 | 2018-12-29 | Anode brazing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109623061A true CN109623061A (en) | 2019-04-16 |
| CN109623061B CN109623061B (en) | 2021-07-06 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639574.8A Active CN109623061B (en) | 2018-12-29 | 2018-12-29 | Anode brazing structure |
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| CN (1) | CN109623061B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334584A (en) * | 2021-12-10 | 2022-04-12 | 上海科颐维电子科技有限公司 | Be used for X-ray tube anode welding device |
| CN114334584B (en) * | 2021-12-10 | 2024-05-24 | 上海科颐维电子科技有限公司 | Be used for X-ray tube positive pole welding set |
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| US5178316A (en) * | 1992-02-07 | 1993-01-12 | General Electric Company | Brazed X-ray tube anode |
| JPH11149891A (en) * | 1997-11-13 | 1999-06-02 | Hitachi Medical Corp | Fixed anode x-ray tube apparatus |
| US6829329B1 (en) * | 2002-01-17 | 2004-12-07 | Varian Medical Systems Technologies, Inc. | Target for a stationary anode in an x-ray tube |
| CN201720340U (en) * | 2010-07-19 | 2011-01-26 | 杭州凯龙医疗器械有限公司 | X-ray anode cap forming die device |
| US20170076903A1 (en) * | 2015-09-14 | 2017-03-16 | Michael Turner | X-ray tube |
| CN108109893A (en) * | 2018-02-05 | 2018-06-01 | 公安部第研究所 | One kind can cut down stem grid-controlled X-ray tube |
| CN108321071A (en) * | 2018-02-05 | 2018-07-24 | 公安部第研究所 | A kind of hollow structure X-ray tube |
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2018
- 2018-12-29 CN CN201811639574.8A patent/CN109623061B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| US5178316A (en) * | 1992-02-07 | 1993-01-12 | General Electric Company | Brazed X-ray tube anode |
| JPH11149891A (en) * | 1997-11-13 | 1999-06-02 | Hitachi Medical Corp | Fixed anode x-ray tube apparatus |
| US6829329B1 (en) * | 2002-01-17 | 2004-12-07 | Varian Medical Systems Technologies, Inc. | Target for a stationary anode in an x-ray tube |
| CN201720340U (en) * | 2010-07-19 | 2011-01-26 | 杭州凯龙医疗器械有限公司 | X-ray anode cap forming die device |
| US20170076903A1 (en) * | 2015-09-14 | 2017-03-16 | Michael Turner | X-ray tube |
| CN108109893A (en) * | 2018-02-05 | 2018-06-01 | 公安部第研究所 | One kind can cut down stem grid-controlled X-ray tube |
| CN108321071A (en) * | 2018-02-05 | 2018-07-24 | 公安部第研究所 | A kind of hollow structure X-ray tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114334584A (en) * | 2021-12-10 | 2022-04-12 | 上海科颐维电子科技有限公司 | Be used for X-ray tube anode welding device |
| CN114334584B (en) * | 2021-12-10 | 2024-05-24 | 上海科颐维电子科技有限公司 | Be used for X-ray tube positive pole welding set |
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| Publication number | Publication date |
|---|---|
| CN109623061B (en) | 2021-07-06 |
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Effective date of registration: 20230625 Address after: No. 1918, 16th floor, scientific research building, No. 13 Jiuxianqiao Road, Chaoyang District, Beijing 100015 Patentee after: CETC Ruishi Technology (Beijing) Co.,Ltd. Address before: 13 Jiuxianqiao Road, Chaoyang District, Beijing 100015 Patentee before: BEIJING VACUUM ELECTONICS Research Institute |