CN107293463B - High-power klystron microwave output window and processing method - Google Patents
High-power klystron microwave output window and processing method Download PDFInfo
- Publication number
- CN107293463B CN107293463B CN201710452582.0A CN201710452582A CN107293463B CN 107293463 B CN107293463 B CN 107293463B CN 201710452582 A CN201710452582 A CN 201710452582A CN 107293463 B CN107293463 B CN 107293463B
- Authority
- CN
- China
- Prior art keywords
- output window
- window
- sealing sleeve
- microwave output
- closure
- Prior art date
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/12—Vessels; Containers
Landscapes
- Ceramic Products (AREA)
Abstract
The invention discloses a kind of high-power klystron processing methods of microwave output window, individually process each part；Metal sealing sleeve and welding positioning mould are placed in high temperature furnace heating together；Ceramic window is inserted into metal sealing sleeve, the positioning of ceramic window is fixed in metal sealing sleeve with welding positioning mould；Weldment is placed in graphite mo(u)ld, then high intermediate temperature sealing obtains the closure of microwave output window；Closure is bundled with molybdenum ribbon molybdenum filament in closure outer peripheral edge and at ceramic window position, then the upper and lower ends again in closure outer peripheral edge bundle solder wire respectively；Upper output window rigidized cover and lower output window rigidized cover are nested with the upper and lower ends in closure respectively, progress high-temperature soldering in high temperature furnace is finally placed in and forms required microwave output window.The microwave output window manufactured using processing method of the present invention, improves microwave output window yield rate, and then improve the performance of microwave output window, to ensure that the reliability of microwave output window.
Description
Technical field
The present invention relates to the high-temperature soldering fields between metal material and ceramic material, and in particular to a kind of high-power velocity modulation
Effective microwave output window and processing method.
Background technique
In the prior art, the welding between two or more parts is typically all to be assembled by fit dimension.And it is big
Power klystron in microwave output window closure since the thermal expansion coefficient of metal material part and ceramic window differs greatly, though
Before right high-temperature soldering, the cooperation of metal parts and ceramic window is fine, but in high-temperature soldering, metal parts and ceramics window it
Between can still generate slot, so cause the solder yield of high-power klystron microwave output window low, so that microwave exports
The performance of ceramic window is also poor.
As Chinese utility model patent (Authorization Notice No. 203339103, authorized announcement date 2013.12.11) discloses one
Kind microwave power output window and velocity modulation pipe connecting structure, microwave power output window include seal sleeve, connection ring, are fixed on connection
The connection sleeve of ring bottom, the output tile being fixed on the inside of seal sleeve, the molybdenum ribbon for being fixed on seal sleeve outer ring, sealing shroud
Cylinder top is fixed with connection ring, and seal sleeve bottom is fixed with sleeve is connect, and seal sleeve is divided into independently of each other by output tile
Two parts up and down, further include upper sealing washer, lower sealing washer, flange fastener, the upper waveguide for being located at klystron output end
Flange and lower waveguide flange, microwave power output window are located between waveguide flange and lower waveguide flange, connection ring and upper waveguide
Flange is connected by upper sealing washer, and connection sleeve is connect with lower waveguide flange by lower sealing washer, and upper waveguide flange is under
Waveguide flange is fixed by flange fastener.Although the utility model can facilitate disassembly and the output window of output window and klystron
High power test, but when high-temperature soldering, slot can be still generated between metal parts and ceramic window, so leading to high-power velocity modulation
The solder yield of pipe microwave output window is low, so that the performance of microwave output ceramic window is also poor.
Summary of the invention
The purpose of the present invention is to the deficiency of above-mentioned technology, provide it is a kind of can improve microwave output window yield rate, into
And improve high-power klystron microwave output window and the processing method of microwave output window performance.
To achieve the above object, the processing method of the high-power klystron microwave output window designed by the present invention, including
Following steps:
Individually processing metal sealing sleeve, ceramic window, welding positioning mould, graphite mo(u)ld, upper output window rigidized cover and under it is defeated
Exit window rigidized cover, wherein be designed to be interference fitted between metal sealing sleeve and ceramic window, and the cooperation of metal sealing sleeve
Size is 0.06~0.09mm smaller than the fit dimension of ceramic window；
2) metal sealing sleeve and welding positioning mould are placed in high temperature furnace together and are heated up to 300~500 DEG C, then by metal
Sealing-in sleeve and welding positioning mould are taken out from high temperature furnace；
3) after completing step 2), ceramic window is inserted into metal sealing sleeve using interference fit, is positioned with welding
The positioning of ceramic window is fixed in metal sealing sleeve by mould, and first is filled at ceramic window and metal sealing sleeve connection
Solder forms weldment；
4) after completing step 3), weldment is placed in graphite mo(u)ld, is then placed in high temperature furnace and carries out high intermediate temperature sealing, high temperature envelope
Graphite mo(u)ld and welding positioning mould are dismantled after connecing, and obtain the closure of microwave output window；
5) it is tied with molybdenum ribbon binding closure and in closure outer peripheral edge and at ceramic window position with several molybdenum filaments
Bind tight molybdenum ribbon；Then the upper and lower ends again in closure outer peripheral edge bundle solder wire respectively；
6) after completing step 5), upper output window rigidized cover is nested in the upper end of closure, by lower output window rigidized cover set
It sets in the lower end of closure, and fills the second solder in upper output window rigidized cover and lower output window rigidized cover commissure and form microwave
Output window prefabricated component；
7) after completing step 6), microwave output window prefabricated component is placed in high temperature furnace carry out high-temperature soldering formed it is required micro-
Wave output window.
Further, in the step 1), the material of metal sealing sleeve is iron white copper or kovar alloy；Outside ceramic window
Circle metallization and nickel plating.
Further, in the step 2), high temperature furnace keeps the temperature 15~30 minutes after being heated up to 300~500 DEG C.
Further, in the step 3), the ceramics window is built in the middle position of the metal sealing sleeve, and
The raised support of the welding positioning mould the bottom of the ceramic window, the bottom of the metal sealing sleeve is against the weldering
It connects on the boss of positioning mould.
Further, in the step 4), the side wall of the metal sealing sleeve is against on the inner wall of the graphite mo(u)ld, together
When, the bottom end of the graphite mo(u)ld is against on the boss of the welding positioning mould.
Further, in the step 4), the temperature that the high temperature furnace carries out high-temperature soldering is to fill melting for the first solder
Point.
Further, in the step 5), the solder wire of the upper and lower ends binding of closure outer peripheral edge is gold-copper brazing alloy silk
Or golden nickel solder wire, in the step 6), the second solder of commissure is gold-copper brazing alloy or golden nickel solder.
Further, in the step 7), the temperature that the high temperature furnace carries out high-temperature soldering cannot be below solder wire and the
The temperature of peak melting point in two solders.
A kind of high-power klystron microwave output window of processing method as described above preparation, including closure, be nested with
The closure upper end upper output window rigidized cover and be nested with lower output window rigidized cover in the closure lower end；The envelope
Fitting includes metal sealing sleeve and the ceramic window that is built in the metal sealing sleeve, the closure outer peripheral edge and is leaned on
Molybdenum ribbon is bundled at the nearly ceramic window position.
Further, the outer peripheral edge binding of the molybdenum ribbon has tightened several molybdenum filaments.
Compared with prior art, the invention has the following advantages that using the microwave output window of processing method of the present invention manufacture,
Microwave output window yield rate is improved, and then improves the performance of microwave output window, to ensure that the reliable of microwave output window
Property.
Detailed description of the invention
Fig. 1 is that positioning mould structural schematic diagram is welded in the present embodiment；
Fig. 2 is graphite mo(u)ld schematic diagram in the present embodiment；
Fig. 3 is assembling structure schematic diagram in the present embodiment；
Fig. 4 is the closure schematic diagram prepared in the present embodiment；
Fig. 5 is that closure bundlees molybdenum ribbon molybdenum filament structural schematic diagram in the present embodiment；
Fig. 6 is microwave output window structural schematic diagram manufactured in the present embodiment.
Each part numbers are as follows in figure:
Closure 210 (wherein: ceramic window 211, metal sealing sleeve 212, molybdenum ribbon 213, molybdenum filament 214), graphite mo(u)ld 220
(wherein: inner wall 221, bottom end 222), the first solder 230, welding positioning mould 240 (wherein: raised 241, boss 242), weld seam
250, upper output window rigidized cover 260, lower output window rigidized cover 270.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the processing of high-power klystron microwave output window in the present embodiment
Method includes the following steps:
1) metal sealing sleeve 212, ceramic window 211, welding positioning mould 240, graphite mo(u)ld 220, upper output are individually processed
Window rigidized cover 260 and lower output window rigidized cover 270, wherein the material of metal sealing set 212 is the gold such as iron white copper or kovar alloy
Belong to, outer circle metallization and nickel plating when processing ceramic window 211, meanwhile, it is set between metal sealing sleeve 212 and ceramic window 211
Count into interference fit, and the fit dimension of metal sealing sleeve 212 it is smaller by 0.06 than the fit dimension of ceramic window 211~
0.09mm；
2) by the metal sealing sleeve 212 processed and welding positioning mould 240 be placed in together high temperature furnace be heated up to 300~
500 DEG C and heat preservation 15~30 minutes, then metal sealing sleeve 212 and welding positioning mould 240 are taken out from high temperature furnace；
3) after completing step 2), ceramic window 211 is built in the interposition of metal sealing sleeve 212 using interference fit
Place is set, the positioning of ceramic window 211 is fixed in metal sealing sleeve 212 with welding positioning mould 240, i.e. welding positioning mould 240
Protrusion 241 support the bottom of ceramic window 211, the bottom of metal sealing sleeve 212 is against the boss of welding positioning mould 240
On 242, and the first solder 230 is filled with 212 junction of metal sealing sleeve in ceramic window 211 and forms weldment；
4) weldment is placed in graphite mo(u)ld 220, the side wall of metal sealing sleeve 212 is against the inner wall 221 of graphite mo(u)ld 220
On, meanwhile, the bottom end 222 of graphite mo(u)ld 220 is against on the boss 242 of welding positioning mould 240, as shown in figure 3, being then placed in high temperature
High intermediate temperature sealing is carried out in furnace, the temperature that high temperature furnace carries out high-temperature soldering is the fusing point for filling the first solder 230, such as: the first weldering
When material 230 is anaerobic spelter solder, the temperature of welding is 1083 DEG C；After high intermediate temperature sealing, disassembly graphite mo(u)ld 220 and welding positioning mould
240, obtain the closure 210 of required microwave output window；
5) closure 210 is bundled with molybdenum ribbon 213 at 210 outer peripheral edge of closure and 211 position of close ceramic window, be used in combination
Several bindings of molybdenum filament 214 tighten molybdenum ribbon 213；Then the upper and lower ends again in 210 outer peripheral edge of closure bundle solder wire respectively；
Wherein, solder wire be 990~1100 DEG C of fusing point of gold-copper brazing alloy silk or 950 DEG C of fusing point of golden nickel solder wire, as shown in Figure 5；
6) after completing step 5), as shown in fig. 6, upper output window rigidized cover 260 is nested in the upper end of closure 210, it will
Lower output window rigidized cover 270 is nested in the lower end of closure 210, and in upper output window rigidized cover 260 and lower output window rigidized cover
The second solder is filled at 270 weld seams 250 forms microwave output window prefabricated component；Wherein, the second solder of commissure be fusing point 990~
1100 DEG C of 950 DEG C of gold-copper brazing alloy fusing point of golden nickel solder；
7) after completing step 6), microwave output window prefabricated component is placed in high temperature furnace and carries out high-temperature soldering, high-temperature soldering
Temperature cannot be below the temperature of peak melting point in solder wire and solder, if solder wire is 990~1100 DEG C of gold-copper brazing alloy silks of fusing point,
The golden nickel solder that second solder is 950 DEG C, then the temperature of high-temperature soldering cannot be below the fusing point of gold-copper brazing alloy silk, come out and cool down shape
At required microwave output window.
The principle of processing method of the present invention are as follows: firstly, the metal sealing sleeve 220 individually processed and ceramic window 210
Between be designed to be interference fitted, and the fit dimension of metal sealing sleeve 220 it is smaller by 0.06 than the fit dimension of ceramic window 210~
Metal sealing sleeve 220 in the pre-assembly, is first heated up to by 0.09mm, therefore, metal sealing sleeve 220 and ceramic window 210
300~500 DEG C, so that the fit dimension of metal sealing sleeve 220 is increased 0.07~0.1mm, then take out metal sealing sleeve 220
Ceramic window 210 is assembled in metal sealing sleeve 220 rapidly, cooperates metal sealing sleeve 220 with ceramic window 210 non-
Often it is tightly formed weldment；
Secondly, the weldment assembled is placed in graphite mo(u)ld 220 before high-temperature soldering.Due to the thermal expansion coefficient of graphite
Very little, the thermal expansion coefficient with ceramic material (i.e. ceramic window 211) is very close to window frame (the i.e. metal sealing sleeve of output window
212) between ceramic window 211 in high intermediate temperature sealing, 230 fusing point of the first solder that generally uses is 1083 DEG C of anaerobic brazing
Material, under this high temperature, the high temperature sealing mold (i.e. graphite mo(u)ld 220) being made into using graphite material, the size of thermal expansion is only had
0.01mm or so, therefore the window frame for the output window that metal sealing sleeve 212 can be prevented to manufacture expands outward, is fully filled with solder
Weld seam；
It is tightened finally, bundling molybdenum filament 214 with molybdenum ribbon 213 at ceramic window in good 210 outer peripheral edge of closure of sealing-in
It is fixed, then the gold-copper brazing alloy silk that fusing point is 990~1100 DEG C or the gold that fusing point is 950 DEG C are bound in the upper and lower side of closure 210
Nickel solder wire etc., (under this temperature range, the thermal expansion coefficient very little of molybdenum material can prevent iron white copper when high-temperature soldering, can cut down
The metal sealings sleeve such as alloy expands outward), then load onto output window rigidized cover 260 and lower output window rigidized cover 270, and
Upper output window rigidized cover 260 and the gold-copper brazing alloy that filling fusing point is 990~1100 DEG C at lower 270 weld seam 250 of output window rigidized cover
Silk carries out the second solder of high-temperature soldering for 950 DEG C of fusing point of golden nickel solder wire.
The microwave output window manufactured using processing method of the present invention, as shown in fig. 6, including closure 210, being nested in sealing-in
The upper output window rigidized cover 260 of 210 upper end of part and it is nested with lower output window rigidized cover 270 in 210 lower end of closure；Wherein, it seals
Fitting 210 includes metal sealing sleeve 212 and the ceramic window 211 that is built in metal sealing sleeve 212, outside closure 210
Molybdenum ribbon 213 is bundled at periphery and 211 position of close ceramic window, the outer peripheral edge binding of molybdenum ribbon 213 has tightened several molybdenum filaments
214.The microwave output window improves microwave output window yield rate, and then improves the performance of microwave output window, to ensure that
The reliability of microwave output window.
Claims (10)
1. a kind of high-power klystron processing method of microwave output window, it is characterised in that: the processing method includes as follows
Step:
1) individually processing metal sealing sleeve, ceramic window, welding positioning mould, graphite mo(u)ld, upper output window rigidized cover and lower output
Window rigidized cover, wherein be designed to be interference fitted between metal sealing sleeve and ceramic window, and the cooperation ruler of metal sealing sleeve
Small 0.06~the 0.09mm of the very little fit dimension than ceramic window；
2) metal sealing sleeve and welding positioning mould are placed in high temperature furnace together and are heated up to 300~500 DEG C, then by metal sealing
Sleeve and welding positioning mould are taken out from high temperature furnace；
3) after completing step 2), ceramic window is inserted into metal sealing sleeve using interference fit, it will with welding positioning mould
Ceramic window positioning is fixed in metal sealing sleeve, and the first solder is filled at ceramic window and metal sealing sleeve connection
Form weldment；
4) after completing step 3), weldment is placed in graphite mo(u)ld, is then placed in high temperature furnace and carries out high intermediate temperature sealing, after high intermediate temperature sealing
Graphite mo(u)ld and welding positioning mould are dismantled, the closure of microwave output window is obtained；
5) it is pricked in closure outer peripheral edge and with molybdenum ribbon binding closure at ceramic window position and with several molybdenum filaments bindings
Tight molybdenum ribbon；Then the upper and lower ends again in closure outer peripheral edge bundle solder wire respectively；
6) after completing step 5), upper output window rigidized cover is nested in the upper end of closure, lower output window rigidized cover is nested with
The lower end of closure, and fill the second solder in upper output window rigidized cover and lower output window rigidized cover commissure and form microwave output
Window prefabricated component；
7) after completing step 6), microwave output window prefabricated component is placed in high temperature furnace and carries out high-temperature soldering to form required microwave defeated
Exit window.
2. the processing method of high-power klystron microwave output window according to claim 1, it is characterised in that: the step
1) in, the material of metal sealing sleeve is iron white copper or kovar alloy；Ceramic window outer circle metallization and nickel plating.
3. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 2), high temperature furnace keeps the temperature 15~30 minutes after being heated up to 300~500 DEG C.
4. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 3), the ceramics window is built in the middle position of the metal sealing sleeve, and the protrusion of the welding positioning mould
The bottom of the ceramic window is support, the bottom of the metal sealing sleeve is against on the boss of the welding positioning mould.
5. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 4), the side wall of the metal sealing sleeve is against on the inner wall of the graphite mo(u)ld, meanwhile, the bottom end of the graphite mo(u)ld is supported
On the boss of the welding positioning mould.
6. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 4), the temperature that the high temperature furnace carries out high intermediate temperature sealing is the fusing point for filling the first solder.
7. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 5), the solder wire of the upper and lower ends binding of closure outer peripheral edge is gold-copper brazing alloy silk or golden nickel solder wire, the step
6) in, the second solder of commissure is gold-copper brazing alloy or golden nickel solder.
8. the high-power klystron according to claim 1 or claim 2 processing method of microwave output window, it is characterised in that: described
In step 7), the temperature that the high temperature furnace carries out high-temperature soldering cannot be below the temperature of peak melting point in solder wire and the second solder
Degree.
9. a kind of high-power klystron microwave output window of processing method preparation as described in claim 1, including closure, set
Set the closure upper end upper output window rigidized cover and be nested with lower output window rigidized cover in the closure lower end；It is special
Sign is: the closure includes metal sealing sleeve and the ceramic window that is built in the metal sealing sleeve, the envelope
Molybdenum ribbon is bundled at fitting outer peripheral edge and the close ceramic window position.
10. high-power klystron microwave output window according to claim 9, it is characterised in that: the outer peripheral edge of the molybdenum ribbon
Binding has tightened several molybdenum filaments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452582.0A CN107293463B (en) | 2017-06-15 | 2017-06-15 | High-power klystron microwave output window and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452582.0A CN107293463B (en) | 2017-06-15 | 2017-06-15 | High-power klystron microwave output window and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107293463A CN107293463A (en) | 2017-10-24 |
| CN107293463B true CN107293463B (en) | 2019-02-05 |
Family
ID=60097671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710452582.0A Active CN107293463B (en) | 2017-06-15 | 2017-06-15 | High-power klystron microwave output window and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107293463B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179213A (en) * | 1960-03-14 | 1965-04-20 | Eitel Mccullough Inc | Dielectric window and method of making it |
| US5600290A (en) * | 1995-09-05 | 1997-02-04 | Hughes Aircraft Company | Hermetically sealed electromagnetic window and method of forming the same |
| CN102672434A (en) * | 2012-05-23 | 2012-09-19 | 湖北汉光科技股份有限公司 | Method for manufacturing high-power klystron |
| CN203339103U (en) * | 2013-05-10 | 2013-12-11 | 湖北汉光科技股份有限公司 | Structure for connecting microwave power output window and klystron |
-
2017
- 2017-06-15 CN CN201710452582.0A patent/CN107293463B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3179213A (en) * | 1960-03-14 | 1965-04-20 | Eitel Mccullough Inc | Dielectric window and method of making it |
| US5600290A (en) * | 1995-09-05 | 1997-02-04 | Hughes Aircraft Company | Hermetically sealed electromagnetic window and method of forming the same |
| CN102672434A (en) * | 2012-05-23 | 2012-09-19 | 湖北汉光科技股份有限公司 | Method for manufacturing high-power klystron |
| CN203339103U (en) * | 2013-05-10 | 2013-12-11 | 湖北汉光科技股份有限公司 | Structure for connecting microwave power output window and klystron |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107293463A (en) | 2017-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102428051B (en) | Hermetic glass-to-metal seal assembly and method of manufacturing hermetic glass-to-metal seal assembly | |
| CN107096988B (en) | It is a kind of quickly to prepare electronic package material Cu3The method of Sn intermetallic compound | |
| CN107546131B (en) | A kind of production method for encapsulating the metal shell of electronic building brick | |
| CN104966678B (en) | A kind of parallel welder of integrative packaging microwave device array and method | |
| CN109794675A (en) | A kind of welding tooling and welding method for the high sial encapsulating housing of airproof | |
| CN107293463B (en) | High-power klystron microwave output window and processing method | |
| CN103252548B (en) | The disposable welding of a kind of power semiconductor modular | |
| CN104028870A (en) | High-frequency induction solderingmethod for antennaon composite dielectric substrate | |
| CN102610585B (en) | Encapsulation method for silicon chip,and formed electronic element | |
| CN107240539B (en) | 65MW high-power klystron | |
| CN107335880B (en) | The processing method of high-power klystron microwave output window closure | |
| CN114161021B (en) | Sealing welding structure and welding method of airtight micro-rectangular electric connector | |
| WO2006115326A1 (en) | Case bonding method for a flat plate heat spreader by brazing and a heat spreader apparatus thereof | |
| CN208570596U (en) | A kind of thick film hybrid pin connection structure | |
| CN1047463C (en) | Vacuum valve and vacuum breaker adapting it | |
| CN114905182B (en) | Solder preparation method and method for welding cold plate through solder | |
| JP3613875B2 (en) | Manufacturing method of vacuum insulation container | |
| CN217701713U (en) | Air supplement assembly for eutectic bonding and die bonding of semiconductor | |
| KR100246907B1 (en) | Vacuum valve | |
| CN220912097U (en) | Structure for welding water-cooled joint and runner plate by adopting unassisted solder | |
| JPS6324613Y2 (en) | ||
| KR890004841B1 (en) | Magnetron | |
| CN207925393U (en) | A kind of end face carries the vacuum switch tube conducting rod of directional stream-guidance slot | |
| CN208246094U (en) | A kind of bicyclic sub-assembly of soldering | |
| CN105728971B (en) | A kind of welding procedure of collector cylinder blank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |