CN114242542B - Output end cover for traveling wave tube, connecting method of output end cover and traveling wave tube comprising output end cover - Google Patents
Output end cover for traveling wave tube, connecting method of output end cover and traveling wave tube comprising output end cover Download PDFInfo
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- CN114242542B CN114242542B CN202111565798.0A CN202111565798A CN114242542B CN 114242542 B CN114242542 B CN 114242542B CN 202111565798 A CN202111565798 A CN 202111565798A CN 114242542 B CN114242542 B CN 114242542B
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- 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
-
- 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
- B23K28/00—Welding or cutting not covered by groups B23K5/00 - B23K26/00
- B23K28/02—Combined welding or cutting procedures or apparatus
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present disclosure relates to an output end cover for a traveling wave tube, a connection method thereof, and a traveling wave tube including the same, wherein the output end cover for the traveling wave tube includes: an end cap body comprising: a base adapted to be welded to a collector assembly of a traveling wave tube; and an outer barrel extending from the base away from the collector assembly; and the combination part is used for combining the output slow wave component of the traveling wave tube with the outer cylinder body. Under the condition that the combination part is welded with the output slow wave component, the combination part is welded with the outer cylinder body of the end cover main body, and then the base part of the end cover main body welded with the combination part is welded with the collector component. According to the method, the output end cover of the traveling wave tube is designed to be of a split structure, so that the drift-free region of the traveling wave tube is realized, the problem that the traveling wave tube without the drift region is difficult to lap is solved, the length of the traveling wave tube is shortened, the efficiency of the traveling wave tube is improved, and the yield of the traveling wave tube is improved.
Description
Technical Field
The disclosure relates to the technical field of microwave vacuum electronic devices, in particular to an output end cover for a traveling wave tube, a connecting method thereof and the traveling wave tube comprising the output end cover.
Background
The traveling wave tube is a core device for realizing signal amplification in satellite communication, and in the process production of the traveling wave tube, the traveling wave tube mainly comprises an electron gun, a slow wave component and a collector, and the traditional welding mode of the slow wave component and the collector adopts high-frequency induction brazing, and the connecting mode adopts a lap joint structure with a drift region, so that the high-frequency induction centralized welding is facilitated. The drift region structure generally adopts hydrogen-protected high-frequency induction welding, a heat affected zone is large, thermal shock is generated to an energy transmission window, and in the welding process, the change of a fit clearance is caused when brazing filler metal is melted, so that the perpendicularity of an output end cover assembly and an output high-frequency assembly is poor, and the reject ratio is high. When the structure of the drift region is not provided, the position of the high-frequency coil is narrow during high-frequency brazing, short circuit or ignition is caused by the contact between the coil and a welded piece in the welding process, the heat impact on the energy transmission window in the welding process is large, the problems of air leakage rejection of the energy transmission window of the traveling wave tube, deformation of the joint and the like are easily caused, and the yield and reliability of the traveling wave tube are reduced. And argon arc welding or laser welding can finish the processes of pre-fixing, measuring, welding and the like under the conditions of air environment and cold state fixing of a die, so that the perpendicularity of an output end cover and an output slow wave assembly is ensured, and the yield and the dimensional accuracy of the traveling wave tube are improved. Meanwhile, in order to improve the efficiency of the traveling wave tube, a structure without a drift region of the traveling wave tube is to be realized. The output end cover is designed into a split structure, and a connecting method is designed, so that the problem that the traveling wave tube without a drift region is difficult to lap and manufacture is solved, the length of the traveling wave tube can be shortened, the efficiency of the traveling wave tube is improved, and the reliability and the yield of the traveling wave tube are improved.
Disclosure of Invention
In view of the above, the present disclosure provides an output end cover for a traveling wave tube, a connection method thereof, and a traveling wave tube including the output end cover, so as to solve at least one technical problem of the foregoing and other aspects.
To achieve the above object, according to one aspect of the present disclosure, there is provided an output end cap for a traveling wave tube including: an end cap body comprising: a base adapted to be welded to a collector assembly of a traveling wave tube; and an outer barrel extending from the base away from the collector assembly; and the combination part is used for combining the output slow wave component of the traveling wave tube with the outer cylinder body. Under the condition that the combination part is welded with the output slow wave component, the combination part is welded with the outer cylinder body of the end cover main body, and then the base part of the end cover main body welded with the combination part is welded with the collector component.
According to an embodiment of the present disclosure, wherein the joint comprises: an inner cylinder inserted into and welded to the outer cylinder; and a flange extending radially outwardly from the inner barrel outside the outer barrel, the flange being welded to the output slow wave assembly.
According to the embodiment of the disclosure, the outer cylinder body and the inner cylinder body are combined through an argon arc welding thin wall of 0.5-0.7 mm; and the base and the collector assembly are combined through argon arc welding thin walls of 0.5-0.7 mm.
According to an embodiment of the present disclosure, wherein the end cap body is made of at least one of pure iron, kovar material, or at least one of monel, non-magnetic stainless steel material; the joint is made of monel or nonmagnetic stainless steel material.
In another aspect of the present disclosure, a connection method for connecting the output end cap for a traveling wave tube is provided, including: brazing the flange of the joint part and the output slow wave component in a hydrogen protection furnace; partially inserting a joint welded with the output slow wave assembly into an outer cylinder of the end cap body; welding the joint part with the outer cylinder body; the base of the end cap body welded to the joint was welded to the collector assembly using continuous wave argon arc welding.
According to an embodiment of the present disclosure, wherein welding the joint portion with the outer cylinder includes: fixing the output slow wave component of the welded joint part by a die, and fixing the end cover main body by the die; the inner cylinder body of the joint part and the outer cylinder body of the end cover main body are pre-fixed by adopting laser spot welding; and welding the inner welding seam structure of the inner cylinder body and the outer cylinder body by using continuous wave argon arc welding.
According to the embodiment of the disclosure, in the laser spot welding pre-fixing process, the welding parameter of the laser spot welding is 8ms in pulse width and 600J in energy; the inner weld structure reduces the gas in the traveling wave tube and improves the stability of the vacuum degree in the working process of the traveling wave tube.
According to an embodiment of the present disclosure, wherein welding the base with the collector assembly comprises: fixing the output slow wave component of the welded end cover main body and the joint part by a die, and fixing the collector component by the die; pre-fixing the base part of the end cover main body and the collector assembly by adopting pulsed argon arc welding; the base and collector assembly were welded using continuous wave argon arc welding.
According to an embodiment of the present disclosure, wherein the welding current of pulsed argon arc welding is 10A.
In a third aspect of the present disclosure, there is provided a traveling wave tube, including: the output end cap of any one of the embodiments above; the output slow wave assembly, one end of which is welded with the joint part of the output end cover; and a collector assembly coupled to the base of the output end cap.
According to the output end cover for the traveling wave tube, the connecting method thereof and the traveling wave tube comprising the output end cover, which are disclosed by the embodiment of the invention, the perpendicularity of the output end cover and the output slow wave component can be ensured by designing the output end cover into a split structure, and the yield and the dimensional accuracy of the traveling wave tube are improved.
Drawings
FIG. 1 is a partial cross-sectional view of a traveling wave tube of a conventional integral output end cap;
FIG. 2 is a cross-sectional view of an output end cap for a traveling wave tube in accordance with an embodiment of the present disclosure;
FIG. 3 is a partial cross-sectional view of a traveling wave tube of a split output end cap of an embodiment of the present disclosure; and
fig. 4 is a schematic diagram of perpendicularity measurement of an output slow wave assembly and an output end cap according to an embodiment of the present disclosure.
Description of the reference numerals
1. End cap body
11. Base part
12. Outer cylinder
2. Joint portion
21. Inner cylinder
22. Flange
3. Collector assembly
4. Output slow wave assembly
5. Energy transmission window
6. Drift region
7. Integrated output end cover
8. High-frequency induction brazing solder
9. High-frequency induction brazing coil
10. Output end cover
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
In the process production of the traditional traveling wave tube, the traditional welding mode of the slow wave component and the collector adopts high-frequency induction brazing, and the lap joint structure with the drift region is convenient for high-frequency induction centralized welding. When the structure of the drift region is not provided, the space of the high-frequency coil is narrow during high-frequency brazing, short circuit or ignition is caused by the contact between the coil and a welded piece in the welding process, the heat shock to the energy transmission structure in the welding process is large, the problems of air leakage rejection, joint deformation and the like of the energy transmission structure of the traveling wave tube are easily caused, and the yield of the traveling wave tube is reduced and the reliability is low.
To this end, according to one aspect of the present disclosure, there is provided an output end cap for a traveling wave tube including: the end cover main body and the combining part are of two split structures. Wherein, the end cap main part includes: a base adapted to be welded to a collector assembly of a traveling wave tube and an outer barrel extending from the base away from the collector assembly. The combination part is the combination position of the output slow wave component of the traveling wave tube and the outer cylinder body. Under the condition that the combination part is welded with the output slow wave component, the combination part is welded with the outer cylinder body of the end cover main body, and then the base part of the end cover main body welded with the combination part is welded with the collector component.
According to another aspect of the present disclosure, there is provided a connection method using the output end cap for a traveling wave tube, including: brazing the flange of the joint part and the output slow wave component in a hydrogen protection furnace; then the joint part welded with the output slow wave component is partially inserted into the outer cylinder body of the end cover main body, and the joint part is welded with the outer cylinder body; and finally, welding the base part of the end cover main body welded with the joint part and the collector assembly by continuous wave argon arc welding.
According to another aspect of the present disclosure, there is provided a traveling wave tube including the output end cap described above; the output slow wave assembly, one end of which is welded with the joint part of the output end cover; and a collector assembly coupled to the base of the output end cap.
In the output end cover for the traveling wave tube, the connecting method thereof and the traveling wave tube, the output end cover of the traveling wave tube is designed into a split structure, and argon arc welding or laser welding is adopted, so that the processes of pre-fixing, measuring, welding and the like can be completed under the conditions of air environment and cold state fixing of a die, the perpendicularity of the output end cover and an output slow wave component is ensured, and the yield and the dimensional accuracy of the traveling wave tube are improved. Meanwhile, the traveling wave tube has no drift region, the length of the traveling wave tube is shortened, the efficiency of the traveling wave tube is improved, the problem that the traveling wave tube without the drift region is difficult to lap joint and manufacture is solved, and the reliability and the yield of the traveling wave tube are improved.
Specific examples are set forth below to provide a detailed description of the technical aspects of the present disclosure. It should be noted that the following specific embodiments are only examples and are not intended to limit the disclosure.
Fig. 1 is a partial cross-sectional view of a traveling wave tube of a conventional integral output end cap.
As shown in fig. 1, 3 is a collector assembly, 4 is an output slow wave assembly, 5 is an energy transmission window, 6 is a drift region, 7 is an integral output end cap, 8 is high frequency induction brazing solder, and 9 is a high frequency induction brazing coil. In the conventional production process of the traveling wave tube, the output slow wave component 4 and the collector component 3 are welded in a high-frequency induction brazing manner, and the connecting manner adopts a lap joint structure with a drift region 6. In order to improve the efficiency of the traveling wave tube and shorten the length of the traveling wave tube, a drift-free region of the traveling wave tube is to be realized, and the problem that the traveling wave tube without the drift region is difficult to lap joint and manufacture is solved.
FIG. 2 is a cross-sectional view of an output end cap for a traveling wave tube in accordance with an embodiment of the present disclosure; fig. 3 is a partial cross-sectional view of a traveling wave tube of a split output end cap of an embodiment of the present disclosure.
As shown in fig. 2 and 3, the output end cap 10 for a traveling wave tube of the present disclosure includes: the end cover body 1 and the joint 2 form two split structures. The end cap body 1 includes: a base 11 adapted to be welded to the collector assembly 3 of the travelling wave tube, and an outer barrel 12 extending from the base 11 away from the collector assembly 3. The output slow wave component 4 of the traveling wave tube is combined with the outer cylinder 12 through the combining part 2. In the case where the joint 2 is welded to the output slow wave assembly 4, the joint 2 is welded to the outer cylindrical body 12 of the end cap body 1, and then the base 11 of the end cap body 1 welded to the joint 2 is welded to the collector assembly 3.
According to an embodiment of the present disclosure, the joint 2 includes: an inner barrel 21 inserted and welded into the outer barrel 12, and a flange 22 extending radially outwardly from the inner barrel 21 at the outside of the outer barrel 12, the flange 22 being welded to the output slow wave assembly 4.
According to an embodiment of the present disclosure, the outer cylinder 12 and the inner cylinder 21 are joined by 0.5-0.7mm argon arc welding thin wall; and the base 11 and the collector assembly 3 are combined by argon arc welding thin wall of 0.5-0.7mm, and the surfaces of the base and the collector assembly are not coated with nickel or copper layers.
According to the embodiment of the disclosure, the split welding structure of the output end cover 10 adopts 0.5-0.7mm thick argon arc welding thin walls, the heat affected zone is concentrated on the output end cover 10, thermal shock is not caused to the energy transmission window 5, and the yield and reliability in the traveling wave tube manufacturing process are improved.
According to the embodiment of the present disclosure, the end cover main body 1 is made of a magnetic material or a non-magnetic material, wherein the magnetic material is at least one of pure iron and kovar materials, and the non-magnetic material is at least one of monel and non-magnetic stainless steel materials; the joint 2 is made of monel or nonmagnetic stainless steel material.
According to an embodiment of the present disclosure, a connection method for connecting the output end cap 10 for a traveling wave tube includes: brazing the flange 22 of the joint 2 and the output slow wave assembly 4 in a hydrogen protection furnace; partially inserting the joint 2 welded with the output slow wave assembly 4 into the outer cylinder 12 of the end cap body 1; welding the joint 4 with the outer cylinder 12; the base 11 of the end cap body 1 welded to the joint 2 is welded to the collector assembly 3 using continuous wave argon arc welding.
Fig. 4 is a schematic diagram of perpendicularity measurement of an output slow wave assembly and an output end cap according to an embodiment of the present disclosure.
According to an embodiment of the present disclosure, wherein welding the joint 2 with the outer cylinder 12 includes: fixing the output slow wave component 4 of the welded joint part 2 by a die, and fixing the end cover main body 1 by the die; the inner cylinder 21 of the joint part 2 and the outer cylinder 12 of the end cover main body 1 are pre-fixed by adopting laser spot welding; the inner tube 21 and the outer tube 12 were welded to each other with an inner weld structure by continuous wave argon arc welding.
According to the embodiment of the disclosure, referring to fig. 4, in the process of partially inserting the joint 2 welded with the output slow wave component 4 into the outer cylinder 12 of the end cover main body 1, to ensure form and position tolerance, pre-fixing the joint by adopting laser spot welding, symmetrically fixing two points, and then measuring the perpendicularity of the output slow wave component 4 and the output end cover 10, so as to meet the requirement of 0.03mm of perpendicularity; when the perpendicularity is unqualified, the assembly is manually adjusted to be qualified, the pre-fixed assembly is rotated by 90 degrees, and two points are symmetrically pre-fixed, so that the perpendicularity is measured, and the perpendicularity is within 0.03 mm. And reinforcing four pre-fixed points by using pulsed argon arc welding, and measuring whether the verticality meets the requirement or not again.
According to the embodiment of the disclosure, in the laser spot welding pre-fixing process, the welding parameter of the laser spot welding is 8ms in pulse width and 600J in energy.
According to the embodiment of the disclosure, the inner cylinder 21 of the joint 2 and the outer cylinder 12 of the end cover main body 1 are welded by adopting an inner welding seam structure, the inner welding seam structure reduces the gas in the traveling wave tube, and the stability of the vacuum degree in the working process of the traveling wave tube is improved.
According to an embodiment of the present disclosure, the process of welding the base 11 to the collector assembly 3 includes: fixing the output slow wave component 4 of the welded end cover main body 1 and the joint part 2 by a die, and fixing the collector component 3 by the die; pre-fixing the base 11 of the end cover main body 1 and the collector assembly 3 by adopting pulsed argon arc welding; the base 11 is welded to the collector assembly 3 using continuous wave argon arc welding.
According to the embodiment of the present disclosure, in the process of welding the base 11 with the collector assembly 3, the output slow wave assembly 4 welded with the base 11 of the end cap body 1 is fixed with a mold, the collector assembly 3 is fixed with a mold, and the collector assembly is wrapped with an oxygen-free copper heat dissipation mold, and the same pre-fixing and verticality measuring method as the welding process of the inner cylinder 21 of the joint 2 with the outer cylinder 12 of the end cap body 1 is adopted.
According to an embodiment of the present disclosure, the welding current of pulsed argon arc welding is 10A.
According to the embodiment of the disclosure, after the inner cylinder 21 of the joint part 2 and the outer cylinder 12 of the end cover main body 1 and the base 11 of the end cover main body 1 and the collector assembly 3 are welded, a helium mass spectrometer leak detector is adopted for leak detection, so that the requirement of 1×10 is met - 10 Pa.m 3 Leak rate requirements of/s.
According to an embodiment of the present disclosure, there is also provided a traveling wave tube including: the output end cap 10 of any of the embodiments described above; one end of the output slow wave component is welded with the joint part of the output end cover; and a collector assembly coupled to the base of the output end cap.
According to the output end cover for the traveling wave tube, the connecting method thereof and the traveling wave tube comprising the output end cover, the output end cover of the traveling wave tube is designed to be of a split structure, argon arc welding or laser welding is adopted, and the processes of pre-fixing, measuring, welding and the like can be completed under the conditions of air environment and cold state fixing of a die, so that the perpendicularity of the output end cover and an output slow wave component is ensured, and the yield and the dimensional accuracy of the traveling wave tube are improved. Meanwhile, the traveling wave tube has no drift region, the length of the traveling wave tube is shortened, the efficiency of the traveling wave tube is improved, the problem that the traveling wave tube without the drift region is difficult to lap joint and manufacture is solved, and the reliability and the yield of the traveling wave tube are improved.
It should be further noted that, the directional terms mentioned in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings, and are not intended to limit the scope of the present disclosure. Like elements are denoted by like or similar reference numerals throughout the drawings. Conventional structures or constructions will be omitted when they may cause confusion in understanding the present disclosure.
And the shapes and dimensions of the various elements in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure. Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the disclosure, various features of the disclosure are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the method of the invention should not be interpreted as reflecting the intention: i.e., the claimed disclosure requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this disclosure.
While the foregoing is directed to embodiments of the present disclosure, other and further details of the invention may be had by the present application, it is to be understood that the foregoing description is merely exemplary of the present disclosure and that no limitations are intended to the scope of the disclosure, except insofar as modifications, equivalents, improvements or modifications may be made without departing from the spirit and principles of the present disclosure.
Claims (9)
1. An output end cap for a traveling wave tube, comprising:
end cap body (1), comprising:
a base (11) adapted to be welded to a collector assembly (3) of a travelling wave tube; and
an outer barrel (12) extending from the base away from the collector assembly (3); the output slow wave component (4) of the traveling wave tube is combined with the outer cylinder (12) through the combining part (2);
wherein, under the condition that the combination part (2) is welded with the output slow wave component (4), the combination part (2) is welded with the outer cylinder body (12) of the end cover main body (1), and then the base part (11) of the end cover main body (1) welded with the combination part (2) is welded with the collector component (3);
wherein the end cap body (1) and the joint (2) form two split structures, at least a part of the joint (2) being configured to be embedded in the outer cylinder (12) provided in the end cap body (1);
wherein the end cover main body (1) is made of at least one of pure iron and kovar materials or at least one of Monel and nonmagnetic stainless steel materials, and the joint part (2) is made of Monel or nonmagnetic stainless steel materials.
2. The output end cap for a traveling wave tube according to claim 1, wherein the joint (2) comprises:
an inner cylinder (21) inserted and welded into the outer cylinder (12); and
-a flange (22) extending radially outwards from the inner cylinder (21) outside the outer cylinder (12), the flange (22) being welded to the output slow wave assembly (4).
3. The output end cap for a traveling wave tube as claimed in claim 2, wherein,
the outer cylinder body (12) is combined with the inner cylinder body (21) through 0.5-0.7mm argon arc welding thin wall; and
the base (11) and the collector assembly (3) are combined through argon arc welding thin wall with the thickness of 0.5-0.7 mm.
4. A method of connecting an output end cap for a traveling wave tube as claimed in any one of claims 1 to 3, comprising:
s1: brazing a flange (22) of the joint part (2) and the output slow wave assembly (4) in a hydrogen protection furnace;
s2: partially inserting a joint (2) welded with the output slow wave assembly (4) into an outer cylinder (12) of the end cover main body (1);
s3: welding the joint part (2) with the outer cylinder body (12);
s4: the base (11) of the end cap body (1) welded to the joint (2) is welded to the collector assembly (3) using continuous wave argon arc welding.
5. The connection method according to claim 4, wherein welding the joint (2) with the outer cylinder (12) comprises:
s31: fixing the output slow wave component (4) welded with the joint part (2) by a die, and fixing the end cover main body (1) by the die;
s32: pre-fixing an inner cylinder (21) of the joint part (2) and an outer cylinder (12) of the end cover main body (1) by adopting laser spot welding;
s33: and welding the inner cylinder (21) and the outer cylinder (12) by using continuous wave argon arc welding.
6. The connection method according to claim 5, wherein,
in the laser spot welding pre-fixing process, the welding parameters of the laser spot welding are 8ms of pulse width and 600J of energy;
the inner weld structure reduces the gas in the traveling wave tube and improves the stability of the vacuum degree in the working process of the traveling wave tube.
7. The connection method according to claim 4, wherein welding the base (11) with the collector assembly (3) comprises:
s41: fixing the output slow wave component (4) welded with the end cover main body (1) and the joint part (2) by a die, and fixing the collector component (3) by a die;
s42: pre-fixing the base part (11) of the end cover main body (1) and the collector assembly (3) by adopting pulsed argon arc welding;
s43: -welding the base (11) with the collector assembly (3) using continuous wave argon arc welding.
8. The connection method according to claim 7, wherein,
the welding current of the pulsed argon arc welding is 10A.
9. A traveling wave tube, comprising:
an output end cap (10) according to any one of claims 1 to 3;
one end of the output slow wave component is welded with a joint part (2) of the output end cover; and
a collector assembly coupled to the base (11) of the output end cap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111565798.0A CN114242542B (en) | 2021-12-20 | 2021-12-20 | Output end cover for traveling wave tube, connecting method of output end cover and traveling wave tube comprising output end cover |
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| CN202111565798.0A CN114242542B (en) | 2021-12-20 | 2021-12-20 | Output end cover for traveling wave tube, connecting method of output end cover and traveling wave tube comprising output end cover |
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| CN114914136B (en) * | 2022-04-11 | 2025-03-28 | 中国电子科技集团公司第十二研究所 | Traveling wave tube body collector assembly structure, traveling wave tube and assembly method |
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