CN115232952B - Preparation method of spiral line in high-frequency component - Google Patents
Preparation method of spiral line in high-frequency component Download PDFInfo
- Publication number
- CN115232952B CN115232952B CN202210688379.4A CN202210688379A CN115232952B CN 115232952 B CN115232952 B CN 115232952B CN 202210688379 A CN202210688379 A CN 202210688379A CN 115232952 B CN115232952 B CN 115232952B
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- China
- Prior art keywords
- spiral line
- spiral
- temperature
- ceramic tool
- vacuum
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 3
- 108010083687 Ion Pumps Proteins 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 abstract description 17
- 238000005265 energy consumption Methods 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 13
- 239000001257 hydrogen Substances 0.000 description 13
- 229910052739 hydrogen Inorganic materials 0.000 description 13
- 239000007789 gas Substances 0.000 description 8
- 230000005855 radiation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
-
- 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
Abstract
The invention provides a preparation method of a spiral line in a high-frequency component, which comprises the following steps: step 1, respectively spot-welding nickel wires at two ends of a core rod with wound spiral wires, placing the core rod in a ceramic tool, respectively fixing two ends of a plurality of wound spiral wires on electrode potentials at two sides of the ceramic tool, then placing the ceramic tool on a bracket in a vacuum furnace, starting a pump source, vacuumizing the vacuum furnace, and directly and electrically heating after the vacuum degree reaches the technological requirement; and 2, maintaining the preset heating time and temperature. The invention adopts the vacuum furnace to directly electrically heat and shape, and manufactures the special ceramic tool, thereby realizing simultaneous shaping of a plurality of input and output spiral lines at a time, improving the efficiency and reducing the energy consumption.
Description
Technical Field
The invention relates to the field of electronic equipment and processing, in particular to a preparation method of a spiral line in a high-frequency assembly.
Background
The existing spiral line shaping technology adopts a hydrogen furnace radiation heating shaping mode, and comprises the following specific operation steps:
1) Cleaning the wound spiral line (tungsten or molybdenum spiral line) with acetone and absolute ethyl alcohol, and drying in a hot air box at 60+ -5deg.C for at least 30min;
2) After drying, placing the spiral line with the core rod in small quartz tubes, wherein each quartz tube is provided with one spiral line;
3) The spiral line is heated and shaped in a hydrogen furnace in a radiation way, and the hydrogen burning basic parameters are as follows: tungsten spiral line: 1250+/-50 ℃ for 10-20 min; molybdenum spiral line: 1050+/-50 ℃ for 10-20 min; determining technological parameters according to the specific spiral line size and the spiral line state after shaping;
4) And taking out the spiral line after the hydrogen burning shaping of the spiral line is finished, putting the spiral line into a common glass tube, and flowing to the next working procedure.
In the prior art, a hydrogen furnace is adopted for radiation heating, the shaping time is long, hydrogen is adopted as a protective gas in the prior art, more energy is consumed, and small hydrogen molecules can remain in the structure;
disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of a key piece spiral line in a high-frequency assembly, which adopts a vacuum furnace to directly perform electric heating shaping and manufacture a special ceramic tool, so that multiple input and output spiral lines can be shaped simultaneously at one time, and the efficiency is improved; the specific process parameters can determine the shaping temperature and time according to the actual materials used and the specification and the size of the spiral line.
The technical scheme of the invention is as follows: a preparation method of a spiral line in a high-frequency assembly comprises the following steps:
step 1, respectively spot-welding nickel wires at two ends of a core rod with wound spiral wires, placing the core rod in a ceramic tool, respectively fixing two ends of a plurality of wound spiral wires on electrode potentials at two sides of the ceramic tool, then placing the ceramic tool on a bracket in a vacuum furnace, starting a pump source, vacuumizing the vacuum furnace, and directly and electrically heating after the vacuum degree reaches the technological requirement;
and 2, maintaining the preset heating time and temperature.
The beneficial effects are that:
compared with the prior art, the invention has the following advantages:
1. the invention aims to shorten the preparation period by adopting a direct electric heating mode in a vacuum furnace environment;
2. by adopting the method for shaping, the spiral line can thoroughly remove gas in a high vacuum state, the gas discharge amount can be reduced in a low-temperature state of a subsequent whole-pipe aging test, and the traveling wave tube with the vacuum degree in the tube can play a good role;
3. the invention can improve the efficiency and can shape a plurality of roots at a time;
4. the process method can obviously improve the working efficiency and reduce the energy consumption.
The hydrogen belongs to a reducing atmosphere, and the heating has the advantages of removing an oxide layer of molybdenum or tungsten and having a purifying and anti-oxidation protective atmosphere. The invention does not adopt hydrogen atmosphere protection, because the tungsten or molybdenum oxide layer can be decomposed under the high-temperature high-vacuum state, the purpose of the same deoxidization layer can be achieved, meanwhile, no hydrogen micromolecule enters the spiral line matrix under high vacuum, the release of residual hydrogen is reduced during the test of the traveling wave tube, the traveling wave tube can work more stably, and the vacuum effect is kept better.
Drawings
Fig. 1: the schematic diagram of the direct electric heating preparation method of the vacuum furnace is provided;
fig. 2: a partial enlarged view;
fig. 3: a schematic diagram of the spiral line after shaping;
fig. 4: structural design schematic diagram of spiral line shaping fixture.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without the inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
According to an embodiment of the invention, a method for preparing a key piece spiral line in a high-frequency assembly is provided, which comprises the following steps:
step 1, respectively spot-welding nickel wires at two ends of a core rod with wound spiral wires, as shown in fig. 1-3, placing the core rod in a shaping fixture (such as a ceramic fixture), respectively fixing two ends of a plurality of wound spiral wires on electrode potentials at two sides of the ceramic fixture, placing the ceramic fixture on a bracket in a vacuum furnace, starting a pump source, vacuumizing the vacuum furnace, and directly and electrically heating after the vacuum degree meets the technological requirement;
step 2, the invention aims to carry out direct electric heating shaping under the vacuum furnace environment, keep a certain heating time and temperature and have a vacuum degree of 2x10 -5 Pa～3x10 -5 Pa, current 40A, temperature: tungsten screwA wire: 1250+/-50 ℃ for 10-20 min; molybdenum spiral line: 1050+/-50 ℃ for 10-20 min.
Step 3, adopting the method for shaping, the time is shorter, meanwhile, the spiral line is thoroughly deaerated in a vacuum state, in the electric heating process, along with the rising of the temperature, the gas in the matrix is continuously released, and the molecular pump or the ion pump of the vacuum furnace is continuously pumped, so that the gas in the matrix of the spiral line is less and less, thereby the deaeration effect can be achieved, meanwhile, the vacuum degree in the furnace is raised or maintained for 10-20 minutes at high temperature, the content of the gas is less and less, or the deaeration is thorough at a specific temperature. The air release can be reduced in the low-temperature state of the subsequent whole-tube aging test, and the vacuum degree in the tube can be kept to play a good role.
Fig. 4 is a schematic design drawing of a shaping fixture, and the fixture adopts 95% alumina ceramic, and the structural design of the fixture not only can meet the insulation requirement between spiral lines of electric heating of the spiral lines, but also can shape 20 input spiral lines and 20 output spiral lines simultaneously, thereby saving resources and improving efficiency.
By adopting the method, the invention can improve the efficiency and can process a plurality of roots at one time.
In summary, the invention is applied to a preparation method of a key piece helix in the preparation of a helix traveling wave tube and a high-frequency component,
(1) The spiral line shaping mode is solved, namely, a radiation heating mode is adopted in a hydrogen furnace, so that the coiled spiral line is shaped; the invention adopts a direct body heating mode, and winds the spiral line and the core rod to be directly electrically heated and shaped;
(2) The invention solves the problem of removing residual gas in the deep layer of the spiral line body, which is carried out in a vacuum furnace, and the residual gas in the spiral line body can be fully removed at high temperature in a high-vacuum environment;
(3) The invention uses direct electric heating mode, does not need hydrogen protection, shortens the shaping time from 6 hours to about 2 hours, can shape 20 input and 20 output spiral lines at the same time, saves resources and improves efficiency.
While the foregoing has been described in relation to illustrative embodiments thereof, so as to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, but is to be construed as limited to the spirit and scope of the invention as defined and defined by the appended claims, as long as various changes are apparent to those skilled in the art, all within the scope of which the invention is defined by the appended claims.
Claims (1)
1. The preparation method of the spiral line in the high-frequency assembly is characterized by comprising the following steps of:
step 1, respectively spot-welding nickel wires at two ends of a core rod with wound spiral wires, placing the core rod in a ceramic tool, respectively fixing two ends of a plurality of wound spiral wires on electrode potentials at two sides of the ceramic tool, then placing the ceramic tool on a bracket in a vacuum furnace, starting a pump source, vacuumizing the vacuum furnace, and directly and electrically heating after the vacuum degree reaches the technological requirement;
step 2, keeping a preset heating time and temperature;
in the step 2, the vacuum degree is 2x10 -5 Pa ~3x10 -5 Pa current 40A, temperature: tungsten spiral line: 1250+/-50 ℃ for 10-20 min; molybdenum spiral line: 1050+/-50 ℃ for 10-20 min; meanwhile, the spiral line is thoroughly deaerated in a vacuum state, in the electric heating process, along with the rising of the temperature, the gas in the matrix is continuously released, and the molecular pump or the ion pump of the vacuum furnace is continuously pumped, so that the gas in the spiral line matrix is less and less, the deaeration effect can be achieved, and meanwhile, the temperature is kept for 10-20 minutes at high temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688379.4A CN115232952B (en) | 2022-06-17 | 2022-06-17 | Preparation method of spiral line in high-frequency component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210688379.4A CN115232952B (en) | 2022-06-17 | 2022-06-17 | Preparation method of spiral line in high-frequency component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115232952A CN115232952A (en) | 2022-10-25 |
| CN115232952B true CN115232952B (en) | 2023-11-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210688379.4A Active CN115232952B (en) | 2022-06-17 | 2022-06-17 | Preparation method of spiral line in high-frequency component |
Country Status (1)
| Country | Link |
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| CN (1) | CN115232952B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4923529A (en) * | 1987-10-22 | 1990-05-08 | Tungsram Reszvenytarsasag | Equipment for continuous heat treatment of tungsten filaments wound on molybdenum cores |
| US5193100A (en) * | 1990-06-29 | 1993-03-09 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Apparatus for detecting gaseous discharge in vacuum furnaces |
| JP2010024481A (en) * | 2008-07-17 | 2010-02-04 | Arukemii:Kk | Method for directly quenching hot-rolled bar |
| CN102605306A (en) * | 2012-03-22 | 2012-07-25 | 安徽华东光电技术研究所 | Spiral line shaping annealing process |
| CN103805763A (en) * | 2014-01-23 | 2014-05-21 | 燕山大学 | Thermo-mechanical treatment method for thinning surface layer structure of roller |
| CN107227400A (en) * | 2017-05-31 | 2017-10-03 | 无锡盛力达科技股份有限公司 | Monofilament single control steel bead wire production line is tempered heater |
| CN113664317A (en) * | 2021-08-16 | 2021-11-19 | 西安远航真空钎焊技术有限公司 | Forming method of spiral line structure high-temperature alloy micro-fine tube |
-
2022
- 2022-06-17 CN CN202210688379.4A patent/CN115232952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4923529A (en) * | 1987-10-22 | 1990-05-08 | Tungsram Reszvenytarsasag | Equipment for continuous heat treatment of tungsten filaments wound on molybdenum cores |
| US5193100A (en) * | 1990-06-29 | 1993-03-09 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh | Apparatus for detecting gaseous discharge in vacuum furnaces |
| JP2010024481A (en) * | 2008-07-17 | 2010-02-04 | Arukemii:Kk | Method for directly quenching hot-rolled bar |
| CN102605306A (en) * | 2012-03-22 | 2012-07-25 | 安徽华东光电技术研究所 | Spiral line shaping annealing process |
| CN103805763A (en) * | 2014-01-23 | 2014-05-21 | 燕山大学 | Thermo-mechanical treatment method for thinning surface layer structure of roller |
| CN107227400A (en) * | 2017-05-31 | 2017-10-03 | 无锡盛力达科技股份有限公司 | Monofilament single control steel bead wire production line is tempered heater |
| CN113664317A (en) * | 2021-08-16 | 2021-11-19 | 西安远航真空钎焊技术有限公司 | Forming method of spiral line structure high-temperature alloy micro-fine tube |
Non-Patent Citations (2)
| Title |
|---|
| 行波管螺旋线加热去气工艺研究;刘燕文;张晓林;许柯;蔡延宁;韩勇;唐伯俊;;真空电子技术(第01期);全文 * |
| 行波管螺旋线的光学检测方法;王建;李飞;方有维;;光学学报(第09期);全文 * |
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| CN115232952A (en) | 2022-10-25 |
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