CN102605306B - Spiral line shaping annealing process - Google Patents
Spiral line shaping annealing process Download PDFInfo
- Publication number
- CN102605306B CN102605306B CN201210076924.0A CN201210076924A CN102605306B CN 102605306 B CN102605306 B CN 102605306B CN 201210076924 A CN201210076924 A CN 201210076924A CN 102605306 B CN102605306 B CN 102605306B
- Authority
- CN
- China
- Prior art keywords
- temperature
- spiral
- point
- annealing
- line
- 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
Images
Landscapes
- Reinforcement Elements For Buildings (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a spiral line shaping and annealing process, which comprises the following steps: (1) selecting materials, clamps and equipment; (2) determination of crystallization temperature point: firstly, placing the wound spiral line in an annealing fixture, selecting the initial annealing temperature to carry out annealing treatment in a hydrogen furnace or a vacuum furnace, keeping the initial annealing temperature for a certain time, taking out the spiral line to fold for a plurality of times, taking fracture as the basis of embrittlement, and then gradually cooling or heating to a certain temperature to confirm that the lowest embrittlement temperature point is the crystallization temperature point; (3) confirming a setting temperature point; (4) the set temperature profile was confirmed. The invention determines the specific shaping process of the spiral line according to the crystallization temperature point, and ensures that the pitch precision of the winding of the spiral line is not changed after the shaping treatment. The invention is applied to the shaping treatment of the spiral line in all the spiral line traveling wave tube manufacturing tubes, and is particularly suitable for the condition that the spiral line material is tungsten and molybdenum.
Description
Technical field
The invention belongs to microwave electrovacuum field, belong to especially this technical field of making of traveling wave tube slow-wave system.
Background technology
In microwave regime, travelling-wave tubes is by the best device of bandwidth and gain combination, wherein helix TWT is most widely used, and its high frequency circuit is generally a spiral line type wire or metal strip, by three or more multimedium bar cramp hold and be fixed in Can.Spiral line type basic role wiry provides a Propagation speed to approach electronic movement velocity and has the frequency electromagnetic waves of enough strong axial electric field, makes hertzian wave and beam coupling that signal is amplified.Wire is referred to as spiral-line, for high-frequency energy with and the carrier of beam energy exchange and high-frequency energy transmission, wire material is generally zonal structure, when the inner use of travelling-wave tubes, is spring-like, has certain internal-and external diameter and certain pitch.Spiral-line inside/outside diameter size is smaller, and external diameter determines by the thickness of band, and generally with the increase of the operating frequency trend that tapers off, and accuracy requirement is high, is the key part that affects travelling-wave tubes significant parameter.
Spiral-line material is generally refractory metal molybdenum, molybdenum materials is wound on core bar by special lathe, after finishing, coiling takes off core bar and spiral-line, then carry out follow-up thermal treatment, mechanical treatment and chemical treatment, in these follow-up processing, molybdenum materials is fixed on core bar always, pitch while keeping coiling is taken off core bar after processing finishes, and spiral-line is just made and finished.Spiral-line is after coiling, and in the turning point of coiling, the local deformaton of spiral-line amount is larger, causes certain viscous deformation.Viscous deformation makes the strength of materials increase on the one hand, causes workpiece to be shaped; Be subject on the other hand force intensity and character inconsistent everywhere, after being shaped, removing external force and still have restorable possibility, therefore need the high-temperature heat treatment that formalizes remove external force after shaping before.
Setting can make its inner elastic distortion decline, mutual restraining function between intergranule and crystal block has very large weakening, microcosmic internal stress obtains very large reduction, makes various mechanical propertys also obtain certain recovery, and the form of spiral-line is stablized like this.So helix winding finishes to pass through setting treatment.In the stylish also no appearance of crystal grain of the temperature spot of setting, when continuing to heat up, new crystal grain starts to occur, the recrystallize state of having arrived; Recrystallize can make spiral-line become fragile, and affects the use of spiral-line, and the temperature between recrystallize and setting does not have clear and definite boundary.The temperature spot of setting treatment need to repeatedly be done experiment and just can be determined, and spiral-line can be unlikely to again to become fragile by stable form, and the spiral-line of every batch need to redefine setting temperature; Therefore, in production, be difficult to find out the Tc point that spiral-line becomes fragile, the too high spiral-line material of setting temperature reaches ctystallizing point and easily becomes fragile, the too low object that does not reach setting of setting temperature, affect the use of spiral-line, after setting treatment, the pitch accuracy of coiling changes, and affects the quality of product.
Summary of the invention
For the deficiency existing in prior art, the present invention seeks to be to provide a kind of Tc point of being convenient to determine spiral-line, and confirm spiral-line setting temperature according to Tc point, reenact the spiral-line setting annealing process of concrete setting heating curve, meet the setting needs after helix winding, make spiral-line after setting treatment, the pitch accuracy of the coiling simultaneously spiral-line that do not change does not become fragile yet.
To achieve these goals, the present invention realizes by the following technical solutions:
Spiral-line setting annealing process of the present invention, it comprises the steps:
(1) selection material, fixture and equipment; According to the spiral-line material of concrete batch, concrete annealing device and concrete annealing fixture, by testing, determine the Tc point requiring, confirm selection material, fixture and equipment;
(2) determine Tc point; First the good spiral-line of coiling is placed in annealing fixture, select annealing temperature originally in hydrogen stove or vacuum oven, to carry out anneal, after selection annealing temperature insulation certain hour originally, take out spiral-line and carry out doubling plural number, to be fractured into the foundation becoming fragile, then cooling or intensification certain temperature confirm that the minimum temperature spot that becomes fragile is Tc point gradually;
(4) confirm setting temperature point; Determine after Tc point, reduce corresponding temperature and be setting temperature point;
(5) confirm setting temperature curve; According to after the setting temperature point of determining, determine setting annealing temperature curve, then, being not less than in 60 minutes according to certain heat-up rate to setting temperature point, on setting temperature point, be incubated the regular hour, then furnace cooling, has completed setting anneal.
Further, in above-mentioned steps (2), after spiral-line doubling plural number under the annealing temperature of originally selecting after anneal time, if spiral-line fracture, under the annealing temperature of originally selecting, 20 ℃ of anneal of every cooling are once, then whether the spiral-line after judgement is annealed again ruptures, and testing and determine the minimum temperature spot that becomes fragile is successively Tc point; If spiral-line does not rupture, under the annealing temperature of originally selecting, 20 ℃ of anneal of every intensification once, are then judging whether the spiral-line after annealing again ruptures, and testing and determine the minimum temperature spot that becomes fragile is successively Tc point;
Originally the annealing temperature of described anneal is chosen as 1050 ℃, and described insulation certain hour is 20 minutes; Described cooling or intensification certain temperature are 20 ℃.
Further, in above-mentioned steps (4), the corresponding temperature of described reduction is 50 ℃; When the temperature of Tc point, decline 50 ℃ for setting temperature point.
Further, in above-mentioned steps (5), described certain heat-up rate is 20 ℃ of each annealing, and the above-mentioned insulation regular hour is 20 minutes.
The present invention is by confirming concrete batch of Tc point that produces spiral-line, then according to Tc point, confirm spiral-line setting temperature, reenact concrete setting heating curve, meet the setting needs after helix winding, make spiral-line after setting treatment, the pitch accuracy of coiling does not change, and spiral-line does not become fragile yet simultaneously, the shape of having guaranteed spiral-line is not replied, is rebounded, and has guaranteed the precision of pitch; It should be applicable in the setting treatment of spiral-line in all helix TWT tubulations, is particularly useful in situation that spiral-line material is tungsten and molybdenum.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, describe the present invention in detail;
Schematic diagram during Fig. 1 spiral-line setting of the present invention fixture;
Fig. 2 spiral-line setting of the present invention heating curve schematic diagram.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Referring to Fig. 1, the present invention is to provide a kind of spiral-line setting annealing process, it is first the good spiral-line of coiling to be placed in annealing fixture, carries out anneal in hydrogen stove or vacuum oven, first according to annealing case, determines the Tc point of every batch of spiral-line under becoming fragile.Tc point is under concrete test annealing temperature, and spiral-line is carried out to doubling several times, whether is fractured into the foundation becoming fragile, and then determines that the minimum temperature spot that becomes fragile is Tc point.This Tc point, for corresponding concrete equipment, starting material, need re-start confirmation if wherein change.Determine after ctystallizing point, reduce corresponding temperature and be setting temperature point, then according to certain heat-up rate, on setting temperature point, be incubated the regular hour, according to certain cooling rate, completed setting anneal, guaranteed that spiral-line is after setting treatment, the pitch accuracy of coiling does not change.
Referring to Fig. 1 and Fig. 2, the spiral-line of certain material of take is example, illustrates that technical scheme implementation step of the present invention is as follows:
(1) selection material, fixture and equipment: according to the spiral-line material of concrete batch, concrete annealing device and concrete annealing fixture, need test and determine concrete Tc point, when one of them condition changes, confirmation be need re-start, thereby selection material, fixture and equipment confirmed according to Tc point.
(2) determine Tc point: after the spiral-line 1 that chooses material is wound on to core bar 2, be placed in annealing fixture 3, as shown in Figure 1, the spiral-line 1 of need annealing is inserted in the hole of upper cover 4 together with core bar 2, core bar 2 lower ends prop up lower cover 5, upper end relies on the edge in hole, its SMIS 2 bar band spiral-line 1 positions are put into completely in annealing fixture 3 and are carried out anneal, and the spiral-line quantity with core bar of test is generally 2; Originally annealing temperature is chosen as 1050 ℃, and spiral-line is incubated to 20 minutes at 1050 ℃ of certain temperatures, and after taking-up, doubling is 3 times repeatedly, and spiral-line fracture thinks at this temperature that spiral-line becomes fragile.
Then temperature is reduced to 20 ℃ and anneal again at 1030 ℃, confirm whether spiral-line becomes fragile; If also become fragile, continue to reduce by 20 ℃ of annealing temperatures, until determine the minimum temperature spot T1 that becomes fragile.
If do not become fragile at 1050 ℃ of temperature, improve successively 20 ℃ and carry out again this class test, finally determine minimum temperature point T1.
(3) confirm setting temperature point: setting temperature point is generally low than Tc point, according to test of many times checking, the best setting temperature point T in temperature spot position while drawing low 50 ℃.
(4) confirm setting temperature curve: according to after the setting temperature point T determining, grope the annealing temperature curve that formalizes, as shown in Figure 2, be raised to temperature T being not less than in 60 minutes, then at T temperature, be incubated 20 minutes, then furnace cooling.Cooling rear taking-up completes setting anneal.
In the present embodiment, the annealing temperature T of the spiral-line of general molybdenum is within the scope of 1020-1130 ℃, and setting temperature point T is lower 50 ℃ than definite Tc point T1.
Spiral-line of the present invention setting annealing process, mainly comprises confirmation and the setting temperature curve of Tc point.Tc point is in spiral-line setting treatment, the spiral-line situation that becomes fragile during minimum temperature, generally, according to the thickness of material, batch device-dependent that produces and specifically anneal, every batch of spiral-line material, each annealing device need re-start test and determine Tc point.
The present invention is by confirming concrete batch of Tc point that produces spiral-line, then according to Tc point, confirm spiral-line setting temperature, reenact concrete setting heating curve, meet the setting needs after helix winding, make spiral-line after setting treatment, the pitch accuracy of coiling does not change, and spiral-line does not become fragile yet simultaneously, the shape of having guaranteed spiral-line is not replied, is rebounded, and has guaranteed the precision of pitch; It should be applicable in the setting treatment of spiral-line in all helix TWT tubulations, is particularly useful in situation that spiral-line material is tungsten and molybdenum.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; the principle of the just explanation invention of describing in above-described embodiment and specification sheets; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (2)
1. spiral-line setting annealing process, it comprises the steps:
(1) selection material, fixture and equipment; According to the spiral-line material of concrete batch, concrete annealing device and concrete annealing fixture, by testing, determine the Tc point requiring, confirm selection material, fixture and equipment;
(2) determine Tc point; First the good spiral-line of coiling is placed in annealing fixture, select annealing temperature originally in hydrogen stove or vacuum oven, to carry out anneal, after selection annealing temperature insulation certain hour originally, take out spiral-line and carry out doubling plural number, to be fractured into the foundation becoming fragile, then cooling or intensification certain temperature confirm that the minimum temperature spot that becomes fragile is Tc point gradually;
(3) confirm setting temperature point; Determine after Tc point, reduce corresponding temperature and be setting temperature point;
(4) confirm setting temperature curve; According to after the setting temperature point of determining, determine setting annealing temperature curve, be then not less than in 60 minutes according to certain heat-up rate to setting temperature point, on setting temperature point, be incubated the regular hour, then furnace cooling, has completed setting anneal
In above-mentioned steps (2), after spiral-line doubling plural number under the annealing temperature of originally selecting after anneal time, if spiral-line fracture, under the annealing temperature of originally selecting, 20 ℃ of anneal of every cooling are once, and then judge whether the spiral-line after annealing again ruptures, and testing and determine the minimum temperature spot that becomes fragile is successively Tc point; If spiral-line does not rupture, under the annealing temperature of originally selecting 20 ℃ of anneal of every intensification once, and then judgement again the spiral-line after annealing whether rupture, testing and determine the minimum temperature spot that becomes fragile is successively Tc point; Originally the annealing temperature of described anneal is chosen as 1050 ℃, and described insulation certain hour is 20 minutes; Described cooling or intensification certain temperature are 20 ℃.
2. spiral-line setting annealing process according to claim 1, is characterized in that, in above-mentioned steps (3), the corresponding temperature of described reduction is 50 ℃; When the temperature of Tc point, decline 50 ℃ for setting temperature point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210076924.0A CN102605306B (en) | 2012-03-22 | 2012-03-22 | Spiral line shaping annealing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210076924.0A CN102605306B (en) | 2012-03-22 | 2012-03-22 | Spiral line shaping annealing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102605306A CN102605306A (en) | 2012-07-25 |
| CN102605306B true CN102605306B (en) | 2014-04-09 |
Family
ID=46523063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210076924.0A Active CN102605306B (en) | 2012-03-22 | 2012-03-22 | Spiral line shaping annealing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102605306B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145036B (en) * | 2017-12-11 | 2019-07-05 | 西北工业大学 | A kind of elongated travelling tube helical line coiling core bar tensioning apparatus |
| CN115232952B (en) * | 2022-06-17 | 2023-11-21 | 中国科学院空天信息创新研究院 | Preparation method of spiral line in high-frequency component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062515A (en) * | 2006-04-25 | 2007-10-31 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for manufacturing blade forging of heavy type combustion engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61257423A (en) * | 1985-05-08 | 1986-11-14 | Kobe Steel Ltd | Coil heating and cooling device for heat treatment furnace |
-
2012
- 2012-03-22 CN CN201210076924.0A patent/CN102605306B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062515A (en) * | 2006-04-25 | 2007-10-31 | 沈阳黎明航空发动机(集团)有限责任公司 | Method for manufacturing blade forging of heavy type combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102605306A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102605306B (en) | Spiral line shaping annealing process | |
| EP1435398B1 (en) | Tunsten wire, cathode heater, and filament for vibration service lamp | |
| CN104451071A (en) | Heat treatment method for low-loss and medium and high-frequency iron-based nanocrystalline transformer iron cores | |
| CN105742204B (en) | Heater for plasma treatment appts | |
| CN101770920A (en) | Millimeter wave band traveling wave tube output window and manufacturing method thereof | |
| CN101993986A (en) | Heat treatment method and device of amorphous alloy cores | |
| CN105057826A (en) | Vacuum brazing method for radio fuze antenna radiator | |
| US2948954A (en) | Small sized helixes and method of their fabrication | |
| JP4426904B2 (en) | Tungsten wire and method for manufacturing the same | |
| CN101428856B (en) | Process for producing silver tantalate niobate nano-powder | |
| US2845690A (en) | Electrical components and methods | |
| CN101882504B (en) | Anisotropic rare-earth magnet light wave microwave sintering method | |
| CN202502975U (en) | Fixture for purifying and annealing spiral lines | |
| CN104475621A (en) | Multi-layer wave spring winding device and winding method | |
| CN202796835U (en) | Helix setting annealing clamp | |
| EP2337060B1 (en) | Electrode structures for discharge lamps | |
| CN101694825A (en) | Method for processing tungsten helical line of millimeter wave traveling-wave tube | |
| CN103071688A (en) | Novel wire drawing process for enameled wire copper conductor | |
| CN105222599A (en) | A kind of microwave, electric hybrid heating device | |
| CN102677142B (en) | Electrochemical polishing method for helix of traveling wave tube | |
| CN101281848A (en) | Method and apparatus for eliminating high power case-shaped output window ghost mode | |
| CN205066474U (en) | Microwave, electric hybrid heating device | |
| CN107393788B (en) | Heater structure and preparation method thereof | |
| CN105314830A (en) | Production method of glass preform | |
| JP6784123B2 (en) | Manufacturing method and manufacturing equipment for glass base material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 241002 Huaxia science and Technology Park, hi tech Development Zone, Yijiang District, Wuhu, Anhui Patentee after: ANHUI HUADONG PHOTOELECTRIC TECHNOLOGY INSTITUTE Co.,Ltd. Address before: 241002 Huaxia science and Technology Park, hi tech Development Zone, Yijiang District, Wuhu, Anhui Patentee before: Anhui Huadong Polytechnic Institute |
|
| CP01 | Change in the name or title of a patent holder |