CN101944466B - Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube - Google Patents
Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube Download PDFInfo
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- CN101944466B CN101944466B CN2010102464267A CN201010246426A CN101944466B CN 101944466 B CN101944466 B CN 101944466B CN 2010102464267 A CN2010102464267 A CN 2010102464267A CN 201010246426 A CN201010246426 A CN 201010246426A CN 101944466 B CN101944466 B CN 101944466B
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- tube
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Abstract
The invention discloses a method for manufacturing an elastic tube shell of a slow-wave system of a traveling wave tube. The method comprises the followings steps of: softening treatment, mechanical spinning, machining and hardening treatment. The tube shell manufactured by the method has the advantages of good elasticity, high strength and easy processing, and the hardened tube shell can be purified in a hydrogen furnace or vacuum furnace.
Description
Technical field
The invention belongs to the microwave electron tube and make the field, be specifically related to a kind of manufacturing approach that is used for the traveling wave tube slow-wave system shell.
Background technology
Modal in the travelling wave tube is helix TWT; The critical piece of its HFS is a slow wave structure, and the shell of slow wave structure outside requires to have vacuum leakproofness, and shell inside/outside diameter size and concentricity all have very high required precision; General tolerance is in 0.01mm; Shell also has elongated characteristics simultaneously, and promptly diameter is little, length is long, generally adopts the processing of spinning means.The clamping of the slow wave structure in the helix TWT is adopted as the assembly method of suppressing mostly; Being about to have certain flexible shell utilizes anchor clamps to suppress distortion; Then supporting rod and helix together being put into shell suppresses and becomes big zone; Unclamp anchor clamps then, the resilience of rubber-like shell is tightened up supporting rod and helix is clamped like this, thereby the slow wave system sound construction is fixed.Here the amount of suppressing is big more, and the slow wave system clamping is tight more, helps the heat radiation of slow wave system.The general bigger travelling wave tube of power output, require slow wave system suppress structure to suppress quantitative change big, the heat in the slow wave system is loose, avoid helix temperature in the slow wave system too high and damage.The elasticity of shell and the intensity of material have relation; The big good springiness of intensity but be difficult for processing, the easy processing that intensity is little but elasticity is little, the shell after the general using work hardening can not advance hydrogen stove or vacuum furnace again and carry out purified treatment; If carry out purified treatment; Elasticity has weakened again, and it is not thorough that purified treatment shell surfaces externally and internally does not utilize conventional chemical cleaning removal, influences the inner cleanliness factor of travelling wave tube.
Summary of the invention
Deficiency to above-mentioned prior art; The present invention provides a kind of manufacturing approach that is used for traveling wave tube slow-wave system elasticity shell, the shell good springiness that uses this manufacturing approach to process, and intensity is big; Be easy to processing, and can advance the hydrogen stove after the work hardening or vacuum furnace carries out purified treatment.
The technical scheme that the present invention solves the prior art problem is:
A kind of manufacturing approach that is used for traveling wave tube slow-wave system elasticity shell may further comprise the steps:
A. clean the shell blank, then in the softening processing of hydrogen furnace annealing;
B. the shell blank after will annealing carries out mechanical spinning, Vehicle Processing then;
C. the shell blank after cleaning Vehicle is processed is put into the hydrogen stove with the shell blank then or vacuum furnace carries out cure process.
Said shell material is elastic alloy 3J1; The annealing softening treatment process is in the said steps A: hydrogen stove programming rate is no more than 20 ℃/min, is warming up to 980 ± 25 ℃, more than the insulation 15min, cools off with stove then; Hardening process is among the said step C: hydrogen stove or vacuum furnace programming rate are not less than 30 ℃/min, are warming up to 750 ± 25 ℃, more than the insulation 4h, cool off with stove then.
Characteristics of the present invention: the surface smoothness of the softening processing of shell hair back machining is good; Have high elasticity, deflection is 2-3 a times that conventional method is made the shell deflection; High through shell cleanliness factor after the heat treatment of cure process; The slow wave system of using this shell to make, excellent radiation performance can be applicable in the travelling wave tube below the power output 200W.
Embodiment
Embodiment 1
A kind of manufacturing approach that is used for traveling wave tube slow-wave system elasticity shell may further comprise the steps:
A. clean the shell blank, then in the softening processing of hydrogen furnace annealing;
B. the shell blank after will annealing carries out mechanical spinning, Vehicle Processing then;
C. the shell blank after the cleaning Vehicle processing is put into the hydrogen stove with the shell blank then and is carried out cure process.
Shell material selection elastic alloy 3J1; The annealing softening treatment process is in the steps A: 20 ℃/min of hydrogen stove programming rate, be warming up to 1000 ℃, and insulation 15min cools off with stove then; Hardening process is among the step C: 30 ℃/min of hydrogen stove programming rate, be warming up to 775 ℃, and insulation 4h cools off with stove then.
Embodiment 2
A kind of manufacturing approach that is used for traveling wave tube slow-wave system elasticity shell may further comprise the steps:
A. clean the shell blank, then in the softening processing of hydrogen furnace annealing;
B. the shell blank after will annealing carries out mechanical spinning, Vehicle Processing then;
C. the shell blank after the cleaning Vehicle processing is put into vacuum furnace with the shell blank then and is carried out cure process.Shell material selection elastic alloy 3J1; The annealing softening treatment process is in the steps A: 10 ℃/min of hydrogen stove programming rate, be warming up to 960 ℃, and insulation 30min cools off with stove then; Hardening process is among the step C: 40 ℃/min of vacuum furnace programming rate, be warming up to 725 ℃, and insulation 6h cools off with stove then.
Claims (1)
1. manufacturing approach that is used for traveling wave tube slow-wave system elasticity shell may further comprise the steps:
A. clean the shell blank, then in the softening processing of hydrogen furnace annealing;
B. the shell blank after will annealing carries out mechanical spinning;
C. clean the shell blank behind the spinning, then the shell blank is put into the hydrogen stove or vacuum furnace carries out cure process;
The annealing softening treatment process is in the said steps A: hydrogen stove programming rate is no more than 20 ℃/min, is warming up to 980 ± 25 ℃, more than the insulation 15min, cools off with stove then;
Hardening process is among the said step C: hydrogen stove or vacuum furnace programming rate are not less than 30 ℃/min, are warming up to 750 ± 25 ℃, more than the insulation 4h, cool off with stove then;
Said shell material is elastic alloy 3J1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102464267A CN101944466B (en) | 2010-07-30 | 2010-07-30 | Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102464267A CN101944466B (en) | 2010-07-30 | 2010-07-30 | Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101944466A CN101944466A (en) | 2011-01-12 |
| CN101944466B true CN101944466B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102464267A Expired - Fee Related CN101944466B (en) | 2010-07-30 | 2010-07-30 | Method for manufacturing elastic tube shell of slow-wave system of traveling wave tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101944466B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501032B (en) * | 2011-12-02 | 2014-01-08 | 安徽华东光电技术研究所 | Manufacturing process of positioning elastic sheet of traveling wave tube electron gun system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964633A (en) * | 1997-12-15 | 1999-10-12 | Hughes Electronics Corporation | Method of heat shrink assembly of traveling wave tube |
| CN1571096A (en) * | 2003-07-21 | 2005-01-26 | 中国科学院电子学研究所 | Combined extrusion method using transition cellpacking to realize helical slow-wave structure |
| CN1681070A (en) * | 2004-04-09 | 2005-10-12 | 中国科学院电子学研究所 | Composite casing of travelling-wave tube |
| CN101615545A (en) * | 2009-08-04 | 2009-12-30 | 安徽华东光电技术研究所 | A kind of manufacture method of tube shell of traveling wave tube |
-
2010
- 2010-07-30 CN CN2010102464267A patent/CN101944466B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964633A (en) * | 1997-12-15 | 1999-10-12 | Hughes Electronics Corporation | Method of heat shrink assembly of traveling wave tube |
| CN1571096A (en) * | 2003-07-21 | 2005-01-26 | 中国科学院电子学研究所 | Combined extrusion method using transition cellpacking to realize helical slow-wave structure |
| CN1681070A (en) * | 2004-04-09 | 2005-10-12 | 中国科学院电子学研究所 | Composite casing of travelling-wave tube |
| CN101615545A (en) * | 2009-08-04 | 2009-12-30 | 安徽华东光电技术研究所 | A kind of manufacture method of tube shell of traveling wave tube |
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| CN101944466A (en) | 2011-01-12 |
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Granted publication date: 20120425 Termination date: 20180730 |