CN101877931B - Method for preparing non-inductive filament - Google Patents

Method for preparing non-inductive filament Download PDF

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Publication number
CN101877931B
CN101877931B CN2009102124898A CN200910212489A CN101877931B CN 101877931 B CN101877931 B CN 101877931B CN 2009102124898 A CN2009102124898 A CN 2009102124898A CN 200910212489 A CN200910212489 A CN 200910212489A CN 101877931 B CN101877931 B CN 101877931B
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CN
China
Prior art keywords
alloy wire
rhenium alloy
filament
tungsten
non
Prior art date
Application number
CN2009102124898A
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Chinese (zh)
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CN101877931A (en
Inventor
侯俊山
俞江
李健辉
Original Assignee
江苏达胜加速器制造有限公司
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Priority to CN2009102124898A priority Critical patent/CN101877931B/en
Publication of CN101877931A publication Critical patent/CN101877931A/en
Application granted granted Critical
Publication of CN101877931B publication Critical patent/CN101877931B/en

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Abstract

The invention relates to a method for preparing a filament, in particular to a method for preparing a non-inductive filament. The method comprises the following steps of: placing the centre of a tungsten-rhenium alloy wire segment on a positioning mold, continuously heating the tungsten-rhenium alloy wire segment over flame and reversely folding the tungsten-rhenium alloy wire segment into an inwards curled S shape, and continuously heating the inwards curled tungsten-rhenium alloy wire segment in an outward curling mold through flame for baking to outwards curl the tungsten-rhenium alloy wire segment; after outward curling and baking, fixing the tungsten-rhenium alloy wire segment on a positioning frame and continuously heating the tungsten-rhenium alloy wire segment over the flame to form three sequent elbows; and finally, shaping the tungsten-rhenium alloy wire segment molded on a shaping mold at the high temperature of a hydrogen furnace or a vacuum furnace to finish the manufacturing of the non-inductive filament. The method has the advantages of enhancing the plasticity of the material by continuously heating the wire segment at a rational temperature during the manufacturing of the non-inductive filament and guaranteeing the molding rate of the filament by using the mold for shaping during the manufacturing of the filament.

Description

A kind of preparation method of non-inductive filament

Technical field

The present invention relates to a kind of manufacture method of filament, relate in particular to a kind of preparation method of non-inductive filament.

Background technology

In the prior art, dynamitron is to adopt high tungsten of fusing point and alloy filament winding system filament thereof, and negative electrode is the electron optics emission source, its footpath ¢ 0.7mm and ¢ 0.8mm etc., and surface of emission diameter is all at ¢ 7mm and ¢ 8mm.Because it has high rigidity, high recrystallization temperature, the low excellent properties that waits of high thermoelectric potential value and low evaporation work function is first-selected silk material; Yet it is also given on coiling, the manufacture technology and brings many difficulties, and especially S turning 90 degree commentaries on classics pin work in-processes are big because of hardness, poor plasticity; Very easily splitting in the technology, damaged and scrapping is when fabrication and processing; If control bad proper temperature and time, will cause filament distortion embrittlement when making; Meanwhile, also can't satisfy the required different geometrical size of various device.

Summary of the invention

The technical problem that solves:

It is big by its material hardness in the preparation process that the preparation method who the invention provides a kind of non-inductive filament has solved above-mentioned described non-inductive filament, problem such as the poor plasticity manufacture difficulty is big.

The present invention adopts following technical scheme technical solution problem:

A kind of preparation method of non-inductive filament may further comprise the steps:

1), one section tungsten rhenium alloy wire section got its center be placed on the jig, with flame continuously heating and in the opposite direction doubling be involute S shape, flame temperature is 400-500 ℃;

2), will be placed on the tungsten rhenium alloy wire of rolling well in the outer volume mould with flame continuously heating fire outer volume, flame temperature is 400-500 ℃;

3), being fixed on the locating rack of tungsten rhenium alloy wire that will accomplish the outer system of reeling, making three place's clubfoots, 90 degree in succession according on the locating rack, are heated with flame continuously in extension, tungsten rhenium alloy wire two ends, flame temperature is 400-500 ℃;

4), with the high temperature of hydrogen stove or vacuum furnace to after finalizing the design at the tungsten rhenium alloy wire of moulding on the formers, promptly accomplish the making of this non-inductive filament.

The preparation method of non-inductive filament of the present invention, the above-mentioned the 1st) before the step earlier with the tungsten rhenium alloy wire removal aquadag of polishing

The preparation method of non-inductive filament of the present invention, the above-mentioned the 4th) use 1400 ℃ of-1500 ℃ of heating in the step.

Beneficial effect

The present invention utilizes rational temperature to heat continuously and make that material is plastic and be enhanced making non-inductive filament; Utilize mould shaping to guarantee the filament ratio of briquetting at the making filament; In manufacturing process, use the flame heat of 400-500 degree; This temperature section has been avoided the processing filament because the low excessively filament surface of causing of temperature forms oxide layer, forms tungstic acid; The filament that temperature is too high to be forms crystallization, filament embrittlement; Make filament and adopt specific mould to carry out the simple difficulty of processing reduction of processing structure, the quality of non-inductive filament is improved.

Description of drawings

Fig. 1 is the involute sketch map of non-inductive filament coiling of the present invention;

Fig. 2 rolls up sketch map outward for non-inductive filament coiling of the present invention;

Fig. 3 is that non-inductive filament of the present invention is made the clubfoot sketch map;

Fig. 4 is a non-inductive filament moulding vertical view of the present invention;

Fig. 5 for moulding non-inductive filament of the present invention at the shaper sketch map of finalizing the design;

1 is that tungsten rhenium alloy wire, 2 is that involute mould, 3 is that locating rack, 5 is a shaper for rolling up mould, 4 outward among the figure, and 6 is non-inductive filament.

Embodiment

Below in conjunction with description of drawings to the invention further explain:

The preparation method of non-inductive filament may further comprise the steps:

1), tungsten rhenium alloy wire is polished the aquadag in the removal tungsten rhenium alloy wire with one section;

2), as shown in Figure 1, the tungsten rhenium alloy wire 1 that polishing is good is placed on the involute mould 2, with 400 ℃-500 ℃ flames continuously heating also in the opposite direction doubling be involute S shape;

3), as shown in Figure 2, the tungsten rhenium alloy wire 1 that doubling is involute S shape be placed in the outer volume mould 3 with 400 ℃-500 ℃ flame continuously heating fire outer the volume;

4), as shown in Figure 3, be fixed on the locating rack 4 accomplishing the tungsten rhenium alloy wire 1 that outer volume fires, extension, tungsten rhenium alloy wire 1 two ends is installed on the locating rack 4, heat the making clubfoot continuously with 400 ℃-500 ℃ flames; Three places are bent into 90 degree in succession; Promptly form non-inductive filament after removing locating rack 4, be the schematic top plan view of this non-inductive filament 6 as shown in Figure 4;

5) check is proofreaied and correct and is rubbed the terminal pin of non-inductive filament 6 and checks whether meet installation requirement; Keep the surface of emission at Φ 7-Φ 8mm, require inspection to lay out whether splitting of non-inductive filament 6 with the perpendicular clubfoot centre distance of the surface of emission, whether shape, physical dimension meet drawing requirement, and suitably proofread and correct;

6), as shown in Figure 5; The two ends angle of strike that detects good non-inductive filament 6 is plugged on put into 1400 ℃-1500 ℃ of high temperature hydrogen stove or vacuum furnaces in the location hole of shaper 5 high temperature to after finalizing the design at the non-inductive filament 6 of moulding on the shaping mould 5, promptly accomplish the making of this non-inductive filament 6.

Claims (3)

1. the preparation method of a non-inductive filament is characterized in that: may further comprise the steps:
1), one section tungsten rhenium alloy wire section got its center be placed on the jig, with flame continuously heating and in the opposite direction doubling be involute S shape, flame temperature is 400-500 ℃;
2), will be placed on the tungsten rhenium alloy wire of rolling well in the outer volume mould with flame continuously heating fire outer volume, flame temperature is 400-500 ℃;
3), being fixed on the locating rack of tungsten rhenium alloy wire that will accomplish the outer system of reeling, making three place's clubfoots, 90 degree in succession according on the locating rack, are heated with flame continuously in extension, tungsten rhenium alloy wire two ends, flame temperature is 400-500 ℃;
4), with the high temperature of hydrogen stove or vacuum furnace to after finalizing the design at the tungsten rhenium alloy wire of moulding on the formers, promptly accomplish the making of this non-inductive filament.
2. the preparation method of non-inductive filament according to claim 1 is characterized in that: the above-mentioned the 1st) before the step earlier with the tungsten rhenium alloy wire removal aquadag of polishing.
3. the preparation method of non-inductive filament according to claim 1 and 2 is characterized in that: the above-mentioned the 4th) use 1400 ℃ of-1500 ℃ of heating in the step.
CN2009102124898A 2009-11-12 2009-11-12 Method for preparing non-inductive filament CN101877931B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009102124898A CN101877931B (en) 2009-11-12 2009-11-12 Method for preparing non-inductive filament

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009102124898A CN101877931B (en) 2009-11-12 2009-11-12 Method for preparing non-inductive filament

Publications (2)

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CN101877931A CN101877931A (en) 2010-11-03
CN101877931B true CN101877931B (en) 2012-07-18

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103247500A (en) * 2013-04-28 2013-08-14 江苏达胜加速器制造有限公司 Filament for electron gun
CN103706732B (en) * 2013-12-30 2015-12-30 锦州华光电子管有限公司 Broken line type filament cold machining molding process

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1194718A (en) * 1996-05-21 1998-09-30 株式会社东芝 Cathod body structure, electron gun body structure, electronic tube, lamp filament and method for manufacturing cothode body structure and electronic gun body structure
US5898177A (en) * 1996-08-08 1999-04-27 Hitachi, Ltd. Electron microscope
US6066019A (en) * 1998-12-07 2000-05-23 General Electric Company Recrystallized cathode filament and recrystallization method
CN101083202A (en) * 2006-06-01 2007-12-05 厦门虹鹭钨钼工业有限公司 Halogen filament and process for manufacturing the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1194718A (en) * 1996-05-21 1998-09-30 株式会社东芝 Cathod body structure, electron gun body structure, electronic tube, lamp filament and method for manufacturing cothode body structure and electronic gun body structure
US5898177A (en) * 1996-08-08 1999-04-27 Hitachi, Ltd. Electron microscope
US6066019A (en) * 1998-12-07 2000-05-23 General Electric Company Recrystallized cathode filament and recrystallization method
CN101083202A (en) * 2006-06-01 2007-12-05 厦门虹鹭钨钼工业有限公司 Halogen filament and process for manufacturing the same

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Address after: 215214 Wujiang City, Jiangsu province FenHu Beishe Community Road No. 1288.

Patentee after: CGN DASHENG ELECTRON ACCELERATOR TECHNOLOGY CO., LTD.

Address before: 215214 Wujiang City, Jiangsu province FenHu Beishe Community Road No. 1288.

Patentee before: Jiangsu Dasheng Accelerator Manufacturing Co., Ltd.

C56 Change in the name or address of the patentee