KR910005814B1 - Manufacturing method of a cathode of electron gun in crt - Google Patents
Manufacturing method of a cathode of electron gun in crt Download PDFInfo
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- KR910005814B1 KR910005814B1 KR1019890008603A KR890008603A KR910005814B1 KR 910005814 B1 KR910005814 B1 KR 910005814B1 KR 1019890008603 A KR1019890008603 A KR 1019890008603A KR 890008603 A KR890008603 A KR 890008603A KR 910005814 B1 KR910005814 B1 KR 910005814B1
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- South Korea
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- cathode
- base metal
- sleeve
- electron gun
- blackening
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/08—Manufacture of heaters for indirectly-heated cathodes
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
제1도는 일반적인 캐소오드의 단면도.1 is a cross-sectional view of a typical cathode.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 베이스메탈 2 : 슬리이브1: Base metal 2: Sleeve
3 : 지지관 4 : 히이터3: support tube 4: heater
5 : 음극물질5: cathode material
본 발명은 음극선관용 전자총의 캐소오드 제조방법에 관한 것으로서, 특히 음극물질의 수명저하를 야기시키는 베이스메탈 표면의 중간저항층을 제거하여 캐소오드의 수명을 연장시킬 수 있는 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a cathode of an electron gun for a cathode ray tube, and more particularly to a method for extending the life of the cathode by removing the intermediate resistance layer on the surface of the base metal causing the life of the cathode material.
일반적인 음극선관용 전자총의 캐소오드 구조체는 제1도에 도시된 바와 같은 형태를 갖는데, 히이터(4)가 내장되는 것으로 니켈(Ni)과 크롬(Cr)을 주성분으로 하는 슬리이브(2)와 그 표면에 산화물 음극물질(5)이 도포되는 것으로 미량의 마그네슘(Mg)이 합금된 고순도 니켈(Ni)을 주재로 하는 베이스메탈(1)과 상기 슬리이브를 지지하는 지지관(3)으로 구성된다. 이러한 캐소오드구조체는 하나의 결합체로서 조립된 후 베이스메탈(1)에 음극물질(5)이 도포되기 전에 열처리 공정을 거치게 되는데, 습한 H2분위기나 건조한 H2분위기하에서 900℃ 이상의 고열로서 가열되는 것이다.The cathode structure of a typical cathode ray tube electron gun has a shape as shown in FIG. 1, in which a heater 4 is incorporated, and a sleeve 2 mainly containing nickel (Ni) and chromium (Cr) and its surface. It is composed of a base metal (1) mainly composed of high purity nickel (Ni) alloyed with a small amount of magnesium (Mg) and a support tube (3) for supporting the sleeve. The cathode structure is assembled as a single body and then subjected to a heat treatment process before the
만일에 상기 캐소오드 구조체가 습한 H2분위기에서 열처리되면 슬리이브(2)의 표면에 Cr2O3산화물에 의한 흑화층이 형성되는데 이는 베이스메탈(1) 표면에도 부착되게 된다. 이에 의하면 후에 도포되는 음극물질(5)과 베이스메탈(1) 사이에 중간 저항층을 형성하여 열전자의 방출이 저해되며, 결과적으로 캐소오드의 수명이 단축된다.If the cathode structure is heat-treated in a humid H 2 atmosphere, a blackening layer made of Cr 2 O 3 oxide is formed on the surface of the sleeve 2, which is attached to the surface of the
그러나 상기 캐소오드 구조체가 건조한 H2분위기하에서 열처리되면 상기한 중간저항층은 형성되지 않으나, 슬리이브가 광택을 지니기 때문에 복사열 흡수가 미흡하여 열전자의 방출이 늦어지는 문제점이 생긴다.However, when the cathode structure is heat-treated in a dry H 2 atmosphere, the intermediate resistance layer is not formed. However, since the sleeve is glossy, radiant heat absorption is insufficient, resulting in delayed release of hot electrons.
본 발명은 히이터로부터의 복사열을 충분히 흡수할 수 있도록 하여 열전자 방출시간을 앞당길 수 있으며, 중간 저항층의 제거로 지속적인 열전자의 방출을 가능케 하여 음극물질의 수명을 연장시킬 수 있는 음극선관용 전자총의 캐소오드 구조체 제조방법을 제공함에 그 목적이 있다.The present invention is able to absorb the radiant heat from the heater sufficiently to accelerate the hot electron emission time, and the cathode of the cathode ray tube electron gun that can extend the life of the cathode material by enabling the continuous release of hot electrons by removing the intermediate resistance layer Its purpose is to provide a method for manufacturing a structure.
상기의 목적을 달성하기 위하여 본 발명은, 음극선관용 전자총의 캐소오드 구조체를 제조하는 방법에 있어서, 베이스메탈이 결합된 슬리이브를 습식의 수소분위기하에서 열처리하는 흑화공정과, 흑화처리된 상기 베이스메탈-슬리이브 결합체중 상기 베이스메탈의 표면을 에칭하여 중간저항층을 형성하는 Cr2O3와 그의 노폐물을 제거하는 에칭공정과, 표면의 산화물이 제거된 베이스메탈의 표면에 음극물질을 도포하는 도포공정을 포함하도록 하는 점에 그 특징이 있다.In order to achieve the above object, the present invention, in the method for producing a cathode structure of the cathode ray tube electron gun, the blackening step of heat-treating the sleeve in which the base metal is bonded under a wet hydrogen atmosphere, and the blackening treatment the base metal An etching process of removing Cr 2 O 3 and wastes thereof, which forms an intermediate resistance layer by etching the surface of the base metal in the sleeve assembly, and applying an anode material to the surface of the base metal from which oxides on the surface are removed; Its feature is that it includes a process.
이하 본 발명 제조방법을 더욱 상세히 설명한다.Hereinafter, the manufacturing method of the present invention will be described in more detail.
통상의 작업공정을 통하여 슬리이브와 베이스메탈을 가공하여 이들을 결합고정한다. 그리고 이 결합체를 습한 H2분위기하에서 약 950℃로 열처리를 하여 슬리이브의 표면에 슬리이브의 함유 금속성분중 크롬성분이 산소와 결합하여 된 Cr2O3와 피막층이 형성되도록 한다.The sleeve and base metal are machined and fixed in the usual working process. The binder is then heat-treated at about 950 ° C. under a humid H 2 atmosphere to form a Cr 2 O 3 and a coating layer formed by combining chromium in the metal component of the sleeve with oxygen on the surface of the sleeve.
이어서 통상의 에칭약제로서 상기 베이스메탈의 표면을 에칭한다. 이때의 에칭약제로서는 상기 베이스메탈 표면으로부터 Cr2O3의 박막층을 박리하여 낼 수 있는 것을 사용한다. 그리고 통상의 스프레이 방법으로 상기 베이스메탈의 표면에 음극물질인 탄산염을 도포한다.Subsequently, the surface of the base metal is etched with a conventional etching agent. As the etching agent at this time, one which can peel off a thin film layer of Cr 2 O 3 from the surface of the base metal is used. And the carbonate which is a cathode material is apply | coated to the surface of the said base metal by a conventional spraying method.
이와 같은 공정들을 통하여서 일단은 음극물질의 도포가 완료가 되는데, 본 발명에 의한 캐소오드 구조체에 있어서 히이터가 내장되며 그 상단에 베이스메탈이 고정되는 슬리이브는 습식수소 분위기하에서의 열처리에 의해 흑화되므로 히이터로부터의 복사열 흡수가 용이하여, 음극물질이 조속히 가열된다. 따라서 열전자가 방출되기 시작하는데 베이스메탈에 함유된 환원제인 마그네슘원자가 베이스메탈 표면으로 확산되면서 Ba, Cr, Sr등의 유리원자를 생성시키기 때문이다. 이때에 본 발명에 의하면 베이스메탈 표면에 슬리이브를 흑화시키면서 부착되었던 노폐물, 특히 중간저항층을 형성하는 Cr2O3가 제거된 상태기 때문에 유리원자의 생성이 방해되지 않는다.Through such processes, coating of the cathode material is completed at one end. In the cathode structure according to the present invention, a heater is built in and a sleeve in which a base metal is fixed at the top is blackened by heat treatment under a wet hydrogen atmosphere. It is easy to absorb radiant heat from the cathode, and the negative electrode material is heated quickly. Therefore, the hot electrons are released, because magnesium atoms, the reducing agents contained in the base metal, diffuse to the surface of the base metal to generate free atoms such as Ba, Cr, and Sr. In this case, according to the present invention, since the wastes attached to the base metal surface while blackening the sleeve, in particular, Cr 2 O 3 forming the intermediate resistance layer are removed, the generation of glass atoms is not disturbed.
즉 본 발명은 슬리이브를 흑화시켜 복사열의 흡수를 충분히 할 수 있도록 하여 열전자의 방출을 앞당기며, 열전자의 방출을 저해하는 중간저항층의 제거로 지속적인 열전자의 방출을 가능케 하는 것이다.That is, according to the present invention, the sleeve is made black so as to sufficiently absorb the radiant heat, thereby facilitating the release of hot electrons, and enabling the continuous release of hot electrons by removing the intermediate resistance layer that inhibits the release of hot electrons.
결과적으로 음극선관의 출화시간을 앞당겨 제품의 품질을 향상시키며 캐소오드의 장수명화로 제품의 내구성을 향상시킬 수 있는 방법인 것이다.As a result, it is possible to improve the product quality by advancing the firing time of the cathode ray tube and to improve the durability of the product by the long life of the cathode.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890008603A KR910005814B1 (en) | 1989-06-21 | 1989-06-21 | Manufacturing method of a cathode of electron gun in crt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890008603A KR910005814B1 (en) | 1989-06-21 | 1989-06-21 | Manufacturing method of a cathode of electron gun in crt |
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| Publication Number | Publication Date |
|---|---|
| KR910001840A KR910001840A (en) | 1991-01-31 |
| KR910005814B1 true KR910005814B1 (en) | 1991-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019890008603A KR910005814B1 (en) | 1989-06-21 | 1989-06-21 | Manufacturing method of a cathode of electron gun in crt |
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| KR (1) | KR910005814B1 (en) |
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1989
- 1989-06-21 KR KR1019890008603A patent/KR910005814B1/en not_active IP Right Cessation
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| KR910001840A (en) | 1991-01-31 |
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