KR910003168B1 - Method of making stem of bar-type tungsten electrode - Google Patents

Method of making stem of bar-type tungsten electrode Download PDF

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Publication number
KR910003168B1
KR910003168B1 KR1019880013984A KR880013984A KR910003168B1 KR 910003168 B1 KR910003168 B1 KR 910003168B1 KR 1019880013984 A KR1019880013984 A KR 1019880013984A KR 880013984 A KR880013984 A KR 880013984A KR 910003168 B1 KR910003168 B1 KR 910003168B1
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South Korea
Prior art keywords
tungsten electrode
electrode
chuck
quartz tube
intermediate glass
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KR1019880013984A
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Korean (ko)
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KR900007044A (en
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김동하
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삼성전관 주식회사
김정배
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors

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  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

The method for manufacturing tungsten for electrode, comprises the process steps of; joining a middle glass (5) on an end of quartz tube (3) fixed to the chuck (2) of the first rotary machine; providing a inert gas through a center hole (1) of chuck (2') by rotating the tungsten electrode (6) fixed to the second rotary machine chuck (2') in opposite to the first rotary machine; controlling the thickness of sticked middle glass by graphite heating (7). The electrode has advantagbe of good radiating property with oxidation prevented.

Description

봉상 텅스텐 전극의 스템 제조방법Method for manufacturing stem of rod-shaped tungsten electrode

제1도는 본 발명의 제1공정도로서, 벌브의 일측단에 중간유리를 용착시키는 것을 나타내는 도면.1 is a first process drawing of the present invention, showing that the intermediate glass is welded to one end of the bulb.

제2도는 본 발명의 제2공정도로서, 텅스텐 전극에 중간유리를 용착시키는 것을 나타내는 도면.FIG. 2 is a second process diagram of the present invention showing welding of intermediate glass to a tungsten electrode. FIG.

제3도는 본 발명에 의해 제조된 텅스텐 전극의 스템을 나타내는 도면.3 shows a stem of a tungsten electrode made by the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

2 : 제1회전 기구의 척 2' : 제2회전 기구의 척2: Chuck of first rotating mechanism 2 ': Chuck of second rotating mechanism

3 : 석영관 5 : 중간유리3: quartz tube 5: intermediate glass

6 : 텅스텐전극 7 : 흑연처구6: tungsten electrode 7: graphite target

본 발명은 봉상 텅스텐 전극의 스템 제조방법에 관한 것이다.The present invention relates to a method for producing a stem of a rod-shaped tungsten electrode.

일반적으로 수냉식 초고압 수은등은 발광관 내부의 온도가 초고온 상태를 유지하게 됨에 따라 이러한 상태에서 견디어 낼 수 있는 봉상의 텅스텐 전극을 사용하며, 발광관으로서는 석영관을 주로 사용한다.In general, the water-cooled ultra-high pressure mercury lamp uses a rod-shaped tungsten electrode that can withstand such a state as the temperature inside the light emitting tube maintains an extremely high temperature, and a quartz tube is mainly used as the light emitting tube.

이러한 봉상의 텅스텐 전극을 석영관에 봉착시키기 위하여서는 석영관 텅스텐의 중간 정도의 열팽창 계수를 갖는 중간유리를 필요로 하게 된다.In order to seal such a rod-shaped tungsten electrode in a quartz tube, an intermediate glass having a moderate thermal expansion coefficient of quartz tube tungsten is required.

이는 석영관 텅스텐을 직접 봉착시키게 되는 경우, 이 상호 두물질간에는 열팽창계수의 차이로 인하여 석영관에 균열이 발생하기 때문이다.This is because when the quartz tube tungsten is directly sealed, cracks occur in the quartz tube due to the difference in coefficient of thermal expansion between the two materials.

따라서 전극봉착을 위한 텅스텐 전극의 스템을 제조하게 되는데, 종래에는 전극의 산화를 방지하기 위하여 전극에 흑연막을 도포한 후 중간 유리를 용착시키는 방법으로 스템을 제조하거나, 전기 영동법에 의하여 중간 유리 분말을 텅스텐 전극에 고르게 입힌 후 유리분말을 가열하여 유라화 하는 방법으로 스템을 제조하였다.Therefore, a stem of a tungsten electrode for electrode sealing is manufactured. In the related art, in order to prevent oxidation of the electrode, a stem is manufactured by applying a graphite film to the electrode and then welding the intermediate glass, or by applying electrophoresis to the intermediate glass powder. After the uniform coating on the tungsten electrode, the stem was prepared by heating the glass powder and urazing.

이러한 종래의 스템 제조방법은 유리화 하는 과정에서 기포의 대량 발생으로 중간유리의 투명성이 상실되고, 균열이 발생하는 문제점이 있다.Such a conventional stem manufacturing method has a problem that the transparency of the intermediate glass is lost due to a large amount of bubbles in the vitrification process, and cracking occurs.

그리고, 이로인하여 유리와 텅스텐 전극의 흡착불량이 초래되고, 피복되는 유리의 두께를 균일하게 할 수 없다는 문제점이 있다.This causes a problem of poor adsorption of the glass and the tungsten electrode, and there is a problem in that the thickness of the glass to be coated cannot be made uniform.

본 발명은 전기한 종래의 텅스텐 전극 스템 제조방법이 갖는 제반문제점을 감안하여 안출한 것으로서, 텅스텐 전극에 피복되는 중간유리의 두께를 균일하게하고, 발광특성을 양호하게 할 수 있는 봉상 텅스텐 전극의 스템 제조방법을 제공함에 그 목적이 있다.The present invention has been made in view of the problems of the conventional method for manufacturing a tungsten electrode stem described above. The purpose is to provide a manufacturing method.

이의 실현을 위하여 본 발명은 석영관을 회전시키는 제1회전기구와 전극을 회전시키는 제2회전기구를 필요로하며 전극의 산화를 방지하기 위한 불활성 기체의 공급라인과 용융수단의 토오치와 중간유리의 두께를 제어하는 흑연치구를 필요로 하게 된다.To realize this, the present invention requires a first rotating mechanism for rotating the quartz tube and a second rotating mechanism for rotating the electrode, and the torch and the intermediate glass of the inert gas supply line and the melting means to prevent oxidation of the electrode. The graphite jig to control the thickness of the is required.

이하 본 발명을 첨부한 도면에 의거하여 각 공정에 따라 실시예를 설명하면 다음과 같다.Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[제1공정][Step 1]

제1도에 도시한 바와 같이, 불활성기체 공급수단(도시생략)과 연통되는 중심공(1)이 형성된 제1회전기구의 척(2)에 석영관(3)의 일단을 고정시킨 상태로 회전시키면서 토오치(4)로 가열하여, 중간유리(5)를 타단에 접합 시킨다.As shown in FIG. 1, the one end of the quartz tube 3 is fixed to the chuck 2 of the first rotating mechanism in which the central hole 1 is formed to communicate with the inert gas supply means (not shown). While heating the torch 4, the intermediate glass 5 is bonded to the other end.

이때 사용되는 석영관(3)의 내경은 텅스텐 전극 직경의 3-4배가 바람직하며, 중간유리(5)의 양은 피복양을 고려하여 결정한다.In this case, the inner diameter of the quartz tube 3 used is preferably 3-4 times the diameter of the tungsten electrode, and the amount of the intermediate glass 5 is determined in consideration of the coating amount.

[제2공정][Step 2]

제2도에 도시한 바와 같이, 제1회전기구의 척(2)에 대향하는 제2회전기구의 척 (2')에 텅스텐 전극(6)의 일단을 공정시켜 타단이 석영관(3)의 내측으로 삽입된 상태가 되게하여 제1, 2회전기구를 동시에 회전시키면서 토오치(4)로 중간유리(5)를 용융시켜 텅스텐 전극(6)에 융착되게 함과 아울러 흑연치구(7)로 용융되는 중간유리(5)의 두께를 조절한다.As shown in FIG. 2, one end of the tungsten electrode 6 is processed on the chuck 2 'of the second rotating mechanism opposite to the chuck 2 of the first rotating mechanism, and the other end of the quartz tube 3 The intermediate glass 5 is melted by the torch 4 while the first and second rotary mechanisms are rotated at the same time so as to be inserted inwardly, and the molten glass is fused to the tungsten electrode 6 and melted with the graphite jig 7. Adjust the thickness of the intermediate glass (5).

이때 제1회전기구와 제2회전기구는 회전방향과 속도가 일치되어야 하며, 중심공(1)을 통하여 불활성 기체를 석영관(3)내부로 주입시켜 텅스텐 전극(6)의 산화를 방지한다.At this time, the first rotation mechanism and the second rotation mechanism must match the rotation direction and speed, and inert gas is injected into the quartz tube 3 through the central hole 1 to prevent oxidation of the tungsten electrode 6.

그리고 산화방지용 불활성기체로는 질소개스등을 사용한다. 전기한 제1, 제2공정을 거쳐 제조된 봉상의 텅스텐 전극 시스템이 제3도에 도시되어 있다.In addition, nitrogen gas is used as an inert gas for preventing oxidation. A rod-shaped tungsten electrode system manufactured through the first and second steps described above is shown in FIG.

이와 같이 본 발명에 의하면 전극의 산화를 방지할 수 있으며, 전극에 융착되는 중간유리의 기포발생을 방지함과 아울러 그 두께를 균일하게 할 수 있어 발광특성이 양호단 스템을 제조할 수 있게 된다. 그리고 본 발명은 종래 실시하던 전기영동법에 비하여 제조원가가 절감되는 이점도 있다.As described above, according to the present invention, the oxidation of the electrode can be prevented, the bubble generation of the intermediate glass fused to the electrode can be prevented, and the thickness thereof can be made uniform, so that the stem having good luminous characteristics can be manufactured. In addition, the present invention has the advantage of reducing the manufacturing cost compared to the conventional electrophoresis method.

Claims (1)

석영관(3)의 일단을 제1회전 기구의 척(2)에 고정하여 회전시키면서 타단에 중간유리(5)를 접합하는 제1공정과, 텅스텐 전극(6)을 전기한 제1회전기구와 대향하는 제2회전기구의 척(2')에 고정하여 회전시키면서 척(2)의 중심공(1)을 통해 불활성기체를 공급함과 아울러 흑연치구(7)로 융착되는 중간유리의 두께를 조절하는 제2공정으로 행해지는 봉상 텅스텐 전극의 스템 제조방법.A first step of joining the intermediate glass 5 to the other end while fixing and rotating one end of the quartz tube 3 to the chuck 2 of the first rotating mechanism; While fixing and rotating to the opposite chuck 2 'of the second rotating mechanism, the inert gas is supplied through the center hole 1 of the chuck 2 and the thickness of the intermediate glass fused to the graphite jig 7 is adjusted. The stem manufacturing method of the rod-shaped tungsten electrode performed by a 2nd process.
KR1019880013984A 1988-10-26 1988-10-26 Method of making stem of bar-type tungsten electrode KR910003168B1 (en)

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KR910003168B1 true KR910003168B1 (en) 1991-05-20

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