JPH0125178B2 - - Google Patents
Info
- Publication number
- JPH0125178B2 JPH0125178B2 JP15425082A JP15425082A JPH0125178B2 JP H0125178 B2 JPH0125178 B2 JP H0125178B2 JP 15425082 A JP15425082 A JP 15425082A JP 15425082 A JP15425082 A JP 15425082A JP H0125178 B2 JPH0125178 B2 JP H0125178B2
- Authority
- JP
- Japan
- Prior art keywords
- heat treatment
- panel glass
- jig
- support member
- cathode ray
- 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.)
- Expired
Links
- 239000011521 glass Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 22
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 5
- 239000010425 asbestos Substances 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- 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
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
- H01J9/22—Applying luminescent coatings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Description
この発明はパネルガラスの支持部材を改良した
陰極線管の熱処理治具に関するものである。
一般に、ある種の陰極線管は螢光面部が形成さ
れるパネルガラスと、電子銃が収納されるフアン
ネルガラス（図示しない）とが途中工程まで、別
個に加工処理され、しかる後両者が組み付けられ
て陰極線管が完全される。
ところで、上記パネルガラス１はフアンネルガ
ラスと組み付けられる前に２回の熱処理工程を経
るのが普通である。すなわち、第１図に示すよう
にパネルガラス１に設けられたパネルピン２にシ
ヤドウマスク３を取り付けた状態で、400〜500℃
もの高温で熱処理する。その後、第２図に示すよ
うにパネルガラス１の内面１ｃに螢光面部４を形
成させる。この状態を第３図に詳細に示してあ
り、螢光面部４は、螢光面４ａ、ラツカー４ｂお
よびアルミ膜４ｃから構成されている。
そして、第２図で示す状態で、再び400〜500℃
の高温で熱処理するわけであるが、先の熱処理と
ともにこれらの熱処理作業は第４図に示すように
熱処理治具６にパネルガラス１を取り付けた状態
で行なう。すなわち、第４図に示すような状態
で、これらのブロツクを予め設定された所定の高
温度に調温した連続炉（図示しない）に投入し、
一定時間経過後、連続炉より取り出して、熱処理
を終えるわけである。第５図は別のタイプの熱処
理治具９にパネルガラス１を取り付けた状態を示
しており、熱処理作業は前述したものと何等変り
はない。
ところで、第４図および第５図を見てわかるよ
うにパネルガラス１は、治具本体８，１２に対し
てそのシール面１ａおよび側面１ｂがそれぞれ支
持部材７および１０，１１で支持されているた
め、これら支持部材７，１０，１１の特性により
熱処理作業の歩留りないしは完成後の陰極線管の
品質が大きく左右される。すなわち、これらの支
持部材７，１０，１１が過度に硬いとシール面１
ａおよび側面１ｂに傷がついたり、クラツク等が
発生してガラス割れの原因となる。逆に過度に軟
らかいと消耗が著しく、寿命が短くなるのに加え
て、その粉塵が陰極線管内に入り、欠陥商品の原
因となる。また、絶縁性を損ねるようなものは、
陰極線管として高電圧で動作中にその箇所で絶縁
破壊を起し、陰極線管そのものを不良にしてしま
う。
それがため、従来よりこの支持部材として種々
のものが検得され、実用されてきている。たとえ
ばアスベストテープ、アスベストセメント、そし
て窒化ボロン等がそれであるが、アスベストテー
プは傷やクラツク等の防止の上からは好適であつ
ても粉塵が発生しやすい問題があり、歩留りや品
質面だけでなく安全衛生上、問題である。アスベ
ストセメントは、粉塵が発生しにくいものの、硬
過ぎるため、傷やクラツク等の欠陥が生じやす
い。窒化ボロンは傷やクラツク等には良いがシー
ル面１ａに付着するとその箇所の絶縁性を損ねる
とともに、それに加えて非常に高価であるため、
実用に難がある。
以上のように従来のものはそれぞれ欠点があ
り、実際には全てを満足する材料がないためそれ
等の欠点を承知で使用しているのが実情である。
この発明は上記従来の欠点をほぼ一掃できる熱
処理治具を提供しようとするものである。
以下、この発明の一実施例を説明する。
この発明による熱処理治具は、支持部材に特徴
を有している。すなわち雲母粉末、タルク粉末、
ホウ酸および酸化亜鉛よりなる混合物を加熱加圧
成形した耐熱性絶縁体で支持部材を構成してい
る。その支持部材の特性を窒化ボロンで構成した
ものと比較して表１に示す。
The present invention relates to a cathode ray tube heat treatment jig with an improved panel glass support member. Generally, in some types of cathode ray tubes, the panel glass on which the fluorescent surface is formed and the funnel glass (not shown) in which the electron gun is housed are processed separately until midway through the process, and then the two are assembled. The cathode ray tube was completed. By the way, the panel glass 1 is usually subjected to two heat treatment steps before being assembled with funnel glass. That is, with the shadow mask 3 attached to the panel pins 2 provided on the panel glass 1 as shown in FIG.
Heat treated at high temperature. Thereafter, as shown in FIG. 2, a fluorescent surface portion 4 is formed on the inner surface 1c of the panel glass 1. This state is shown in detail in FIG. 3, where the fluorescent surface section 4 is composed of a fluorescent surface 4a, a lacquer 4b and an aluminum film 4c. Then, under the conditions shown in Figure 2, heat the temperature at 400 to 500℃ again.
The heat treatment is carried out at a high temperature of 100. These heat treatment operations as well as the previous heat treatment are performed with the panel glass 1 attached to the heat treatment jig 6 as shown in FIG. That is, in the state shown in FIG. 4, these blocks were placed in a continuous furnace (not shown) whose temperature was controlled to a predetermined high temperature.
After a certain period of time, the material is removed from the continuous furnace and the heat treatment is completed. FIG. 5 shows a state in which the panel glass 1 is attached to another type of heat treatment jig 9, and the heat treatment work is no different from that described above. By the way, as can be seen from FIGS. 4 and 5, the sealing surface 1a and side surface 1b of the panel glass 1 are supported by support members 7 and 10, 11 with respect to the jig bodies 8, 12, respectively. Therefore, the characteristics of these supporting members 7, 10, and 11 greatly influence the yield of the heat treatment operation or the quality of the completed cathode ray tube. That is, if these support members 7, 10, 11 are too hard, the sealing surface 1
A and side surface 1b may be scratched or cracked, causing glass breakage. On the other hand, if the tube is too soft, it will wear out significantly, shortening its lifespan, and the dust will enter the cathode ray tube, causing defective products. In addition, anything that impairs insulation should be
When operating at high voltage as a cathode ray tube, dielectric breakdown occurs at that point, causing the cathode ray tube itself to become defective. Therefore, various types of supporting members have been found and put into practical use. For example, asbestos tape, asbestos cement, and boron nitride are examples of this.Although asbestos tape is suitable for preventing scratches and cracks, it has the problem of easily generating dust, which is not only a problem in terms of yield and quality. This is a health and safety issue. Although asbestos cement does not easily generate dust, it is too hard and is prone to defects such as scratches and cracks. Boron nitride is good for scratches and cracks, but if it adheres to the sealing surface 1a, it impairs the insulation of that area, and in addition, it is very expensive.
It is difficult to put it into practice. As mentioned above, each of the conventional products has its drawbacks, and in reality, there is no material that satisfies all of them, so the reality is that they are used with the knowledge of these drawbacks. The present invention aims to provide a heat treatment jig that can substantially eliminate the above-mentioned conventional drawbacks. An embodiment of this invention will be described below. The heat treatment jig according to the present invention has a feature in the support member. i.e. mica powder, talc powder,
The support member is made of a heat-resistant insulator made by heating and press-molding a mixture of boric acid and zinc oxide. Table 1 shows the characteristics of the support member in comparison with those made of boron nitride.
【表】
表１の特性から明らかなように窒化ボロンの良
いところは、この発明のものでもほぼ同じような
特性を示し、悪いところは改善されている。した
がつて、窒化ボロン等の従来の支持部材の代りに
この発明の構成の支持部材を用いれば従来の欠点
を一掃した熱処理ができることになる。
第６図は上記構成の支持部材１４と治具本体１
５からなる熱処理治具１３にパネルガラス１を取
付けた状態を示している。このものは同図より明
らかなように第４図の従来の治具６の支持部材７
を上記構成の支持部材１４に置きかえればよいも
のであり、第５図の別のタイプのものにも容易に
適用できる。
このように、上記構成の治具１３は支持部材１
４の機械加工性が優れているため、従来の治具本
体８，１２をそのまま利用できるとともに表１の
ような優れた好特性の恩恵を受けることができ
る。すなわち、パネルガラス１のシール面１ａや
側面１ｂに傷がついたり、クラツクが発生するお
それがなくなり、しかも粉塵の発生が極めて少な
く、また電気的絶縁性にも優れているため、熱処
理作業の歩留りが向上し、極めて高品質の陰極線
管の製造が可能となつた。また、安価で消耗が少
ないため、保修の手間が省け、さらにアスベスト
等を用いたものに比さと公害のおそれもない。
以上のように、この発明はパネルガラスの支持
部材を、雲母粉末、タルク粉末、ホウ酸および酸
化亜鉛からなる混合物の成形体で構成することに
より、高信頼性の陰極線管の製造に寄与できる熱
処理治具を提供することができる。[Table] As is clear from the characteristics in Table 1, the good points of boron nitride are almost the same in the present invention, and the bad points have been improved. Therefore, if a support member having the structure of the present invention is used in place of a conventional support member such as boron nitride, heat treatment can be performed that eliminates the drawbacks of the conventional support member. FIG. 6 shows the support member 14 and jig main body 1 having the above configuration.
The panel glass 1 is shown attached to a heat treatment jig 13 made up of 5 parts. As is clear from the same figure, this support member 7 of the conventional jig 6 shown in FIG.
It is only necessary to replace the support member 14 with the above structure, and it can be easily applied to another type of support member shown in FIG. In this way, the jig 13 with the above structure
Since the machinability of No. 4 is excellent, the conventional jig bodies 8 and 12 can be used as they are, and at the same time, it is possible to benefit from the excellent characteristics shown in Table 1. In other words, there is no risk of scratches or cracks on the sealing surface 1a or side surface 1b of the panel glass 1, and in addition, the generation of dust is extremely low, and the electrical insulation is excellent, so the yield of heat treatment work is improved. This has made it possible to manufacture extremely high quality cathode ray tubes. In addition, since it is inexpensive and has little wear and tear, it saves maintenance and there is no risk of pollution compared to those using asbestos or the like. As described above, the present invention provides a heat treatment that contributes to the manufacture of highly reliable cathode ray tubes by configuring the support member of the panel glass with a molded body of a mixture of mica powder, talc powder, boric acid, and zinc oxide. Jig can be provided.
第１図は螢光面部形成前のパネルガラスを示す
断面図、第２図は螢光面部形成後のパネルガラス
を示す断面図、第３図は第２図の螢光面部の一部
拡大断面図、第４図および第５図は第１図および
第２図に示すパネルガラスを従来の異なるタイプ
の熱処理治具に取り付けた状態を示す断面図、第
６図は第１図および第２図に示すパネルガラスを
この発明による熱処理治具に取り付けた状態を示
す断面図である。
１４……支持部材、１５……治具本体。なお、
図中同一符号は同一もしくは相当部分を示す。
Fig. 1 is a sectional view showing the panel glass before the fluorescent surface part is formed, Fig. 2 is a sectional view showing the panel glass after the fluorescent surface part is formed, and Fig. 3 is a partially enlarged cross section of the fluorescent surface part in Fig. 2. Figures 4 and 5 are cross-sectional views showing the panel glass shown in Figures 1 and 2 attached to a different type of conventional heat treatment jig, and Figure 6 is a cross-sectional view of the panel glass shown in Figures 1 and 2. FIG. 2 is a sectional view showing a state in which the panel glass shown in FIG. 1 is attached to a heat treatment jig according to the present invention. 14...Supporting member, 15...Jig main body. In addition,
The same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
て、パネルガラス側面およびパネルガラスシール
面とを治具本体に支持する支持部材を、雲母粉
末、タルク粉末、ホウ酸および酸化亜鉛からなる
混合物を加熱加圧成形した耐熱性絶縁体で構成し
たことを特徴とする陰極線管の熱処理治具。1. In a jig for high-temperature heat treatment of panel glass, a support member that supports the side surface of the panel glass and the sealing surface of the panel glass on the jig body is formed by heating and press-molding a mixture consisting of mica powder, talc powder, boric acid, and zinc oxide. A heat treatment jig for a cathode ray tube, characterized in that it is made of a heat-resistant insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15425082A JPS5944747A (en) | 1982-09-03 | 1982-09-03 | Heat treatment jig for cathode ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15425082A JPS5944747A (en) | 1982-09-03 | 1982-09-03 | Heat treatment jig for cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5944747A JPS5944747A (en) | 1984-03-13 |
| JPH0125178B2 true JPH0125178B2 (en) | 1989-05-16 |
Family
ID=15580109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15425082A Granted JPS5944747A (en) | 1982-09-03 | 1982-09-03 | Heat treatment jig for cathode ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5944747A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186154U (en) * | 1985-05-10 | 1986-11-20 |
-
1982
- 1982-09-03 JP JP15425082A patent/JPS5944747A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5944747A (en) | 1984-03-13 |
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