JPS5916708B2 - See you next year! - Google Patents
See you next year!Info
- Publication number
- JPS5916708B2 JPS5916708B2 JP13322775A JP13322775A JPS5916708B2 JP S5916708 B2 JPS5916708 B2 JP S5916708B2 JP 13322775 A JP13322775 A JP 13322775A JP 13322775 A JP13322775 A JP 13322775A JP S5916708 B2 JPS5916708 B2 JP S5916708B2
- Authority
- JP
- Japan
- Prior art keywords
- metal tube
- tube
- glass material
- sealing
- sheathed heater
- 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
- 239000002184 metal Substances 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 230000007935 neutral effect Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【発明の詳細な説明】 本発明はシーズヒータの封口方法に関するものである。[Detailed description of the invention] The present invention relates to a method for sealing a sheathed heater.
従来よりシーズヒータにおいては、内部の絶縁パウダー
の吸湿による絶縁劣化を防止するため、金属管の端末開
口部にガラス素材等よりなる封口材を装填して金属管の
端末部を封口しているが、大気中で金属管の端末部を高
温で加熱すると、金属管や端子棒での酸化が激しく、ガ
ラス素材との密着性が悪く、絶縁耐圧が劣化する欠点が
あつた。Conventionally, in sheathed heaters, in order to prevent insulation deterioration due to moisture absorption of the internal insulation powder, the terminal end of the metal tube is sealed by filling the end opening of the metal tube with a sealing material made of glass material, etc. However, when the terminal end of a metal tube is heated to high temperatures in the atmosphere, the metal tube and terminal rod undergo severe oxidation, resulting in poor adhesion to the glass material and deterioration of dielectric strength.
このため、従来においては、中性又は不活性な雰囲気中
にて封口する方法（例えばシーズヒータ全体を雰囲気炉
の中で加熱する方法、端末部を密閉した箱体に納めこの
箱体に中性又は不活性な気体を流して加熱封口する方法
）を用いて封口作業を行なつているが、この方法は生産
設備が大損かりになるぱかりでなく、中性又は不活性な
気体の供給が必要で加工費が高くなるなどの欠点があつ
た。そこで本発明は、シーズヒータの封口を簡単な設備
で、中性又は不活性な気体の供給なしに行なう方法を提
供しようとするものである。For this reason, conventional methods have been used to seal the sheathed heater in a neutral or inert atmosphere (for example, to heat the entire sheathed heater in an atmospheric furnace, or to place it in a box with the terminal end sealed and place it in a neutral or inert atmosphere). However, this method does not necessarily cause major damage to the production equipment, but also requires the supply of neutral or inert gas. There were drawbacks such as high processing costs. Therefore, the present invention aims to provide a method for sealing a sheathed heater using simple equipment and without supplying neutral or inert gas.
以下本発明の一実施例を添付図面を参照して説明する。An embodiment of the present invention will be described below with reference to the accompanying drawings.
まず絶縁パウダー２、および端子棒３に接続された電熱
線４を収納した金属管１の端末部に、ガラス素材５を装
填する。次にこの端部に、上から一端が閉塞した石英管
等よりなり、端末開口部の周囲と少隙を存して形成した
管体６を被せ、高周波コイルＴによつてこのシーズヒー
タの端部を高周波によつて１０００℃に加熱し、ガラス
素材５を密融し封口する。ここで使われる金属管１およ
び端子棒３は、１０００℃で大気中においては激しく酸
化する。First, the glass material 5 is loaded into the end portion of the metal tube 1 containing the insulating powder 2 and the heating wire 4 connected to the terminal bar 3. Next, a tube body 6 made of a quartz tube or the like with one end closed from above and formed with a small gap around the terminal opening is placed over this end, and a high frequency coil T is used to connect the sheathed heater to the end. The glass material 5 is heated to 1000° C. by high frequency, and the glass material 5 is hermetically sealed. The metal tube 1 and terminal bar 3 used here are severely oxidized in the atmosphere at 1000°C.
この封口方法においては、シーズヒータの端部が加熱さ
れると、管体６の内部の空気の温度が上昇し、管体６の
内部の空気が外部に比べ軽くなり、空気の入れ替りがほ
とんど起らない。さらに管体６の内部の空気中の酸素は
、金属管１と金属端子棒３がガラス封着に適当な酸化皮
膜を作つて消費される。管体６内部の酸素がほとんど消
費されると、残ｖは中性な気体にな９、金属管１と金属
端子棒３の酸化は止まＤ、非常に良好な封口が得られる
。以上の説明から明らかなように本発明によれば中性ガ
スを供給することなしに、中性雰囲気中でガラス封口が
でき、量産性が高く、加工費も大巾に節減できるなどす
ぐれた効果を素する。In this sealing method, when the end of the sheathed heater is heated, the temperature of the air inside the tube 6 increases, the air inside the tube 6 becomes lighter than the outside, and almost no exchange of air occurs. No. Further, the oxygen in the air inside the tube body 6 is consumed as the metal tube 1 and the metal terminal rod 3 form an oxide film suitable for glass sealing. When most of the oxygen inside the tube body 6 is consumed, the remaining v becomes a neutral gas9, the oxidation of the metal tube 1 and the metal terminal rod 3 stops D, and a very good sealing is obtained. As is clear from the above explanation, the present invention has excellent effects such as glass sealing in a neutral atmosphere without supplying neutral gas, high mass productivity, and significant reduction in processing costs. to prepare.
図は本発明のシーズヒータの一実施例を示ナ断面図であ
る。
１・・・金属管、５・・・ガラス素材、６・・・管体。The figure is a sectional view showing one embodiment of the sheathed heater of the present invention. 1... Metal tube, 5... Glass material, 6... Tube body.
Claims (1)
末部を一端が閉塞し、端末開口部の周囲と少隙を存して
形成した耐熱性の管体で上方から覆い、この管体の外方
から前記金属管の端末部を加熱し、前記ガラス素材を溶
融して金属管の端末部を封口することを特徴とするシー
ズヒータの封口方法。1. A glass material is loaded into the terminal opening of a metal tube, one end of which is closed, and a heat-resistant tube formed with a small gap around the terminal opening is covered from above, and this tube is closed. A method for sealing a sheathed heater, characterized in that the end portion of the metal tube is heated from the outside to melt the glass material and seal the end portion of the metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13322775A JPS5916708B2 (en) | 1975-11-05 | 1975-11-05 | See you next year! |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13322775A JPS5916708B2 (en) | 1975-11-05 | 1975-11-05 | See you next year! |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5257529A JPS5257529A (en) | 1977-05-12 |
| JPS5916708B2 true JPS5916708B2 (en) | 1984-04-17 |
Family
ID=15099692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13322775A Expired JPS5916708B2 (en) | 1975-11-05 | 1975-11-05 | See you next year! |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5916708B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63179808U (en) * | 1987-05-12 | 1988-11-21 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5586354A (en) * | 1978-12-22 | 1980-06-30 | Matsushita Electric Ind Co Ltd | Sealing method of sheath heater |
-
1975
- 1975-11-05 JP JP13322775A patent/JPS5916708B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63179808U (en) * | 1987-05-12 | 1988-11-21 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5257529A (en) | 1977-05-12 |
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