JP2592461Y2 - Carbon fiber reinforced carbon washer - Google Patents

Carbon fiber reinforced carbon washer

Info

Publication number
JP2592461Y2
JP2592461Y2 JP1993077088U JP7708893U JP2592461Y2 JP 2592461 Y2 JP2592461 Y2 JP 2592461Y2 JP 1993077088 U JP1993077088 U JP 1993077088U JP 7708893 U JP7708893 U JP 7708893U JP 2592461 Y2 JP2592461 Y2 JP 2592461Y2
Authority
JP
Japan
Prior art keywords
carbon
electrode
fiber reinforced
joint
washer
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 - Lifetime
Application number
JP1993077088U
Other languages
Japanese (ja)
Other versions
JPH0735815U (en
Inventor
俊一 須藤
将実 久米
信一郎 飯田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Carbon Co Ltd
Original Assignee
Nippon Carbon Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Carbon Co Ltd filed Critical Nippon Carbon Co Ltd
Priority to JP1993077088U priority Critical patent/JP2592461Y2/en
Publication of JPH0735815U publication Critical patent/JPH0735815U/en
Application granted granted Critical
Publication of JP2592461Y2 publication Critical patent/JP2592461Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】本考案は、各種の高温炉における
カーボンヒーター素子とカーボンヒーター素子またはカ
ーボンヒーターとカーボン電極との継手部につき、ボル
トの緩みに起因する放電事故を防止しようとした、継手
部に関するものである。
BACKGROUND OF THE INVENTION The present invention relates to a joint for preventing a discharge accident caused by a loose bolt in a joint between a carbon heater element and a carbon heater element or a carbon heater and a carbon electrode in various high-temperature furnaces. It is about the department.

【0002】[0002]

【従来の技術】高温炉におけるカーボンヒーター素子と
カーボンヒーター素子またはカーボンヒーターとカーボ
ン電極との継手部は、通常カーボンボルトにより締結さ
れている。このカーボンボルトは長時間使用すると緩み
を生じることがあり、カーボンヒーター素子とカーボン
ヒーター素子またはカーボンヒーターとカーボン電極の
電極継手部の接続面での放電事故が生じることがある。
2. Description of the Related Art In a high-temperature furnace, a joint between a carbon heater element and a carbon heater element or between a carbon heater and a carbon electrode is usually fastened by carbon bolts. When the carbon bolt is used for a long time, the carbon bolt may be loosened, and a discharge accident may occur at a connection surface between a carbon heater element and a carbon heater element or an electrode joint portion between a carbon heater and a carbon electrode.

【0003】上記のカーボンボルトの緩みの原因として
は次の(1)〜(4)のようなものが考えられる。 (1)ボルトの締めつけ不足によるもの (2)熱膨張による熱膨張差によるもの (3)熱サイクルによるもの (4)ボルトのクリープ特性が良好でないため この緩みを防止するために、可撓性黒鉛材をクツシヨン
材として、接続部に挟み込む方法もある。しかし、この
場合でも可撓性黒鉛材の復元性が小さいため、ボルトの
緩みを防ぐ効果は不十分なものになる。
The following causes (1) to (4) can be considered as causes of the loosening of the carbon bolts. (1) Due to insufficient tightening of bolts (2) Due to thermal expansion difference due to thermal expansion (3) Due to thermal cycle (4) Because creep characteristics of bolts are not good, flexible graphite to prevent this loosening There is also a method in which the material is used as a cushion material and is sandwiched between the connection portions. However, even in this case, since the resilience of the flexible graphite material is small, the effect of preventing the bolt from becoming loose is insufficient.

【0004】[0004]

【考案が解決しようとする課題】上記のような問題点を
解決するために、本考案者らは、高温炉におけるカーボ
ンヒーター素子とカーボンヒーター素子またはカーボン
ヒーターとカーボン電極の継手部において、カーボンボ
ルトに緩みが生じても接続面に適正な面圧を長時間保持
でき、放電事故を防止できる継手部の構造を提供しよう
とするものである。
SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present inventors have proposed a method of manufacturing a carbon heater element and a carbon heater element in a high-temperature furnace or a carbon bolt at a joint between a carbon heater and a carbon electrode. It is an object of the present invention to provide a joint structure which can maintain a proper surface pressure on the connection surface for a long time even if the connection surface is loosened, thereby preventing a discharge accident.

【0005】[0005]

【課題を解決するための手段】上記の問題点を解決する
ために、本考案者らが創案したのは、高温炉において、
カーボンヒーター素子とカーボンヒーター素子またはカ
ーボンヒーターとカーボン電極とをカーボンボルトによ
り接続した継手部において、炭素繊維強化炭素製のスプ
リングワッシヤーを介在させた電極継手部である。
Means for Solving the Problems In order to solve the above problems, the present inventors have devised a high-temperature furnace.
An electrode joint portion in which a spring washer made of carbon fiber reinforced carbon is interposed in a joint portion in which a carbon heater element and a carbon heater element or a carbon heater and a carbon electrode are connected by carbon bolts.

【0006】スプリングワッシャーの形状はスパイラル
なコイル形または円錐形のいずれも使用可能である。前
記のスプリングワッシャーが円錐形であると締付けが容
易である。以下に本考案を図面とともに円錐形のスプリ
ングワッシャーを用いた例で詳細に説明する。
[0006] The shape of the spring washer can be either a spiral coil shape or a conical shape. If the spring washer has a conical shape, it can be easily tightened. Hereinafter, the present invention will be described in detail with reference to the drawings using an example in which a conical spring washer is used.

【0007】図1は従来のカーボンヒーターとカーボン
電極の継手部である。カーボンヒーター2とカーボン電
極3はカーボンボルト1によって接続されている。図2
は、本考案におけるカーボンヒーターとカーボン電極の
継手部である。
FIG. 1 shows a joint between a conventional carbon heater and a carbon electrode. The carbon heater 2 and the carbon electrode 3 are connected by a carbon bolt 1. FIG.
Is a joint between the carbon heater and the carbon electrode in the present invention.

【0008】カーボンボルト1とカーボンヒータ2の間
には、炭素繊維強化炭素製のスプリングワッシャー4を
介在させることにより、カーボンボルトに緩みが生じて
もスプリングワッシャーのバネの効果により締め付け力
が維持でき、放電事故の防止が可能になる。
A spring washer 4 made of carbon fiber reinforced carbon is interposed between the carbon bolt 1 and the carbon heater 2, so that even if the carbon bolt becomes loose, the tightening force can be maintained by the spring effect of the spring washer. Thus, it is possible to prevent a discharge accident.

【0009】また本考案のスプリングワッシャーは、材
質が炭素繊維強化炭素材であるので、一般的なカーボン
材よりも高強度、高弾性であり、高温炉内でも、高温強
度が高く金属製のものが常温から200℃程度しか使え
ないのに対し、500〜2600℃の高温においても常
温と同等の特性を持たせることができる。また金属製の
もののように高温下における形状変化もほとんどなく、
腐食雰囲気下においても長時間使用できる。
Further, since the spring washer of the present invention is made of carbon fiber reinforced carbon material, it has higher strength and higher elasticity than general carbon material, and has high high temperature strength even in a high temperature furnace and is made of metal. Can only be used at room temperature to about 200 ° C., but at temperatures as high as 500 to 2600 ° C., it can have the same characteristics as at room temperature. In addition, there is almost no shape change under high temperature like metal's,
Can be used for a long time even in a corrosive atmosphere.

【0010】本考案におけるスプリンダワッシャーの形
状は、円錐形とするのが好ましい。これによりワツシャ
ーのクリープ特性を向上させることが可能になる。
The shape of the springer washer in the present invention is preferably a conical shape. This makes it possible to improve the creep characteristics of the washer.

【0011】[0011]

【実施例】炭素繊維クロスにフェノール樹脂を含浸した
プリプレグを円形に切断し、繊維の方向をランダムに積
層したものを円錐形の型により、加圧加熱成形させ、約
2000℃にて焼成し、炭素繊維強化炭素製のスプリン
グワッシャーを得た。このスプリングワッシヤーをカー
ボン電極とカーボンヒーターとの接続において、カーボ
ンボルトとカーボンヒーターとの間に介在させカーボン
電極とカーボンヒーターとの電極継手部の構造とした。
上記の継手部のヒーターでCZ用シリコン単結晶化炉に
おいて約1600℃で1200時間操業したが、継手部
における放電事故も発生せず、良好な使用状態であっ
た。
EXAMPLE A prepreg impregnated with a phenolic resin in a carbon fiber cloth was cut into a circle, and a fiber obtained by randomly laminating the directions of the fibers was pressed and heated in a conical mold and fired at about 2000 ° C. A spring washer made of carbon fiber reinforced carbon was obtained. The spring washer was interposed between the carbon bolt and the carbon heater when the carbon electrode was connected to the carbon heater to form an electrode joint between the carbon electrode and the carbon heater.
The heater at the joint described above was operated in a silicon single crystallization furnace for CZ at about 1600 ° C. for 1200 hours, but no discharge accident occurred at the joint and the condition was good.

【0012】[0012]

【比較例】実施例のようなスプリングワッシャーを使用
せず、カーボン電極とカーボンヒーターとの接続にカー
ボンボルトのみを使用した電極継手部で、実施例と同様
シリコン単結晶化炉において、約1600℃で1200
時間操業した。その結果カーボンボルトの緩み等に起因
するカーボン電極とカーボンヒーターとの継手部におけ
る放電事故が発生した。
[Comparative Example] An electrode joint using only a carbon bolt for connection between a carbon electrode and a carbon heater without using a spring washer as in the embodiment. At 1200
Hours worked. As a result, a discharge accident occurred at the joint between the carbon electrode and the carbon heater due to the loosening of the carbon bolt.

【0013】[0013]

【考案の効果】以上のように本考案においては、カーボ
ンヒーター素子とカーボンヒーター素子またはカーボン
ヒーターとカーボンとの継手部において炭素繊維強化炭
素製のワッシャーを用いることにより、カーボンボルト
が緩んだ場合においても、接続面に適正な面圧を長時間
保持でき、接続面での放電事故の防止に効果がある。ま
たスプリングワッシャーの形状を円錐形とすることによ
り、取り付け作業が容易にすることができる。
[Effect of the Invention] As described above, in the present invention, the use of the carbon fiber reinforced carbon washer at the joint between the carbon heater element and the carbon heater element or between the carbon heater and carbon allows the carbon bolt to be loosened. In addition, an appropriate surface pressure can be maintained at the connection surface for a long time, which is effective in preventing a discharge accident at the connection surface. In addition, by making the shape of the spring washer conical, the mounting operation can be facilitated.

【図面の簡単な説明】[Brief description of the drawings]

【図1】従来のカーボンヒーターとカーボン電極の継手
部である。
FIG. 1 shows a joint between a conventional carbon heater and a carbon electrode.

【図2】本考案のカーボンヒーターとカーボン電極の継
手部である。
FIG. 2 shows a joint between a carbon heater and a carbon electrode according to the present invention.

【符号の説明】[Explanation of symbols]

1 カーボンボルト 2 カーボンヒーター 3 カーボン電極 4 炭素繊維強化炭素製スプリングワッシャー DESCRIPTION OF SYMBOLS 1 Carbon bolt 2 Carbon heater 3 Carbon electrode 4 Carbon fiber reinforced carbon spring washer

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−92056(JP,A) 特開 平4−310500(JP,A) 特開 昭55−94016(JP,A) 特開 平4−331811(JP,A) 特開 昭61−222982(JP,A) 特開 昭63−297457(JP,A) 特開 平4−310567(JP,A) 特開 平4−310568(JP,A) 実開 昭62−8409(JP,U) 実開 平5−90881(JP,U) (58)調査した分野(Int.Cl.6,DB名) F16B 43/00 H05B 3/03 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-92056 (JP, A) JP-A-4-310500 (JP, A) JP-A-55-94016 (JP, A) JP-A-4-94 331811 (JP, A) JP-A-61-222982 (JP, A) JP-A-63-297457 (JP, A) JP-A-4-310567 (JP, A) JP-A-4-310568 (JP, A) Japanese Utility Model Application Sho 62-8409 (JP, U) Japanese Utility Model Application Hei 5-90881 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) F16B 43/00 H05B 3/03

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 高温炉において、カーボンヒーター素子
とカーボンヒーター素子またはカーボンヒーターとカー
ボン電極とをカーボンボルトにより接続した電極継手部
において、炭素繊維強化炭素製のコイルスプリングまた
はスプリングワッシャーを介在させたことを特徴とする
電極継手部
In a high temperature furnace, a coil spring or a spring washer made of carbon fiber reinforced carbon is interposed at an electrode joint portion where a carbon heater element and a carbon heater element or a carbon heater and a carbon electrode are connected by a carbon bolt. Electrode joint part characterized by the following
JP1993077088U 1993-12-07 1993-12-07 Carbon fiber reinforced carbon washer Expired - Lifetime JP2592461Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1993077088U JP2592461Y2 (en) 1993-12-07 1993-12-07 Carbon fiber reinforced carbon washer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993077088U JP2592461Y2 (en) 1993-12-07 1993-12-07 Carbon fiber reinforced carbon washer

Publications (2)

Publication Number Publication Date
JPH0735815U JPH0735815U (en) 1995-07-04
JP2592461Y2 true JP2592461Y2 (en) 1999-03-24

Family

ID=13624033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1993077088U Expired - Lifetime JP2592461Y2 (en) 1993-12-07 1993-12-07 Carbon fiber reinforced carbon washer

Country Status (1)

Country Link
JP (1) JP2592461Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8974891B2 (en) 2007-10-26 2015-03-10 Coi Ceramics, Inc. Thermal protection systems comprising flexible regions of inter-bonded lamina of ceramic matrix composite material and methods of forming the same
DE102012102210A1 (en) * 2012-03-15 2013-09-19 Solibro Gmbh Heating system for a vacuum deposition source and vacuum separation device

Also Published As

Publication number Publication date
JPH0735815U (en) 1995-07-04

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