JPH0810619B2 - Electrode bonding method for non-metallic heating element - Google Patents
Electrode bonding method for non-metallic heating elementInfo
- Publication number
- JPH0810619B2 JPH0810619B2 JP1254736A JP25473689A JPH0810619B2 JP H0810619 B2 JPH0810619 B2 JP H0810619B2 JP 1254736 A JP1254736 A JP 1254736A JP 25473689 A JP25473689 A JP 25473689A JP H0810619 B2 JPH0810619 B2 JP H0810619B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- zirconia
- lead wire
- sheet
- bonding method
- 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 - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 8
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 46
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 9
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 16
- 229910052697 platinum Inorganic materials 0.000 description 8
- 238000005304 joining Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Resistance Heating (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は新規な非金属発熱体における電極接合方法に
関し、特に大気又は酸化雰囲気下で1800℃以上の超高温
に加熱する必要がある場合に用いるジルコニア発熱体に
おける電極接合方法に関するものである。TECHNICAL FIELD The present invention relates to a method for joining electrodes in a novel non-metallic heating element, and particularly when it is necessary to heat to an ultrahigh temperature of 1800 ° C. or higher in the air or an oxidizing atmosphere. The present invention relates to a method for joining electrodes in a zirconia heating element used.
従来の非金属発熱体、たとえばジルコニア発熱体は通
常次のようにしてつくられる。即ち加圧成形又は押出し
成形でまず一定長さと径のジルコニア（ZrO2）製の丸棒
を作製後乾燥焼成する。引続き、旋盤により中央部の発
熱部を加工し研磨して発熱体に仕上げる。更に第３図に
示すように端部の外周に室温で可撓性を有するジルコニ
アファイバーシート10を少くとも二周まきつけてその間
に白金リード線11の端部を差し込んでつくられていた。
もしくはシート10の取付部に予めリード線11の端部を差
し込んで圧着し、これを巻きつける等してつくられてい
た。Conventional non-metallic heating elements, such as zirconia heating elements, are usually made as follows. That is, by pressure molding or extrusion molding, a round bar made of zirconia (ZrO 2 ) having a certain length and diameter is first prepared, and then dried and fired. Subsequently, the central heating portion is processed by a lathe and polished to finish the heating element. Further, as shown in FIG. 3, the zirconia fiber sheet 10 having flexibility at room temperature was wound around the outer periphery of the end portion at least twice, and the end portion of the platinum lead wire 11 was inserted between them.
Alternatively, it is made by inserting the end portion of the lead wire 11 into the mounting portion of the sheet 10 in advance, crimping it, and winding it.
しかしながら、このようにしてつくられたジルコニア
発熱体にあっては用いられるジルコニアシートが使用中
高温で膨脹あるいは収縮して割れたり、ずれたりして通
電ができなくなる。又上記のように1800℃前後の超高温
にも達するので、白金リード線が溶融蒸発してやせほそ
り、遂には断線にいたり易い。従って従来のジルコニア
発熱体の電極部は破損しやすく寿命が短く、その延命化
が望まれていた。However, in the zirconia heating element produced in this way, the zirconia sheet used expands or contracts at high temperature during use and cracks or shifts, making it impossible to energize. Further, as mentioned above, since it reaches an extremely high temperature of around 1800 ° C., the platinum lead wire is melted and evaporated, and it becomes thin and thin, and it is easy to end up with a break. Therefore, the electrode portion of the conventional zirconia heating element is easily damaged and has a short life, and it has been desired to extend its life.
かくて本発明はかかる難点を解決して耐火物シートの
破損、通電用リード線の断線等生ずることなく長期にわ
たって良好に用いられる非金属発熱体の電極接合方法を
提供することを目的とするものである。Thus, an object of the present invention is to solve the above problems and to provide a method for joining electrodes of a non-metallic heating element that can be favorably used for a long period of time without causing damage to the refractory sheet, disconnection of current-carrying lead wires, or the like. Is.
本発明によれば、ジルコニア発熱体の両端子部に凹部
を設け、前記凹部へ通電用リード線の端部を室温で可撓
性を有するジルコニアファイバーシートで被覆固定する
ことを特徴とする非金属発熱体の電極接合方法によりか
かる目的が達成されることが見出されたのである。According to the present invention, a non-metal characterized in that a concave portion is provided in both terminal portions of a zirconia heating element, and an end portion of a lead wire for energization is covered and fixed to the concave portion with a zirconia fiber sheet having flexibility at room temperature. It has been found that such a purpose can be achieved by the method of joining the electrodes of the heating element.
図面について本発明方法の一実施例を説明する。 An embodiment of the method of the present invention will be described with reference to the drawings.
図面第１〜２図における本発明にかかるジルコニア発
熱体１は中央部の発熱部２と両端部の端子部３を有し、
その端子部３の端面４から少し距離隔たったところを穿
設して小さな直径の凹部５を一定の幅、深さで形成す
る。又端面４より凹部５に至る端面部６には外周に等間
隔に数ケ所、例えば図においては三箇所に切り溝７を設
ける。その凹部５には室温で可撓性を有するジルコニア
ファイバーシート８を二周又はそれ以上巻きつけてその
間に白金リード線９の端部を挿入しこれを被覆固定す
る。或はまず一周シート８をまきリード線挿入後、更に
別体のシート８を一周まくようにしてもよく任意であ
る。この白金リード線９は上記切り溝７により端面部６
を通す。前記切り溝７の深さ、位置等は上記白金リード
線９を通すのに適するよう調整する。A zirconia heating element 1 according to the present invention in FIGS. 1 and 2 has a heating portion 2 at a central portion and terminal portions 3 at both ends,
A recess 5 having a small diameter is formed with a constant width and depth by making a hole at a distance from the end face 4 of the terminal portion 3. Further, the end face portion 6 extending from the end face 4 to the concave portion 5 is provided with kerfs 7 at several places on the outer periphery at equal intervals, for example, three places in the figure. A zirconia fiber sheet 8 having flexibility at room temperature is wound around the recess 5 twice or more, and an end portion of a platinum lead wire 9 is inserted between them to cover and fix it. Alternatively, the sheet 8 may be wound around once and the lead wire may be inserted, and then the sheet 8 that is a separate member may be wound around once. The platinum lead wire 9 has the end face portion 6 formed by the cut groove 7.
Pass through. The depth, position, etc. of the cut groove 7 are adjusted so as to be suitable for passing the platinum lead wire 9.
上記ジルコニアファイバーシート８はジルコニアファ
イバーに通常ジルコニア安定化剤を添加したジルコニア
粉末と混ぜ、これに可撓性バインダーを配合してシート
状に成形されたものであり、室温で可撓性を有するとと
もに使用時超高温に耐える良好な耐熱性を有する。この
シート８は室温時凹部５に巻き付け積層した後乾燥し、
加熱、焼成される。このジルコニアファイバーシートの
組成、製法等の詳細はたとえば特願昭63-187346号明細
書（特公平5-18775号公報）に記載されている。The zirconia fiber sheet 8 is formed by mixing zirconia powder obtained by usually adding a zirconia stabilizer to zirconia fiber, and blending this with a flexible binder to form a sheet, and having flexibility at room temperature. It has good heat resistance to withstand ultra-high temperatures during use. The sheet 8 is wound around the recess 5 at room temperature, laminated and dried,
It is heated and baked. The details of the composition and manufacturing method of this zirconia fiber sheet are described in, for example, Japanese Patent Application No. 63-187346 (Japanese Patent Publication No. 5-18775).
このようにジルコニアファイバーシートは凹部に巻き
つけて白金リード線を被覆固定しているので高温使用時
にあっても割れたり、ずれたりすることなく、白金リー
ド線も凹部にて前記シートにより被覆固定されているの
で超高温にさらされても溶融蒸発して断線することな
く、電極部の耐用性又は寿命を向上させることができ
る。又発熱体とシートに同じジルコニア質のものを用い
たので特に超高温における適合性が良好である。In this way, the zirconia fiber sheet is wound around the recess to cover and fix the platinum lead wire, so that the platinum lead wire is also covered and fixed in the recess by the sheet without cracking or slipping even when used at high temperatures. Therefore, even if it is exposed to an ultrahigh temperature, it is possible to improve the durability or life of the electrode portion without melting and evaporating and breaking. Moreover, since the same zirconia material is used for the heating element and the sheet, the compatibility is particularly good at ultrahigh temperatures.
このように、本発明方法によるときは従来の非金属発
熱体の端子部における耐火物シートの破損、通電用リー
ド線の断線等をよく防止してその延命化を図ることがで
きて良好である。As described above, according to the method of the present invention, it is possible to prevent the breakage of the refractory sheet in the terminal portion of the conventional non-metallic heating element, the disconnection of the current-carrying lead wire, and the like, thereby prolonging the life thereof. .
図面第１図は本発明に係るジルコニア発熱体の一実施例
の要部斜視図、第２図は同断面図、第３図は従来例を示
す断面図である。 １……ジルコニア発熱体、２……発熱部、３……端子
部、４……端面、５……凹部、６……端面部、７……切
り溝、8,10……ジルコニアファイバーシート、9,11……
白金リード線。Drawing FIG. 1 is a perspective view of an essential part of an embodiment of a zirconia heating element according to the present invention, FIG. 2 is a sectional view of the same, and FIG. 3 is a sectional view showing a conventional example. 1 ... Zirconia heating element, 2 ... Heating section, 3 ... Terminal section, 4 ... End face, 5 ... Recessed portion, 6 ... End face portion, 7 ... Groove, 8,10 ... Zirconia fiber sheet, 9,11 ……
Platinum lead wire.
Claims (1)
け、前記凹部へ通電用リード線の端部を室温で可撓性を
有するジルコニアファイバーシートでもって被覆固着す
ることを特徴とする非金属発熱体における電極接合方
法。1. A non-metal which is characterized in that recesses are provided in both terminal portions of a zirconia heating element, and an end portion of a current-carrying lead wire is covered and fixed to the recesses with a zirconia fiber sheet having flexibility at room temperature. Electrode bonding method for heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254736A JPH0810619B2 (en) | 1989-09-29 | 1989-09-29 | Electrode bonding method for non-metallic heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1254736A JPH0810619B2 (en) | 1989-09-29 | 1989-09-29 | Electrode bonding method for non-metallic heating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03116676A JPH03116676A (en) | 1991-05-17 |
| JPH0810619B2 true JPH0810619B2 (en) | 1996-01-31 |
Family
ID=17269145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1254736A Expired - Fee Related JPH0810619B2 (en) | 1989-09-29 | 1989-09-29 | Electrode bonding method for non-metallic heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810619B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3230793B2 (en) * | 1995-01-24 | 2001-11-19 | 富士電機株式会社 | Ceramic heating element |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58115792A (en) * | 1981-12-28 | 1983-07-09 | 日本化学陶業株式会社 | Heater electrode of lanthanum chromite series |
-
1989
- 1989-09-29 JP JP1254736A patent/JPH0810619B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03116676A (en) | 1991-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |