JPS63146381A - Manufacture of ceramic heater - Google Patents
Manufacture of ceramic heaterInfo
- Publication number
- JPS63146381A JPS63146381A JP29209386A JP29209386A JPS63146381A JP S63146381 A JPS63146381 A JP S63146381A JP 29209386 A JP29209386 A JP 29209386A JP 29209386 A JP29209386 A JP 29209386A JP S63146381 A JPS63146381 A JP S63146381A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- heating element
- metal heating
- thermocouple
- ceramic 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005238 degreasing Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LIXXICXIKUPJBX-UHFFFAOYSA-N [Pt].[Rh].[Pt] Chemical compound [Pt].[Rh].[Pt] LIXXICXIKUPJBX-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Control Of Resistance Heating (AREA)
- Resistance Heating (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、セラミック保護層の形成に係わるセラミッ
クヒータ−の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of manufacturing a ceramic heater, which involves the formation of a ceramic protective layer.
（従来の技？＄Ｉ）
セラミックヒータ−は、ハンダごて、アイロンるるいは
湯わかしなどの一般機器においてその加熱部に広く使用
されている。(Conventional technique? $I) Ceramic heaters are widely used in the heating parts of general equipment such as soldering irons, irons, and hot water heaters.
その構造を図面第１−〜第１Ａ図で説明する。Its structure will be explained with reference to FIGS. 1-1A.
先ずセラミックス製コア２の外周端部に釦熱体端子弘を
設け、この発熱体端子ｌに一端を結線した高融点金属で
あるタングステンや白金などの金属発熱体３が、セラミ
ツゲス製コア２の周囲を蛇行針面されて他端が発熱体端
子μ′と接続されている。First, a button heating element terminal is provided at the outer peripheral end of the ceramic core 2, and a metal heating element 3 made of a high melting point metal such as tungsten or platinum is connected to the heating element terminal 1 at one end around the ceramic core 2. The other end of the meandering needle surface is connected to the heating element terminal μ'.
そして発熱体端子ｔに電流を流すことによって金属発熱
体３が抵抗発熱する。またセラミックス製コア２は内部
に２つの貫通孔を持っておシ、この貫通孔を利用して熱
電対３が配線され、前記金属発熱体３の加熱による温度
を検知し、発熱体端子ｔに流す電流値を変化させたシ、
０Ｎ−ＯＦＦさせることによって、セラミックヒータ−
の温度をコントロールしている。Then, by passing a current through the heating element terminal t, the metal heating element 3 generates resistance heat. Furthermore, the ceramic core 2 has two through holes inside, and a thermocouple 3 is wired using these through holes to detect the temperature due to heating of the metal heating element 3 and connect it to the heating element terminal t. Change the current value to flow,
By turning off the ceramic heater
controls the temperature.
なおこの金属＠熱体３めるいは熱電対ｊは、耐熱性ｐ電
気絶縁性と外部の環境に侵されないセラミックス製の先
端キャップ７とセラミックシートｌによって保護されて
いる。なお乙は熱電対端子である。The metal heating body 3 or thermocouple j is protected by a ceramic tip cap 7 and a ceramic sheet l, which are heat resistant, electrically insulative, and uncorrupted by the external environment. Note that B is a thermocouple terminal.
しかして、ここで上記説明した従来のセラミックヒータ
−の製造方法を説明する。Now, a method of manufacturing the conventional ceramic heater described above will be explained.
先ず、耐熱性を絶縁性を耐薬品性ｌどを備えた高アルミ
ナ質セラミックス材でセラミックス製コア２を押し出し
成形法によって内部に２本の貫通孔、先端にくほみを設
けた形に作成する。First, a ceramic core 2 is made of a high alumina ceramic material with heat resistance, insulation properties, chemical resistance, etc., and is made by extrusion molding into a shape with two through holes inside and a notch at the tip. do.
次にａ２〜０． ｊ ｆｌ厚みのセラミックシート／に
タングステンなどの高融点金属のペーストを金属発熱体
３としてプリントさせる。Next, a2~0. A paste of a high melting point metal such as tungsten is printed as a metal heating element 3 on a ceramic sheet having a thickness of j fl.
そして前記セフミックス製；７２に、このプリントした
セラミックシート／を、そのプリント面をセラミックス
製コアλ側にして巻き付け、両端を接着剤にて固定する
。Then, the printed ceramic sheet was wound around the Cefmix 72 with the printed surface facing the ceramic core λ, and both ends were fixed with an adhesive.
そしてセラミックス製コア２の２つの貫通孔に例えば白
金−白金ロジウムＯ熱電対ｊｔ−挿入すｂその先端の保
護と絶縁のために、セラミックス製コア２の先端に設け
られたくぼみ部に嵌め合わされるセラミックス製キャッ
プ７を付１１゜そして以上の工程で作成したセラミック
ヒータ−を金属発熱体３が酸化しないように脱脂を焼成
される。焼成後、金属発熱体３の両端を発熱体端子ケ・
弘Ｉに夫々結線して製造されていた。Then, for example, a platinum-platinum rhodium O thermocouple is inserted into the two through holes of the ceramic core 2. In order to protect and insulate the tip, it is fitted into a recess provided at the tip of the ceramic core 2. A ceramic cap 7 is attached (11°), and the ceramic heater produced in the above steps is degreased and fired to prevent the metal heating element 3 from oxidizing. After firing, connect both ends of the metal heating element 3 to the heating element terminals.
They were manufactured by connecting each to Kou I.
（発明が解決しようとする問題点）
しかし、この従来のセラミックヒータ−の製造方法にお
いて、金属発熱体３をプリントしたセラミックシートｌ
を、セラミックス製コア２に巻き付ける工程で、セラミ
ックシートｌを丸める時に金属発熱体３の断線すること
がらシ、この原因での不良率は約≠Ｏ％であった。(Problems to be Solved by the Invention) However, in this conventional method of manufacturing a ceramic heater, the ceramic sheet l on which the metal heating element 3 is printed is
In the step of winding the metal heating element 3 around the ceramic core 2, the metal heating element 3 may break when the ceramic sheet 1 is rolled up, and the defective rate due to this reason was about ≠0%.
さらに巻き付けた後の焼成後、セラミックシートｌの合
わせ目が、はがれていることが多かった。Furthermore, after wrapping and firing, the joints of the ceramic sheets 1 often peeled off.
この原因での不良率も約≠Ｏ％程度で極めて高い不良率
となっていた。The defective rate due to this cause was also extremely high, approximately ≠0%.
この発明は、従来の製造方法の以上のような問題点を解
消させ、高歩留多でセラミック保護膜を形成できるより
にしたセラミックヒータ−の製造方法の提供を目的とし
ている。The object of the present invention is to provide a method for manufacturing a ceramic heater which eliminates the above-mentioned problems of the conventional manufacturing method and allows formation of a ceramic protective film with a high yield.
（問題点を解決するための手段）
この目的を達成させるため、この発明は次のような構成
としている。(Means for Solving the Problems) In order to achieve this object, the present invention has the following configuration.
即ちこの発明のセラミックヒータ−の製造方法は、外周
面に金属発熱体のペーストを直接プリントして貫通孔に
熱電対を挿入セットしたセラミックス製コア金１これと
同材質の泥漿セラミック中に浸漬し、少なくとも金属発
熱体と熱電対先端部を保護するセラミック保護膜を形成
させることを特徴とするものである◎
次にこの発明′ｔ−図面第ｊ図ｔ−参照してさらに詳し
く説明する・
先ずセラミックス製コアλの製造は、従来と同様、内部
に２本の貫通孔と、先端は極めて浅いくぼみを設けて作
成される。次いで、このセラミックス製コアλに金属発
熱体３のペーストを直接プリントする。そして上記セラ
ミックス製コア２の貫通孔に熱電対ｊｔ挿入セットする
。That is, the method for manufacturing a ceramic heater of the present invention consists of: a ceramic core metal having a metal heating element paste directly printed on its outer peripheral surface and a thermocouple inserted into a through hole; The present invention is characterized in that a ceramic protective film is formed to protect at least the metal heating element and the tip of the thermocouple.Next, this invention will be explained in more detail with reference to Fig. J of the drawings. The ceramic core λ is manufactured by providing two through holes inside and an extremely shallow recess at the tip, as in the conventional method. Next, the paste of the metal heating element 3 is directly printed on this ceramic core λ. Then, a thermocouple jt is inserted and set into the through hole of the ceramic core 2.
以上の１梯によった半製品セラミックス製コア２を、こ
れと同材質のセラミック保護膜となる泥漿セラミック中
に浸漬し、少なくとも金属発熱体３と熱電対Ｓ先端部ｔ
−隠蔽保護するセラミック保護膜１０を塗布形成する。The semi-finished ceramic core 2 made by the above step 1 is immersed in a slurry ceramic made of the same material as the ceramic protective film, and at least the metal heating element 3 and the thermocouple S tip portion t are immersed.
- Coating and forming a ceramic protective film 10 for concealment and protection.
次いで従来同様に脱脂を焼成工程を加え、発熱体端子Ｉ
ＩｖｌＩＩｔ−付けて結線し、製造を完了するものであ
る。Next, a degreasing and firing process is added in the same manner as before, and the heating element terminal I is
IvlIIt- is attached and wired to complete the manufacturing.
（実施例）
この発明の詳細な説明する◎
先ず、セラミックス製コアを、表に示した化学成分値の
高アルミナ粉末に成形助剤と水分７７％加えて混練し、
真空土練機で押し出し成形した０表
形状は乙ｎ径−長さ６０１ｎで内部貫通孔はａ乙闘径２
本、先端には＋、、ｒｍ径り深さ２．１ｌｔｔｒａのく
ぼみ部を設けた。(Example) Detailed explanation of this invention ◎ First, a ceramic core was kneaded with alumina powder having a high chemical composition value shown in the table by adding a molding aid and 77% moisture.
The shape of the extrusion molded with a vacuum clay kneading machine is Otsu n diameter - length 601n, and the internal through hole is A otsu diameter 2.
A concave portion with a diameter of 2.1 lttra was provided at the tip of the book.
次に、このセラミックス製コアの外周部にタングステン
ペースト（徳力化学社製）の金属発熱体を印刷機にてプ
リントする。つづいてセラミックス製コアの貫通孔にＰ
ｔ−ＦＢ線の熱電対全挿入する。Next, a metal heating element made of tungsten paste (manufactured by Tokuriki Chemical Co., Ltd.) is printed on the outer periphery of this ceramic core using a printing machine. Next, P in the through hole of the ceramic core.
Insert all the thermocouples of the t-FB wire.
その後、前記表に示した同原料の泥漿物音ビーカーに用
意して、その泥漿中へ２〜３秒浸漬し、セラミック保護
膜（厚み約０． ｊ １ｍｌ ） ｉ形成する。Thereafter, the same raw materials shown in the table above were prepared in a beaker and immersed in the slurry for 2 to 3 seconds to form a ceramic protective film (thickness: approximately 0.j 1 ml).
そして、２°０／分で加熱、６ｏｏ ’ ｏにて１０時
間保持の脱脂処理をし、金属発熱体の酸化を防止するた
め、アルゴンガス雰囲気Ｉ／乙５ｏ０ａで２時間の焼成
をした。これに発熱体端子をとシつけセラミックヒータ
−の製品を得た。歩留りは９０％を超える結果であった
。Then, a degreasing treatment was performed by heating at 2°0/min and holding at 6oo'o for 10 hours, and baking was performed for 2 hours in an argon gas atmosphere I/Otsu 5o0a to prevent oxidation of the metal heating element. A heating element terminal was attached to this to obtain a ceramic heater product. The yield was over 90%.
（発明の効果）
この発明は、以上のようでセラミック保護膜の形成に、
従来のような特にセラミックシートの巻き付けによる金
属発熱体の断線や、つなぎ目からのはがれ等という不良
率の高い現象全完全に無くした。(Effects of the Invention) As described above, the present invention provides a method for forming a ceramic protective film.
This completely eliminates all phenomena that occur in the past, such as disconnection of the metal heating element due to the wrapping of the ceramic sheet and peeling off from the joints, which have a high defect rate.
また先端キャップの作成接着という製造工程をセラミッ
ク泥漿中への浸直にてセラミック保護膜が同時に形成さ
れるため、不必要となった。In addition, the manufacturing process of creating and adhering the tip cap is no longer necessary because the ceramic protective film is formed at the same time by directly dipping it into the ceramic slurry.
そして製造歩留９を飛躍的に向上させた優れた製造方法
の提供に寄与でさるものである。This invention also contributes to the provision of an excellent manufacturing method that dramatically improves the manufacturing yield.
第１図は従来のセラミックヒータ−の正面図、第２図は
同左側面図、第３図は第１図のＡ−Ａ線断面図、第１１
図は第２図のＢ−Ｂ＃断面図、第５図はこの発明方法に
よって製造されたセラミックヒータ−の縦断正面図であ
る。
／１．セラミックシート、２１．セラミンクス製コア、
３０．金属発熱体、！ｔ！’、、発熱体端子、ｔｏ、熱
電対、６０．熱電対端子、７１．キャップ。
特許出願人 東京窯業体式会社
Ｕつ
’ｉ ”Ｉ ＳFig. 1 is a front view of a conventional ceramic heater, Fig. 2 is a left side view of the same, Fig. 3 is a sectional view taken along line A-A in Fig. 1, and Fig.
The figure is a sectional view taken along the line BB# in FIG. 2, and FIG. 5 is a longitudinal sectional front view of a ceramic heater manufactured by the method of the present invention. /1. Ceramic sheet, 21. Ceraminx core,
30. Metal heating element! T! ',, heating element terminal, to, thermocouple, 60. Thermocouple terminal, 71. cap. Patent applicant: Tokyo Ceramic Industry Company Utsu'i "IS"
Claims (1)
孔に熱電対を挿入セットしたセラミックス製コアを、こ
れと同材質の泥漿セラミック中に浸漬し、少なくとも金
属発熱体と熱電対先端部を保護するセラミック保護膜を
形成させることを特徴とするセラミックヒーターの製造
方法。A ceramic core with metal heating element paste printed directly on the outer circumferential surface and a thermocouple inserted into the through hole is immersed in the same slurry ceramic to protect at least the metal heating element and the thermocouple tip. A method for manufacturing a ceramic heater, characterized by forming a ceramic protective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29209386A JPS63146381A (en) | 1986-12-08 | 1986-12-08 | Manufacture of ceramic heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29209386A JPS63146381A (en) | 1986-12-08 | 1986-12-08 | Manufacture of ceramic heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63146381A true JPS63146381A (en) | 1988-06-18 |
Family
ID=17777456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29209386A Pending JPS63146381A (en) | 1986-12-08 | 1986-12-08 | Manufacture of ceramic heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63146381A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4401793A1 (en) * | 1993-02-04 | 1994-08-11 | Unisia Jecs Corp | Ceramic heater and method for its production |
| DE19514643A1 (en) * | 1994-04-20 | 1995-10-26 | Unisia Jecs Corp | Prodn. of ceramic heaters |
| US5916467A (en) * | 1995-11-08 | 1999-06-29 | Unisia Jecs Corporation | Ceramic heater and its manufacturing method |
-
1986
- 1986-12-08 JP JP29209386A patent/JPS63146381A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4401793A1 (en) * | 1993-02-04 | 1994-08-11 | Unisia Jecs Corp | Ceramic heater and method for its production |
| US5630969A (en) * | 1993-02-04 | 1997-05-20 | Unisia Jecs Corporation | Ceramic heater producing method |
| DE19514643A1 (en) * | 1994-04-20 | 1995-10-26 | Unisia Jecs Corp | Prodn. of ceramic heaters |
| US5736095A (en) * | 1994-04-20 | 1998-04-07 | Unisia Jecs Corporation | Method of producing ceramic heater for oxygen sensor |
| US5916467A (en) * | 1995-11-08 | 1999-06-29 | Unisia Jecs Corporation | Ceramic heater and its manufacturing method |
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