【発明の詳細な説明】
（産業上の利用分野）
本発明は例えば大型の碍管素材のような陶磁器体を相互
に接合するために用いられる陶磁器体の接合方法に関す
るものである．
（従来の技術）
例えば大型の碍管等を製造する場合には、全体を一体成
形で形成することは重量が重くなるので取扱いが困難と
なり、更に変形、偏芯等の問題もあるので、一般的には
製品を複数個に区分割した分割体をそれぞれ別個に成形
し、乾燥状態あるいは焼成後の複数の分割単体よりなる
碍管素材を無機質接合材を用いて相互接合し一体化する
ことが知られている．
このため、従来から無機質接合材としての接合用の釉薬
（継釉）を用いて分割された単体得管素材を接合によっ
て一体化する方法が取られてきたが、接合に際しては接
合面における接合用の釉薬の厚さを所定量とする必要が
ある．しかしながら１〜２回の接合用の釉薬の塗布では
所定量とならないため、釉薬を陶磁器体の接合部に塗布
しては乾燥する塗布乾燥工程を１０−１５回繰り返す必
要があり、接合面への塗布を完了するのに１５〜２０分
を要するうえに、そのための手数も煩雑なものであった
．
そこで特開昭５７−９２５８４号公報に示されるように
、釉薬粉末を有機質バインダーで混練してテープ状に成
形し、この接合用釉薬テープを陶磁器体の接合部に載せ
て陶磁器体を積重し、焼成して一体的に接合するように
した陶磁器体の接合方法も提案されている．しかしこの
方法の場合には接合用の釉薬テープを接合面全面に載置
するので焼成時に溶けた接合用テープの釉薬が接合部か
ら流れ出し製品の表面に垂れていわゆる釉グレと呼ばれ
る欠点を生ずることがある．また、釉ダレ現象を少なく
することを目的に釉薬テープを肉薄とすると均質な接合
が得られにくく、さらに陶磁器体積重時のクッシッン効
果がないために陶磁器体の接合面を傷めるという問題が
あった．
（発明が解決しようとする課題）
本発明はこのような従来の問題を解決して、陶磁器体の
接合を短時間で手際よ《行うことができるとともに、接
合用の釉薬の接合部からの外部への流出及び接合する陶
磁器体相互の接合面の損傷をともに防止することができ
る陶磁器体の接合方法を提供するために完成されたもの
である．（ＩＩＩ！ｌを解決するための手段）
上記の課脛を解決するための本発明は、釉薬粉末とバイ
ンダーとの混合物からなるテープを陶磁器体の接合部に
介在させて焼成する陶磁器体の接合方法において、テー
プの幅を陶磁器体の接合部の幅の４０〜９０％とし、テ
ープを陶磁器体の接合部に形成された凹部の中央に位置
させて焼成することを特徴とするものである．
（実施例）
以下に本発明を一興体例である碍管の接合を示す図面を
参照しつつ更に詳細に説明する．第１図において、（１
）は大型の碍管の素材となる分割された単体の一つであ
る陶磁器体、（２）はその接合端部を凹状に形成した接
合部である．陶磁器体（１）は焼成済みのものであって
も、あるいは未焼成の乾燥状態のものであってもよい．
（３）はこの接合部（２）に置かれた接合用のテープで
ある．このテープ（３）は好まし《は陶磁器体（１）の
表面に被覆されている釉薬と同一組織よりなる釉薬粉末
とメチルセルロース、セロゲン、ワセリン、プチルカル
ビトール等の有機質のバインダーとを例えば重量比で３
：ｌ程度の割合で混練したもので、両者を混合したうえ
で真空混線機で脱気混練し、テープ状に真空押出したも
のである．
本発明においては、このテープ（３）の接合面に載置す
る幅を陶磁器体（１）の接合部（２）の幅の４０〜９０
％好ましくは５０〜７５％とし、かつ第ｌ図に示すよう
にこのテープ（３）を陶磁器体（１）の接合部（２）の
ほぼ中央部に形成された凹部の中央に位置させる．また
テープ（３）は１〜５−、好ましくは１．５〜３一程度
の厚みを持つものとしておく．この場合、テープの厚み
は接合面に載置するテープ幅と関係があり、テープ厚み
が厚いほどテープ幅と接合部（２）の幅との比は小さく
てよい．
このように陶磁器体（１）の接合部（２）にテープ（３
）を置いたうえでその上方に接合すべき他方の陶磁器体
（１）を載せる．この他方の陶磁器体（１）の接合部も
上記の凹部に対応する形状の凸部としておくものとする
．このとき、テープ（３）を１〜５一程度の厚みを持つ
ものとしておけば、十分なクツシツン効果を発揮して陶
磁器体（１）、（１）の接合面の損傷を防止することが
できる．
この陶磁器体（１）、（１）の接合部（２）間にテープ
（３）を介在させた状態で焼成炉中で焼成を行うと、テ
ーブ（３）は含有される有機質のバインダー成分を熱分
解させつつ釉薬成分を溶融させる．またこれと同時に上
方の陶磁器体（１）の重量によって溶けた釉薬が左右均
等に横方向に拡散し、第２図のように接合部（２）の全
面にわたって強固な接合が完成される．ここで重要とな
るのが前記したテープ（３）の幅と位置であり、本発明
ではテープ（３）の幅を接合部（２）の幅の４０〜９０
％好ましくは５０〜７５％としたので、焼成時にも溶け
た釉薬が接合部（２）から大きく外側へ流れ出すことが
なく、釉グレと呼ばれる欠陥を生ずることが防止される
．このときテープ（３）の幅を接合部（２）の幅の４０
％未満とすると、上方の陶磁器体（１）を載せたときに
相互の芯を出すことが難し《なるとともに、横方向への
拡散が不十分となって接合部（２）の全体を均一に接合
することが困難となり、逆に９０％より大きくすると釉
グレが生じ易くなる．またテープ（３）を接合部（２》
の中央に正しく位置させないと、片側だけに溶けた釉薬
が流れる欠点を生じる．
なお、テープ（３）の幅とその好ましい厚みとの間には
前述のとおりもちろん相関関係があるが、厚みをｌｓｓ
未満とすると前記したクッシッン作用が不足し、５閣を
越すとその幅を接合部（２）の幅の４０％以下まで狭く
する必要が生ずるのでやはり好ましくない．
このように本発明によれば単にテープ（３）を接合部（
２）の凹部の中央に前述のとおり接合部（２）と特定の
関係を満たして介在させて焼成するだけで、複数の単体
よりなるｖ４磁器体（１）、（１）を強固に一体的に接
合することができる．
（発明の効果）
以上に説明したように、本発明によれば従来のように陶
磁器体の接合部に釉薬を繰り返して塗布する必要もなく
、極めて簡単な手数で陶磁器体の接合を行うことができ
、またテープの幅を陶磁器体の接合部の幅の４０〜９０
％とすることにより、接合部の全体に釉薬を均一に拡散
させて接合することができるとともに、外観不良、寸法
不良となる釉グレを生ずることもない．また本発明によ
れば、テープの厚みを調節することによりクツシツン作
用をもたせ、陶磁器体相互の接合面が直接接触すること
による損傷を防止することができる．このように本発明
は特に大型の碍管素材のような陶磁器体を相互に接合す
る場合に有効な方法であるが、これ以外の陶磁器体の接
合にも広く利用できることはいうまでもない．よって本
発明は従来の問題点を解消した陶磁器体の接合方法とし
て、産業の発展に寄与するところは極めて大きいもので
ある．DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for joining ceramic bodies, such as large porcelain tube materials, to each other. (Prior art) For example, when manufacturing large insulator pipes, etc., forming the whole thing by integral molding increases the weight, making it difficult to handle, and also causing problems such as deformation and eccentricity. It is known that the product is divided into a plurality of parts, each of which is molded separately, and the insulating pipe material, which is made up of a plurality of individual parts in a dry state or after firing, is bonded together using an inorganic bonding material. ing. For this reason, a method has conventionally been used in which a bonding glaze (joint glaze), which is an inorganic bonding material, is used to integrate the divided single tube materials by bonding. The thickness of the glaze must be a certain amount. However, applying the glaze for bonding once or twice does not result in the desired amount, so it is necessary to repeat the coating and drying process of applying the glaze to the joint of the ceramic body and drying it 10 to 15 times. It took 15 to 20 minutes to complete the application, and the process was complicated. Therefore, as shown in Japanese Unexamined Patent Publication No. 57-92584, glaze powder is kneaded with an organic binder and formed into a tape shape, and this joining glaze tape is placed on the joints of ceramic bodies to stack the ceramic bodies. A method for joining ceramic bodies has also been proposed in which the ceramic bodies are joined together by firing. However, in this method, the glaze tape for joining is placed on the entire surface of the joint, so the glaze from the tape melted during firing flows out from the joint and drips onto the surface of the product, causing a defect called glaze smearing. There is. Furthermore, if the glaze tape is made thinner in order to reduce the glaze sag phenomenon, it is difficult to obtain a homogeneous bond, and there is also the problem that the bonding surface of the ceramic body is damaged because there is no cushioning effect when the ceramic is stacked. ．． (Problems to be Solved by the Invention) The present invention solves these conventional problems and allows the joining of ceramic bodies to be performed quickly and skillfully. This was completed in order to provide a method for joining ceramic bodies that can prevent both leakage and damage to the joint surfaces of the ceramic bodies to be joined. (Means for Solving III!l) The present invention for solving the above problems involves joining ceramic bodies by interposing a tape made of a mixture of glaze powder and a binder in the joint of the ceramic bodies and firing. The method is characterized in that the width of the tape is 40 to 90% of the width of the joint of the ceramic body, and the tape is fired while being positioned in the center of the recess formed in the joint of the ceramic body. (Example) The present invention will be explained in more detail below with reference to drawings showing the joining of insulator pipes as an example of a one-piece assembly. In Figure 1, (1
) is a ceramic body that is one of the divided pieces that will be the material for a large insulator tube, and (2) is a joint with a concave joint end. The ceramic body (1) may be fired or unfired and dry.
(3) is the joining tape placed on this joint (2). This tape (3) preferably consists of a glaze powder having the same structure as the glaze coated on the surface of the ceramic body (1) and an organic binder such as methylcellulose, cerogen, vaseline, butyl carbitol, etc. in a weight ratio. So 3
After mixing the two, they were degassed and kneaded in a vacuum mixer, and vacuum extruded into a tape shape. In the present invention, the width of this tape (3) to be placed on the joint surface is 40 to 90 times the width of the joint part (2) of the ceramic body (1).
% is preferably 50 to 75%, and the tape (3) is positioned at the center of the recess formed approximately at the center of the joint (2) of the ceramic body (1), as shown in Figure 1. The tape (3) should have a thickness of about 1 to 5 mm, preferably about 1.5 to 3 mm. In this case, the thickness of the tape is related to the width of the tape placed on the joint surface, and the thicker the tape, the smaller the ratio of the tape width to the width of the joint part (2) may be. In this way, attach the tape (3) to the joint (2) of the ceramic body (1).
) and then place the other ceramic body (1) to be joined above it. The joint part of this other ceramic body (1) shall also be a convex part with a shape corresponding to the concave part described above. At this time, if the tape (3) is made to have a thickness of about 1 to 5 mm, it will have a sufficient cushioning effect and prevent damage to the joint surfaces of the ceramic bodies (1) and (1). ．． When firing is performed in a firing furnace with the tape (3) interposed between the joint (2) of the ceramic bodies (1) and (1), the tape (3) removes the organic binder component contained therein. Melts the glaze components while thermally decomposing them. At the same time, due to the weight of the ceramic body (1) above, the melted glaze spreads horizontally evenly on both sides, completing a strong joint over the entire surface of the joint (2) as shown in Figure 2. What is important here is the width and position of the tape (3) described above.
% is preferably 50 to 75%, so that the melted glaze does not flow out significantly from the joint (2) during firing, and defects called glaze blurring are prevented from occurring. At this time, the width of the tape (3) is 40 mm of the width of the joint (2).
If it is less than %, it will be difficult to bring out the mutual core when the upper ceramic body (1) is placed, and the diffusion in the lateral direction will be insufficient, making it difficult to uniformly spread the entire joint (2). It becomes difficult to join, and conversely, if it is greater than 90%, the glaze tends to blur. Also, attach tape (3) to the joint (2)
If the glaze is not placed correctly in the center, the melted glaze will flow only on one side. Note that, as mentioned above, there is of course a correlation between the width of the tape (3) and its preferred thickness, but the thickness is
If it is less than that, the above-mentioned cushioning effect will be insufficient, and if it exceeds five points, it will be necessary to narrow the width to 40% or less of the width of the joint (2), which is also undesirable. In this way, according to the present invention, the tape (3) is simply attached to the joint (
By simply interposing the joint part (2) in the center of the concave part 2) in a specific relationship with the joint part (2) and firing it, the V4 porcelain bodies (1), which are made up of multiple single bodies, can be firmly integrated into one body. It can be joined to. (Effects of the Invention) As explained above, according to the present invention, there is no need to repeatedly apply glaze to the joints of ceramic bodies as in the past, and ceramic bodies can be joined with extremely simple steps. You can also adjust the width of the tape to 40 to 90 times the width of the joint of the ceramic body.
%, it is possible to spread the glaze uniformly over the entire joint for joining, and there is no chance of glaze smearing that would result in poor appearance or poor dimensions. Furthermore, according to the present invention, by adjusting the thickness of the tape, it is possible to provide a cushioning effect and prevent damage caused by direct contact between the joining surfaces of ceramic bodies. As described above, the present invention is a particularly effective method for joining ceramic bodies such as large porcelain tube materials, but it goes without saying that it can also be widely used for joining other ceramic bodies. Therefore, the present invention can greatly contribute to the development of industry as a method for joining ceramic bodies that solves the problems of the conventional methods.
【図面の簡単な説明】[Brief explanation of drawings]
図面はいずれも本発明の一実施例の部分断面を示すもの
で、第ｌ図は陶磁器体の接合部にテープを載せた状態を
示す断面図、第２図は単体の陶磁器体の接合部にテープ
を介在させて焼成した後の陶磁器素体の接合状態を示す
断面図である．（１）：陶磁器体、（２）：接合部、（
３）：テーブ．第
ｌ
１：Ｐ劉Ａジ寝；ミ１ナ１イコデ５
２：将，う舒
３；釡４゜
第
２
図Each of the drawings shows a partial cross-section of an embodiment of the present invention. Figure 1 is a sectional view showing a state in which a tape is placed on the joint of a ceramic body, and Figure 2 is a cross-sectional view showing a state in which a tape is placed on a joint of a single ceramic body. This is a cross-sectional view showing the joined state of ceramic bodies after firing with tape interposed. (1): Ceramic body, (2): Joint, (
3): Table. No. 1 1: P Liu Aji sleep; Mi 1 Na 1 Ikode 5 2: General, U-shu 3; pot 4゜ Fig. 2