JPS6227110A - Method of molding ceramics - Google Patents
Method of molding ceramicsInfo
- Publication number
- JPS6227110A JPS6227110A JP16593285A JP16593285A JPS6227110A JP S6227110 A JPS6227110 A JP S6227110A JP 16593285 A JP16593285 A JP 16593285A JP 16593285 A JP16593285 A JP 16593285A JP S6227110 A JPS6227110 A JP S6227110A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- core
- present
- manufacturing
- water
- 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.)
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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
本発明は、セラミックスの成形方法であるスリップキャ
スト法による中空品又は複雑形状品の製造方法に関づる
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing hollow products or complex-shaped products by slip casting, which is a ceramic molding method.
従来の技術
従来スリップキャスト法を利用して中空品を作成する場
合には排泥法が行われている。また中空鋳物を＆１ｉ造
する場合に中子鋳型が利用されるのと同様に、スリップ
キャスト法においても石膏型などの中子鋳型を利用して
成形が行われている。BACKGROUND OF THE INVENTION Conventionally, when hollow products are manufactured using the slip casting method, a mud removal method is used. Further, in the same way that a core mold is used when making a hollow casting, a core mold such as a plaster mold is also used in the slip casting method.
発明が解決しようとプる問題点
排泥法は離型時の型扱きを考慮した形状が必要であり、
肉厚差のある製品を成形する場合には、石膏に手を加え
るなどの方法により着肉、量をコントロールしなければ
ならないという欠点がある。Problems that the invention seeks to solveThe sludge removal method requires a shape that takes into account mold handling during mold release.
When molding products with different wall thicknesses, there is a drawback that the amount of ink deposits must be controlled by modifying the plaster or other methods.
また、寸法精度の高い成形体を得ることが難しいという
問題点がある。一方、石膏型を中子鋳型として用いた場
合には、セラミックスのグリーン体強度より石膏型の強
度が大きいために、グリーン体が着肉し固化する際の収
縮を阻害し、成形体に割れが生じるという問題点があっ
た。また、中子鋳型に限らず主型においても扱き勾配の
ついていない製品を石膏型で成形する場合には型抜きが
困難であり離型時に割れが発生してしまうという問題点
があった。Another problem is that it is difficult to obtain a molded body with high dimensional accuracy. On the other hand, when a gypsum mold is used as a core mold, the strength of the gypsum mold is greater than that of the ceramic green body, which inhibits the shrinkage of the green body as it inks and hardens, resulting in cracks in the molded body. There was a problem that occurred. Furthermore, when molding a product with a plaster mold that does not have a handling slope not only in the core mold but also in the main mold, there is a problem in that it is difficult to remove the mold and cracks occur when the mold is released.
本発明は上記問題点を解決し、複雑形状のけラミックス
体を成形する際に、スラリー中の水分を吸収することに
よりスラリーを固化させると同時に鋳型強度が低下する
水溶性鋳型を、中子又は主型に利用したセラミックス体
の製造方法を提供することを目的と覆る。The present invention solves the above-mentioned problems, and when molding a ceramic laminated body with a complicated shape, a water-soluble mold, which solidifies the slurry by absorbing water in the slurry and at the same time reduces mold strength, is replaced with a core. Alternatively, the present invention aims to provide a method for manufacturing a ceramic body used as a main mold.
問題点を解決するだめの手段
本発明名らは上記の目的を達成する為に鋭意検討を重ね
、塩類の水溶液による耐火物粒子の結合について研究を
行った結果、塩類及び耐火物の種類を適当に選定すれば
強固な結合の鋳型が１１られ、これを用いてスリップキ
ャストを行なえばスラリーからの吸水によりスラリーを
固化させると同時に、鋳へ°１の強度が低下りる性質を
右する鋳型を得られることが分った。、寸なわら、水に
対してわずかに溶解するアルミナ１００ｇに対し、粘結
剤として炭酸カリウムを５〜３０９添加した鋳型を中子
に使用することにより、グリーン体の乾燥収縮による割
れを防止し、割れのないグリーン体が１ｑられることが
分った。炭酸カリウムの添加ｍを５〜３０ｇとしたのは
、５ｇ以下の場合乾燥時の強度が低く、３０ｇ以上であ
ると強度が高く多量の水を吸収しないと強度が低下しな
いためである。Means to Solve the Problems In order to achieve the above object, the inventors of the present invention have made extensive studies and conducted research on the bonding of refractory particles using an aqueous solution of salts. If this is selected, a mold with a strong bond will be obtained, and if this is used for slip casting, the slurry will solidify due to water absorption from the slurry, and at the same time, a mold with properties that will reduce the strength of the casting will be obtained. I found out that it can be done. However, by using a mold in which 5~309% of potassium carbonate is added as a binder to 100g of alumina, which is slightly soluble in water, for the core, cracking due to drying shrinkage of the green body is prevented. , it was found that a green body without cracks can be produced by 1q. The reason for setting the addition m of potassium carbonate to 5 to 30 g is because if it is 5 g or less, the strength when dry is low, and if it is 30 g or more, the strength is high and the strength does not decrease unless a large amount of water is absorbed.
以下、実施例により本発明を説明する。The present invention will be explained below with reference to Examples.
実施例１
骨材アルミナ１００ｑに対して、Ｋ２ Ｃ０３１５ｇ、
１−１２０１５ｇを添加して十分に混合した混合物を用
いて中子形状につぎ固めて、乾燥後この中子を利用して
本発明による製造方法で第１図に示づ成形体の製造を行
った。また、従来の排泥法及び石膏型を中子に利用して
同様な成形体の製造を試みた。排泥法により作成したも
のはフランジ部も均肉の成形体となり、内部にピケのあ
るものとなってしまったく第３図）。石膏型を中子に使
用したものは、フランジ部のヒケはなかったが中子を除
去する時期及び除去することがむずかしく成形体がυ１
れてしまった。一方、本発明による製造方法で作成した
成形体は、フランジ部にヒケのない第１図に示すような
成形体が得られた。Example 1 For 100q of aggregate alumina, 15g of K2 C0,
1-12015g was added and thoroughly mixed, the mixture was compacted into a core shape, and after drying, the molded product shown in FIG. 1 was manufactured using the manufacturing method according to the present invention using this core. Ta. We also attempted to manufacture a similar molded body using the conventional sludge removal method and a plaster mold for the core. The flange part of the molded product made by the sludge removal method has a uniform thickness, and there are pickets inside (Fig. 3). There were no sink marks on the flange of the product using a plaster mold for the core, but due to the timing and difficulty of removing the core, the molded product was υ1.
I got lost. On the other hand, the molded body produced by the manufacturing method according to the present invention was as shown in FIG. 1 without sink marks on the flange portion.
実施例２
実施例１と同様に作成した中子を利用して、本発明によ
る製造方法で第４図に示す成形体の製造を行った。また
、従来の排泥法及び石膏型を中子に利用して同様な成形
体の製造を試みた。排泥法により作成したものは、角に
Ｒのついた形状となってしまった。石膏型を中子に使用
したものは、排泥法のようにＲはつかなかったが、実施
例１と同様に中子を除去する時期及び除去することがむ
ずかしく、成形体が割れてしまった。一方、本発明によ
る製造方法で成形したものは、Ｒのつがない割れの発生
しない良好な成形体が１ｒ＃られた。Example 2 Using a core prepared in the same manner as in Example 1, a molded article shown in FIG. 4 was manufactured by the manufacturing method according to the present invention. We also attempted to manufacture a similar molded body using the conventional sludge removal method and a plaster mold for the core. The one created using the sludge removal method had a shape with rounded corners. In the case where a plaster mold was used for the core, R was not attached as in the case of the mud removal method, but as in Example 1, the timing and removal of the core were difficult, and the molded body cracked. . On the other hand, when molded by the manufacturing method of the present invention, a good molded product with no R cracks was obtained.
発明の効果
以上述べた如く、水溶性鋳型をセラミックスのスリップ
キャス１へ成形に用いることにより、中空あるいは肉厚
のＦＡなる複雑形状品を割れ発生の問題なく、しかも精
度良く成形することが可能であり、複相形状のセラミッ
クス部品を一体で成形する方法として極めて有用である
。Effects of the Invention As described above, by using a water-soluble mold to mold a ceramic slip cast 1, it is possible to mold complex-shaped products such as hollow or thick FA without the problem of cracking and with high precision. This method is extremely useful as a method for integrally molding multi-phase ceramic parts.
第１図は、本発明による製造方法の一実施例を示す平面
図、第２図は、第１図のＡ−Ａ断面図、第３図は、従来
法（排泥法）による成形体の断面図、第４図は、本発明
による製造方法の他の実施例を示す平面図、第５図は、
第４図のＢ−８断面図である。
１・・・水溶性鋳型、２・・・セラミックス、３・・・
石膏型。Fig. 1 is a plan view showing an embodiment of the manufacturing method according to the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a plan view showing an embodiment of the manufacturing method according to the present invention. A cross-sectional view, FIG. 4 is a plan view showing another embodiment of the manufacturing method according to the present invention, and FIG.
5 is a sectional view taken along line B-8 in FIG. 4. FIG. 1... Water-soluble mold, 2... Ceramics, 3...
plaster mold.
Claims (1)
よび中子として、粉状または粒状のアルミナ１００ｇに
対して粘結剤として炭酸カリウム５〜３０ｇを含有する
水溶性鋳型を用いることを特徴とするセラミックスの成
形方法。A method for forming ceramics using a water-soluble mold containing 5 to 30 g of potassium carbonate as a binder to 100 g of powdered or granular alumina as the mold and core for forming ceramics by slip casting method. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16593285A JPS6227110A (en) | 1985-07-29 | 1985-07-29 | Method of molding ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16593285A JPS6227110A (en) | 1985-07-29 | 1985-07-29 | Method of molding ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6227110A true JPS6227110A (en) | 1987-02-05 |
Family
ID=15821750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16593285A Pending JPS6227110A (en) | 1985-07-29 | 1985-07-29 | Method of molding ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6227110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009022640A (en) * | 2007-07-23 | 2009-02-05 | Hitachi Ltd | Structure and magnetic resonance imaging system using this structure |
-
1985
- 1985-07-29 JP JP16593285A patent/JPS6227110A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009022640A (en) * | 2007-07-23 | 2009-02-05 | Hitachi Ltd | Structure and magnetic resonance imaging system using this structure |
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