JPS5862006A - Manufacture of ceramic shape - Google Patents
Manufacture of ceramic shapeInfo
- Publication number
- JPS5862006A JPS5862006A JP56161631A JP16163181A JPS5862006A JP S5862006 A JPS5862006 A JP S5862006A JP 56161631 A JP56161631 A JP 56161631A JP 16163181 A JP16163181 A JP 16163181A JP S5862006 A JPS5862006 A JP S5862006A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- ceramic
- powder
- molded body
- manufacture
- 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
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Press-Shaping Or Shaping Using Conveyers (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】
本発明はセラミック粉末に離型剤を加えて、成形体にひ
ずみ、り２ツクのないセラミック成形体を製造−するセ
ラミック成形体の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a ceramic molded body, which involves adding a mold release agent to ceramic powder to produce a ceramic molded body that is free from distortion and scratches.
従来の製造方法は、５チの水溶性ポリビニルアルコール
をセラミック粉末に対して５〜１ＯＷｔチ加えて、これ
を粒状にし、そして第１図に示すように金型１にその粒
状にした粉末２をつめ加圧成形して第２図に示すように
成形体３を製造していた。図で４，６は上型と下型であ
る。In the conventional manufacturing method, 5 to 1 OWt of water-soluble polyvinyl alcohol is added to ceramic powder, this is granulated, and the granulated powder 2 is placed in a mold 1 as shown in Fig. 1. A molded body 3 was produced by pressing and molding the molded product as shown in FIG. In the figure, 4 and 6 are the upper mold and the lower mold.
しかしながら、従来の方法では、次のような欠 ・点を
有していた。However, the conventional method had the following drawbacks.
（１）粉末が圧縮される時に金型との摩擦が大きく、成
形体の中心部と周辺部との成形密度が異なり、均一な成
形体が得られない。(1) When the powder is compressed, the friction with the mold is large, and the compacting density differs between the center and the periphery of the compact, making it impossible to obtain a uniform compact.
（２）金型にセラミック粉末が付着し、成形体の金型か
らの離型が悪く、また離型時にクラック。(2) Ceramic powder adheres to the mold, making it difficult to release the molded product from the mold, and cracks occur during release.
カケ、ラミネーション等のひずみが発生し、高品質の成
形体が得られない。Distortion such as chipping and lamination occurs, making it impossible to obtain a high-quality molded product.
（３） 圧縮時の摩擦係数が大きいため、連続成形時
における成形厚みバラツキが大きい。(3) Since the coefficient of friction during compression is large, there is large variation in molding thickness during continuous molding.
（４） 摩擦が大きいため金型の寿命が短かい。(4) The life of the mold is short due to high friction.
従来の製造方法は以上のような欠点を有しながらもセラ
ミック成形体を生産していた。Conventional manufacturing methods have produced ceramic molded bodies even though they have the above-mentioned drawbacks.
本発明はこれらの欠点を除去したセラミック成形体の製
造方法を提案するものである。The present invention proposes a method for manufacturing a ceramic molded body that eliminates these drawbacks.
すなわち、本発明はセラミック粉末の中に離型剤を入れ
、粉末の圧縮時及び成形体の金型からの離型時の摩擦係
数を小さくすることによって均質で高品質のセラミック
成形体を製造するものである。That is, the present invention produces a homogeneous, high-quality ceramic molded body by incorporating a mold release agent into the ceramic powder to reduce the coefficient of friction when the powder is compressed and when the molded body is released from the mold. It is something.
以下、本発明を実施例とともに説明する。The present invention will be explained below along with examples.
微粉したセラミック粉末に６％の水溶性ポリビニルアル
コールを粉末に対して６ｗｔ％、さらに水溶性または有
機性のフッ化樹脂系の離型剤を適量加えて均一混合し、
この粉末を３２メツシーネツトをパスさせ、セラミック
粉末を粒状にする。6% water-soluble polyvinyl alcohol (6% by weight based on the powder) and an appropriate amount of a water-soluble or organic fluorinated resin mold release agent are added to the finely divided ceramic powder and mixed uniformly.
This powder is passed through a 32 mesh net to granulate the ceramic powder.
そして、第１図の金型１に上記粒状にした粉末２をつめ
７００〜１０ｏＯ′ＫＩ／−の圧力で加圧し、セラミッ
ク成形体３を製造する。この成形体を１２ｏＯ〜１４０
０’Ｃで焼成してセラミックの焼結体を製造するのが本
発明の方法である。Then, the granulated powder 2 is packed into the mold 1 shown in FIG. 1 and pressed at a pressure of 700 to 10 oO'KI/- to produce a ceramic molded body 3. This molded body was heated to 12oO~140
The method of the present invention involves producing a ceramic sintered body by firing at 0'C.
本発明の方法は金型からの成形体の取出しが容易で、し
かも連続成形において最も効果があり量産性に優れ、か
つ成形体にクラック、カケ、ラミネーシ胃ンがなく高品
質のセラミック成形体が得られる。The method of the present invention is easy to take out the molded body from the mold, is most effective in continuous molding, has excellent mass productivity, and produces high-quality ceramic molded bodies without cracks, chips, or lamination gas in the molded body. can get.
本発明のフッ化樹脂系の離型剤の離型効果は以上のよう
な利点をもち、高品質のセラミツ〉成形体及びその後の
焼結体を低コストで生産性良く提供することができ、本
発明は工業的価値が大なる丸のである。The mold release effect of the fluorinated resin mold release agent of the present invention has the above-mentioned advantages, and enables high-quality ceramic molded bodies and subsequent sintered bodies to be provided at low cost and with good productivity. The present invention has great industrial value.
第１図は従来方法及び本発明方法を説明すみ乾式成形の
加圧前の状態を示す断面図、第２図は同じく加圧後の状
態の断面図である。
１ 、、、、、、金型、２ 、、、、、、粉末、 ３
、、、、、、成形体。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名＠１
図
し
ン
町
灰
ン×／FIG. 1 is a sectional view showing the state before pressurization of dry molding for explaining the conventional method and the method of the present invention, and FIG. 2 is a sectional view showing the state after pressurization. 1. Mold, 2. Powder, 3.
, , , , Molded object. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Zushin Town Hain ×/
Claims (1)
剤を加えて、乾式成形を行うセラミック成形体の製造方
法。A method for producing ceramic molded bodies by adding a water-soluble resin and a fluorinated resin mold release agent to ceramic powder and performing dry molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56161631A JPS5862006A (en) | 1981-10-09 | 1981-10-09 | Manufacture of ceramic shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56161631A JPS5862006A (en) | 1981-10-09 | 1981-10-09 | Manufacture of ceramic shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5862006A true JPS5862006A (en) | 1983-04-13 |
Family
ID=15738852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56161631A Pending JPS5862006A (en) | 1981-10-09 | 1981-10-09 | Manufacture of ceramic shape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5862006A (en) |
-
1981
- 1981-10-09 JP JP56161631A patent/JPS5862006A/en active Pending
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