JPH04807B2 - - Google Patents
Info
- Publication number
- JPH04807B2 JPH04807B2 JP25765787A JP25765787A JPH04807B2 JP H04807 B2 JPH04807 B2 JP H04807B2 JP 25765787 A JP25765787 A JP 25765787A JP 25765787 A JP25765787 A JP 25765787A JP H04807 B2 JPH04807 B2 JP H04807B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- liquid level
- slurry
- amount
- casting
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 239000000919 ceramic Substances 0.000 claims description 15
- 238000005266 casting Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical group [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/28—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor involving rotation of the mould about a centrifugal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
- B28B1/261—Moulds therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Producing Shaped Articles From Materials (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は複雑な形状の中空セラミツク製品をス
リツプキヤスト法によつて肉厚精度良く製造する
ことができるセラミツク製品の鋳込成形方法に関
するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for casting ceramic products, which allows hollow ceramic products with complex shapes to be manufactured with high wall thickness accuracy by the slip casting method. be.
（従来の技術）
複雑な形状の中空セラミツク製品の成形には吸
水性の内部にスリツプを注入し、所定時間経過後
に鋳型の内部からスリツプを排出するスリツプキ
ヤスト法が一般的であり、着肉厚さは注泥から排
泥までの時間のコントロールによつて管理してい
た。このため多数の鋳型を用いて量産を行う場合
にはそれぞれの鋳型（石膏型）の使用履歴の差や
型温度等による吸水性の変化、更にスラリーの粘
度、温度の変化によつて着肉厚さが一定せず、mm
単位の肉厚管理しか行えないのが現状であつた。
従つてこの方法はノベリテイ、衛生陶器のように
正確な肉厚管理を必要とされないものに適用が限
定されていた。(Prior art) Slip casting is a common method for molding hollow ceramic products with complex shapes, in which a slip is injected into a water-absorbing material and the slip is discharged from the inside of the mold after a predetermined period of time. This was managed by controlling the time from sludge pouring to sludge removal. For this reason, when performing mass production using a large number of molds, the water absorption may change due to differences in the usage history of each mold (gypsum mold), mold temperature, etc., and changes in slurry viscosity and temperature may also affect the wall thickness. The height is not constant, mm
Currently, it is only possible to manage wall thickness in units.
Therefore, the application of this method has been limited to items that do not require accurate wall thickness control, such as novelty and sanitary ware.
ところが最近、自動車用エンジンの排気ポート
の内面をライニングするためのセラミツクポート
の研究が行われ、その成形法としてスリツプキヤ
スト法が注目されつつあるが、セラミツクポート
の場合にはその肉厚が断熱特性やエンジン出力に
影響するために0.1mm以下の厳密な肉厚肉管理が
必要とされ、従来法によつてはこの要求を満たす
ことは到底できない状態にあつた。 However, recently, research has been carried out on ceramic ports for lining the inner surface of the exhaust ports of automobile engines, and the slip cast method is attracting attention as a forming method. Strict wall thickness control of 0.1 mm or less is required because it affects engine output and engine output, and it has been impossible to meet this requirement using conventional methods.
（発明が解決しようとする問題点）
本発明はこのような従来の問題点を解決して、
スリツプキヤスト法によりセラミツクポートのよ
うな形状の複雑な中空セラミツク製品を肉厚精度
良く成形することができるセラミツク製品の鋳込
成形方法を目的として完成されるものである。(Problems to be solved by the invention) The present invention solves these conventional problems,
The aim of this project is to provide a casting method for ceramic products that can form hollow ceramic products with a complicated shape, such as a ceramic port, with high accuracy using the slip casting method.
（問題点を解決するための手段）
本発明は吸水性の鋳型の内部にスラリーを一定
量供給したのちスラリー鋳込口付近の液面降下量
を測定し、その値が所定値に達したときに鋳型内
からスラリーを排泥することを特徴とするもので
ある。(Means for Solving the Problems) The present invention measures the amount of liquid level drop near the slurry pouring port after supplying a certain amount of slurry into the interior of a water-absorbing mold, and when the value reaches a predetermined value. This method is characterized by draining slurry from inside the mold.
以下に本発明を図面を参照しつつ更に詳細に説
明すると、１は石膏型、吸水性樹脂型のような吸
水性材料からなる鋳型、２はそのスラリー鋳込口
に取付けられた液面計である。まず鋳型１の内部
にスラリー３が一定量供給され、そのときの液面
の高さが液面計２によつて測定される。次にスラ
リー３の供給を停止したままの状態を保持する
と、吸水性の鋳型１の内表面に接するスラリー３
の水分が鋳型１に次第に吸着されるとともに鋳型
１の内表面に次第に着肉が生ずる。これとともに
スラリー鋳込口付近のスラリー３の液面は次第に
降下することとなるので、液面計２によつて液面
降下量を測定し、所定値となつたときに鋳型１を
反転させてスラリー３を排泥する。ここで液面降
下を計測する部分の鋳型内面は吸水、着肉しない
ように不透水性の樹脂５、ペイント等でシールす
ることが好ましい。 The present invention will be explained in more detail below with reference to the drawings. 1 is a mold made of a water-absorbing material such as a plaster mold or a water-absorbing resin mold, and 2 is a level gauge attached to the slurry pouring port. be. First, a certain amount of slurry 3 is supplied into the mold 1, and the height of the liquid level at that time is measured by the liquid level gauge 2. Next, when the supply of the slurry 3 is kept stopped, the slurry 3 comes into contact with the inner surface of the water-absorbing mold 1.
The moisture is gradually adsorbed to the mold 1, and the inner surface of the mold 1 gradually becomes ink. At the same time, the liquid level of the slurry 3 near the slurry pouring port will gradually drop, so measure the amount of liquid level drop with the liquid level gauge 2, and when it reaches a predetermined value, turn the mold 1 over. Drain slurry 3. Here, it is preferable that the inner surface of the mold at the part where the liquid level drop is to be measured be sealed with water-impermeable resin 5, paint, etc. to prevent water absorption and buildup.
このように本発明においては液面降下量の測定
が必須であるが、液面計２としては第１図に示さ
れるような導通計形式のもののほか、第２図に示
されるように鋳型１の上部に透明カバー４をセツ
トし、そのパイプ部分の液面高さを光学式の液面
計２によつて測定するようにしてもよい。また鋳
型については鋳型注泥口の内径を絞つて液面降下
量を精度よく測定できる鋳型形状が望ましい。な
お液面降下量と着肉厚さとの間に直線的な相関性
が成立することは次の実施例によつても確認され
た。 In this way, it is essential to measure the amount of liquid level drop in the present invention, and the liquid level gauge 2 may be of the continuity meter type as shown in FIG. 1, or as shown in FIG. A transparent cover 4 may be set on the top of the pipe, and the liquid level height of the pipe portion may be measured by an optical liquid level gauge 2. Furthermore, it is desirable that the mold be shaped so that the inner diameter of the mold pouring port can be narrowed to accurately measure the amount of liquid level drop. It was also confirmed in the following example that there is a linear correlation between the amount of liquid level drop and the deposited thickness.
（実施例）
ポートライナー成形用の内容積が350c.c.の石膏
型のスラリー鋳込口に容積目盛の入つた透明パイ
プをセツトし、チタン酸アルミニウムにポリカル
ボン酸系の解膠材とアクリル系樹脂のバインダー
とを加え、更に19％の水分を加えて、粘度0.5p、
液温22℃としたスラリーを供給した。その後、液
面降下量と着肉厚さとの関係を調べると第３図に
黒丸で示すとおりのほぼ直線的な相関関係が認め
られた。なお着肉が進行するにつれて鋳型１の内
表面積が減少するので、液面降下量に対する着肉
速度は次第に上昇する傾向を示す。(Example) A transparent pipe with a volume scale was set in the slurry inlet of a plaster mold with an internal volume of 350 c.c. for port liner molding, and polycarboxylic acid-based peptizer and acrylic-based peptizer were added to aluminum titanate. Add resin binder and add 19% water to make the viscosity 0.5p,
A slurry with a liquid temperature of 22°C was supplied. After that, when we investigated the relationship between the amount of liquid level drop and the deposited thickness, we found that there was a nearly linear correlation as shown by the black circles in Figure 3. Note that as the ink deposition progresses, the inner surface area of the mold 1 decreases, so the ink deposition rate with respect to the amount of drop in the liquid level tends to gradually increase.
またスラリーの原料中のチタン酸アルミニウム
をコージエライトに代え、水分を22％に増加させ
た場合について同様に液面降下量と着肉厚さとの
関係を調べると第３図に白丸で示すとおりの直線
的な相関関係が認められた。更に原料系をアルミ
ナ100％、ジルコニア100％にそれぞれ変更した場
合にも直線的な相関関係が認められた。従つて液
面降下量が所定値に達したときに鋳型内からスラ
リーを排泥することによつて、着肉厚さを精度良
くコントロールすることができる。 In addition, when the aluminum titanate in the raw material of the slurry is replaced with cordierite and the moisture content is increased to 22%, the relationship between the amount of liquid level drop and the deposited thickness is similarly examined, and a straight line as shown by the white circle in Figure 3 is obtained. A significant correlation was observed. Furthermore, a linear correlation was also observed when the raw material system was changed to 100% alumina and 100% zirconia. Therefore, by draining the slurry from the mold when the amount of liquid level drop reaches a predetermined value, the deposited thickness can be precisely controlled.
（発明の効果）
本発明は以上の説明からも明らかなように、セ
ラミツクボートのような複雑な形状のセラミツク
製品を肉厚精度良くスリツプキヤスト法によつて
成形することを可能としたものであり、各鋳型の
使用履歴の差や型温度等による吸水性能の変化に
影響されることもなく量産に適する利点がある。
よつて本発明は従来の問題点を一掃したセラミツ
ク製品の鋳込成形方法として、産業の発展に寄与
するところは極めて大である。(Effects of the Invention) As is clear from the above description, the present invention makes it possible to mold ceramic products with complicated shapes, such as ceramic boats, with high wall thickness accuracy using the slip cast method. This method has the advantage of being suitable for mass production without being affected by changes in water absorption performance due to differences in the usage history of each mold or mold temperature.
Therefore, the present invention greatly contributes to the development of industry as a casting method for ceramic products that eliminates the problems of the conventional method.
第１図は本発明の工程を説明する断面図、第２
図、第３図はその変形例を示す断面図、第４図は
本発明における液面降下量と着肉厚さとの関係を
示すグラフである。
１：鋳型、２：液面計、３：スラリー。
Figure 1 is a sectional view explaining the process of the present invention, Figure 2
3 is a sectional view showing a modification thereof, and FIG. 4 is a graph showing the relationship between the amount of liquid level drop and the deposited thickness in the present invention. 1: Mold, 2: Level gauge, 3: Slurry.
Claims (1)
したのちスラリー鋳込口付近の液面降下量を測定
し、その値が所定値に達したときに鋳型内からス
ラリーを排泥することを特徴とするセラミツク製
品の鋳込成形方法。 ２ 鋳型がセラミツクポートライナー成形用の鋳
型である特許請求の範囲第１項記載のセラミツク
製品の鋳込成形方法。 ３ 液面計により液面降下量を測定する特許請求
の範囲第１項記載のセラミツク製品の鋳込成形方
法。 ４ 鋳型のスラリー鋳込口に透明パイプを取付け
て液面降下量を測定する特許請求の範囲第１項記
載のセラミツク製品の鋳込成形方法。[Claims] 1. After supplying a certain amount of slurry into a water-absorbing mold, the amount of drop in the liquid level near the slurry pouring port is measured, and when the value reaches a predetermined value, the slurry is removed from inside the mold. A casting method for ceramic products characterized by removing mud. 2. The method of casting a ceramic product according to claim 1, wherein the mold is a mold for molding a ceramic port liner. 3. A method for casting a ceramic product according to claim 1, wherein the amount of liquid level drop is measured by a liquid level gauge. 4. The method of casting a ceramic product according to claim 1, wherein a transparent pipe is attached to the slurry inlet of the mold to measure the amount of liquid level drop.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25765787A JPH0199801A (en) | 1987-10-13 | 1987-10-13 | Method for cast molding of ceramic product |
| DE3888279T DE3888279T2 (en) | 1987-10-13 | 1988-10-12 | Process for the production of ceramic hollow bodies. |
| EP88309526A EP0312322B1 (en) | 1987-10-13 | 1988-10-12 | Processes for producing hollow ceramic articles |
| US07/586,374 US5013500A (en) | 1987-10-13 | 1990-09-21 | Process for producing hollow ceramic articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25765787A JPH0199801A (en) | 1987-10-13 | 1987-10-13 | Method for cast molding of ceramic product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0199801A JPH0199801A (en) | 1989-04-18 |
| JPH04807B2 true JPH04807B2 (en) | 1992-01-08 |
Family
ID=17309295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25765787A Granted JPH0199801A (en) | 1987-10-13 | 1987-10-13 | Method for cast molding of ceramic product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0199801A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100422743B1 (en) * | 1995-08-26 | 2004-06-26 | 도토기키 가부시키가이샤 | Injection molding method of powder and injection molding method used for injection molding and production method of continuous pore porous body used in injection molding type |
| US7937984B2 (en) | 2006-12-29 | 2011-05-10 | Honeywell International Inc. | Gas sensor test system and methods related thereto |
-
1987
- 1987-10-13 JP JP25765787A patent/JPH0199801A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0199801A (en) | 1989-04-18 |
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