JP3155660B2 - Manufacturing method of ceramic casting mold - Google Patents
Manufacturing method of ceramic casting moldInfo
- Publication number
- JP3155660B2 JP3155660B2 JP05086094A JP5086094A JP3155660B2 JP 3155660 B2 JP3155660 B2 JP 3155660B2 JP 05086094 A JP05086094 A JP 05086094A JP 5086094 A JP5086094 A JP 5086094A JP 3155660 B2 JP3155660 B2 JP 3155660B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- slurry
- ceramic
- casting
- raw material
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セラミック製鋳込成形
型の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to ceramic casting.
The present invention relates to a method for manufacturing a mold .
【０００２】[0002]
【従来の技術】陶磁器製品の成形素地を形成する一手段
として、例えば特開平４−４８６０４号公報に示されて
いるように、成形素地の原料粉体からなる泥漿を多孔質
の鋳込成形型内に加圧状態で供給して、泥漿中の水分を
鋳込成形型の内外の差圧により同成形型の多孔質壁を透
過させて除去し、泥漿中の粉体成分を同成形型の内壁面
に着肉させて所望の形状の成形素地を鋳込成形する方法
がある。当該鋳込成形方法は、複雑な形状の陶磁器製品
の成形素地を容易に成形できること、および成形設備費
が安価なこと等から、各種の陶磁器製品の製造分野で広
く使用されている。当該鋳込成形方法には、一般に石膏
製の鋳込成形型が使用されている。かかる石膏製の鋳込
成形型は非常に安価で大型、複雑形状のものでも作製す
ることができる上優れた自己吸水性を有し、また成形性
および離型性にも優れていることから、広く使用されて
いるものである。2. Description of the Related Art As one means for forming a molding base of a ceramic product, for example, as disclosed in Japanese Patent Application Laid-Open No. 4-48604, a slurry made of raw material powder of a molding base is formed by a porous casting mold. Into the inside of the casting mold by means of a pressure difference between the inside and outside of the casting mold to remove the moisture in the slurry through the porous wall of the casting mold, and to remove the powder component in the slurry from the casting mold. There is a method in which a molding base having a desired shape is cast and formed on the inner wall surface. The cast molding method is widely used in the field of manufacturing various ceramic products because of the ability to easily form a molding base of a ceramic product having a complicated shape and a low cost of molding equipment. Generally, a gypsum casting mold is used in the casting method. Such plaster casting mold very large and expensive, has on excellent self water absorbency can also be produced be of complex shape, since it is excellent in moldability and releasability, It is widely used.
【０００３】しかしながら、石膏製の鋳込成形型は耐圧
強度、耐水性、耐摩耗性が低いこと、気孔の構造が一定
でなくて吸水能力が均等でないこと、寸法精度および面
精度が比較的低いこと等から、鋳込成形速度を高めるた
めの高圧鋳込ができないこと、型から溶け出たイオンが
成型面を劣化させて寸法精度や面精度を低下させるこ
と、型の洗浄時に傷付き易いこと、吸水能力が均等でな
いので成形時間の管理等成形時の管理が困難である等の
問題がある。このため、鋳込成形では、製造部品を大量
に成形する分野への適用が困難で、現状では少量多品種
の部品の成形への適用に留まっている。However, gypsum cast molds have low pressure resistance, low water resistance and low abrasion resistance, non-uniform pore structure and uneven water absorption capacity, and relatively low dimensional accuracy and surface accuracy. For this reason, high-pressure casting to increase the casting speed cannot be performed, ions that have melted out of the mold degrade the molding surface and reduce dimensional accuracy and surface accuracy, and the mold is easily damaged during cleaning. In addition, there is a problem that it is difficult to control the molding time, such as the molding time, because the water absorption capacity is not uniform. For this reason, it is difficult to apply the cast molding to the field of molding a large number of manufactured parts, and at present, it is limited to the application to the molding of a small number and variety of parts.
【０００４】これらの問題に対処するため、刊行物「NI
KKEI MECHANICAL 1990.12.24（第６８頁〜第７５頁）」
には、多孔質セラミックからなるセラミック製の鋳込成
形型の提案がなされている。To address these issues, the publication NI
KKEI MECHANICAL 1990.12.24 (Pages 68 to 75) "
Has proposed a ceramic casting mold made of a porous ceramic.
【０００５】[0005]
【発明が解決しようとする課題】ところで、鋳込成形型
においては、型本体の成形型面と外周面間の厚みが均等
で無いことが多く、特に複雑な形状の成形素地を成形す
るための鋳込成形型では型本体の成形型面と外周面間の
厚みが各部位により大きく異なるものである。このた
め、セラミック製の鋳込成形型においては、多孔質の型
本体の気孔の構造および孔径を適宜に設定して気孔を均
等なものとすることができるとはいえ、成形型面に対応
する部位毎に吸水性が異なることになり、依然として成
形時間等成形時の管理が困難である等の問題がある。従
って、本発明の目的は、型本体の成形型面の全面の吸水
性を略均等にして、鋳込成形時の成形時間等成形上の管
理を容易にし得るセラミック製鋳込成形型を提供するこ
とにある。Incidentally, in the casting mold, the thickness between the mold surface and the outer peripheral surface of the mold body is often not uniform, and particularly for molding a molding base having a complicated shape. In the casting mold, the thickness between the mold surface and the outer peripheral surface of the mold body greatly differs depending on each part. For this reason, in the ceramic casting mold, although the pore structure and pore diameter of the porous mold body can be appropriately set and the pores can be made uniform, it corresponds to the mold surface. There is a problem that the water absorption differs for each part, and it is still difficult to control the molding time and the like at the time of molding. Accordingly, an object of the present invention is to a water absorption of the entire surface of the mold surface of the mold body in a substantially uniform, provide ceramic casting mold that can facilitate management of the molding time, and the like molded during casting there in this <br/> and that.
【０００６】[0006]
【課題を解決するための手段】本発明は、セラミック製
鋳込成形型、特に、多孔質セラミックからなる型本体の
内周壁が成形型面に形成されていて、前記型本体の肉部
内に、同型本体の肉部を形成するセラミック粒子の粒子
径より大きい粒子径のセラミック粒子群の粗粒子部にて
構成されて外部へ連通する所定の大きさの高透水性部を
有し、同高透水性部の周面と前記成形型面間の厚みが略
同一厚みに形成されているセラミック製鋳込成形型を製
造する方法に関するものである。 SUMMARY OF THE INVENTION The present invention relates to a ceramic material.
Casting molds, in particular, the inner peripheral wall of the mold body made of porous ceramics have been formed on the mold surface, within the wall portion of the mold body, the particles of the ceramic particles forming the wall portion of the same type body
In the coarse particle part of the ceramic particle group with a particle size larger than the diameter
A ceramic cast molding having a high water permeable portion having a predetermined size which is configured and communicated to the outside, and in which the thickness between the peripheral surface of the high water permeable portion and the molding die surface is formed to be substantially the same thickness. Made mold
It relates to a method of manufacturing.
【０００７】しかして、本発明に係るセラミック製鋳込
成形型の製造方法においては、粒子径を異にする各粘土
含有陶磁器用原料粉体を水と混練して粒子径の小さい原
料粉体からなる第１の泥漿と、粒子径の大きい原料粉体
からなる第２の泥漿とを調製し、先づ前記第１の泥漿を
透水性の元型内に加圧状態で所定量供給し、次いで前記
第２の泥漿を前記元型内に所定量供給して、同元型内に
成形された成形素地の肉部内に外部に連通する所定の大
きさの粗粒子部からなる高透水性部を形成するものであ
る。 [0007] Thus, the ceramic casting according to the present invention.
In the manufacturing method of the mold, each clay with different particle size
The raw material powder for ceramics is kneaded with water
First slurry composed of raw material powder and raw material powder having a large particle diameter
A second slurry consisting of:
A predetermined amount is supplied in a pressurized state into a permeable original mold, and then the
A predetermined amount of the second slurry is supplied into the original mold, and the second slurry is supplied into the original mold.
A predetermined size communicating with the outside in the meat portion of the molded body
Forming a highly permeable portion composed of coarse particles
You.
【０００８】本発明に係るセラミック製鋳込成形型の製
造方法においては、上記したように成形された成形素地
を、必要により乾燥し、かつ、乾燥後に焼成するもので
ある。 [0008] Production of a ceramic casting mold according to the present invention
In the manufacturing method, the molding base formed as described above is used.
Is dried if necessary, and fired after drying.
is there.
【０００９】[0009]
【発明の作用・効果】本発明に係る製造方法で得られる
セラミック製鋳込成形型においては、セラミック質特有
の高性能の特性、すなわち耐圧性、耐水性および耐摩耗
性に優れ、気孔の構造が均一であり、寸法精度および面
精度が高いこと等から、鋳込成形速度を高めるべく高圧
鋳込みができること、型からの溶出物がなくて同溶出物
による成形型面の劣化に起因する寸法精度や面精度の低
下がなく、型の洗浄時に傷付きが防止されると言う多く
の特性を有している。その上、当該セラミック鋳込成形
型においては、型本体の肉部内の粗粒子部からなる高透
水性部の周面と成形型面間の厚みが略同一厚みに形成さ
れていることから、泥漿中の水分の吸水能力が成形型面
の全面において略均一であって、同成形型面に対する泥
漿中の原料粉体の着肉性、透水性が均等となり、得られ
る成形素地の特性が向上するとともに成形時の成形管理
が極めて容易となる。The operation and effect of the present invention The ceramic cast mold obtained by the production method according to the present invention has excellent high-performance characteristics peculiar to ceramics, that is, excellent pressure resistance, water resistance and wear resistance. Since the pore structure is uniform and the dimensional accuracy and surface accuracy are high, high-pressure casting can be performed to increase the casting speed, and there is no eluate from the mold and the mold surface is degraded by the eluate. There are many characteristics that the dimensional accuracy and the surface accuracy are not reduced and the damage is prevented when the mold is washed. In addition, in the ceramic casting mold, since the thickness between the peripheral surface of the high water permeable portion formed of coarse particles in the wall portion of the mold body and the surface of the molding die is formed to be substantially the same thickness, The water absorption capacity of the inside is substantially uniform over the entire surface of the molding die, and the inking property and water permeability of the raw material powder in the slurry with respect to the molding die surface are uniform, and the characteristics of the obtained molding base are improved. At the same time, molding management during molding becomes extremely easy.
【００１０】また、本発明に係る製造方法によれば、型
本体の肉部内に高透水性部である型本体の肉部内に高透
水性部である粗粒子部を容易に形成することができると
ともに、当該粗粒子部が鋳込成形型の強度を十分に確保
する。 Further, according to the manufacturing method of the present invention, is possible to easily form a coarse particle portion is highly permeable portions in the wall portion of the mold body to the high permeability portion der Ru-mold-wall part of the body to be able to
In both cases, the coarse particles ensure sufficient strength of the casting mold
I do.
【００１１】[0011]
【実施例】（セラミック製鋳込成形型） 図１には本発明の一実施例に係る製造方法により製造し
たセラミック鋳込成形型が示されている。当該鋳込成形
型１０は懸垂碍子の碍子磁器の成形素地を成形するもの
で、下型１１と上型１２とにより構成されている。これ
ら両型１１，１２は本発明の型本体に該当するもので、
乾燥粘土の粉体（平均粒子径１〜５μｍ）５〜４０重量
％と、長石質原料、珪酸質原料、アルミナ質原料、陶
石、蝋石の１または複数の陶磁器用原料の粉体（１〜８
μｍ）９５〜６０重量％とからなり、上下に載置した状
態で内部に鋳込空間部Ｒを構成し、同空間部Ｒの周面が
成形型面１１ａ，１２ａになっている。また、各型１
１，１２の肉部１１ｂ，１２ｂ内にはそれぞれ空間部１
１ｃ，１２ｃが成形されている。各空間部１１ｃ，１２
ｃは連通孔１１ｄ，１２ｄを通して外部に連通している
もので、各空間部１１ｃ，１２ｃの周面と成形型面１１
ａ，１２ａの周面間の厚みが略同一厚みに形成されてい
る。これらの各空間部１１ｃ，１２ｃには、各型１１，
１２の肉部１１ｂ，１２ｂを構成している原料粉体より
粒子径の大きい原料粉体が充填されていて、各空間部１
１ｃ，１２ｃを粗粒子部からなる高透水性部に構成して
いる。 Embodiment (Ceramic Casting Mold) FIG. 1 shows a manufacturing method according to an embodiment of the present invention.
A ceramic casting mold is shown. The casting mold 10 is for molding a molding body of an insulator porcelain of a suspension insulator, and includes a lower mold 11 and an upper mold 12. These two molds 11 and 12 correspond to the mold body of the present invention.
5 to 40% by weight of dry clay powder (average particle diameter 1 to 5 μm) and powder (1 to 4) of one or more ceramic raw materials such as feldspar material, silicate material, alumina material, porcelain stone and wax stone 8
[mu] m) 95 to 60 Ri Do from the weight% constitute the casting space R within a state placed on the top and bottom, the circumferential surface of the space R is in the mold surface 11a, 12a. In addition, each type 1
Each of the space portions 1 in the meat portions 11b and 12b
1c and 12c are formed. Each space 11c, 12
“c” communicates with the outside through the communication holes 11d and 12d.
The thickness between the peripheral surfaces of the a and 12a is formed to be substantially the same. Each of these molds 11,
From the raw material powder constituting the 12 meat portions 11b and 12b
Each space 1 is filled with a raw material powder having a large particle diameter.
1c and 12c are configured as high water permeable portions composed of coarse particles.
I have.
【００１２】当該セラミック鋳込成形型１０において
は、上下両型１１，１２の肉部１１ｂ，１２ｂ内の空間
部１１ｃ，１２ｃが粗粒子部に構成されていて、当該粗
粒子部が本発明の高透水性部を構成しているもので、各
空間部１１ｃ，１２ｃの周面と成形型面１１ａ，１２ａ
間の厚みが略同一厚みに形成されていることから、泥漿
中の水分の吸水能力が成形型面１１ａ，１２ａの全面に
おいて略均一である。従って、同成形型面１１ａ，１２
ａに対する泥漿中の原料粉体の着肉性、透水性が略均等
となり、泥漿中の水分は成形型面１１ａ，１２ａを均等
に透過して各空間部１１ｃ，１２ｃ内の高透水性部であ
る粗粒子部に至り、同空間部１１ｃ，１２ｃの粗粒子部
から連通孔１１ｄ，１２ｄを通して外部に排出される。
得られる成形素地は、泥漿中の水分の透水性が均等であ
ること、および原料粉体の着肉性が均等であること等に
よりその特性が向上し、また成形時の時間の管理等成形
管理が極めて容易となる。In the ceramic casting mold 10, the spaces 11c and 12c in the meat portions 11b and 12b of the upper and lower molds 11 and 12 are formed as coarse particles.
The particle portion constitutes the high water permeable portion of the present invention, and the peripheral surfaces of the spaces 11c and 12c and the mold surfaces 11a and 12a.
Since the thickness between them is substantially the same, the ability to absorb water in the slurry is substantially uniform over the entire surfaces of the mold surfaces 11a and 12a. Therefore, the same mold surface 11a, 12
The inking property and water permeability of the raw material powder in the slurry with respect to a become substantially equal, and the water in the slurry permeates through the mold surfaces 11a and 12a evenly and in the high water permeable portions in the spaces 11c and 12c . Ah
And is discharged to the outside through the communication holes 11d and 12d from the coarse particles in the spaces 11c and 12c.
The resulting green body has improved properties due to the uniform water permeability of the slurry and the uniform inking property of the raw material powder, and the molding management such as management of the molding time. Becomes extremely easy.
【００１３】なお、本発明に係るセラミック製鋳込成形
型においては、上下両型１１，１２の肉部１１ｂ，１２
ｂ内の空間部１１ｃ，１２ｃを、肉部１１ｂ，１２ｂを
構成する粒子群の平均粒子径より大きい粒子径の粒子群
からなる粗粒子部に構成していて、粗粒子部は上記各空
間部１１ｃ，１２ｃを十分に補強した状態で、各空間部
１１ｃ，１２ｃと同様に高透水性部として機能して、同
様の作用効果を奏するのである。In the ceramic casting mold according to the present invention, the meat portions 11b, 12 of the upper and lower molds 11, 12 are provided.
space 11c in b, and 12c, meat portion 11b, and constitute the coarse particles portion consisting of particles of larger particle diameter than the average particle diameter of the particles constituting the 12b, coarse particles section each empty
With the space portions 11c and 12c sufficiently reinforced, they function as high water-permeable portions similarly to the space portions 11c and 12c, and have the same effect.
【００１４】（セラミック製鋳込成形型の製造方法） 図２および図３には、本発明に係るセラミック製鋳込成
形型１０の製造方法が示されている。当該製造方法にお
いては、透水性の第１元型２０ａと第２元型２０ｂとが
使用させる。これら両元型２０ａ，２０ｂは従来の石膏
型であって、第１元型２０ａによりセラミック製鋳込成
形型１０の下型１１が鋳込成形され、また第２元型２０
ｂによりセラミック製鋳込成形型１０の上型１２が鋳込
成形される。当該製造方法で採用される泥漿は、乾燥粘
土の粉体（平均粒子径１〜５μｍ）５〜４０重量％と、
長石質原料、珪酸質原料、アルミナ質原料、陶石、蝋石
の１または複数の陶磁器用原料の粉体（１〜８μｍ）９
５〜６０重量％とからなる適宜のもので、必要によりセ
ルローズ系の造孔剤が添加される。[0014] (ceramic casting mold manufacturing method) FIG. 2 and FIG. 3, method for manufacturing a ceramic casting mold 10 according to the present invention is shown. In the manufacturing method, the first mold 20a and the second mold 20b having water permeability are used. These two molds 20a and 20b are conventional gypsum molds. The lower mold 11 of the ceramic casting mold 10 is cast by the first mold 20a, and the second mold 20 is formed.
By b, the upper mold 12 of the ceramic casting mold 10 is cast-molded. The slurry used in the production method is 5 to 40% by weight of dry clay powder (average particle size of 1 to 5 μm),
Powder (1-8 μm) of one or more porcelain raw materials such as feldspathic raw materials, siliceous raw materials, alumina raw materials, pottery stones, and wax stones
5 to 60% by weight, and if necessary, a cellulosic pore-forming agent is added.
【００１５】第１元型２０ａは、成形型面２１ａを有す
る下型２１と成形型面２２ａを有する上型２２とからな
り、泥漿を下型２１の下端中央部に設けた供給口２１ｂ
から加圧状態、例えば１５ｋｇ／ｃｍ2の圧力で鋳込空
間部Ｒに供給して同空間部Ｒ内を泥漿で満たすととも
に、泥漿をさらに供給しつつ上下両型２１，２２に設け
た排出口２１ｃ，２２ｂから負圧を付与する。これによ
り、鋳込空間部Ｒ内の泥漿中の水分が吸引されて各排出
口２１ｃ，２２ｂから排出されて、泥漿中の原料粉体が
各成形型面２１ａ，２２ａに漸次着肉される。この状態
を所定時間継続した後、鋳込空間部Ｒ内の泥漿中の全て
の原料粉体が着肉する以前に鋳込みを終了して、鋳込空
間部Ｒ内の未乾燥の泥漿を下型２１の供給口２１ｂから
排出する。これにより、肉部１１ｂ内に空間部１１ｃを
有するとともに、同空間部１１ｃから供給口２１ｂに延
びる連通孔１１ｄを有するセラミック製の下型１１の成
形素地が形成され、これを離型して取り出して乾燥後焼
成することにより図１に示す下型１１が形成される。The first mold 20a is composed of a lower mold 21 having a mold surface 21a and an upper mold 22 having a mold surface 22a.
In the pressurized state, for example, a pressure of 15 kg / cm 2 is supplied to the casting space R to fill the space R with the slurry, and the discharge ports provided in the upper and lower molds 21 and 22 while further supplying the slurry. Negative pressure is applied from 21c and 22b. As a result, the water in the slurry in the casting space R is sucked and discharged from the outlets 21c and 22b, and the raw material powder in the slurry is gradually deposited on the mold surfaces 21a and 22a. After this state is continued for a predetermined period of time, the casting is finished before all the raw material powders in the slurry in the casting space R are deposited, and the undried slurry in the casting space R is removed to the lower mold. 21 from the supply port 21b. As a result, a forming body of the lower mold 11 made of ceramic having the space 11c in the meat portion 11b and having the communication hole 11d extending from the space 11c to the supply port 21b is formed. After drying and firing, the lower mold 11 shown in FIG. 1 is formed.
【００１６】第２元型２０ｂは、成形型面２３ａを有す
る下型２３と成形型面２４ａを有する上型２４とからな
り、泥漿を上型２４の側部中央に設けた供給口２４ｂか
ら加圧状態、例えば１５ｋｇ／ｃｍ2の圧力で鋳込空間
部Ｒに供給して同空間部Ｒ内を泥漿で満たすとともに、
泥漿をさらに供給しつつ上下両型２３，２４に設けた排
出口２３ｂ，２４ｃから負圧を付与する。これにより、
鋳込空間部Ｒ内の泥漿中の水分が吸引されて各排出口２
３ｂ，２４ｃから排出されて、泥漿中の原料粉体が各成
形型面２３ａ，２４ａに漸次着肉される。この状態を所
定時間継続した後、鋳込空間部Ｒ内の泥漿中の全ての原
料粉体が着肉する以前に鋳込みを終了して、鋳込空間部
Ｒ内の未乾燥の泥漿を上型２４の供給口２４ｂから排出
する。これにより、肉部１２ｂ内に空間部１２ｃを有す
るとともに、同空間部１２ｃから供給口２４ｂに延びる
連通孔１２ｄを有するセラミック製の上型１２の成形素
地が形成され、これを離型して取り出して乾燥後焼成す
ることにより図１に示す上型１２が形成される。The second mold 20b is composed of a lower mold 23 having a mold surface 23a and an upper mold 24 having a mold surface 24a, and a slurry is supplied from a supply port 24b provided in the center of the side of the upper mold 24. A pressure state, for example, a pressure of 15 kg / cm 2 is supplied to the casting space R to fill the space R with the slurry,
A negative pressure is applied from discharge ports 23b and 24c provided in the upper and lower dies 23 and 24 while further supplying the slurry. This allows
The water in the slurry in the casting space R is sucked and each outlet 2
The raw powder in the slurry discharged from 3b and 24c is gradually deposited on each of the mold surfaces 23a and 24a. After this state is continued for a predetermined time, the pouring is finished before all the raw material powders in the slurry in the casting space R are deposited, and the undried slurry in the casting space R is removed into the upper mold. Discharged from 24 supply ports 24b. As a result, a forming base of the ceramic upper mold 12 having the space portion 12c in the meat portion 12b and the communication hole 12d extending from the space portion 12c to the supply port 24b is formed. After drying and firing, the upper mold 12 shown in FIG. 1 is formed.
【００１７】なお、図２および図３に示す製造方法にお
いては、未着肉状態の泥漿を排出して下型１１および上
型１２の肉部１１ｂ．１２ｂ内に空間部１１ｃ，１２ｃ
を形成して、同空間部１１ｃ，１２ｃを高透水性部に構
成した例について示しているが、本発明に係る製造方法
では下記の手段を採用して、同高透水性部を粗粒子群か
らなる粗粒子部に形成するものである。 In the manufacturing method shown in FIG. 2 and FIG. 3, the unadhered sludge is discharged and the meat portions 11b. Spaces 11c and 12c in 12b
To form, the space portion 11c, there is shown the example in which the high-permeability portion 12c, in the manufacturing method according to the present onset bright adopts the following solutions, coarse particles of the same high permeability section It is formed in a coarse particle portion composed of a group .
【００１８】すなわち、本発明に係る製造方法では、図
２および図３に示す第１元型２０ａと第２元型２０ｂを
使用するものであるが、泥漿として粒子径を異にする粘
土含有陶磁器用原料粉体を採用して、これらの各原料粉
体を水と混練して粒子径の小さい原料粉体からなる第１
の泥漿と、粒子径の大きい原料粉体からなる第２の泥漿
とを調製し、先づ第１の泥漿を各元型２０ａ，２０ｂの
鋳込空間部Ｒ内に加圧状態で所定量供給して、肉部１１
ｂ．１２ｂ内に空間部１１ｃ，１２ｃを有する下型１１
および上型１２を成形し、次いで第２の泥漿を所定量各
元型２０ａ，２０ｂ内にある下型１１および上型１２内
に空間部１１ｃ，１２ｃに供給する。この間、空間部１
１ｃ，１２ｃ内の各泥漿には負圧を付与して漸次着肉さ
せ、泥漿中の全ての粉体の着肉が完了するまで継続す
る。[0018] That is, in the manufacturing method according to the present onset bright, but is to use the first original mold 20a and the second original type 20b shown in FIGS. 2 and 3, having different clay containing particle diameter as mud Each of these raw material powders is kneaded with water using a raw material powder for ceramics, and the first raw material powder having a small particle diameter is used.
And a second slurry composed of a raw material powder having a large particle diameter are prepared, and a first amount of the first slurry is first supplied to the casting space R of each of the molds 20a and 20b in a pressurized state. And meat part 11
b. Lower mold 11 having space portions 11c and 12c in 12b
And the upper mold 12 are formed, and then a predetermined amount of the second slurry is injected into the lower mold 11 and the upper mold 12 in each of the master molds 20a and 20b .
To the spaces 11c and 12c . During this time, the space 1
Negative pressure is applied to each of the slurry in 1c and 12c to gradually incinerate the meat, and the operation is continued until all the powders in the slurry are completely inlaid.
【００１９】これにより、第１元型２０ａにおいては、
肉部１１ｂ内の空間部１１ｃに対応する部位に粗粒子群
からなる粗粒子部１１ｅが形成されるとともに、同粗粒
子部１１ｅから供給口２１ｂに延びる連通孔１１ｄを有
するセラミック製の下型の成形素地が形成され、これを
離型して取り出して乾燥後焼成することにより、図１に
示す下型と同様の下型が形成される。これと同様に、第
２元型２０ｂにおいては、肉部１２ｂ内の空間部１２ｃ
に対応する部位に粗粒子群からなる粗粒子部１２ｅが形
成されるとともに、同粗粒子部１２ｅから供給口２４ｂ
に延びる連通孔１２ｄを有するセラミック製の下型の成
形素地が形成され、これを離型して取り出し焼成するこ
とにより、下型１１および上型１２が形成される。 Thus, in the first mold 20a,
A coarse-grain portion 11e composed of a coarse-grain group is formed in a portion corresponding to the space portion 11c in the meat portion 11b, and a ceramic lower mold having a communication hole 11d extending from the coarse-grain portion 11e to the supply port 21b. A molding base is formed, which is released from the mold, taken out, dried and fired to form a lower mold similar to the lower mold shown in FIG. Similarly, in the second mold 20b, the space portion 12c in the meat portion 12b is provided.
A coarse particle portion 12e composed of a coarse particle group is formed at a portion corresponding to
Is formed, and the lower mold 11 and the upper mold 12 are formed by releasing the mold and taking out and firing it .
【図１】本発明の一実施例に係る製造方法により成形さ
れるセラミック製鋳込成形型の縦断面図である。FIG. 1 is a cross-sectional view of a molding method according to an embodiment of the present invention.
1 is a longitudinal sectional view of a ceramic casting mold to be formed.
【図２】同成形型を構成する下型の製造方法を説明する
石膏製の第１元型の縦断面図である。FIG. 2 is a longitudinal sectional view of a first gypsum mold for explaining a method of manufacturing a lower mold constituting the same mold.
【図３】同成形型を構成する下型の製造方法を説明する
石膏製の第２元型の縦断面図である。FIG. 3 is a longitudinal sectional view of a gypsum second base mold for explaining a method of manufacturing a lower mold constituting the same molding die.
１０…セラミック製鋳込成形型、１１…下型、１２…上
型、１１ａ，１２ａ…成形型面、１１ｂ，１２ｂ…肉
部、１１ｃ，１２ｃ…空間部（高透水性部）、１１ｄ，
１２ｄ…連通孔、１１ｅ，１２ｅ…粗粒子部、２０ａ，
２０ｂ…石膏製の元型、２１，２３…下型、２２，２４
…上型。10: Ceramic casting mold, 11: Lower mold, 12: Upper mold, 11a, 12a: Mold surface, 11b, 12b: Meat, 11c, 12c: Space (highly permeable part), 11d,
12d: communication hole, 11e, 12e: coarse particle portion, 20a,
20b: Gypsum base mold, 21, 23 ... Lower mold, 22, 24
… Upper type.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B28B 1/00 - 1/54 ──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. 7 , DB name) B28B 1/00-1/54
Claims (1)
が成形型面に形成されていて、前記型本体の肉部内に、
同型本体の肉部を形成するセラミック粒子の粒子径より
大きい粒子径のセラミック粒子群の粗粒子部にて構成さ
れて外部へ連通する所定の大きさの高透水性部を有し、
同高透水性部の周面と前記成形型面間の厚みが略同一厚
みに形成されているセラミック製鋳込成形型の製造方法
であり、粒子径を異にする各粘土含有陶磁器用原料粉体
を水と混練して粒子径の小さい原料粉体からなる第１の
泥漿と、粒子径の大きい原料粉体からなる第２の泥漿と
を調製し、先づ前記第１の泥漿を透水性の元型内に加圧
状態で所定量供給し、次いで前記第２の泥漿を前記元型
内に所定量供給して、同元型内に成形された成形素地の
肉部内に外部に連通する所定の大きさの粗粒子部からな
る高透水性部を形成し、これらの成形素地を必要により
乾燥した後焼成することを特徴とするセラミック製鋳込
成形型の製造方法。 1. A inner peripheral wall of the mold body made of porous ceramics have been formed on the mold surface, within the wall portion of the mold body,
From the particle size of the ceramic particles forming the meat part of the same type body
Composed of coarse particles of large ceramic particles
Having a high water permeability portion of a predetermined size communicating with the outside,
Method for manufacturing the high-permeability portion of the peripheral surface and the mold surface between the thickness Rousset ceramic manufactured casting mold is formed in a substantially same thickness of
The raw material powder for each clay-containing ceramic with different particle diameter
Is kneaded with water to form a first raw material powder having a small particle diameter.
A slurry and a second slurry composed of a raw material powder having a large particle diameter.
And pressurizing the first slurry into a permeable mold first.
The second slurry is then supplied to the master mold in a predetermined amount.
Into the mold, and supply the molding base in the same mold.
It consists of a coarse-grained part of a predetermined size that communicates with the outside in the meat part.
Forming a highly permeable part,
Ceramic casting characterized by drying and firing
Manufacturing method of mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05086094A JP3155660B2 (en) | 1994-03-22 | 1994-03-22 | Manufacturing method of ceramic casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05086094A JP3155660B2 (en) | 1994-03-22 | 1994-03-22 | Manufacturing method of ceramic casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07256616A JPH07256616A (en) | 1995-10-09 |
| JP3155660B2 true JP3155660B2 (en) | 2001-04-16 |
Family
ID=12870486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05086094A Expired - Fee Related JP3155660B2 (en) | 1994-03-22 | 1994-03-22 | Manufacturing method of ceramic casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3155660B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3482845B1 (en) * | 2017-11-13 | 2023-12-13 | Dorst Technologies GmbH & Co. KG | Moulded part, mould and method of moulding a green body |
| JP6839325B1 (en) * | 2019-09-02 | 2021-03-03 | 日本碍子株式会社 | Manufacturing method of molded product |
-
1994
- 1994-03-22 JP JP05086094A patent/JP3155660B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07256616A (en) | 1995-10-09 |
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