JPH07186116A - Molding of ceramics - Google Patents
Molding of ceramicsInfo
- Publication number
- JPH07186116A JPH07186116A JP5347789A JP34778993A JPH07186116A JP H07186116 A JPH07186116 A JP H07186116A JP 5347789 A JP5347789 A JP 5347789A JP 34778993 A JP34778993 A JP 34778993A JP H07186116 A JPH07186116 A JP H07186116A
- Authority
- JP
- Japan
- Prior art keywords
- molding
- ceramics
- curable resin
- curing
- 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.)
- Pending
Links
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Producing Shaped Articles From Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセラミックスの成形法に
関し、更に詳しくは、複雑形状のセラミック成形体を短
時間で簡便に歩留りよく成形するセラミックスの成形法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramics molding method, and more particularly, to a ceramics molding method for molding a ceramic molded body having a complicated shape simply in a short time with a good yield.
【０００２】[0002]
【従来の技術】セラミックスの成形法としては、加圧成
形、押出成形等の種々の方法が従来から行われている。
しかし、加圧成形、射出成形、押出成形等の成形方法で
は金型が必要であり、金型製作のために時間を割かねば
ならない上、生産コストも増加する。また、加圧成形、
押出成形等の成形方法は、成形のみで所望の形状のもの
を得ることは極めて困難であり、特に、複雑形状のもの
であればなおさら困難であり、最終的には成形後の加工
が必須となっている。また、セラミックスの高硬度特性
から加工は容易でなく、成形後加工がセラミックスの生
産コスト上昇の一因となっている。昨今のセラミックス
の需要側の要望は、多様化及び高機能化による少量多品
種の傾向にあるため、製作費用の低減化は勿論、一製品
の製作に費やす製作時間の短縮化が要望されている。前
記加圧成形法等における成形後の加工を極力少なくし
て、成形時間の短縮を図るニヤネット成形として、スリ
ップキャスト成形法等が行われている。2. Description of the Related Art As a method of molding ceramics, various methods such as pressure molding and extrusion molding have been conventionally performed.
However, a molding method such as pressure molding, injection molding, and extrusion molding requires a mold, which requires time for manufacturing the mold and also increases the production cost. Also, pressure molding,
With a molding method such as extrusion molding, it is extremely difficult to obtain a desired shape only by molding, especially if it has a complicated shape, it is even more difficult, and finally processing after molding is essential. Has become. Further, the high hardness characteristics of ceramics make it difficult to process them, and the post-molding process is one of the causes of an increase in the production cost of ceramics. Recent demands for ceramics on the demand side tend to be small quantities and various types due to diversification and high functionality, so it is demanded not only to reduce the manufacturing cost but also to shorten the manufacturing time spent for manufacturing one product. . A slip cast molding method or the like is performed as a near-net molding for reducing the molding time by minimizing the processing after molding in the pressure molding method or the like.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記ニ
ヤネット成形のスリップキャスト成形は石膏型、樹脂型
等の成形型を製作する必要があり、前記加圧成形等に比
して時間及び経費が大幅に低減されるものでない。ま
た、成形時間はスリップの着肉速度に依存するため、任
意に制御することは困難である。更に、乾燥工程が必須
であり、複雑形状の成形体では乾燥工程でヒビ割れ等の
欠陥の発生が避けられず、製品歩留りが低下するおそれ
もある。発明者は、上記セラミックス成形の現状に鑑
み、成形時間及び費用を著しく低減させるべく、セラミ
ックス成形、特に、ニヤネット成形で、簡便、且つ、短
時間で、歩留りよくセラミック成形体、特に、複雑な形
状のセラミック成形体を得る成形方法について鋭意検討
した結果、本発明を完成した。However, in the slip cast molding of the near net molding, it is necessary to manufacture a molding die such as a plaster mold or a resin mold, which requires much time and cost compared with the pressure molding. It will not be reduced. Further, since the molding time depends on the slip inking speed, it is difficult to control it arbitrarily. Further, a drying step is indispensable, and in the case of a molded article having a complicated shape, generation of defects such as cracks is unavoidable in the drying step, which may reduce the product yield. In view of the present situation of the above-mentioned ceramics molding, the inventor, in order to significantly reduce the molding time and cost, ceramics molding, particularly near-net molding, is a simple, short-term, and high-yield ceramic molding, especially a complicated shape. The present invention has been completed as a result of extensive studies on a molding method for obtaining the ceramic molded body.
【０００４】[0004]
【課題を解決するための手段】本発明によれば、真空注
型装置内にシリコーンゴム製成形型を設置し、該成形型
にセラミックス原料粉末と硬化性樹脂とを脱泡攪拌混合
して得た脱泡混合粉末スラリーを真空鋳込成形した後、
常圧下で硬化させてセラミック成形体を得ることを特徴
とするセラミックスの成形法が提供される。上記硬化性
樹脂は、２液混合タイプ硬化性樹脂であり、真空下にシ
リコンゴム性成形型にセラミックス原料粉末とのスラリ
ーを鋳込み後、常圧下に加熱または感光硬化しセラミッ
ク成形体が得られる。According to the present invention, a silicone rubber molding die is installed in a vacuum casting apparatus, and the ceramic raw material powder and the curable resin are mixed by defoaming stirring and mixing. After vacuum casting the defoamed mixed powder slurry,
Provided is a method for molding ceramics, which comprises curing under normal pressure to obtain a ceramic molded body. The above-mentioned curable resin is a two-liquid type curable resin, and after a slurry of ceramic raw material powder is cast into a silicon rubber mold under vacuum, it is heated or photocured under normal pressure to obtain a ceramic molded body.
【０００５】[0005]
【作用】本発明は上記のように構成され、シリコーンゴ
ム製型を用いるため、真空注型装置を用いて短時間に複
雑形状の多種様々な成形体を得るることができる。即
ち、シリコーンゴムを用いてマスターモデルから型採り
するため、複雑形状のセラミック成形体であっても、自
在に、短時間で成形型を作製することができる。また、
セラミック成形のバインダーとして２液混合タイプ等の
硬化性樹脂を用いることにより、真空注型装置内で鋳込
成形した後、加熱して硬化させるため、乾燥工程を省略
することができ、成形時間が著しく短縮され、また、ヒ
ビ割れ等の欠陥の発生も低減され、成形歩留が向上す
る。Since the present invention is constructed as described above and uses the silicone rubber mold, it is possible to obtain various molded products having complicated shapes in a short time by using the vacuum casting device. That is, since a mold is taken from a master model using silicone rubber, a molding die can be freely produced in a short time even for a ceramic molding having a complicated shape. Also,
By using a curable resin such as a two-liquid mixed type as a binder for ceramic molding, the resin is cast and molded in a vacuum casting machine and then heated and cured, so that the drying step can be omitted and the molding time can be reduced. It is significantly shortened, the occurrence of defects such as cracks is reduced, and the molding yield is improved.
【０００６】以下、本発明について詳細に説明する。本
発明の真空注型装置は、通常の真空注型に用いられる注
型用ノズル等を備えた密閉減圧可能な装置を用いること
ができ、特に制限されるものでない。本発明で用いるシ
リコーンゴム製成形型は、木、ＡＢＳ樹脂等で作成した
所定形状のマスターモデルから、シリコーンゴムを用い
て型採りすることにより、短時間で簡便に得ることがで
きる。シリコーンゴムとしては、一般に成形型に用いる
耐薬品性、耐溶剤性に優れ、且つ耐熱性が高く低圧縮永
久ひずみ等の特性を有する一般的なものを用いることが
できる。シリコーンゴムは流動性に優れ、所定形状の細
部まで的確に型採りすることができるため、特に、複雑
な形状体であっても不都合が生じることがなく、所望形
状の成形型が形成される。そのため、複雑形状のセラミ
ック成形体もニヤネット成形として容易に得ることがで
きる。The present invention will be described in detail below. The vacuum casting apparatus of the present invention may be a vacuum depressurizing apparatus equipped with a casting nozzle or the like used in ordinary vacuum casting, and is not particularly limited. The silicone rubber molding die used in the present invention can be easily obtained in a short time by using a silicone rubber from a master model of a predetermined shape made of wood, ABS resin or the like. As the silicone rubber, it is possible to use a general silicone rubber that is generally used in a molding die, has excellent chemical resistance and solvent resistance, and has high heat resistance and low compression set. Silicone rubber is excellent in fluidity and can accurately take the details of a predetermined shape. Therefore, even if it has a complicated shape, no inconvenience occurs and a molding die having a desired shape is formed. Therefore, a ceramic molded body having a complicated shape can be easily obtained as near net molding.
【０００７】本発明に用いられるセラミックス原料粉末
としては、Ａｌ2 Ｏ3 、ＺｒＯ2 等の酸化物セラミック
ス、ＳｉＣ、Ｓｉ3 Ｎ4 、ＴｉＢ2 等の炭化物、窒化物
または硼化物といったいわゆる非酸化物セラミックス及
びそれらの複合セラミックス等一般的なセラミックス粉
末のいずれも特に制限されることなく適用することがで
きる。目的とするセラミック製品に応じて適宜選択する
ことができる。また、上記セラミック原料粉末の平均粒
径も特に制限されず、従来の鋳込成形に用いられる粉末
と同様に、通常、平均粒径０．１〜１００μｍ、好まし
くは０．５〜３０μｍのセラミック粉末を用いることが
できる。The ceramic raw material powder used in the present invention includes oxide ceramics such as Al 2 O 3 and ZrO 2 , so-called non-oxides such as carbides such as SiC, Si 3 N 4 and TiB 2 , nitrides or borides. Any of general ceramic powders such as ceramics and composite ceramics thereof can be applied without particular limitation. It can be appropriately selected according to the intended ceramic product. The average particle size of the ceramic raw material powder is also not particularly limited, and is a ceramic powder having an average particle size of usually 0.1 to 100 μm, preferably 0.5 to 30 μm, like the powder used in conventional cast molding. Can be used.
【０００８】本発明のセラミックス原料粉末スラリー
は、上記セラミックス原料粉末と、硬化性樹脂からなる
バインダーとを攪拌混合して得ることができる。硬化性
樹脂としては、２液混合タイプや感光性の硬化性樹脂を
挙げることができる。２液混合タイプ硬化性樹脂として
は、一般に真空注型法において使用されている主剤と硬
化剤とからなるものを用いることができ、通常、主剤と
してエポキシ樹脂、ウレタン樹脂をそのまま用い、硬化
剤としてアミン、酸無水物等を用いる。上記セラミック
ス原料粉末及び硬化性樹脂からなるスラリーは、セラミ
ックス原料粉末を固形分濃度として５０〜８０重量％含
有するように調整する。固形分濃度が５０重量％未満で
あると、成形体の密度が下がり焼結特性低下の原因とな
り、また、８０重量％を超えるとスラリー粘度が上昇し
鋳型細部までスラリーが行き渡らなくなり好ましくな
い。また、スラリーの粘性は１０００ｃｐｓ以下が好ま
しい。１０００ｃｐｓを超えるとスラリーの流動性が乏
しくなり、鋳型細部まで行き渡りにくくなるためであ
る。The ceramic raw material powder slurry of the present invention can be obtained by stirring and mixing the ceramic raw material powder and a binder made of a curable resin. Examples of the curable resin include a two-liquid mixed type and a photosensitive curable resin. As the two-component mixed type curable resin, a resin composed of a main agent and a curing agent generally used in a vacuum casting method can be used. Usually, an epoxy resin or a urethane resin is used as the main agent as it is, and a curing agent is used. An amine, an acid anhydride or the like is used. The slurry composed of the ceramic raw material powder and the curable resin is adjusted to contain the ceramic raw material powder in a solid content concentration of 50 to 80% by weight. When the solid content concentration is less than 50% by weight, the density of the molded product is lowered, which causes deterioration of the sintering characteristics, and when it exceeds 80% by weight, the slurry viscosity increases and the slurry is not spread to the mold details, which is not preferable. The viscosity of the slurry is preferably 1000 cps or less. This is because if it exceeds 1000 cps, the fluidity of the slurry becomes poor and it becomes difficult to spread the details of the mold.
【０００９】次いで、本発明の成形工程を順次説明す
る。所定混合比で上記セラミックス原料粉末及び硬化性
樹脂バインダーを適宜秤量して分散攪拌混合する。バイ
ンダーとして２液混合タイプ硬化性樹脂を用いる場合
は、主剤とは別個に、セラミックス原料粉末を上記バイ
ンダー成分の硬化剤に加えて予め分散撹拌混合する。そ
の後、約１〜２ｔｏｒｒに減圧した真空注型装置内に、
上記のセラミックス原料粉末及び硬化性樹脂バインダー
からなる混合物をセットして予備脱泡した後、十分に攪
拌混合して真空減圧脱泡セラミックス原料粉末スラリー
を調製する。また、２液混合タイプ硬化樹脂バインダー
にあっては、主剤成分と、予めセラミックス原料粉末を
分散混合した硬化剤成分とを、別々に上記と同様に減圧
した真空注型装置内にセットして予備脱泡し、その後、
それぞれをその装置内で混合撹拌して減圧脱泡セラミッ
クス原料粉末スラリーを調製する。Next, the molding process of the present invention will be sequentially described. The ceramic raw material powder and the curable resin binder are appropriately weighed at a predetermined mixing ratio, and dispersed and stirred and mixed. When a two-component mixed type curable resin is used as the binder, the ceramic raw material powder is added to the above-mentioned binder component curing agent separately from the main agent and dispersed and stirred in advance. After that, in a vacuum casting device depressurized to about 1 to 2 torr,
A mixture of the above ceramic raw material powder and a curable resin binder is set, preliminarily defoamed, and then sufficiently stirred and mixed to prepare a vacuum reduced pressure defoamed ceramic raw material powder slurry. In the case of the two-component mixed type cured resin binder, the main component and the curing agent component in which the ceramic raw material powder is dispersed and mixed in advance are separately set in the vacuum casting device whose pressure is reduced in the same manner as described above, and the spare is prepared. Defoam and then
Each is mixed and stirred in the apparatus to prepare a vacuum degassed ceramic raw material powder slurry.
【００１０】次いで、１〜２ｔｏｒｒの真空注型装置内
に、上記のようにして形成したシリコーンゴム製成形型
をセットし、調製した脱泡セラミックス原料粉末スラリ
ーをそのシリコーンゴム製成形型に注入する。スラリー
注入後、装置内を大気圧とするか、または、シリコーン
ゴム製成形型を大気圧中に取り出し、スラリーを成形型
内の細部にまでいきわたるようにする。要すれば加圧し
て、成形型のより細部にまでスラリーをいきわたらせる
ようにしてもよい。その後、成形型を約６０〜７０℃で
１〜２時間加熱し、バインダー分を硬化させる。硬化
後、シリコーンゴム性成形型から離型して成形体を得
る。プラスチック成形における真空注型用樹脂は、通
常、硬化により収縮率が約１％近くあるのに対し、本発
明においては、セラミックス原料粉末が分散混合されて
いることにより、硬化による収縮が殆ど起きることな
く、寸法精度の高い成形体を得ることができる。Next, the silicone rubber molding die formed as described above is set in a vacuum casting device of 1 to 2 torr, and the prepared defoaming ceramic raw material powder slurry is injected into the silicone rubber molding die. . After injecting the slurry, the inside of the apparatus is brought to the atmospheric pressure, or the silicone rubber mold is taken out to the atmospheric pressure so that the slurry is spread to the details in the mold. If necessary, pressure may be applied so that the slurry is spread to the finer parts of the mold. Then, the mold is heated at about 60 to 70 ° C. for 1 to 2 hours to cure the binder component. After curing, the silicone rubber mold is released to obtain a molded body. The vacuum casting resin in plastic molding usually has a shrinkage ratio of about 1% upon curing, whereas in the present invention, shrinkage due to curing almost occurs because the ceramic raw material powder is dispersed and mixed. It is possible to obtain a molded body with high dimensional accuracy.
【００１１】[0011]
【実施例】以下、本発明を実施例に基づき更に詳細に説
明する。但し、本発明は下記実施例により制限されるも
のでない。 実施例１ セラミックス原料粉末として平均粒径１μｍのＡｌ2 Ｏ
3 ２００ｇに対し、バインダーとして２液混合タイプの
ウレタン樹脂の主剤８７ｇ、硬化剤１１３ｇをそれぞれ
秤量し、硬化剤にＡｌ2 Ｏ3 を加えて撹拌混合した。次
いで、約１〜２ｔｏｒｒに減圧した真空注型装置内に上
記主剤及びＡｌ2 Ｏ3 を分散させた硬化剤を静置して予
備脱泡した。その後、主剤とＡｌ2 Ｏ3 を分散させた硬
化剤とを同様に真空注型装置内で撹拌混合して、脱泡セ
ラミックス原料粉末スラリーを得た。得られたスラリー
を１〜２ｔｏｒｒの真空注型装置内で５０×５０×１０
（ｍｍ）のブロック形状に型取したシリコーンゴム成形
型に注入した。スラリー注入後、真空注型装置内を大気
圧に戻し、スラリーを型の細部までいきわたらせた。そ
の後、真空注型装置内温度を上げ、７０℃で４５分間加
熱処理してバインダー分を硬化させることにより、スラ
リー全体を硬化させた。スラリー硬化後、シリコーンゴ
ム成形型から成形体を離型して取り出した。得られた成
形体は、収縮率０．０４％であった。この成形体を１６
５０℃で２時間焼結し、相対密度９１％のＡｌ2 Ｏ3 焼
結体が得られた。EXAMPLES The present invention will be described in more detail based on the following examples. However, the present invention is not limited to the following examples. Example 1 Al 2 O having an average particle size of 1 μm as a ceramic raw material powder
3 200 g, 87 g of a main component of a two-liquid type urethane resin as a binder and 113 g of a curing agent were weighed, and Al 2 O 3 was added to the curing agent and mixed by stirring. Then, the curing agent in which the main component and Al 2 O 3 were dispersed was allowed to stand still in a vacuum casting apparatus whose pressure was reduced to about 1 to 2 torr to perform preliminary defoaming. Then, the main agent and the curing agent having Al 2 O 3 dispersed therein were similarly stirred and mixed in a vacuum casting device to obtain a defoamed ceramic raw material powder slurry. The obtained slurry is 50 × 50 × 10 in a vacuum casting device of 1 to 2 torr.
It was poured into a silicone rubber molding die which was molded into a block shape of (mm). After injecting the slurry, the inside of the vacuum casting apparatus was returned to the atmospheric pressure, and the slurry was spread to the details of the mold. Then, the temperature inside the vacuum casting apparatus was raised and the binder was cured by heating at 70 ° C. for 45 minutes to cure the entire slurry. After the slurry was hardened, the molded product was released from the silicone rubber mold and taken out. The obtained molded product had a shrinkage rate of 0.04%. This molded body 16
After sintering at 50 ° C. for 2 hours, an Al 2 O 3 sintered body having a relative density of 91% was obtained.
【００１２】実施例２ セラミックス原料粉末として平均粒径１μｍのα−Ｓｉ
Ｃ９８．５ｇ、焼結助剤としてＢ4 Ｃ１．５ｇ、バイン
ダー分として２液混合タイプのウレタン樹脂の主剤４
３．５ｇ、硬化剤５６．５ｇをそれぞれ秤量した以外
は、実施例１と同様の操作により５０×５０×１０（ｍ
ｍ）のブロック状のＢ4 Ｃ助剤系−ＳｉＣの成形体を得
た。得られた成形体は、収縮率０．０４％であった。こ
の成形体をＡr 雰囲気下２１３０℃で３時間焼結して相
対密度９０％のＳｉＣ焼結体を得た。Example 2 α-Si having an average particle size of 1 μm as a ceramic raw material powder
C 98.5 g, B 4 C 1.5 g as a sintering aid, and a two component mixture type urethane resin base 4 as a binder component.
By the same operation as in Example 1 except that 3.5 g and 56.5 g of a curing agent were weighed, 50 × 50 × 10 (m
to obtain a block-shaped B 4 C aids based -SiC molded article of the m). The obtained molded product had a shrinkage rate of 0.04%. This compact was sintered in an Ar atmosphere at 2130 ° C. for 3 hours to obtain a SiC sintered body having a relative density of 90%.
【００１３】実施例３ セラミックス原料粉として平均粒径１μｍのα−ＳｉＣ
４０ｇ、平均粒径１．５μｍのＴi Ｂ2 ６０ｇ、平均粒
径２０μｍのＡｌ2 Ｏ3 １ｇをそれぞれ秤量した以外は
実施例２と同様にしてＳi Ｃ質導電性セラミックスの成
形体を得た。この成形体を実施例２と同様にして焼結し
て相対密度８９％のＳｉＣ質導電性セラミックス焼結体
を得た。Example 3 As a ceramic raw material powder, α-SiC having an average particle size of 1 μm
A shaped body of SiC type conductive ceramics was obtained in the same manner as in Example 2 except that 40 g, 60 g of Ti B2 having an average particle size of 1.5 μm and 1 g of Al 2 O 3 having an average particle size of 20 μm were weighed. This compact was sintered in the same manner as in Example 2 to obtain a SiC-based conductive ceramics sintered compact having a relative density of 89%.
【００１４】[0014]
【発明の効果】本発明のセラミックスの成形法は、乾燥
工程を必要とせず複雑形状のセラミックス成形体を短時
間に簡便に得ることができる。更に、欠陥等が生じるこ
となく成形歩留りも高い。例えば、シリコーンゴム型の
製作に約半日、バインダー分である硬化性樹脂とセラミ
ックス原料粉末の秤量及び撹拌混合、脱泡等の注型用減
圧脱泡セラミックス原料粉末スラリーを得るために約４
０分、鋳込み注型、硬化等処理に約１〜２時間と短時間
の操作で高率よく、欠陥の少ない複雑形状のセラミック
ス成形体が得られる。According to the method for forming ceramics of the present invention, it is possible to easily obtain a ceramics compact having a complicated shape in a short time without requiring a drying step. Furthermore, the molding yield is high without causing defects. For example, it takes about half a day to manufacture a silicone rubber mold, and about 4 times to obtain a slurry for casting vacuum degassing ceramic raw material powder for casting, such as weighing, stirring and mixing a curable resin that is a binder component and ceramic raw material powder, and defoaming.
A ceramic molded body having a complicated shape with high efficiency and few defects can be obtained by a short time operation such as 0 minute, casting casting, curing and the like for about 1 to 2 hours.
Claims (3)
型を設置し、該成形型にセラミックス原料粉末と硬化性
樹脂とを脱泡攪拌混合して得た脱泡混合粉末スラリーを
真空鋳込成形した後、常圧下で硬化させてセラミック成
形体を得ることを特徴とするセラミックスの成形法。1. A defoaming mixed powder slurry obtained by placing a silicone rubber molding die in a vacuum casting device, degassing and stirring ceramic raw material powder and a curable resin, and vacuum casting the mixture. A method for molding ceramics, which comprises molding and then curing under normal pressure to obtain a ceramic molded body.
であり、加熱硬化してセラミック成形体を得る請求項１
記載のセラミックスの成形法。2. A ceramic molded body is obtained by curing the curable resin with a two-liquid type curable resin by heating and curing the curable resin.
A method for forming the described ceramics.
々にそれぞれ予備脱泡した２液混合タイプ硬化樹脂主剤
と、セラミックス原料粉末を２液混合タイプ硬化樹脂硬
化剤に予め分散混合した分散混合物とを攪拌混合して得
る請求項２記載のセラミックスの成形法。3. The defoaming mixed powder is preliminarily separately defoamed separately in a vacuum casting device, and a two-component mixed type curing resin main agent and ceramic raw material powder are dispersed and mixed in advance in a two-component mixing type curing resin curing agent. The ceramic molding method according to claim 2, which is obtained by stirring and mixing the dispersion mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5347789A JPH07186116A (en) | 1993-12-24 | 1993-12-24 | Molding of ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5347789A JPH07186116A (en) | 1993-12-24 | 1993-12-24 | Molding of ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07186116A true JPH07186116A (en) | 1995-07-25 |
Family
ID=18392589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5347789A Pending JPH07186116A (en) | 1993-12-24 | 1993-12-24 | Molding of ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07186116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238821A (en) * | 2007-03-27 | 2008-10-09 | Xerox Corp | Forming of solid ink stick using flexible molding tool |
| WO2012114865A1 (en) * | 2011-02-21 | 2012-08-30 | 日本碍子株式会社 | Method for manufacturing powder compact, and powder compact |
-
1993
- 1993-12-24 JP JP5347789A patent/JPH07186116A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008238821A (en) * | 2007-03-27 | 2008-10-09 | Xerox Corp | Forming of solid ink stick using flexible molding tool |
| WO2012114865A1 (en) * | 2011-02-21 | 2012-08-30 | 日本碍子株式会社 | Method for manufacturing powder compact, and powder compact |
| US9051220B2 (en) | 2011-02-21 | 2015-06-09 | Ngk Insulators, Ltd. | Method for producing powder molded product and powder molded product |
| JP5907943B2 (en) * | 2011-02-21 | 2016-04-26 | 日本碍子株式会社 | Method for producing powder compact |
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