JPS5849659A - Preparation of ceramic material dough for compaction fluid formation - Google Patents

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、窯業材料の圧密流動成形用素地に関するもの
である。圧密流動成形法は、窯業材料の適当な粒度配合
物に、適当量の同質材料微粉を配合し、これに所要数の
潤滑剤、粘結剤を添加し、ニーダ−等によって混練して
得た素地を型に入れ圧力を加えて、圧密流動成形する方
法である。圧密流動成形法は、Ｍ式法の鋳込み性と乾式
法の成形物の保形性を兼ね具えた、いわば半乾式法とも
言うべきものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a matrix for consolidation flow molding of ceramic materials. In the consolidation flow molding method, an appropriate amount of homogeneous material fine powder is blended with a suitable particle size mixture of ceramic materials, the required number of lubricants and binders are added to this, and the mixture is kneaded using a kneader, etc. In this method, the material is placed in a mold and pressure is applied to form the material through consolidation flow. The consolidation flow molding method can be called a semi-dry method, which combines the casting properties of the M method and the shape retention of molded products of the dry method.

この圧密流動成形法においては、素地が充分かつ完全に
混練され、混練された素地が適当な鋳込み性を持つため
に良好な圧密流動性を有し、また成形された生型が適切
な硬さの保形性を持つことが必要である。充分かつ完全
に混練がなされるために、潤滑剤、粘結剤は予め水溶液
として配合し分散性を保留せしめることが行なわれてい
る。溶液として水溶液を選べば、混合した際の粘性増加
から、濃度を一定濃度以丁とする制約があるのを免かれ
ず、圧密流動性を上昇せしめるためには、過剰の該水溶
液を投入する必要があり、このため混練素地は水分過剰
となり、混練素地が適当な可塑性を保つためには、前記
微粉の配装置を増加しなければならず、この事は焼成後
の該窯業品の耐スポーリング性を阻害する結果となる。In this consolidation flow molding method, the base material is sufficiently and completely kneaded, the kneaded base material has appropriate castability, has good consolidation fluidity, and the molded green mold has appropriate hardness. It is necessary to have shape retention properties. In order to ensure sufficient and complete kneading, lubricants and binders are mixed in advance as an aqueous solution to maintain dispersibility. If an aqueous solution is selected as the solution, there is a restriction that the concentration must be kept at a certain level due to the increase in viscosity when mixed, and in order to increase the consolidation fluidity, it is necessary to add an excess amount of the aqueous solution. As a result, the kneaded material becomes over-hydrated, and in order to maintain appropriate plasticity of the kneaded material, the amount of fine powder distributing equipment must be increased, which reduces the spalling resistance of the ceramic product after firing. This results in inhibiting sexuality.

これを避けるために、水溶液とする代りに有機溶媒を使
用して濃厚な潤ｒ骨剤、粘結剤の溶液を作成使用するこ
とが行なわれるが、濃度との制約から充分な添加ができ
ず、また作業中の溶媒の揮発による品質のバラツキ等種
々の欠点を有し、不満足なものである。In order to avoid this, it is common practice to create and use a concentrated lubricating agent and binder solution using an organic solvent instead of an aqueous solution, but due to concentration constraints, it is not possible to add enough. Moreover, it is unsatisfactory as it has various drawbacks such as variations in quality due to the volatilization of the solvent during operation.

本発明方法は、潤滑剤、粘結剤の水溶液を用いかつ良好
な圧密流動性と、成形性を具え、焼成品の胴スポーリン
グ性の優れた圧密流動成形用素地を提供するものである
。The method of the present invention uses an aqueous solution of a lubricant and a binder, has good consolidation fluidity and moldability, and provides a base for consolidation fluid molding that has excellent shell spalling properties of fired products.

本発明の要旨は、窯業材料の圧密流動成形に際し、適宜
粒度の原料と該原料と同−質微粉からなる配合物に、添
加すべき潤滑剤、粘結剤の一部を水浴液として、残余を
粉末状態で添加し混練する構成に在る。The gist of the present invention is that during consolidation flow molding of ceramic materials, a part of the lubricant and binder to be added to a mixture consisting of raw materials of appropriate particle size and fine powder of the same quality as the raw materials is added as a water bath liquid, and the remaining The composition is such that it is added in powder form and kneaded.

即ち、適宜粒度の原料と該原料、と同質の微粉および所
要潤滑剤、粘結剤悉加量のうち適当潰を粉体で０口え、
これに見合う残余の量を水溶液としてニーダ−等に同時
に投入し、混練するか、あるいは、適宜粒度の原料およ
び同質の微粉および一部の粉体の潤滑剤、粘結剤を混合
機で充分に混合しく　３） この混合物に残余の潤滑剤、粘結剤の水溶液を添加して
混練する。または、原料と微粉に潤〆骨剤、粘結剤の水
溶液を加えて混練し、この混合物に残余の潤滑剤、粘結
剤を粉体状態で添加し、混練するものであり、添加順序
は上記何れの順序でも良い。That is, the raw material of an appropriate particle size, the fine powder of the same quality as the raw material, and the required amount of lubricant and binder are crushed into powder,
The remaining amount corresponding to this amount can be simultaneously put into a kneader etc. as an aqueous solution and kneaded, or the raw material with the appropriate particle size, homogeneous fine powder, and some powder lubricants and binders can be sufficiently mixed in a mixer. 3) Add the remaining lubricant and binder aqueous solution to this mixture and knead. Alternatively, an aqueous solution of a lubricant and a binder is added to the raw material and fine powder and kneaded, and the remaining lubricant and binder are added in powder form to this mixture and kneaded. Any of the above orders may be used.

使用する潤滑剤、粘結剤としては、例えば粉体ではＣＭ
Ｃ，ＰＶＡ、デキストリン、アルギン酸ソーダ等があり
、これらの一種または二種以上が用いられ、液状物では
ゴムラテックスがある。The lubricant and binder to be used include, for example, CM in powder form.
C, PVA, dextrin, sodium alginate, etc., and one or more of these are used, and rubber latex is a liquid material.

また粉体の状態で添加すべき潤滑剤、粘結剤の量は適宜
粒度の原料および同−質微粉の合引社１００重阻部に対
しα０５〜１重漱部の範囲が好適で、０．０５重量部以
下では、成形性は改善されず１重置部以上では混練月料
の粘性が強すぎて成形に不適当となるからである。The amount of lubricant and binder to be added in powder form is preferably in the range of α05 to 1 part by weight per 100 parts by weight of raw material and homogeneous fine powder of appropriate particle size. If the amount is less than .05 parts by weight, the moldability will not be improved, and if the amount is more than 1 part by weight, the viscosity of the kneaded material will be too strong and it will be unsuitable for molding.

本発明方法によれば、圧密流動成形用素地の調製に際し
、添加すべき水分計を極少にして混練し従来到達不可能
とされた良好な圧密流動性を保有した混練物を得ること
ができる。従って混練素地（４） の可塑性調節のため原料、微粉をさらに添加する必要が
なく、微粉含装置を最少限に止めることができるので、
焼成品の耐スポーリング性を乾式法規成品同様に保持す
ることができ、圧密流動成形法の適用範囲が拡張される
。以Ｆ１本発明方法を実施例、比較例により、さらに具
体的に説明する。According to the method of the present invention, when preparing a base for consolidation fluid molding, it is possible to knead with a minimum amount of moisture content to be added, thereby obtaining a kneaded product having good consolidation fluidity that was previously considered unattainable. Therefore, there is no need to further add raw materials or fine powder to adjust the plasticity of the kneaded base (4), and the need for fine powder-containing equipment can be kept to a minimum.
The spalling resistance of the fired product can be maintained similar to that of dry process products, and the scope of application of the consolidation flow forming method is expanded. Hereinafter, the F1 method of the present invention will be explained in more detail with reference to Examples and Comparative Examples.

比較例 適当なジルコニア粒度配合物を調製し、これにジルコニ
アフラワーと称する微粉を１７〜３４％配合し、この配
合物１０ｋｇに対し、ｌｌ＆ｌ滑剤、粘結剤としてＰＶ
Ａ、ＣＭＯ，デキストリン、アルギン酸ソーダ、ゴムラ
テックスから一種または二種以上を選び、この２％水溶
ｉ１Ｙ７００ｇを添加してニーダ−で混練した。潤滑、
粘結剤の２％水溶液は非常に粘性が強く、５００ｇ程度
の添加では混練が困難で、７００ｇの添加により、良好
な圧密流動性を得ることができた。Comparative Example A suitable zirconia particle size compound was prepared, and 17 to 34% of a fine powder called zirconia flour was blended therein.
One or more of A, CMO, dextrin, sodium alginate, and rubber latex were selected, and 700 g of this 2% water-soluble i1Y was added and kneaded in a kneader. Lubrication,
A 2% aqueous solution of the binder has a very strong viscosity, and it is difficult to knead it when adding about 500 g, but good compaction fluidity can be obtained by adding 700 g.

圧密流動性の尺度として、発明者は第１図に示すような
構造の流ｍ引を作成した。内径４０ｍｍ。As a measure of consolidation fluidity, the inventor created a fluid having a structure as shown in FIG. Inner diameter 40mm.

外径８Ｑ　ｍｍ、　’ｊ高さ１５０　ｍｍの鋼製の円筒
形の外筒１を作り、この外筒１に緩く嵌合する長さ２０
０ｍｍの銅製の度付中空内筒２を作り、底の中央に５〜
８ｍｍ径の通過孔３を設けた。なお外筒１の内面、内筒
２の外面には、それぞれ硬質クロムめっきが施されてい
る。試験方法は次の通りである。A cylindrical steel outer cylinder 1 with an outer diameter of 8Q mm and a height of 150 mm is made, and a length of 20 mm is made so that it fits loosely into the outer cylinder 1.
Make a hollow inner cylinder 2 made of copper with a diameter of 0 mm, and place a 5~
A passage hole 3 with a diameter of 8 mm was provided. Note that the inner surface of the outer cylinder 1 and the outer surface of the inner cylinder 2 are each plated with hard chrome. The test method is as follows.

サンプルの混線材料４を３００ｇ外筒１内に入れ内筒２
を嵌込み内筒２を上部から１００　ｍｍ／　１０　ｓｅ
ｃ。Put 300g of the sample crosstalk material 4 into the outer cylinder 1 and insert it into the inner cylinder 2.
Insert the inner cylinder 2 by 100 mm/10 se from the top.
c.

の速度＋　　５０　ｋｇ　／　ｃｍ　”の圧力で押圧し
た。内筒２の押圧により混線材料４は通過孔３を通って
上部に流動逸出する。成る匿が逸出したのち、流動は完
了し外筒１内に、逸出しなかった材料が残留する。この
残留量をもって圧密流動性の尺度とする。−例を挙げれ
ば次の通り。The crosstalk material 4 flows upward through the passage hole 3 due to the pressure of the inner cylinder 2 and escapes to the upper part. The material that did not escape remains in the cylinder 1. This residual amount is used as a measure of the consolidation fluidity. Examples are as follows.

残留量　　０〜１００ｇ　　　流動性良好１００〜２０
０　ｇ　　　流動性適度 ２００〜３００ｇ　　　流動性不足 前述の材料’１０　ｋｇに対し潤ン骨剤、粘結剤２％水
溶液７００ｇを添加混練したものを各３００ｇ採取しこ
の流動計で測定したところ残個量は３０ｇ以下となり、
何れの場合も流動性は良好となったが、混線材料は素地
の硬度が不足し、シルコニするつぼの成形は不可能であ
った。Residual amount 0~100g Good fluidity 100~20
0 g Adequate fluidity 200-300 g Insufficient fluidity When 10 kg of the above-mentioned material was added and kneaded with 700 g of a 2% aqueous solution of a moist aggregate and a binder, 300 g of each was collected and measured with this rheometer. The amount is less than 30g,
Although the fluidity was good in all cases, the hardness of the base of the mixed wire material was insufficient, and it was impossible to form a silicone pot.

実施例１ 比較例１と同一のジルコニアフラワー配合物に潤滑剤、
粘結剤の２％水浴液７００ｇと水溶液と同一の潤滑、粘
結付与剤を粉末で１０〜５０　ｇの範囲で種々混練した
。混練物を流動側で試験したところ、残留量は、それぞ
れ１０〜１００ｇの範囲にあり、しかも成形性も良好で
あった。水分、フラワー量の割合の多い場合にも成形性
の良い混線材料を得ることができた。Example 1 The same zirconia flower formulation as in Comparative Example 1 was added with a lubricant,
700 g of a 2% water bath solution of the binder and the same lubricating and caking agent as the aqueous solution were kneaded in various powders in the range of 10 to 50 g. When the kneaded products were tested on the flow side, the residual amount was in the range of 10 to 100 g, and the moldability was also good. It was possible to obtain a cross-wire material with good moldability even when the proportions of water and flour were high.

実施例２ シルコニするつは生型成形に際し、適当なジルコニア粒
度の配合物を作成し、これにジルコニアフラワー８〜１
２％を配合し、その１０　ｋｇに対し比較例で用いた潤
滑剤、粘結剤２％水溶液５００ｇを添加ニーダ−で４５
分間混練した。混線材料を前記流動計で試験したところ
、３００ｇに対する残留量は２５０〜３００ｇで、はと
んど流動しないと判定された。Example 2 During green molding, a mixture of zirconia particles with an appropriate particle size was prepared, and zirconia flour 8 to 1 was added to it.
2%, and 500g of the 2% aqueous lubricant and binder solution used in the comparative example was added to 10kg of the lubricant and binder using a kneader.
Kneaded for a minute. When the mixed wire material was tested using the rheometer, the residual amount was 250 to 300 g compared to 300 g, and it was determined that it hardly flowed.

（７） これに前記潤滑剤、粘結剤を１０〜５０　ｇを添加し、
混練を３０分行なったト、流動用にかけたところ、残詔
眼は１０　ｇ以下となり、しかも成形性も甚だ良好であ
った。(7) Add 10 to 50 g of the lubricant and binder to this,
After kneading for 30 minutes, the mixture was subjected to fluidization, and the amount of residual particles was less than 10 g, and the moldability was also very good.

この例に示すように、適当な粒度配合の累月に対し、フ
ラワー配合機を１０％程度以下に減瓢し、しかも添加水
分を極少にし、かつ充分な圧密流動性と成形性を保育す
る混線材料を得ることができた。As shown in this example, it is possible to reduce the amount of flour compounding machine to about 10% or less for the appropriate particle size blending, minimize the added moisture, and maintain sufficient compaction fluidity and moldability. I was able to obtain the materials.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、圧密流動計の概略構造を示す縦断面図で、図
中１は外筒、２は内筒、３は通過孔、４は混線材料を示
す。 特許出願人　　松尾化成株式会社 代理人　　　弁理士　松永圭司 （８） 第　　　１　　　図 ３３１FIG. 1 is a longitudinal sectional view showing the schematic structure of a consolidation rheometer, in which 1 is an outer cylinder, 2 is an inner cylinder, 3 is a passage hole, and 4 is a crosstalk material. Patent applicant Matsuo Kasei Co., Ltd. Agent Patent attorney Keiji Matsunaga (8) 1st Figure 331

Claims (1)

【特許請求の範囲】 １、　窯業材料の圧密流動成形に際し、適宜粒度の原料
と該原料と同−質微粉からなる配合物に、添加すべき潤
滑剤、粘結剤の一部を水溶液として、残余を粉末状態で
添加し混練することを特徴とする窯業材料の圧密流動成
形用素地の調製法。 ２、　粉末状態で添加する潤滑剤、粘結剤の添加量が配
合物１００重量部に対し０．０５〜１重量部である特許
請求の範囲第１項記載の窯業材料の圧密流動成形用素地
の調製法。[Scope of Claims] 1. When performing consolidation flow molding of ceramic materials, a part of the lubricant and binder to be added to a mixture consisting of raw materials of appropriate particle size and fine powder of the same quality as the raw materials is added as an aqueous solution, A method for preparing a base for compaction fluid molding of a ceramic material, characterized by adding the residue in powder form and kneading. 2. A base for consolidation fluid molding of a ceramic material according to claim 1, wherein the amount of the lubricant and binder added in powder form is 0.05 to 1 part by weight per 100 parts by weight of the blend. Preparation method.