JPH02167832A - Mold-releasing material for glass powder forming mold - Google Patents
Mold-releasing material for glass powder forming moldInfo
- Publication number
- JPH02167832A JPH02167832A JP32446588A JP32446588A JPH02167832A JP H02167832 A JPH02167832 A JP H02167832A JP 32446588 A JP32446588 A JP 32446588A JP 32446588 A JP32446588 A JP 32446588A JP H02167832 A JPH02167832 A JP H02167832A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding
- glass powder
- powder
- releasing agent
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 65
- 239000000843 powder Substances 0.000 title claims abstract description 59
- 239000000463 material Substances 0.000 title claims description 33
- 238000000465 moulding Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 12
- 235000021317 phosphate Nutrition 0.000 claims description 12
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 10
- 239000003795 chemical substances by application Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 150000003016 phosphoric acids Chemical class 0.000 abstract 4
- 230000008018 melting Effects 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 238000000748 compression moulding Methods 0.000 abstract 1
- 230000004927 fusion Effects 0.000 abstract 1
- 238000000280 densification Methods 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000002425 crystallisation Methods 0.000 description 8
- 230000008025 crystallization Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 239000006082 mold release agent Substances 0.000 description 5
- 239000011812 mixed powder Substances 0.000 description 4
- 239000005361 soda-lime glass Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- -1 20a Chemical class 0.000 description 1
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000019700 dicalcium phosphate Nutrition 0.000 description 1
- 229940095079 dicalcium phosphate anhydrous Drugs 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- ZDJAFJYWBILBIP-UHFFFAOYSA-K trisodium methane phosphate Chemical compound P(=O)([O-])([O-])[O-].[Na+].C.[Na+].[Na+] ZDJAFJYWBILBIP-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B40/00—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it
- C03B40/02—Preventing adhesion between glass and glass or between glass and the means used to shape it, hold it or support it by lubrication; Use of materials as release or lubricating compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分１１Ｆ）
本発明は、ガラス粉末を高温で加圧成形する際に成形金
型に塗布される離型材に関する。加圧成形によって得ら
れたガラス粉末成形体は緻密化および結晶化熱処理が施
されて結晶化ガラス材とされる。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application 11F) The present invention relates to a mold release material applied to a molding die when glass powder is pressure molded at high temperature. The glass powder compact obtained by pressure molding is subjected to densification and crystallization heat treatment to obtain a crystallized glass material.
（従来の技術）
近年、天然石材やガラス材とは質感のやや異なる結晶化
ガラス材が内外装材として多方面で使用されつつある。(Prior Art) In recent years, crystallized glass materials, which have a slightly different texture from natural stone and glass materials, are being used in many fields as interior and exterior materials.
前記結晶化ガラス材の好適な製造方法として、特廓昭６
１−２９１２０３号において開示されているように、軟
化点の異なるガラス粉末からなる混合わ）未を成形金型
に入れて低軟化点ガラス粉末の軟化点以上でかつ高軟化
点ガラス粉末の軟化点以下の温度（緻密化温度）で緻密
化しつつ加圧成形（以下、高温加圧成形という、）シ、
得られたガラスｔ５】末成形体に緻密化熱処理および結
晶化熱処理を施す方法がある。この方法によれば、ガラ
ス粉末の緻密化の過程で粉末の間に存在した空気は未軟
化の高軟化ガラスむ】末の粒子表面に沿って外部へ排出
され、気泡や気孔の存在しない緻密な結晶化ガラス材が
得られるという利点がある。As a preferred method for producing the crystallized glass material,
As disclosed in No. 1-291203, a mixture of glass powders with different softening points is put into a mold and the softening point is higher than the softening point of the low softening point glass powder and the softening point of the high softening point glass powder. Pressure forming (hereinafter referred to as high temperature pressure forming) while densifying at the following temperature (densification temperature),
There is a method of subjecting the obtained glass (t5) final molded body to densification heat treatment and crystallization heat treatment. According to this method, the air that existed between the powders during the densification process of the glass powder is discharged to the outside along the particle surface of the unsoftened highly softened glass powder, resulting in a densified glass powder without air bubbles or pores. There is an advantage that a crystallized glass material can be obtained.
上記の方法を工業的に実施するには、まず、第１図に示
すように成形金型１の内周面および上型３の下面に離型
材を塗布する。離型材としては、タルクやＡｊ！ｇｏｓ
等の耐火材のわ）末を水中に分散させたものが使用され
ている０次に、前記成形金型１に、ガラスわ）末成形体
の原料である前記混合粉末２の所定狙を投入した後、加
圧用の上型３を嵌着する。そして、成形金型１ごと加熱
して緻密化温度（通常、６００〜Ｂ００″Ｃ）に均熱し
、強制的に加圧又は上型３の自重をかけつつ所定時間保
持するとガラス粉末同士が付着ないし部分的に融着した
緻密な成形体が得られる。成形後、ガラス粉末成形体は
成形金型１から取り出され、緻密化促氾および結晶化の
ための熱処理工程に移行される。To carry out the above method industrially, first, a mold release material is applied to the inner circumferential surface of the molding die 1 and the lower surface of the upper mold 3, as shown in FIG. As a mold release material, talc or Aj! gos
Next, a predetermined amount of the mixed powder 2, which is the raw material for the glass powder molded product, is poured into the molding mold 1. After that, the upper mold 3 for pressurization is fitted. Then, the entire mold 1 is heated to a densification temperature (usually 600 to B00''C) and held for a predetermined period of time while forcibly applying pressure or the weight of the upper mold 3 to prevent glass powder from adhering to each other. A dense, partially fused molded body is obtained. After molding, the glass powder molded body is taken out of the molding die 1 and transferred to a heat treatment step for densification promotion and crystallization.
一方、成形金型１および上型３は、再び離型材が塗布さ
れ、上述のガラス粉末成形工程で繰り返し使用される。On the other hand, the molding die 1 and the upper mold 3 are again coated with a mold release agent and used repeatedly in the above-mentioned glass powder molding process.
（発明が解決しようとする課題）
しかしながら、ガラスわ】末成形体を成形し、これを金
型から取り出した後、直ちに金型に離型材を塗布しよう
とすると、離型材を均一に塗布することができないとい
う問題がある。成形体を取り出した直後の金型は６００
℃程度の高温となっているため、これに塗布された離型
材中の水分は瞬時に沸騰し、逸散してしまうからである
。(Problem to be Solved by the Invention) However, when trying to apply a mold release agent to the mold immediately after molding a glass preform and taking it out of the mold, it is difficult to apply the mold release material uniformly. The problem is that it is not possible. The mold size immediately after taking out the molded product is 600.
This is because, since the temperature is as high as 0.degree. C., the moisture in the mold release material applied thereto instantly boils and evaporates.
このため、連続的にガラス＄５）末の成形を行うには、
成形金型を多数準備し、成形後の金型を冷却すると共に
、離型材の均一塗布が可能な温度（２５０℃程度以下〉
に既に冷却された金型を用いて離型材を塗布する必要が
ある。Therefore, in order to continuously form glass powder,
Prepare a large number of molding molds, cool the molds after molding, and maintain a temperature that allows uniform application of mold release material (approximately 250°C or less).
It is necessary to apply a mold release agent using a mold that has already been cooled.
しかし、このような方法では、成形金型を多数準備しな
ければならないという問題のほか、−旦冷却した金型を
使用するため、緻密化温度に再加熱するのに時間を要し
、生産性が著しく低下するという問題がある。However, with this method, in addition to the problem of having to prepare a large number of molding molds, - since the molds are used after they have been cooled, it takes time to reheat them to the densification temperature, which reduces productivity. There is a problem that there is a significant decrease in
尚、高温の成形金型に離型手段を施す方法として、マイ
カ板を成形面に装着することも試みたが、成形面が平坦
状のもの以外には適用することができず、またコストの
上昇を招来し、実用的でない。In addition, we tried attaching a mica plate to the molding surface as a method of providing a mold release means to the high-temperature molding die, but it could not be applied to molding surfaces other than those with flat surfaces, and it was not possible to apply it to molding surfaces other than flat ones, and the cost was too high. This would lead to an increase in the price and is not practical.
本発明はかかる問題点に鑑みなされたもので、ガラス粉
末の高温加圧成形法の実施に際し、成形後の高温の成形
金型に均一に塗布することができる離型材を提供するこ
とを０的とする。The present invention was made in view of the above problems, and has a zero objective of providing a mold release material that can be uniformly applied to a high-temperature mold after molding when performing a high-temperature pressure molding method for glass powder. shall be.
（課題を解決するための手段）
上記目的を達成するためになされた本発明のガラス粉末
成形金型用離型材は、黒鉛粉末からなる骨材と、成形後
の金型の保有熱により溶融するリン酸塩類と、水とを含
有することを発明の構成とするものである。(Means for Solving the Problems) The mold release material for glass powder molding molds of the present invention, which has been made to achieve the above object, has an aggregate made of graphite powder and is melted by the heat retained in the mold after molding. The composition of the invention is that it contains phosphates and water.
（作 用）
本発明の離型材を成形後の高温の成形金型に塗布すると
、金型の保有熱により離を材中の水分が沸騰するが、同
時にリン酸塩類が溶融して骨材同士をつなぎ止めると共
に金型表面に付着し、均一厚さの離型層が形成される。(Function) When the mold release material of the present invention is applied to a high-temperature mold after molding, the water in the mold release material boils due to the heat held by the mold, but at the same time, the phosphates melt and the aggregates bond together. At the same time, it adheres to the mold surface, forming a release layer with a uniform thickness.
溶融したリン酸塩類の接着力は軽微であるので、ガラス
粉末の成形後、ガラス粉末成形体を金型から取り出す際
、離型層はその中間部で容易に分断され、成形体が金型
表面に付着することなく、容易に金型外部に取り出され
る。The adhesive strength of molten phosphates is weak, so when the glass powder compact is taken out of the mold after molding, the mold release layer is easily separated in the middle, and the compact sticks to the mold surface. It can be easily taken out of the mold without sticking to the mold.
本発明の離型材の骨材として使用する黒鉛粉末は、６５
０℃程度までは酸化せず、ガラス粉末とも反応せず安定
である。このため、加圧成形温度は６５０ ’Ｃ程度ま
でにする必要がある。一方、それ以上の温度では酸化に
よりガスとなって消失するので、成形体に付着した離型
層の残留物を付着したまま以後の熱処理に供しても、前
記残留物は酸化消、失し、結晶化に伴う成形体の収縮を
妨げることはない。The graphite powder used as the aggregate of the mold release material of the present invention is 65%
It does not oxidize or react with glass powder and is stable up to about 0°C. For this reason, it is necessary to set the pressure molding temperature to about 650'C. On the other hand, at temperatures higher than that, it becomes gas due to oxidation and disappears, so even if the mold release layer remains attached to the molded body and is subjected to subsequent heat treatment, the residue will oxidize and disappear. It does not prevent shrinkage of the molded product due to crystallization.
（実施例）
本発明の離型材の骨材としては、既述の通り、黒鉛粉末
を使用する。加圧成形温度（緻密化温度）は６５０℃程
度以下と制限されるものの、成形後、ガラスわ）未成形
体に付着した離型層の残留物を除去することなく、その
まま以後の熱処理に供することができるからである。な
お、骨材として、タルク、 八ｚ、ｏ、 、 ＩＩＮ
、 マイカ等の８００℃以上の温度でも安定な耐火材
の粉末を使用した場合は、成形後、ガラス粉末成形体に
付着した離型層の残留物を除去しておかないと、収縮率
の相違から結晶化の過程で結晶化ガラス材に反りが生じ
たり、著しい場合はクラックが入るおそれがある。(Example) As the aggregate of the mold release material of the present invention, graphite powder is used as described above. Although the pressure molding temperature (densification temperature) is limited to about 650°C or less, after molding, the unformed glass body can be subjected to subsequent heat treatment without removing the residue of the mold release layer attached to the unformed body. This is because it can be done. In addition, as aggregates, talc, 8z, o, , IIN
, When using refractory material powder such as mica that is stable even at temperatures of 800℃ or higher, the shrinkage rate may differ unless the residue of the mold release layer attached to the glass powder molded body is removed after molding. During the crystallization process, the crystallized glass material may warp or, in severe cases, cracks may appear.
黒鉛粉末の粒度は、平均粒怪が０．５〜５０μ■程度の
ものがよい９分散媒である水に対して分１１に性が良好
だからである。骨材の添加量としては、離型材重量に対
して０．１＝１５％梓度でよい。０．１％未満では離型
材として機能しデにく、一方１５％を越えると前記平均
粒径の粉末を使用しても均一に分散し難くなるからであ
る。尚、骨材の分散性を向上させるためには、界面活１
生剤等の分散剤を添加するとよい。The particle size of the graphite powder is preferably about 0.5 to 50 .mu.m on average because it has good resistance to water, which is a dispersion medium. The amount of aggregate added may be 0.1=15% based on the weight of the mold release material. If it is less than 0.1%, it will not function well as a mold release agent, whereas if it exceeds 15%, it will be difficult to disperse it uniformly even if powder having the above-mentioned average particle size is used. In addition, in order to improve the dispersibility of aggregate, it is necessary to
It is recommended to add a dispersant such as a crude agent.
ＮＥ型材に含有されるバインダーとして使用可能なリン
酸塩類としては、例えば溶融温度が約２００°Ｃの第１
リン酸すトリウム、約３００’Ｃの第１リン酸カルシウ
ム、約６００°Ｃのメタンリン酸ナトリウム等を使用す
ることができるが、成形後の金型の保有熱により溶融す
るものならいずれのリン酸塩でも（土用可能である。リ
ン酸塩類の添加量は、０．１〜５重量％程度でよい、０
．１％未満では付着や接着作用が不十分で刀１型層の均
一な形成が困難となる。一方、５％を越えると接着作用
の増大により離型層の中間域で分断し難くなる。リン酸
塩のうち水に不溶性、？Ｉｌ溶性のものについては骨材
と同程度以下の粒径のものを使用するのがよい。Examples of phosphates that can be used as binders in NE-shaped materials include
Storium phosphate, dibasic calcium phosphate at about 300'C, sodium methane phosphate at about 600'C, etc. can be used, but any phosphate can be used as long as it melts due to the heat retained in the mold after molding. (Possible for soil use. The amount of phosphates added may be about 0.1 to 5% by weight.
．． If it is less than 1%, adhesion and adhesion will be insufficient and it will be difficult to uniformly form the sword type 1 layer. On the other hand, if it exceeds 5%, the adhesive effect increases, making it difficult to separate the release layer in the middle region. Which of the phosphates is insoluble in water? As for Il-soluble particles, it is preferable to use particles with a particle size comparable to or smaller than that of the aggregate.
前記骨材やリン酸塩類および分散剤等が分散媒である水
に添加混合されて離型材が形成される。A mold release material is formed by adding and mixing the aggregate, phosphates, dispersant, etc. to water, which is a dispersion medium.
核部型材はスプレーガン等で成形金型のガラス粉末成形
面に塗布される。塗布によって形成する離型層の；Ｉさ
は１０〜５００μｍ程度でよい、離型層は薄くても離型
性は損われないが、塗布に熟練を要する。尚、骨材の粒
径は離型性を１□好にするため、Ｍ型層の１／３程度以
下のものを使用するのがよい。The core material is applied to the glass powder molding surface of the molding die using a spray gun or the like. The thickness of the mold release layer formed by coating may be about 10 to 500 μm. Even if the mold release layer is thin, the mold releasability is not impaired, but the coating requires skill. In order to improve mold releasability by 1□, it is preferable to use aggregate particle size that is about 1/3 or less of that of the M-type layer.
離型層が形成された成形金型によって高温加圧成形され
たガラス粉末成形体は、離型層がその中間部で容易に分
断されるため、金型から容易に取り出すことができる。A glass powder compact formed by high-temperature pressure molding using a molding die in which a mold release layer is formed can be easily taken out from the mold because the mold release layer is easily separated in the middle.
取り出したガラスわ）末成形体の成形面には、分断した
離型層の残留物が付着しているが、本発明の離型材を使
用した場合、既述の通り、特に残留物を除去することな
く以後の緻密化および結晶化熱処理を施すことができる
。The molding surface of the removed glass molded product has residues from the separated mold release layer attached to it, but when the mold release material of the present invention is used, as mentioned above, the residue must be removed in particular. The subsequent heat treatment for densification and crystallization can be performed without this.
ところで、高温加圧成形の対象となる低軟化点および高
軟化点ガラス粉末について言及しておく。By the way, let us mention the low softening point and high softening point glass powders that can be subjected to high temperature pressure molding.
低軟化点ガラス粉末としては、通常、入手容易なソーダ
石灰ガラスわ）末が使用される。ソーダ石灰ガラスは軟
化点が６００〜７５０°Ｃで結晶化開始温度が８００°
Ｃ程度以下である。高軟化点ガラスわ）末は前記ソーダ
石灰ガラス粉末を使用した場合、緻密化の容易さから軟
化点が８００°Ｃ以上のものを使用するのがよい、この
ようなガラスわ）末の主成分の一例を下記に示す、尚、
下記の組成の高軟化点ガラス粉末としてパーライト （
真珠岩）を粉砕したものを利用することができる。As the low softening point glass powder, soda lime glass powder, which is easily available, is usually used. Soda lime glass has a softening point of 600-750°C and a crystallization start temperature of 800°C.
It is below grade C. When using the above-mentioned soda-lime glass powder as high softening point glass powder, it is preferable to use one with a softening point of 800°C or higher for ease of densification.The main component of such glass powder is An example is shown below.
Pearlite (
You can use crushed pearlite.
Ａ、低１次化点ガラス組成（ｗｔ％）
Ｓｉ［）□：６５〜８０％、 ＣａＯ：５〜１０％１
１ａｚｏ＋Ｋｚｏ ： １０〜２０％、 ＭｇＯ：
２〜８％Ｂ、高軟化点ガラス組成（ｗＬ％〉
５ｉｎｔ： ６５〜８０％、へｇｔＯＪ：２５％以下Ｎ
ａＪ十ＫｚＯ： ５〜１５％
前記低軟化点ガラス粉末と高軟化点ガラスわ〕末との混
合粉末における両わ）末の配合割合は、前記低１次化点
ガラス１５）木が２０〜９０重遣％となるようにするこ
とが望ましい、２０％未満では高軟化点ガラスわ）未と
の１．１１着不足、ガラス粉末成形体の緻密化不足を招
来する。一方、９０％を越えると熱処理時のガラス粉末
成形体の形状保持が不十分となり、ま・た該成形体中の
気泡の排出作用が不足する。また、ガラスわ】末の粒度
は、２００メツシユ以下のｔ５）末を８０％以上（好ま
しくは９０％以上）占めるようにしておくことが望まし
い。A, low primary temperature glass composition (wt%) Si[)□: 65-80%, CaO: 5-10%1
1azo+Kzo: 10-20%, MgO:
2-8% B, high softening point glass composition (wL%) 5int: 65-80%, gtOJ: 25% or less N
aJ 10 KzO: 5 to 15% The blending ratio of both powders in the mixed powder of the low softening point glass powder and the high softening point glass powder is 20 to 90% of the low primary softening point glass powder. It is desirable to adjust the weight to 1.11%. If it is less than 20%, it will lead to a lack of high softening point glass (1.11%) and insufficient densification of the glass powder compact. On the other hand, if it exceeds 90%, the shape retention of the glass powder molded body during heat treatment will be insufficient, and the effect of discharging air bubbles in the molded body will be insufficient. Further, it is desirable that the particle size of the glass powder is such that the t5) powder of 200 mesh or less accounts for 80% or more (preferably 90% or more).
尚、結晶化ガラス材の強度を向上させるためには、高軟
化点ガラス粉末の一部に代えてＡ ｆ ２０３わ）末を
１〜８重景雪景有させるとよい、また、混合粉末にＦｅ
２０ａ 、 ＦｅＯ、Ｃｒｔ０５ 、 ＣｕＯ等の金属
酸化物の微粉末を添加することにより、着色結晶１ヒガ
ラス材や色模様付の結晶化ガラス材を製造することがで
きる。In order to improve the strength of the crystallized glass material, it is preferable to use A f 203 powder with 1 to 8 layers of powder instead of a part of the high softening point glass powder, and also add Fe to the mixed powder.
By adding fine powders of metal oxides such as 20a, FeO, Crt05, CuO, etc., it is possible to produce colored crystalline glass materials and crystallized glass materials with colored patterns.
次に具体的実施例について説明する。Next, specific examples will be described.
（１）第１表に示した組成、粒度の各種ガラス↑５】末
を調整した。(1) Various glass powders with the composition and particle size shown in Table 1 were prepared.
次 葉
第 １
表
第
表
第 ２ 表
（３）第１表のガラス粉末を用いて第３表の配合によっ
て混合粉末を！Ｊ１整し、これを成形金型（材′１１Ｓ
ｔｌＳ ）に投入し、同表の条件によって１０６０ｘ１
０６０ Ｘ厚さ３０ （ｍ）の板状ガラス粉末成形体を
製造した。Next Leaf Table 1 Table 2 Table 2 (3) Using the glass powder in Table 1, make a mixed powder according to the formulation in Table 3! J1 is adjusted, and this is molded into a mold (material '11S
tlS) and 1060x1 according to the conditions in the same table.
A plate-shaped glass powder molded body having a size of 0.060 m and a thickness of 30 m was manufactured.
（４） ｌｌｆ型材の塗布によりほぼ均一厚さの離型
層を形成することができた。また、成形後、ガラス粉末
成形体が金型に付着することもなく容易に取り出すこと
ができた。また、ガラス粉末成形体を３０１Ｃ／ｌｌｒ
で９００度に昇温し、４時間保持する緻密化および結晶
化熱処理に供したところ、反りや割を貝を生じることな
く緻密な結晶化ガラス板が得られた。(4) By applying the llf mold material, it was possible to form a release layer with a substantially uniform thickness. Further, after molding, the glass powder molded body could be easily taken out without adhering to the mold. In addition, the glass powder molded body is 301C/llr
When the temperature was raised to 900 degrees Celsius and subjected to densification and crystallization heat treatment for 4 hours, a dense crystallized glass plate was obtained without warping or cracking.
（発明の効果）
以上説明した通り、本発明のガラス粉末成形金型用離型
材は、バインダーとして成形後の金型の保有熱により溶
融するリン酸塩類を含有さセたものであるので、成形直
後の高温の金型に塗布しても、離型材中の骨材がリン酸
塩類を介して金型成形面に付着し、成形面が平坦面であ
ろうと凹凸面であろうと一定淳さの離型層が容易に形成
される。(Effects of the Invention) As explained above, the mold release material for glass powder molding molds of the present invention contains phosphates as a binder that melts due to the heat retained in the mold after molding. Even when applied to a hot mold immediately after application, the aggregate in the mold release agent adheres to the mold molding surface via phosphates, resulting in a constant thickness regardless of whether the molding surface is flat or uneven. A release layer is easily formed.
従って、成形金型を成形俊速やかに再使用することがで
き、成形金型は必要最少限単備すればよく、またエネル
ギーロスも可及的に少なくて済む、また、離型材の骨材
として黒鉛粉未使用しているため、成形後のガラスわ）
未成形体の表面に離型層の残留物が付着していても、そ
のまま以後の熱処理にイ」（することができ、結晶化ガ
ラス材の生産性向上に資することができる。Therefore, the molding mold can be quickly reused for molding, only the minimum number of molding molds required, energy loss can be minimized, and it can also be used as an aggregate for mold release material. (Because no graphite powder is used, the glass after molding)
Even if the residue of the mold release layer adheres to the surface of the unmolded body, it can be subjected to subsequent heat treatment as it is, and this can contribute to improving the productivity of the crystallized glass material.
第１図はガラス粉末成形体の成形要領を示す成形金型の
断面図である。
穿 ７ 廟FIG. 1 is a sectional view of a molding die showing the procedure for molding a glass powder compact. 7 temples
Claims (1)
する温度で加圧成形してガラス粉末成形体を得るに際し
、ガラス粉末成形体が付着するのを防止するために成形
型に塗布する離型材であって、 黒鉛粉末からなる骨材と、成形後の金型の保有熱により
溶融するリン酸塩類と、水とを含有することを特徴とす
るガラス粉末成形金型用離型材。(1) When glass powder is placed in a mold and pressure-molded at a temperature that softens and fuses the powder to obtain a glass powder molded body, the glass powder molded body is placed in the mold to prevent it from adhering to the glass powder molded body. A mold release material for a glass powder molding mold, which is applied and contains aggregate made of graphite powder, phosphates that melt due to the heat retained in the mold after molding, and water. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32446588A JPH02167832A (en) | 1988-12-21 | 1988-12-21 | Mold-releasing material for glass powder forming mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32446588A JPH02167832A (en) | 1988-12-21 | 1988-12-21 | Mold-releasing material for glass powder forming mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02167832A true JPH02167832A (en) | 1990-06-28 |
Family
ID=18166117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32446588A Pending JPH02167832A (en) | 1988-12-21 | 1988-12-21 | Mold-releasing material for glass powder forming mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02167832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105705466A (en) * | 2013-11-06 | 2016-06-22 | 东丽株式会社 | Method for manufacturing three-dimensional structure, method for manufacturing scintillator panel, three-dimensional structure, and scintillator panel |
-
1988
- 1988-12-21 JP JP32446588A patent/JPH02167832A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105705466A (en) * | 2013-11-06 | 2016-06-22 | 东丽株式会社 | Method for manufacturing three-dimensional structure, method for manufacturing scintillator panel, three-dimensional structure, and scintillator panel |
| EP3067332A4 (en) * | 2013-11-06 | 2017-05-31 | Toray Industries, Inc. | Method for manufacturing three-dimensional structure, method for manufacturing scintillator panel, three-dimensional structure, and scintillator panel |
| US10132937B2 (en) | 2013-11-06 | 2018-11-20 | Toray Industries, Inc. | Method for manufacturing three-dimensional structure, method for manufacturing scintillator panel, three-dimensional structure, and scintillator panel |
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