JPS5855367A - Die for glass manufacture - Google Patents

Die for glass manufacture

Info

Publication number
JPS5855367A
JPS5855367A JP56148717A JP14871781A JPS5855367A JP S5855367 A JPS5855367 A JP S5855367A JP 56148717 A JP56148717 A JP 56148717A JP 14871781 A JP14871781 A JP 14871781A JP S5855367 A JPS5855367 A JP S5855367A
Authority
JP
Japan
Prior art keywords
glass
mold
present
linear expansion
weight
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
Application number
JP56148717A
Other languages
Japanese (ja)
Inventor
長谷川 保和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Advance KK
Original Assignee
Advance KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Advance KK filed Critical Advance KK
Priority to JP56148717A priority Critical patent/JPS5855367A/en
Publication of JPS5855367A publication Critical patent/JPS5855367A/en
Pending legal-status Critical Current

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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】[Detailed description of the invention]

本発明はガラス塊、ガラス粒郷の原料ガラスを内部に収
容し、加熱成形処理してガラス製品をつくるガラス製造
用の!UK関する。 従来、耐熱石膏を用い′C型又はガラス供給室を有する
塁を所望形状に構成するのが一般的であった。通常の耐
熱石膏は、アルファー焼石膏(αCa50411TH■
0)やシリカ(Sins)などが含有され
The present invention is for glass manufacturing, in which glass lumps and raw glass from glass grains are housed inside and heat-formed to produce glass products. Related to UK. Conventionally, it has been common to use heat-resistant gypsum to construct a base having a C-shape or a glass supply chamber into a desired shape. Normal heat-resistant plaster is alpha calcined plaster (αCa50411TH■
0) and silica (Sins).

【いるもので
あって、水を含浸させたうえで所望形状の星に成形する
ことができるものである。そして、成形後、乾燥及び焼
成するが。 その焼成の際、耐熱石膏は、シリカを含有するためにα
トリジマイトからβトリデミイトに転移する現象、α石
英からβ石英に転移する現象、及びβ石英からβトリジ
マイ)K転移する現象が生じる。 焼成時に上記のような現象が生じ九従来の耐熱石膏の型
は、ガラスの伸びが転移点まで直線的な膨張特性である
のと異なって、直線的な膨張特性になることが望めない
ものであった。また、従来のように耐熱石膏を使用し九
場合、所望のガラスの膨張率に近似するガラス製造用の
型ヲつくることができなhe Lかも、よく知られてい
るように石膏自身は全く熱に耐えることができない。 このようなことから、従来の耐熱石膏からなるガラス製
造用の屋の場合においては、特に大皺の場合或は外型と
内型とを同時に設置する場合、IIIL料ガラメガラス
成形処理しているとき、亀裂が生じ易く、ガラスの膨張
率と型材の膨張率とが近似していない際には亀裂の発生
や変形が顕著となり、所望のガラス製品が得られない欠
点があった。 更にガラス製造用の型として満足すべき主要件を述べる
と次の通りとなる。 (1) 所望のN型にするために成形が容易であり、乾
燥の際にも亀裂が生じないこと、(匈 ガラスを加熱成
形処理する際に、亀裂及び変形が生じないこと。 (3)  ガラスの膨張率と型材の膨張率とが近似し、
しかも型材の伸び特性が直線的であること。 (4)離型の際、!材がガラスから容易に剥離すること
。 本発明は従来の耐熱石膏の型の欠点を排除すると共に、
上述したガラス製造用の型としての主要件を満足する型
を提供することKある。 即ち、本発明は原料ガラスの線膨張係数に応じて炭酸塩
、燐酸塩、塩化鉄の−又は二以上に対し、粘土類を40
重量−乃至5重量−の混合割合とした型材を用い、該型
材を成形後、焼成してなるガラス製造用の型を得ること
Kある。 粘土類の混合割合を限定した理由は次の通りである。 粘土類の混合割合が40重量%を越えてなるガラス製造
用の型の場合、W材が堅過ぎて離層が極めて困離となり
、また、5重量−に満たない混合割合でなるガラス製造
用の型の場合、成形、乾燥の際及びガラスを加熱成形処
理している際に、型に亀裂が生じ易くなる。 ところが本発明のように粘土類を最高で40重量−1最
低で5重量−の範囲の混合割合にしてなるガラス製造用
の濃は、製作の際、亀裂が生じる恐れかはとんどないの
でその製作作業を容易に行5仁とができ、しかもガラス
の膨張率に近似した膨張率を選択し得る特長を有する。 また 11作の際、亀裂発生の恐れがほとんどない仁と
から、複雑で大型のものを得るのに適しており、前述し
たガラス製造用のWIIICI!望される主要件を全て
満足し、従来の耐熱石膏からなる型の欠点を排除し得る
ものである。また、製作後の本発明のガラス膠造用の型
は、従来の耐熱石膏の型とは異なり、熱を加えたときに
直線的な伸び特性を有し、加熱後に冷却するときKも直
線的な縮み特性を有する点においても、極めて優れてい
る。 また、本発明の実施例では、炭酸塩としては炭酸マグネ
シウムを選んだが、炭酸カルシウムなどを用いることも
できる。また、燐酸塩としては、燐酸カルシウムを選ん
だが、他の燐酸塩でもさしつかえない。また粘土類とし
ては、蛙目粘土とセリサイトとを選んだが、木節粘土な
どを用いることもできる。 また、基剤として炭酸塩、燐酸、酸化鉄を選定した理由
は、これ等は原料ガラスの線膨張係数に近いそれを有し
ているからである。なお。 普通の透明ガラスにおけるam張係数α(10−’/l
は小さくて32程度、大きくて140〜150程度であ
り、一般的には120(10−マ/”C)程度が多い。 次に本発明の実施例を第1表に基いて説明する。同表は
本発明の実施例1乃至実施例10の各ガラス製造用のW
lに於ける型材の混合割合(重量%)と線膨張係数α(
10−’/”C>との関係を示している。但し、線膨張
係数αは800℃で2時間焼成した資料を200℃乃至
600℃の範囲で測定した値である。また、同表の型材
の種1llIにおいて、符号Aは炭酸マグネシウム。 符号Bは燐酸カルシウム、符号Cは酸化鉄、符号りは蛙
目粘土、符号Eはセリサイトである。 第  1  表 実施例】は炭酸マグネシウムを90重量%、セリサイト
10重量−の割合で充分混合し、これに水を加えて鋳込
成形(スリップキャスト)又はプレス成形で所望の形状
の型とする。これを乾燥した後、800℃で2時間保持
して焼成し1本発明のガラス製造用の型を得た。 このよう(して得られた本発明のガラス製造用の型は、
同一の型材及び同様の工程で得られた資料によると線膨
張係数が135.OX 10−?/”C(200〜60
0℃)であった。 また、この本発明のガラス製造用の塑に原料ガラスを充
填し、750℃で3時間保持して原料ガラスを加熱成形
処理し、しかる後、徐冷して製品ガラスを離脱したとこ
ろ、その離脱作業を容易に行うことができた。しかも、
乾燥時、焼成時及び加熱成形処理時に型に亀裂が生じた
形跡が全く無く、そして、製品ガラスは所望の美感を呈
するものとなっていた。 また、実施例2乃至実施例10は実施例1とはそれぞれ
屋材の種類及び混合割合は異なるが、工程はその実施例
IK準じている。こうして得られた実施例2乃至実施例
10による本発明のガラス製造用の型は、実施例】のそ
れと同様に、製品ガラスを離脱する作業を容易に行うこ
とができるものであり、しかも加熱成形処理時などで亀
裂が発生した形跡が無かった。 また第1表に線膨張係数αがそれぞれ示されているよう
に、原料ガラスの線膨張係数に近似する種々の線膨張係
数の型を得ることができ好適である。 以上の説明で明らかなように、本発明によれば、ガラス
製造用の型としての主要件を全て満足し得るので、従来
の問題点を一挙に%決でき。 その結果、美感を呈する所望のガラス製品を自在に製作
できるものである。
[It is a material that can be impregnated with water and then formed into a star of a desired shape.] After shaping, it is dried and fired. During firing, heat-resistant gypsum contains α
A phenomenon of transition from tridymite to β-tridemite, a phenomenon of transition from α-quartz to β-quartz, and a phenomenon of transition from β-quartz to β-tridymite) occur. The above phenomenon occurs during firing.9 Conventional heat-resistant gypsum molds cannot be expected to exhibit linear expansion characteristics, unlike glass, which exhibits linear expansion characteristics up to its transition point. there were. Furthermore, if heat-resistant plaster is used as in the past, it may not be possible to create a mold for glass manufacturing that approximates the desired expansion coefficient of glass, but as is well known, plaster itself does not heat at all. can't stand it. For this reason, in the case of glass manufacturing houses made of conventional heat-resistant plaster, especially in the case of large wrinkles, when installing the outer mold and inner mold at the same time, and when performing the IIIL material glass molding process. However, cracks are likely to occur, and when the expansion coefficients of the glass and the mold material are not close to each other, cracking and deformation become noticeable, making it impossible to obtain a desired glass product. Furthermore, the main requirements to be satisfied as a mold for glass manufacturing are as follows. (1) It is easy to mold into the desired N-shape, and no cracks occur during drying (no cracks or deformation occur when the glass is heated and formed. (3) The expansion coefficient of the glass and the expansion coefficient of the mold material are similar,
Moreover, the elongation characteristics of the shape material must be linear. (4) When releasing the mold! The material should easily peel off from the glass. The present invention eliminates the drawbacks of conventional heat-resistant plaster molds and
It is an object of the present invention to provide a mold that satisfies the above-mentioned main requirements for a glass manufacturing mold. That is, according to the present invention, 40% of clay is added to one or more of carbonates, phosphates, and iron chlorides depending on the linear expansion coefficient of the raw material glass.
There is a method of obtaining a mold for glass production by using a mold material having a mixing ratio of 5- to 5-weight by weight, molding the mold material, and then firing the mold material. The reason for limiting the mixing ratio of clays is as follows. In the case of glass manufacturing molds in which the mixing ratio of clay exceeds 40% by weight, the W material is too hard and delamination becomes extremely difficult; In the case of the mold, cracks are likely to occur in the mold during molding, drying, and when the glass is heated and molded. However, as in the present invention, there is little risk of cracks occurring during manufacture of the glass-making concentrate, which is made by mixing clay at a mixing ratio of 40% by weight at the highest and 5% by weight at the minimum. It has the advantage that the manufacturing work can be easily done in one row, and the expansion coefficient can be selected close to that of glass. In addition, when making 11 products, it is suitable for obtaining complex and large-sized items because there is almost no fear of cracking, and the WIIICI for glass manufacturing mentioned above is suitable for obtaining complex and large items. It satisfies all the main desired requirements and eliminates the drawbacks of conventional molds made of heat-resistant plaster. Furthermore, unlike conventional heat-resistant plaster molds, the manufactured mold for glass glue of the present invention has a linear elongation characteristic when heated, and K also has a linear elongation characteristic when cooled after heating. It is also extremely superior in terms of its shrinkage properties. Further, in the examples of the present invention, magnesium carbonate was selected as the carbonate, but calcium carbonate or the like may also be used. Furthermore, although calcium phosphate was selected as the phosphate, other phosphates may also be used. Furthermore, although Frogme clay and sericite were selected as clays, Kibushi clay or the like may also be used. Furthermore, carbonate, phosphoric acid, and iron oxide were selected as base materials because they have linear expansion coefficients close to those of the raw material glass. In addition. am tensile coefficient α (10-'/l
is as small as about 32 and as large as about 140 to 150, and generally about 120 (10-ma/"C). Next, embodiments of the present invention will be explained based on Table 1. The table shows W for manufacturing each glass of Examples 1 to 10 of the present invention.
The mixing ratio (wt%) of the mold material in l and the coefficient of linear expansion α (
10-'/"C>. However, the linear expansion coefficient α is the value measured in the range of 200°C to 600°C on materials fired at 800°C for 2 hours. In the type of mold material 1llI, the code A is magnesium carbonate, the code B is calcium phosphate, the code C is iron oxide, the code is frog's eye clay, and the code E is sericite. % by weight and 10% by weight of sericite, water is added to this and molded into the desired shape by slip casting or press molding. After drying, the mixture is heated at 800°C for 2 hours. A mold for producing glass of the present invention was obtained by holding and firing for a certain period of time.The mold for producing glass of the present invention thus obtained was
According to data obtained using the same mold material and a similar process, the coefficient of linear expansion is 135. OX10-? /”C(200~60
0°C). In addition, when the raw material glass was filled into the plastic for producing glass of the present invention and held at 750°C for 3 hours to heat-form the raw material glass, and then slowly cooled to separate the product glass, it was found that the glass was released. I was able to do the work easily. Moreover,
There was no evidence of cracks occurring in the mold during drying, firing, or hot molding, and the product glass had the desired aesthetic appearance. Further, although Examples 2 to 10 differ from Example 1 in the type of roofing material and the mixing ratio, the steps are similar to Example IK. The thus obtained molds for producing glass according to the present invention according to Examples 2 to 10 can be easily removed from the product glass as in Example 1, and can be heated and molded. There was no evidence of cracks occurring during processing. Further, as shown in Table 1 for each linear expansion coefficient α, it is possible to obtain various types of linear expansion coefficients that approximate the linear expansion coefficient of the raw glass. As is clear from the above description, according to the present invention, all the main requirements for a mold for glass production can be satisfied, so that the problems of the conventional mold can be solved at once. As a result, desired aesthetic glass products can be freely produced.

Claims (1)

【特許請求の範囲】 原料ガラスの線膨張係数に応じて炭酸塩、燐酸塩、酸化
鉄の−又は二以上に対し、粘土類を40重量嘩乃至5重
量−の混合割合とした型材を用い、該型材を成形後、焼
成し【なることを特徴とするガラス製造用の!I!。
[Claims] Using a mold material in which clay is mixed in a proportion of 40 to 5 weight by weight with one or more of carbonate, phosphate, and iron oxide, depending on the linear expansion coefficient of the raw material glass, After molding the mold material, it is fired to become a glass manufacturing product. I! .
JP56148717A 1981-09-22 1981-09-22 Die for glass manufacture Pending JPS5855367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56148717A JPS5855367A (en) 1981-09-22 1981-09-22 Die for glass manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56148717A JPS5855367A (en) 1981-09-22 1981-09-22 Die for glass manufacture

Publications (1)

Publication Number Publication Date
JPS5855367A true JPS5855367A (en) 1983-04-01

Family

ID=15459016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56148717A Pending JPS5855367A (en) 1981-09-22 1981-09-22 Die for glass manufacture

Country Status (1)

Country Link
JP (1) JPS5855367A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61106430A (en) * 1984-10-31 1986-05-24 Noritake Co Ltd Ceramic die for blow-molding glass article
JPS6414122A (en) * 1987-07-07 1989-01-18 Asahi Glass Co Ltd Mold for bending plate glass
JPH0330232U (en) * 1989-07-31 1991-03-25

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61106430A (en) * 1984-10-31 1986-05-24 Noritake Co Ltd Ceramic die for blow-molding glass article
JPH0223485B2 (en) * 1984-10-31 1990-05-24 Noritake Co Ltd
JPS6414122A (en) * 1987-07-07 1989-01-18 Asahi Glass Co Ltd Mold for bending plate glass
JPH0330232U (en) * 1989-07-31 1991-03-25

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