JPS63201035A - Production of tempered glass - Google Patents
Production of tempered glassInfo
- Publication number
- JPS63201035A JPS63201035A JP2941787A JP2941787A JPS63201035A JP S63201035 A JPS63201035 A JP S63201035A JP 2941787 A JP2941787 A JP 2941787A JP 2941787 A JP2941787 A JP 2941787A JP S63201035 A JPS63201035 A JP S63201035A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- glass
- deposit
- heated
- electric furnace
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000005341 toughened glass Substances 0.000 title claims description 3
- 239000011521 glass Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000011812 mixed powder Substances 0.000 claims abstract description 7
- 238000003303 reheating Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 239000006063 cullet Substances 0.000 abstract description 4
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract description 3
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 241000975357 Salangichthys microdon Species 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000005335 volcanic glass Substances 0.000 description 1
Landscapes
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Glass Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は天然に大量に存在し、現在あまり多くは利用さ
れていないシラスをはじめとする火山ガラス質堆積物を
有効に活用し、強度が大なるガラスを製造する方法に関
するものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention effectively utilizes volcanic glassy deposits such as whitebait, which exists in large quantities in nature and is currently not used in large quantities. The present invention relates to a method for producing large glass.
〈従来の技術〉
火山ガラス堆積物はＳｉＯ□を主成分として約７０重量
％、その他にＡｌＶ２Ｏ３，Ｎａ２Ｏ，Ｋ２Ｏ等を含む
一種のけい酸塩であり、我が国に広く分布しており、そ
の利用方法も多く研究されている。例えば、南九州に広
く分布する火山ガラス質堆積物の一種であるシラスの利
用方法の一つとしてガラスへの応用があり、特公昭５２
−１７３３８号公報で示される様な方法が提案されてい
る。この特公昭５２−１７３３８号公報で示されるのは
、シラスに対してＣａｂ、 ＺｒＯ２及びＺｎＯを添加
して、耐アルカリ性に富んだガラスを製造しようとする
方法である。<Prior art> Volcanic glass deposits are a type of silicate containing approximately 70% by weight of SiO□ as a main component and other substances such as AlV2O3, Na2O, K2O, etc., and are widely distributed in Japan. has also been extensively researched. For example, one way to use whitebait, which is a type of volcanic glassy deposit widely distributed in southern Kyushu, is to apply it to glass.
A method as shown in Japanese Patent No. 17338 has been proposed. This Japanese Patent Publication No. 52-17338 discloses a method of producing glass with high alkali resistance by adding Cab, ZrO2 and ZnO to shirasu.
〈発明が解決しようとする問題点〉
上記した特公昭５２−１７３３８号公報で示される方法
によるガラスは、耐アルカリ性には富むが、その強度が
弱く特殊な用途にしか利用出来ないという欠点があった
。<Problems to be Solved by the Invention> Although the glass produced by the method disclosed in Japanese Patent Publication No. 17338/1987 has high alkali resistance, it has the disadvantage of low strength and can only be used for special purposes. Ta.
本発明は先に火山ガラス質堆積物を原料とし強度が大な
るガラスを製造し得る方法を開発し、既に特許出願（特
願昭６０−２６６６５１号）を行なっている。The present invention has previously developed a method for producing strong glass using volcanic glassy deposits as a raw material, and has already filed a patent application (Japanese Patent Application No. 60-266651).
この特願昭６０−２６６６５１号による方法は、今迄活
用度が低かった火山ガラス質堆積物を活用し、相当の強
度を有するガラスを得るという目的は達成出来るものの
、その後の研究により製造に要する時間が長過ぎる、更
にはなお強度不足であるという更なる要改良点のある事
が判明した。Although the method described in Japanese Patent Application No. 60-266651 can achieve the objective of obtaining glass with considerable strength by utilizing volcanic glassy deposits, which have been underutilized until now, subsequent research has revealed that It was found that further improvements were needed, such as the time being too long and the strength being insufficient.
本発明はそれらの要改良点を満足すべきガラスの製造法
を提供する事を目的とする。It is an object of the present invention to provide a method for manufacturing glass that satisfies these improvements.
〈問題点を解決する為の手段〉
本発明は上記目的を達成する為に次の如き方法を採用す
るものである。即ち、人ｌλＯｊ粉末５〜８重量％、Ｌ
ｉ’２０粉末５〜９重量％、残部火山ガラス質堆積物粉
末なる配合の混合粉末を、加熱溶融した後、歪除去処理
を施し、更に５００〜６５０℃の温度下で１２〜２４時
間再加熱することを特徴とする強化ガラスの製造法であ
る。<Means for Solving the Problems> In order to achieve the above object, the present invention employs the following method. That is, human lλOj powder 5-8% by weight, L
A mixed powder containing 5 to 9% by weight of i'20 powder and the remainder volcanic glassy deposit powder is heated and melted, subjected to strain removal treatment, and then reheated at a temperature of 500 to 650°C for 12 to 24 hours. This is a method for manufacturing tempered glass characterized by:
上記混合粉末中の人ｔ！２０３は、得られるガラスのマ
トリックスを強化し、ガラスの強度を高める働きを奏す
るものであり、その強度向上の効果は５重量％未満では
顕著ではないが、８重量％を越えるとガラスの融点が高
くなり過ぎる為にｋ１２０３の量は５〜８重景重量範囲
が望ましい。又ＬｉｚＯはβ−スボデューメン（Ｌｉｚ
Ｏ・人１２０３・４ＳｉＯｚ）結晶の成長核となり、ガ
ラスを強化せしめるものであり、その効果は５重量％未
満では顕著でなく、一方９重量％を越える如く多量にな
ると、融点が低下し過ぎ、結晶が粗大化して逆に強度低
下があるのでＬｉ２Ｏの量は５〜９重量％の範囲が望ま
しい。The person in the above mixed powder! 203 works to strengthen the matrix of the resulting glass and increase the strength of the glass, and its strength-improving effect is not noticeable when it is less than 5% by weight, but when it exceeds 8% by weight, the melting point of the glass decreases. Since it becomes too high, the amount of k1203 is preferably in the range of 5 to 8 double weights. Also, LizO is β-subodumene (Liz
It acts as a growth nucleus for crystals (O・Human1203.4SiOz) and strengthens the glass, and its effect is not noticeable when it is less than 5% by weight, while when it is in a large amount exceeding 9% by weight, the melting point decreases too much. The amount of Li2O is preferably in the range of 5 to 9% by weight since the crystals become coarse and the strength decreases.
又歪除去処理の後の再加熱は、得られるガラスが出来る
限り微細結晶である事の要性から、必要最低の温度範囲
及び加熱時間を決めたもので、温度は５００〜６５０℃
、時間は１２〜２４時間の範囲とした。In addition, for reheating after the strain removal treatment, the minimum necessary temperature range and heating time were determined because it is necessary for the glass obtained to be as finely crystalline as possible, and the temperature was 500 to 650°C.
The time ranged from 12 to 24 hours.
〈実施例及び作用〉
以下本発明の実施例を示し、他の比較例と比較考量し乍
ら本発明方法を詳述する。<Examples and Effects> Hereinafter, examples of the present invention will be shown, and the method of the present invention will be explained in detail while comparing and considering other comparative examples.
この実施例では、火山ガラス質堆積物として鹿児島県吉
用町に産する所謂吉田シラスを用いた。In this example, so-called Yoshida Shirasu produced in Yoshimochi Town, Kagoshima Prefecture was used as the volcanic glassy deposit.
その吉田シラスの化学組成を下記第１表に示す。The chemical composition of Yoshida whitebait is shown in Table 1 below.
この様な吉田シラスの未水洗品粉末９７．６０ｇ、市販
の＾１１０３粉末７．１１ｇ、市販ＬｉｚＣ−粉末６０
７ｇを基本とし、１ｇ−Ｌｏｓｓにより換算した場合で
吉田シラス１０２．９３ｇ 、人１ｚＯＢ ７． ｌ１
ｇ 、 Ｌｉ２ｃｏ、 ｉｓ、 Ｏｌｇとなる量ずつを
混合して混合粉末を得た。この混合粉末化学組成も同じ
く下記第１表に示す。97.60 g of unwashed Yoshida whitebait powder, 7.11 g of commercially available ^1103 powder, and commercially available LizC-powder 60
Based on 7g, when converted by 1g-Loss, Yoshida whitebait is 102.93g, person 1zOB 7. l1
A mixed powder was obtained by mixing the following amounts: g, Li2co, is, and Olg. The chemical composition of this mixed powder is also shown in Table 1 below.
第１表
（重量％）
上記混合粉末を、白金皿に入れ、これを電気炉内にて１
６００℃で１時間溶融しカレットを造った。Table 1 (wt%) The above mixed powder was placed in a platinum dish and heated in an electric furnace for 1
Cullet was prepared by melting at 600°C for 1 hour.
次にとのカレットを７４メツシユ以下に粉砕し、再び白
金皿に入れ、電気炉内にて１６００℃１時間溶融を行な
い、引き続いて歪除去処理を行なった。この歪除去処理
は上記溶融に用いた電気炉とは別に６００℃に保持した
炉内に、ステンレス鋼製の蓋付容器を入れ、その中に更
にカーボン製の蓋付容器を入れ、該カーボン製容器の周
囲にはコークス粉を詰めた状態の容器を準備し、上記白
金皿内の溶融状混合物をそのカーボン製容器に移し、施
蓋状態下に３０分間保保持体冷するという方法を採った
。Next, the cullet was crushed to 74 meshes or less, placed in a platinum dish again, and melted in an electric furnace at 1600°C for 1 hour, followed by strain removal treatment. This strain removal treatment is carried out by placing a lidded container made of stainless steel in a furnace maintained at 600°C, separate from the electric furnace used for the melting process, and placing a lidded container made of carbon into the furnace, and then placing a lidded container made of carbon into the furnace. A container filled with coke powder was prepared around the container, the molten mixture in the platinum dish was transferred to the carbon container, and the container was cooled for 30 minutes with the lid closed. .
この様にして得られたガラスを切断、研磨して５ Ｘ
５ Ｘ １５（ｍ＋ａ）の試料を作り、その後５００〜
６６０℃の範囲で２０℃置きの各温度にて、それぞれ−
日間保持した後徐冷した製品の曲げ強度を測定した結果
を図面に示す。The glass thus obtained was cut and polished to 5
Make a 5 x 15 (m+a) sample, then 500 ~
- at each temperature of 20°C in the range of 660°C.
The drawing shows the results of measuring the bending strength of the product that was kept for a day and then slowly cooled.
この結果から再加熱温度が５００℃未満では得られるガ
ラスの強度が市販コツプ用のガラスのそれと比べあまり
向上しておらず、その後次第に向上をするが、一方６２
０℃を越えると再び市販ガラスの強度に近ずく事、強度
向上が著しいのは５２０〜５８０℃の範囲である事が判
る。These results show that when the reheating temperature is lower than 500°C, the strength of the glass obtained does not improve much compared to that of commercially available glass for pots, and after that it gradually improves;
It can be seen that when the temperature exceeds 0°C, the strength approaches that of commercially available glass again, and that the strength is significantly improved in the range of 520 to 580°C.
特に再加熱温度が５４０℃の場合は６１００ｋｇ／ｃｆ
ｆｒなる大きな値を示しており、これは市販ガラスと比
べれば勿論、先に本発明者等の出願した特願昭６０−２
６８６５１号による方法の場合が６７０℃、７日間の加
熱で最高４５４０ｋｇ／ｃ／なる値と比べても著しく大
きな値である。Especially when the reheating temperature is 540℃, it is 6100kg/cf.
This shows a large value of fr, which is of course higher than that of commercially available glass, as well as the value of the patent application filed by the present inventors in 1986-2.
This value is significantly larger than the maximum value of 4,540 kg/c/in the case of the method according to No. 68651, which is heated at 670° C. for 7 days.
〈発明の効果〉
以上述べて来た如く、本発明によれば短時間かっ低温の
再加熱処理で曲げ強度が大なるガラスを得る事が出来、
強度面での効果があると共に製造は短時間かつ低コスト
で行なえるという利点がある。<Effects of the Invention> As described above, according to the present invention, glass with high bending strength can be obtained through short and low-temperature reheating treatment.
It has the advantage of being effective in terms of strength and can be manufactured in a short time and at low cost.
図面は本発明実施例で得たガラスの曲げ強度を示すグラ
フ。
特許出願人 工業技術院長（他１名）
復代理人 有吉 教晴
再加熱温度 じＣ）The drawing is a graph showing the bending strength of glasses obtained in Examples of the present invention. Patent applicant Director of the Agency of Industrial Science and Technology (1 other person) Sub-agent Noriharu Ariyoshi Reheating temperature JC)
Claims (1)
５〜９重量％、残部火山ガラス質堆積物粉末なる配合の
混合粉末を、加熱溶融した後、歪除去処理を施し、更に
５００〜６５０℃の温度下で１２〜２４時間再加熱する
ことを特徴とする強化ガラスの製造法。1. After heating and melting a mixed powder with a composition of 5 to 8% by weight of Al_2O_3 powder, 5 to 9% by weight of Li_2O powder, and the balance being volcanic glassy deposit powder, strain removal treatment is performed, and the mixture is further heated at a temperature of 500 to 650°C. A method for producing tempered glass, characterized by reheating the glass for 12 to 24 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2941787A JPS63201035A (en) | 1987-02-10 | 1987-02-10 | Production of tempered glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2941787A JPS63201035A (en) | 1987-02-10 | 1987-02-10 | Production of tempered glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63201035A true JPS63201035A (en) | 1988-08-19 |
| JPH0432021B2 JPH0432021B2 (en) | 1992-05-28 |
Family
ID=12275552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2941787A Granted JPS63201035A (en) | 1987-02-10 | 1987-02-10 | Production of tempered glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63201035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556704A (en) * | 2015-01-06 | 2015-04-29 | 天津仁新玻璃材料有限公司 | Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass |
-
1987
- 1987-02-10 JP JP2941787A patent/JPS63201035A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104556704A (en) * | 2015-01-06 | 2015-04-29 | 天津仁新玻璃材料有限公司 | Method for preparing nano-microlite plate by utilizing CRT (Cathode Ray Tube) screen glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0432021B2 (en) | 1992-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |