JPS6228095B2 - - Google Patents
Info
- Publication number
- JPS6228095B2 JPS6228095B2 JP7768580A JP7768580A JPS6228095B2 JP S6228095 B2 JPS6228095 B2 JP S6228095B2 JP 7768580 A JP7768580 A JP 7768580A JP 7768580 A JP7768580 A JP 7768580A JP S6228095 B2 JPS6228095 B2 JP S6228095B2
- Authority
- JP
- Japan
- Prior art keywords
- glass
- water mist
- plate glass
- plate
- air
- 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.)
- Expired
Links
- 239000005357 flat glass Substances 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000003595 mist Substances 0.000 claims description 41
- 239000011521 glass Substances 0.000 claims description 22
- 238000005728 strengthening Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 9
- 230000002787 reinforcement Effects 0.000 description 9
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/02—Tempering or quenching glass products using liquid
- C03B27/028—Tempering or quenching glass products using liquid the liquid being water-based
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/052—Tempering or quenching glass products using gas for flat or bent glass sheets being in a vertical position
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Description
【発明の詳細な説明】
本発明は歪点以上の温度に加熱した板ガラスに
冷却媒体を吹き付けて板ガラスを強化する方法の
改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for strengthening plate glass by spraying a cooling medium onto the plate glass heated to a temperature equal to or higher than its strain point.
従来、歪点以上に加熱した板ガラスに冷却媒体
を吹き付けて板ガラスを強化する方法として、板
ガラスに近接して設けた複数個の噴出口より空
気、水ミストと空気とを予め混合したもの、或い
は直接水ミストを板ガラスに吹き付けて強化する
方法等が知られている。 Conventionally, as a method of strengthening plate glass by spraying a cooling medium onto plate glass heated above its strain point, air, water mist and air mixed in advance, or directly A method of strengthening plate glass by spraying water mist on it is known.
しかし、板ガラスに空気を吹き付けて強化する
方法においては、板ガラス全面にわたり均一に空
気を吹き付けると、板ガラスの周返域に比して中
央域に吹き付けられた空気が吹き付け領域より去
り難いので、加熱された板ガラスと熱交換された
空気が、板ガラスの中央域に残留する時間が長く
なり、板ガラスの中央域の強化度が周辺部に比し
て低下するという傾向があつた。また、その欠点
を補うために板ガラスの中央域の空気の圧力を周
辺部に比して高くすると板ガラスに歪、変形等が
生じるものであつた。 However, in the method of strengthening plate glass by blowing air on it, if air is blown uniformly over the entire surface of the plate glass, it is difficult for the air blown to the central area of the plate glass to leave the blown area compared to the surrounding area of the plate glass, so it is heated. There was a tendency for the air that had exchanged heat with the sheet glass to remain in the central region of the sheet glass for a longer period of time, and the degree of reinforcement in the central region of the sheet glass was lower than that in the periphery. Furthermore, in order to compensate for this drawback, if the air pressure in the central area of the glass plate is made higher than in the peripheral area, the glass plate would be distorted or deformed.
水ミストと空気を予め混合して、加熱した板ガ
ラスに吹き付けて強化する方法においては、水ミ
ストと空気を混合する過程（混合器）で水ミスト
の粒径が大きくなり、水滴状となつた水が板ガラ
スに接触すると板ガラスが破損したり、また板ガ
ラスの冷却能を部分的に変化させる等の制御が困
難なものであつた。 In the method of strengthening by mixing water mist and air in advance and spraying it on heated plate glass, the particle size of the water mist increases during the process of mixing the water mist and air (mixer), and the water becomes droplets. When it comes into contact with the glass plate, the glass plate may be damaged or the cooling capacity of the glass plate may be partially changed, making it difficult to control.
また、水ミストのみを直接加熱した板ガラスに
吹き付けて強化する方法においては、水ミストは
付勢され難く、水ミストの吹き付け位置を限定し
て板ガラスの冷却能を部分的に変化させる等の制
御が困難なものであつた。 In addition, in the method of directly spraying only water mist onto heated plate glass to strengthen it, the water mist is difficult to energize, and it is difficult to control the spraying position of the water mist by partially changing the cooling capacity of the plate glass. It was difficult.
本発明は前記の如き従来法の欠点を解消するも
のであつて、空気と水ミストとを別個に板ガラス
に吹き付けて水ミストと空気との冷却能の差を利
用し、水ミストの板ガラスに接触する位置を制御
することにより板ガラス全面に亘り強化度を均一
にしたり、あるいは板ガラスの強化度を局部的に
変化させることを容易にする板ガラスの強化法を
提供するものである。 The present invention solves the drawbacks of the conventional method as described above, and utilizes the difference in cooling ability between the water mist and air by separately spraying air and water mist onto the glass plate, and makes contact with the water mist onto the glass plate. To provide a method for strengthening a plate glass, which makes it easy to make the degree of strengthening uniform over the entire surface of the glass plate or to locally change the degree of strengthening of the plate glass by controlling the position where the glass plate is strengthened.
すなわち、本発明は歪点以上の温度に加熱した
板ガラスに冷却媒体を吹き付けて板ガラスを強化
する方法において、前記板ガラスに近接して設け
た複数個の空気噴出口より前記板ガラス全面に亘
り空気を吹き付けるとともに、前記板ガラスに近
接して前記空気噴出口の間に設けた１もしくは複
数個の水ミスト噴出口より水ミストを前記板ガラ
スに直接吹き付けることを特徴とするものであ
る。 That is, the present invention provides a method for strengthening a plate glass by spraying a cooling medium onto the plate glass heated to a temperature equal to or higher than the strain point, in which air is blown over the entire surface of the plate glass from a plurality of air outlets provided close to the plate glass. In addition, water mist is sprayed directly onto the glass plate from one or more water mist outlets provided between the air outlets in the vicinity of the glass plate.
第１図および第２図は本発明を実施する場合の
一態様を示すものである。図において、板ガラス
２は板ガラス吊り具１により端部を吊り下げら
れ、加熱炉で歪点より高い温度、例えば550〜700
℃に加熱される。加熱された板ガラス２は急冷装
置３内に移送され、冷却媒体を吹き付けて急冷強
化される。急冷装置３は吊り下げられた板ガラス
２に近接して水平方向に伸びる複数個の空気噴出
用パイプ４およびその空気噴出用パイプ４の間で
板ガラス２の中央域に位置するように設けた複数
個の水ミスト発生ノズル５を具えている。空気噴
出用パイプ４には複数個の孔もしくはスリツト６
が設けられ、パイプ４の他端部より供給される圧
縮空気を板ガラス２に吹き付け板ガラス全面を急
冷するようになつている。水ミスト発生ノズル５
は例えば水と圧縮空気とを超音波発生ノズルに供
給し霧状の液体として水ミスト７を板ガラス２に
吹き付けるようになつている。 FIGS. 1 and 2 show one embodiment of the present invention. In the figure, a plate glass 2 is suspended at its end by a plate glass hanger 1, and heated in a heating furnace to a temperature higher than the strain point, e.g. 550 to 700.
heated to ℃. The heated plate glass 2 is transferred into a quenching device 3, and is rapidly cooled and strengthened by spraying a cooling medium thereon. The quenching device 3 includes a plurality of air jetting pipes 4 extending horizontally in the vicinity of the suspended glass sheet 2, and a plurality of air jetting pipes 4 provided so as to be located in the central area of the sheet glass 2 between the air jetting pipes 4. The water mist generating nozzle 5 is equipped with a water mist generating nozzle 5. The air blowing pipe 4 has a plurality of holes or slits 6.
is provided, and the compressed air supplied from the other end of the pipe 4 is blown onto the glass plate 2 to rapidly cool the entire surface of the glass plate. Water mist generation nozzle 5
For example, water and compressed air are supplied to an ultrasonic generation nozzle to spray a water mist 7 onto the glass plate 2 as a mist-like liquid.
水ミストの吹き付け量としては20〜400ml／
m2・secとすることが好ましく、20ml／m2・sec以
下では強化度が低く、400ml／m2・sec以上では冷
却能が大き過ぎて板ガラスの破損を生ずるように
なる。 The amount of water mist sprayed is 20 to 400ml/
m 2 ·sec is preferable; if it is less than 20 ml/m 2 ·sec, the degree of reinforcement will be low, and if it is more than 400 ml/m 2 ·sec, the cooling capacity will be too large and the plate glass will break.
なお、第１図および第２図に示した態様では水
ミスト発生ノズル５を板ガラス２の中央域に位置
せしめた場合を示したが、このようにすれば板ガ
ラス全面に亘り吹き付けられる圧縮空気とは別個
に比較的冷却が不十分となりやすい板ガラス中央
域を水ミストで冷却することができ、板ガラス全
面に亘りほぼ均一に強化することができる。また
水ミスト発生ノズル５の設置位置を適宜変えるこ
とにより、板ガラスの強化度を部分的に変えるこ
とも可能である。 In the embodiments shown in FIGS. 1 and 2, the water mist generating nozzle 5 is positioned in the central area of the glass plate 2, but if this is done, the compressed air that is blown over the entire surface of the glass plate Separately, the central region of the plate glass, which tends to be relatively insufficiently cooled, can be cooled with water mist, and the entire surface of the plate glass can be strengthened almost uniformly. Furthermore, by appropriately changing the installation position of the water mist generating nozzle 5, it is also possible to partially change the degree of reinforcement of the plate glass.
以上のような本発明によれば、歪点以上に加熱
した板ガラスに近接して設けた空気噴出口により
空気を板ガラス全面に亘り吹き付けることによ
り、同じく板ガラスに近接して空気噴出口の間に
設けた１もしくは複数個の水ミスト噴出口より噴
出した水ミストが空気噴出力に誘引されて直接板
ガラスに吹き付けられるので、水ミストの粒径が
増大することが防止され、水ミストの有効利用が
きるとともに板ガラスの破損が防止でき、また空
気噴出口と水ミスト噴出口が独立しているので、
水ミストおよび空気の冷却能の差を利用して水ミ
スト噴出口の取り付け位置を適宜調整することに
より、板ガラス全面に亘り強化度を均一にした
り、局部的に強化度を変化させることが容易であ
るという著効を有する。 According to the present invention as described above, by blowing air over the entire surface of the plate glass using the air outlet provided close to the plate glass heated above the strain point, air is blown across the entire surface of the plate glass. The water mist ejected from one or more water mist ejection ports is attracted by the air ejection force and is blown directly onto the glass plate, which prevents the particle size of the water mist from increasing and makes effective use of the water mist. This also prevents damage to the plate glass, and since the air outlet and water mist outlet are independent,
By appropriately adjusting the installation position of the water mist outlet by taking advantage of the difference in cooling capacity between water mist and air, it is easy to make the degree of reinforcement uniform over the entire surface of the glass sheet or to change the degree of reinforcement locally. It has the effect of being.
以下に本発明の実施例を示す。 Examples of the present invention are shown below.
実施例 １
650℃に加熱した大きさ500×500mm、厚さ3.3mm
の板ガラスを第１図および第２図に示される如き
装置により空気圧を４Kg／cm2として空気噴出用パ
イプより空気を噴出させ、同時に水ミスト発生ノ
ズルより発生する水ミストの吹き付け量を50ml／
m2・secおよび100ml／m2・secとして板ガラスの
中央域に吹き付けて冷却強化した。その際の対向
して設けた空気噴出用パイプの間隔は50mmとし
た。これらおよび比較例として空気のみ（４Kg／
cm2）を板ガラスに吹き付けて冷却強化したものの
強化度を測定した。強化度の測定は板ガラスを中
央部より破砕した場合の破砕数（個／50mm角）で
表わした。その結果を第３図に示す。第３図にお
いて曲線は空気のみ、曲線は中央域に水ミス
トを付加した場合（50ml／m2・sec）、曲線は中
央域に水ミストを付加した場合（100ml／m2・
sec）の結果を示す。この第３図の結果から、本
発明に従つて空気と水ミストとを組み合わせるこ
とにより板ガラスがより強化されることがわか
る。Example 1 Heated to 650℃, size 500×500mm, thickness 3.3mm
Using the device shown in Figures 1 and 2, air is blown out from the air jet pipe at an air pressure of 4 kg/cm 2 , and at the same time, the amount of water mist generated from the water mist generating nozzle is 50 ml/cm 2 .
m 2 ·sec and 100ml/m 2 ·sec was sprayed onto the central area of the plate glass to strengthen it by cooling. At that time, the interval between the air jetting pipes that were provided oppositely was 50 mm. These and comparative examples include air only (4Kg/
cm 2 ) was sprayed onto plate glass to strengthen it by cooling, and the degree of strengthening was measured. The degree of reinforcement was measured by the number of fractures (pieces/50 mm square) when the plate glass was crushed from the center. The results are shown in FIG. In Figure 3, the curve is for air only, the curve is for when water mist is added to the central region (50 ml/m 2 sec), and the curve is for the case when water mist is added to the central region (100 ml/m 2 sec).
sec). The results in FIG. 3 show that the glass sheet is further strengthened by combining air and water mist according to the present invention.
実施例 ２
板ガラスの温度および冷却装置は実施例１と同
様にし、空気圧および水ミスト量を変化させて板
ガラスを急冷強化した。板ガラスの強化度の測定
は実施例１と同様にした。これらの結果を第４図
に示す。図中の曲線Ａは空気圧４Kg／cm2、曲線Ｂ
は空気圧５Kg／cm2の場合を示す。第４図より水ミ
スト量が20ml／m2・sec以上になると板ガラスが
良好に強化されることがわかる。Example 2 The temperature of the plate glass and the cooling device were the same as in Example 1, and the air pressure and amount of water mist were changed to rapidly cool and strengthen the plate glass. The degree of reinforcement of the plate glass was measured in the same manner as in Example 1. These results are shown in FIG. Curve A in the figure is an air pressure of 4Kg/cm 2 and curve B
indicates the case where the air pressure is 5Kg/cm 2 . From FIG. 4, it can be seen that when the amount of water mist is 20 ml/m 2 ·sec or more, the plate glass is strengthened well.
第１図は本発明を実施する際の装置の１例を示
す概略側面図、第２図は第１図の概略正面図であ
る。第３図は実施例における強化度測定結果図で
ある。第４図は他の実施例における強化度測定結
果図である。
１……板ガラス吊り具、２……板ガラス、３…
…急冷装置、４……空気噴出用パイプ、５……水
ミスト発生ノズル、６……孔もしくはスリツト、
７……水ミスト。
FIG. 1 is a schematic side view showing an example of an apparatus for carrying out the present invention, and FIG. 2 is a schematic front view of FIG. 1. FIG. 3 is a diagram showing the results of measurement of the degree of reinforcement in the example. FIG. 4 is a diagram showing the results of measurement of the degree of reinforcement in another example. 1... Plate glass hanger, 2... Plate glass, 3...
...Rapid cooling device, 4... Air jet pipe, 5... Water mist generation nozzle, 6... Hole or slit,
7...Water mist.
Claims (1)
体を吹き付けて板ガラスを強化する方法におい
て、前記板ガラスに近接して設けた複数個の空気
噴出口より前記板ガラス全面に亘り空気を吹き付
けるとともに、前記板ガラスに近接して前記空気
噴出口の間に設けた１もしくは複数個の水ミスト
噴出口より水ミストを前記板ガラスに直接吹き付
けることを特徴とする板ガラスの強化方法。 ２ 前記水ミストを20〜400ml／m2・secにて吹き
付けることを特徴とする特許請求の範囲第１項記
載の板ガラスの強化方法。 ３ 前記水ミストを前記板ガラスの中央域に吹き
付けることを特徴とする特許請求の範囲第１項記
載の板ガラスの強化方法。[Claims] 1. A method of strengthening plate glass by spraying a cooling medium onto the plate glass heated to a temperature equal to or higher than its strain point, in which air is flowed over the entire surface of the plate glass from a plurality of air outlets provided in close proximity to the plate glass. A method for strengthening a plate glass, comprising spraying water mist directly onto the glass plate from one or more water mist outlets provided between the air outlets in the vicinity of the glass plate. 2. The method for strengthening plate glass according to claim 1, characterized in that the water mist is sprayed at a rate of 20 to 400 ml/m 2 ·sec. 3. The method for strengthening plate glass according to claim 1, characterized in that the water mist is sprayed onto a central region of the plate glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7768580A JPS573727A (en) | 1980-06-11 | 1980-06-11 | Tempering of sheet glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7768580A JPS573727A (en) | 1980-06-11 | 1980-06-11 | Tempering of sheet glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS573727A JPS573727A (en) | 1982-01-09 |
| JPS6228095B2 true JPS6228095B2 (en) | 1987-06-18 |
Family
ID=13640744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7768580A Granted JPS573727A (en) | 1980-06-11 | 1980-06-11 | Tempering of sheet glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS573727A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08928B2 (en) * | 1988-09-29 | 1996-01-10 | 川崎製鉄株式会社 | Refining method for high N stainless steel |
| KR20020061567A (en) * | 2002-06-19 | 2002-07-24 | 유병섭 | A cooling device of strengthened glass manufacture system |
-
1980
- 1980-06-11 JP JP7768580A patent/JPS573727A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS573727A (en) | 1982-01-09 |
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