JPH01212251A - Glass for sealing - Google Patents
Glass for sealingInfo
- Publication number
- JPH01212251A JPH01212251A JP3470888A JP3470888A JPH01212251A JP H01212251 A JPH01212251 A JP H01212251A JP 3470888 A JP3470888 A JP 3470888A JP 3470888 A JP3470888 A JP 3470888A JP H01212251 A JPH01212251 A JP H01212251A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- sealing
- outer tube
- thermal expansion
- tube
- 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
- 239000011521 glass Substances 0.000 title abstract description 24
- 238000007789 sealing Methods 0.000 title abstract description 7
- 239000005394 sealing glass Substances 0.000 claims description 13
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 229910011255 B2O3 Inorganic materials 0.000 abstract 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000004031 devitrification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
- C03C8/245—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders containing more than 50% lead oxide, by weight
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (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、二重管温度針においてガラス外管とこれに挿
入したガラス毛細管との接合に使用される封着用ガラス
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sealing glass used for joining a glass outer tube and a glass capillary tube inserted therein in a double-tube temperature needle.
従来、二重管温度針たとえば平型ガラス体温計（以下、
体温計と称す）の製造において、ガラス外管の一端に設
けられた水銀槽の上端部に、一端に突縁部を形成したガ
ラス毛細管の先端を挿入し外管内壁と毛細管の先端突縁
部との接触部空間に粉末粒状の封着用ガラスを充填し、
この封着用ガラスを外部から加熱溶融して、外管と毛細
管とを接合させる方法が採用されている。一般に体温計
の外管と毛細管とを形成するガラスは周知のエナ１６”
が使用され、封着用ガラスは熱膨張係数がエナ１６”の
８０ Ｘ １０−’／℃と＃１は等しい低融点ガラスで
、外管ガラスを軟化溶融させない温度限界以下で十分接
合処理できるものである。Traditionally, double-tube temperature needles, such as flat glass thermometers (hereinafter referred to as
In the manufacture of thermometers, the tip of a glass capillary tube with a rim formed at one end is inserted into the upper end of a mercury bath provided at one end of a glass outer tube, and the inner wall of the outer tube and the ridge at the tip of the capillary are connected. Fill the contact space with powder granular sealing glass,
A method is employed in which the sealing glass is heated and melted from the outside to join the outer tube and the capillary tube. Generally, the glass that forms the outer tube and capillary tube of a thermometer is the well-known Ena 16" glass.
The sealing glass is a low melting point glass with a coefficient of thermal expansion equal to 80 x 10-'/℃ and #1, which has a coefficient of thermal expansion of 16" and can be sufficiently bonded at a temperature below the temperature limit that does not soften and melt the outer tube glass. be.
しかるく上記の封着用ガラスを用いたガラス外管と毛Ｍ
会との接合部は、残留歪が１９６Ｘ１０’Ｎ／ｎ／ （
２００麺／ｃＩＩ）以上あるために、体温計の製造工程
または完成後の製品において、外部からの衝撃により前
記接合部にクラックを生ずるものがある。封着用ガラス
の熱膨張係数を外管ガラスの熱膨張係数よシ小さくすれ
ば、前記接合部の残留歪が小さくなるが、単にＳｔＯ，
等の成分を増加して封着用ガラスの熱膨張係数を下げる
と、封着源ｆ（６２０℃）が上昇し、外管と毛細管とを
接合する際に外管が変形するととくなる。従って封着温
度が従来の程度で熱膨張係数を８０ Ｘ １０−マ／℃
よシ小さくした封着用ガラスが望まれている。However, a glass outer tube using the above-mentioned sealing glass and a hair M
The residual strain at the joint with the plate is 196X10'N/n/ (
200 noodles/cII) or more, cracks may occur in the joints due to external impact during the manufacturing process of thermometers or in finished products. If the thermal expansion coefficient of the sealing glass is made smaller than the thermal expansion coefficient of the outer tube glass, the residual strain in the joint will be reduced;
If the coefficient of thermal expansion of the sealing glass is lowered by increasing the components such as, the sealing source f (620° C.) will increase, and the outer tube will be deformed when joining the outer tube and the capillary tube. Therefore, when the sealing temperature is at the conventional level, the coefficient of thermal expansion is 80 x 10-ma/℃.
There is a need for a much smaller sealing glass.
本発明は上記事情を考慮してなされたもので、体温計の
外管と毛細管とを低温で接合することができ、しかも接
合部にクラックが発生することのない封着用ガラスを提
供することを目的とする。The present invention was made in consideration of the above circumstances, and an object of the present invention is to provide a sealing glass that can bond the outer tube of a thermometer and a capillary tube at a low temperature, and does not cause cracks to occur at the bonded portion. shall be.
本発明は上記の目的を達成するために、ｚｎＯ成分を導
入して封着用ガラスの熱膨張係数を低下させ、外管と毛
細管との接合部の残留歪を少なくし、かつ転移点および
降伏点の温度をおさえることにより、６２０℃での封着
を可能にしたものである。すなわち、重量百分率でＰｂ
Ｏ６０〜７５％Ｂ２０．５〜２０％、 Ｚｎ０６〜１５
％Ｉ ８１０２２Ｐ−／８％、んらｏ、 ２〜８％を含
有してなり、熱膨張係数が７５±３Ｘ１０／ｌｌ：なる
封着用ガラスである。In order to achieve the above objects, the present invention introduces a znO component to lower the thermal expansion coefficient of the sealing glass, reduce the residual strain at the joint between the outer tube and the capillary tube, and reduce the transition point and yield point. By suppressing the temperature, it is possible to seal at 620°C. That is, Pb in weight percentage
O60-75% B20.5-20%, Zn06-15
%I81022P-/8%, NRAO, 2 to 8%, and has a coefficient of thermal expansion of 75±3X10/1.
本発明のガラス組成を前記範囲に限定した理由を説明す
る。The reason why the glass composition of the present invention is limited to the above range will be explained.
ＰｂＯは７５％を超えると熱膨張係数が過大となシ、６
０％未満では封着温度が高くなシガラス外管に変形を生
じる。If PbO exceeds 75%, the thermal expansion coefficient becomes excessive.
If it is less than 0%, the sealing temperature is high and the glass outer tube is deformed.
Ｂ、 Ｏ，は２０％を超えると熱膨張係数が小さくなシ
、５％未満ではガラスの溶融性がわるくなる。If B, O, exceeds 20%, the coefficient of thermal expansion will be small, and if it is less than 5%, the meltability of the glass will deteriorate.
ＺｎＯは熱膨張率を下げ、転移点・降伏点などの温度特
性をｍＭｉするために添加されるが、１５％を超えると
失透を生じ、６９＆未満では所要の効果が得られない。ZnO is added to lower the coefficient of thermal expansion and improve temperature characteristics such as transition point and yield point to mmi, but if it exceeds 15%, devitrification occurs, and if it is less than 69%, the desired effect cannot be obtained.
８１０、およびんら０は化学的耐久性を向上させるため
に導入するが、それぞれ８％を超えると封着温度が必要
以上に高くなシ、２弾未満では効果が認められ々い。810 and 0 are introduced to improve chemical durability, but if each exceeds 8%, the sealing temperature will be unnecessarily high, and if it is less than 2%, the effect will not be recognized.
上記の封着用ガラスは、体温計の外管と毛細管との接合
に使用すると、低温にて外管を変形することなく両管を
接合することができ、かつ接合部の残留歪が少ないので
クラックの発生を防止することができる。When the above-mentioned sealing glass is used to join the outer tube and capillary tube of a thermometer, it is possible to join the two tubes at low temperatures without deforming the outer tube, and there is little residual strain at the joint, so there is no cracking. Occurrence can be prevented.
本発明の実施例を次表に示す。表中、ガラス組成は重量
百分率で示す◇
表のガラスは、いずれも所定の酸化物組成が得られるよ
うに原料を調合し、白金るつｔ！を用いて１２５０〜１
３５０℃の温度で溶融しガラス化した後、これを粉砕し
０．４〜Ｑ、 ５ Ｉｌｌの粒度に篩分した。次に、体
温計の外管とこれに挿入され丸亀細管との接触部空間に
上記の粒状ガラスを充填し、温度６２０℃で１０分間加
熱溶融すると、外管と毛細管とが接合される。この接合
部を切断して、歪計によシ残留歪量を測定した。Examples of the present invention are shown in the following table. In the table, the glass composition is shown in weight percentage ◇ All the glasses in the table are prepared by mixing raw materials to obtain a predetermined oxide composition, and are made with platinum melt! 1250~1 using
After melting and vitrification at a temperature of 350° C., it was crushed and sieved to a particle size of 0.4 to Q.5 Ill. Next, the space between the outer tube of the thermometer and the Marugame capillary inserted therein is filled with the above granular glass, and the granular glass is heated and melted at a temperature of 620° C. for 10 minutes, thereby joining the outer tube and the capillary. This joint was cut and the amount of residual strain was measured using a strain meter.
以上のように本発明は、従来ガラスにＺｎＯを適量含有
させ、熱膨張係数を７５±３ Ｘ １０”／ｃに限定し
た封着用ガラスであシ、エナ１６１ガラスからなる体温
計の外管と毛細管との接合に適し両管の接合部の残留歪
が少ないので、タラツクの発生を減少させる利点がある
。As described above, the present invention provides an outer tube and a capillary tube of a thermometer made of Ena 161 glass, which is a conventional sealing glass containing an appropriate amount of ZnO and having a coefficient of thermal expansion limited to 75±3 x 10''/c. Since there is little residual strain at the joint between the two pipes, it has the advantage of reducing the occurrence of tack.
Claims (1)
２０％、ＺｎＯ６〜１５％、ＳｉＯ＿２２〜８％、Ａｌ
＿２Ｏ＿３２〜８％を含有してなり、熱膨張係数が７５
±３×１０＾−＾７／℃であることを特徴とする封着用
ガラス。In weight percentage, PbO60~75%, B_2O_35~
20%, ZnO6-15%, SiO_22-8%, Al
It contains 32 to 8% of _2O_ and has a coefficient of thermal expansion of 75.
A sealing glass characterized by a temperature of ±3×10^-^7/°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034708A JP2641127B2 (en) | 1988-02-17 | 1988-02-17 | Sealing glass for thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63034708A JP2641127B2 (en) | 1988-02-17 | 1988-02-17 | Sealing glass for thermometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01212251A true JPH01212251A (en) | 1989-08-25 |
| JP2641127B2 JP2641127B2 (en) | 1997-08-13 |
Family
ID=12421849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63034708A Expired - Lifetime JP2641127B2 (en) | 1988-02-17 | 1988-02-17 | Sealing glass for thermometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2641127B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133312A (en) * | 1975-05-16 | 1976-11-19 | Nippon Kokuen Kogyo Kk | Composite for forming electrooconductive coat on counting indicator tube |
| JPS52108414A (en) * | 1976-03-08 | 1977-09-10 | Tokyo Shibaura Electric Co | Sealing glass |
-
1988
- 1988-02-17 JP JP63034708A patent/JP2641127B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51133312A (en) * | 1975-05-16 | 1976-11-19 | Nippon Kokuen Kogyo Kk | Composite for forming electrooconductive coat on counting indicator tube |
| JPS52108414A (en) * | 1976-03-08 | 1977-09-10 | Tokyo Shibaura Electric Co | Sealing glass |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2641127B2 (en) | 1997-08-13 |
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