JPS63107828A - Method for forming glass tube - Google Patents
Method for forming glass tubeInfo
- Publication number
- JPS63107828A JPS63107828A JP25240886A JP25240886A JPS63107828A JP S63107828 A JPS63107828 A JP S63107828A JP 25240886 A JP25240886 A JP 25240886A JP 25240886 A JP25240886 A JP 25240886A JP S63107828 A JPS63107828 A JP S63107828A
- Authority
- JP
- Japan
- Prior art keywords
- glass tube
- glass
- tubes
- shaped
- communicating hole
- 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 76
- 238000000034 method Methods 0.000 title claims description 18
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 210000002414 leg Anatomy 0.000 description 10
- 235000013372 meat Nutrition 0.000 description 9
- 238000000465 moulding Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/13—Reshaping combined with uniting or heat sealing, e.g. for making vacuum bottles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/09—Reshaping the ends, e.g. as grooves, threads or mouths
- C03B23/092—Reshaping the ends, e.g. as grooves, threads or mouths by pressing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
- C03B23/213—Joining projections or feet
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/26—Punching reheated glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用公費〕
この発明は、ガラス管の成形方法に関するもので、詳細
にはＵ字状に屈曲した放電路を有する放電ランプのバル
ブガラス等を製造するためのガラス管の成形方法に関す
る。[Detailed Description of the Invention] [Public Expenses for Industrial Use] This invention relates to a method for forming a glass tube, and more specifically, to a method for manufacturing a bulb glass for a discharge lamp having a discharge path bent in a U-shape. This invention relates to a method for forming glass tubes.
この発明の出願人は特開昭６０−５４９３３号公報で開
示したように、２本の直線状ガラス管を直接接合し、曲
げ加工せずにＵ字状に成形されたガラス管を得ることの
できるガラス管の成形方法を提案している。以下第５図
ないし第１２図に従い上記ガラス管の成形方法を説明す
る。As disclosed in Japanese Patent Application Laid-Open No. 60-54933, the applicant of the present invention has proposed a technique for directly joining two straight glass tubes to obtain a U-shaped glass tube without bending. We are proposing a method for forming glass tubes. The method for forming the glass tube will be explained below with reference to FIGS. 5 to 12.
■ まず第５図に示すように、２本の直線状ガラス管＋
１１をそれぞれ、ホルダー（５）で当接態様に把持する
。■ First, as shown in Figure 5, two straight glass tubes +
11 are held in contact with each other by a holder (5).
■ 次に第６図に示すように、把持されている２本のガ
ラス管ｉｌｌのそれぞれの端部よりガスバーナー（６）
を挿入し、バーナー（６）の炎が対向するような状態で
所定の位置に固定する。■ Next, as shown in Figure 6, the gas burner (6) is inserted from each end of the two glass tubes being held.
Insert and fix in place with the flame of burner (6) facing you.
■ 続いて近接している２本のガラス管（１）のそれぞ
れの所定の内面を加熱し、局部的に溶融させろ。この時
溶融した部分は、まずバーナー（６）の風圧で連通孔（
１２）となる孔があき、次にガラスの表面張力の影響で
連通孔（１２）が拡大する方向に引っ張られ、連通孔（
１２）の周縁部に肉溜り（１１）を形成し、この肉溜り
（１１）がバーナー（６）の風圧で外側に押し出される
ため、２本のガラス管（１）はそれぞれの押し出された
肉溜り（１１）同士が溶着し、外部と気密に連通接合さ
れる（第７図はこの接合された状態を示す図である）。■ Next, heat the predetermined inner surfaces of each of the two adjacent glass tubes (1) to locally melt them. At this time, the melted part is first heated through the communication hole (
12) is opened, and then the communicating hole (12) is pulled in the direction of expansion due to the influence of the surface tension of the glass, and the communicating hole (12) is opened.
A meat pocket (11) is formed at the periphery of the pipe (12), and this meat pocket (11) is pushed outward by the wind pressure of the burner (6), so the two glass tubes (1) The reservoirs (11) are welded together and connected to the outside in an airtight manner (FIG. 7 is a diagram showing this joined state).
■ 次に、バーナー（６）を引き抜いてから、第８図に
示すような状態でガラス！ （１）の端部を、他のバー
ナー（８）で加熱する。このようにして加熱するとガラ
ス管（１）の端部は軟化し、ガラスの表面張力の作用で
収縮し、第９図に示すように閉塞された形になる。■ Next, pull out the burner (6) and put it in the state shown in Figure 8! The end of (1) is heated with another burner (8). When heated in this manner, the end of the glass tube (1) softens and contracts due to the surface tension of the glass, forming a closed shape as shown in FIG.
■ 次に第１Ｏ図に示すように、連通接合部および欲化
しているガラス管（１）の端部を覆うように、第１２図
に示すような、内側にＵ字状の溝（９１）を形成した、
成形用の割り型（９）を当てると同時にガラス管（１）
の欲化させていない側の端部にエアーをガラス管（１）
内に送り込み、ガラス管（１）の内部を加圧する。この
操作により、軟化している部分のガラスはふくらんで、
型（９）の溝（９１）内面に密着する。■ Next, as shown in Fig. 1O, a U-shaped groove (91) is formed on the inner side as shown in Fig. 12 so as to cover the communicating joint and the end of the desired glass tube (1). formed,
At the same time as applying the mold for molding (9), the glass tube (1)
Insert air into the glass tube (1) at the end of the non-containing side.
to pressurize the inside of the glass tube (1). This operation causes the softened part of the glass to swell,
It comes into close contact with the inner surface of the groove (91) of the mold (9).
■ こののち、エアーを止め、ガラス管！１１内の圧力
を大気圧にもどして、型（９）をはずして冷却すると第
１１図に示すようなＵ字状に屈曲したガラス管（１）が
完成する。■ After this, turn off the air and use the glass tube! When the pressure inside 11 is returned to atmospheric pressure, the mold (9) is removed and cooled, a U-shaped bent glass tube (1) as shown in FIG. 11 is completed.
このような製造方法によって形成されたＵ字状のガラス
￥？ （１１は、曲げ加工を一切採用していない。その
ため、曲げ加工によって成形されたものに比べ、屈曲部
分の肉厚が薄くなることもなく、強度が低下したり、ま
た肉厚のアンバランスによる成形不良が生じたりするこ
とはなくなる。また、特に図示しないがガラス管成形装
置は、ガラス管巻上機構を必要としないので、極めて簡
素化され、製造が容易となるとともに保守、点検が容易
となる利点もある。U-shaped glass formed by this manufacturing method (No. 11 does not use any bending process. Therefore, compared to products formed by bending process, the wall thickness at the bent part does not become thinner, resulting in a decrease in strength and an unbalanced wall thickness. In addition, although not shown in the drawings, the glass tube forming device does not require a glass tube winding mechanism, making it extremely simple and easy to manufacture, as well as easy to maintain and inspect. There are also some advantages.
しかしながら、上記の方法でＵ字状に成形されたガラス
管は、並設された脚部同士を引き離すような方向に外力
が加わると破壊しやすいという欠点がある。すなわち、
第１３図に示すように、Ｕ字状管の脚部の根元の部分（
内股部分）に肉溜り（ａ）ができやすい。これは成形の
ための型（９）の中央突出部（９２）同士が完全に当接
しているため、ガラス管内が加圧された際、ガラス管の
内がＵ字管の脚部根元部分では肉の「逃げ場」がなく、
塊のまま残存してしまい肉溜り（ａ）となる。そしてこ
の肉溜り（ａ）は、成形時の冷却過程で、肉溜す（ａ）
の部分の冷却速度が他の部分より遅くなるので、成形後
に歪が発生し、割れやすい状態を形成するためである。However, the glass tube formed into a U-shape by the above method has the disadvantage that it is easily broken when an external force is applied in a direction that causes the juxtaposed leg portions to be separated from each other. That is,
As shown in Figure 13, the base of the leg of the U-shaped tube (
Muscle pockets (a) tend to form in the inner thigh area). This is because the central protrusions (92) of the mold (9) for molding are in complete contact with each other, so when the inside of the glass tube is pressurized, the inside of the glass tube does not reach the base of the leg of the U-shaped tube. There is no “escape” for meat,
It remains as a lump and becomes a lump of meat (a). This meat pocket (a) is formed during the cooling process during molding.
This is because the cooling rate of the part is slower than other parts, which causes distortion after molding and creates a state where it is easy to break.
また、型（９）は分割面が３箇所で当接しているため、
特に中央突出部（９２）にガラスの破片等の異物が付着
すると、他の２箇所の合わせ面に隙間が生じて、ガラス
管表面にすし状の突出部が形成され、外観的に不体裁な
ものにする問題点があった。In addition, since the mold (9) has the dividing surfaces in contact at three places,
In particular, if foreign matter such as glass fragments adheres to the central protrusion (92), a gap will be created between the other two mating surfaces, and a slit-shaped protrusion will be formed on the glass tube surface, resulting in an unsightly appearance. There were some problems in making it work.
この発明は、上記のような問題点を解消するためになさ
れたもので、脚部根元の強度が充分に強いＵ字状ガラス
管を容易に製造でき、（７かも型の合わせ部に形成され
やすいすし状突出部の発生を軽減したガラス管の成形方
法を提供することを目的とするものである。This invention was made in order to solve the above-mentioned problems, and it is possible to easily manufacture a U-shaped glass tube with sufficient strength at the base of the legs. It is an object of the present invention to provide a method for forming a glass tube in which the occurrence of easy sled-like protrusions is reduced.
この発明のガラス管の成形方法は、並設した２本のガラ
ス管のそれぞれの所定の箇所にバーナー炎を当て開孔す
るとともに、この開口部の周縁に押し出されたガラス管
の肉でガラス管同士を直接接合し、次いで接合部周辺を
加熱砿化させた後、この部分をＵ字状の凹部が形成され
ている型に入れＵ字状ガラス管を成形するに際し、上記
成形のための型として、２本のガラス管の中心を通る平
面に沿って２分割されており、かつ中央部の突出部を全
長に亘り隙間をもって互いに離換対向させたものとした
ことを特徴とするものである。The glass tube forming method of this invention involves applying a burner flame to a predetermined location of each of two glass tubes arranged side by side to make a hole, and then using the flesh of the glass tube pushed out to the periphery of the opening to form a glass tube. After directly joining them together and then heating and turning the periphery of the joint, this part is placed in a mold with a U-shaped recess to form a U-shaped glass tube. The glass tube is divided into two parts along a plane passing through the center of the two glass tubes, and the protruding parts of the central part are separated from each other and face each other with a gap over the entire length. .
この発明においては、Ｕ字状ガラス管の脚部の間に入り
込む成形用の型の中央突出部の間に隙間が全長に亘り形
成されているので、軟化したガラス管を型に入れて、ガ
ラス管内の圧力を高めて成形する時、軟化された脚部の
根元の部分が何の抵抗を受けることなく、隙間に押し出
され、他の部分より拡径される。このため、脚部の根元
部分の肉は、脚部の軸方向に引っ張られて薄くなり、肉
温りは形成されない。In this invention, a gap is formed along the entire length between the central protrusions of the mold for molding, which is inserted between the legs of the U-shaped glass tube. When molding is performed by increasing the pressure inside the tube, the softened root portion of the leg is pushed out into the gap without any resistance and is expanded in diameter compared to the other portions. Therefore, the meat at the base of the leg is pulled in the axial direction of the leg and becomes thinner, so that no meat warmth is formed.
以下、この発明の一実施例を図を参考にして説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図は型の分解斜視図であり、第２図はそのＡ−Ａ断
面図である。これら図において、（９）は成形用の型で
あり、金属材料製の直方体状を呈しており、一端が一端
面に開口し、かつ互いに軸線を平行にした２個の円筒状
筒部（９１ｍ）と、これら筒部（９１ｍ）の他端を内部
で連結する連結部（９１ｂ）とで構成されるＵ字状の凹
部（９１）を設けている。また、この型（９）は互いの
筒部（９１ａ）の中心、換言すればその筒部（９１ａ）
内に収納されるガラス管（１）の中心を通る平面に沿っ
て２分割されている。さらにＵ字状凹部（旧）の筒部（
９１ａ）間に位置する中央突出部（９２）はその分割面
を境にして全長に亘り若干後退して設けられており、分
割面で合わせた時には、中央突出部（９２）の先端間に
は全長に亘り隙間（９３）が形成されるようになってい
る。FIG. 1 is an exploded perspective view of the mold, and FIG. 2 is a sectional view taken along line AA. In these figures, (9) is a mold for molding, which has a rectangular parallelepiped shape made of metal material, and has two cylindrical parts (91 m ) and a connecting portion (91b) that internally connects the other ends of these cylindrical portions (91m). Moreover, this mold (9) is the center of each cylinder part (91a), in other words, the cylinder part (91a)
It is divided into two parts along a plane passing through the center of the glass tube (1) housed inside. In addition, the cylindrical part of the U-shaped recess (old) (
The central protruding part (92) located between 91a) is slightly set back over the entire length with the dividing plane as a boundary, and when the dividing plane is aligned, there is a gap between the tips of the central protruding part (92). A gap (93) is formed over the entire length.
そうして、上記の型（９）を使用し、上述した従来の成
形方法に従いガラス管（１）をＵ字状ガラス管に成形す
ることにより、第３図および第４図に示すＵ字状ガラス
管が形成される。すなわち、Ｕ字状ガラス管の「内股」
となる箇所に形成されていた肉温り（ａ）は型（９）の
隙間（９３）に沿って押し出され膨出部（１ａ）を形成
する。この膨出部（１ａ）は隙間（９３）が外気に対し
、貫通しているため、何の支障なく膨出するから、周囲
のガラス管（１）の肉を充分に引き伸ばｊ７、全体を均
一な肉厚にする。また、中央突出部（９２）間には隙間
（９３）があるので型（９）は「２点」で当接すること
になり異物がはさまれることによって生ずるずじ状突出
部がガラス管表示面に形成されることは大幅に減少する
。The glass tube (1) is then molded into a U-shaped glass tube using the mold (9) and according to the conventional molding method described above. A glass tube is formed. In other words, the “inner thigh” of the U-shaped glass tube
The meat warmth (a) formed at the location is pushed out along the gap (93) of the mold (9) and forms a bulge (1a). Since this bulging part (1a) has a gap (93) penetrating the outside air, it bulges out without any problem, so if the surrounding glass tube (1) is fully stretched, the whole to a uniform thickness. In addition, since there is a gap (93) between the central protrusions (92), the mold (9) comes into contact at "two points", and the ridge-like protrusion caused by the pinching of foreign objects is displayed on the glass tube. Formation on surfaces is significantly reduced.
次に具体的実施例について説明する。Next, specific examples will be described.
外径１６Ｉｌ１１１肉厚０．８■、長さ１２０１１！ｌ
の直線状したソーダライムガラス製のガラス管（１）を
２本用意し、これを従来の成形方法により順次進めてい
き、■の工程で用いる型（９）には筒部（９１ａ）径１
６、５ｓｕ＋、隙間（９３）の間隔が１．６ｍｍを使用
し、以後従来と同様な条件で成形を完了させた。この方
法により製造方法した１０００個のＵ字状ガラス管の肉
温りおよびすし状突出部の発生状況について調べた結果
、強度低下を招くような、肉温ゆが形成されていたもの
１個、またすし状突出部は外観体裁を損なうような大き
さのものを０個であり、著しい改善効果が確認できた。Outer diameter 16Il111, wall thickness 0.8■, length 12011! l
Two straight glass tubes (1) made of soda lime glass are prepared, and they are successively molded using the conventional method.
6,5su+, and the gap (93) was 1.6 mm, and the molding was then completed under the same conditions as before. As a result of investigating the flesh temperature and occurrence of sushi-shaped protrusions in 1,000 U-shaped glass tubes manufactured using this method, one tube had warped flesh that caused a decrease in strength. In addition, there were no sled-like protrusions that were large enough to impair the appearance, confirming a significant improvement effect.
なお、上記実施例では、中央突出部（９２）の間隔を、
使用したガラス管（１）の肉厚の２倍である１、６ｍｍ
としたが、概ね肉厚の１．０倍から４．０倍程度であれ
ば、はぼ同等の効果が期待できる。In addition, in the above embodiment, the interval between the central protrusions (92) is
1.6 mm, which is twice the wall thickness of the glass tube (1) used.
However, if the thickness is approximately 1.0 to 4.0 times the wall thickness, approximately the same effect can be expected.
以上説明したように、この発明の方法は、並設した２本
のガラス管を連通させて接合し、接合部分を加熱軟化さ
せてからＵ字状の凹部を持った型に入れて成形し、Ｕ字
状ガラス管を成形するに際し、使用する型を、２個のガ
ラス管の中心を通る平面に沿って２分割し、しかも中央
部は全長に亘り分割面を境に後退し、中央突出部間に隙
間を形成したものとしたので、製造されたＵ字状ガラス
管は、その脚部の根元の肉温りの発生を防止でき、ガラ
ス管の強度を向上させるとともに、ガラス管表面の型の
合わせ面となる箇所に生ずるすし状突出部の発生もａ減
できる効果を奏する。As explained above, the method of the present invention connects two glass tubes arranged in parallel by communicating with each other, heats and softens the joined part, and then places it in a mold having a U-shaped recess and molds it. When forming a U-shaped glass tube, the mold used is divided into two parts along a plane passing through the centers of the two glass tubes, and the central part recedes along the entire length of the divided plane, forming a central protruding part. Since a gap is formed between the legs, the manufactured U-shaped glass tube can prevent the flesh from heating up at the base of the leg, improve the strength of the glass tube, and improve the shape of the glass tube surface. This has the effect of reducing the occurrence of slit-shaped protrusions that occur at the mating surfaces.
第１図はこの発明に用いる型の分解斜視図、第２図はそ
のＡ−Ａ断面図、第３図はこの発明によって成形された
Ｕ字状ガラス管を示す一部切欠断面図、第４図は第３図
のＢ−Ｂ断面図、第５図ないし第１１図は従来の方法を
説明するための工程図、第１２図は従来の型を示す分解
斜視図、第１３図はＵ字状ガラス管の肉温りを示す断面
図である。
図中、（１）はガラス管、（６）はバーナー、（９）は
型、（９２）は中央突出部、（９３）は隙間である。
なお、各図中同一符号は同一または相当部分を示す。FIG. 1 is an exploded perspective view of a mold used in this invention, FIG. 2 is a sectional view taken along line A-A, FIG. 3 is a partially cutaway sectional view showing a U-shaped glass tube molded according to this invention, and FIG. The figure is a sectional view taken along line B-B in Figure 3, Figures 5 to 11 are process diagrams for explaining the conventional method, Figure 12 is an exploded perspective view showing a conventional mold, and Figure 13 is a U-shaped It is a sectional view showing the meat temperature of a shaped glass tube. In the figure, (1) is a glass tube, (6) is a burner, (9) is a mold, (92) is a central protrusion, and (93) is a gap. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
いでガラス管の端部近傍の連通孔開孔予定箇所にガラス
管内側よりバーナー炎をあて、上記開孔予定箇所を溶融
しながらバーナーの風圧により開孔し連通孔を形成する
とともに、この連通孔の外側周縁にガラス管の肉を押し
出し、この肉により相互の連通孔周縁を接合させ、続い
て連通孔側のガラス管開放端を加熱収縮させて溶着し、
この後この溶着部をＵ字状の凹部が形成されている型に
入れ、ガラス管内の気体圧力を高めてＵ字状ガラス管に
成形するガラス管の成形方法において、上記型は収納し
た２本のガラス管の中心を通る平面に沿って２分割され
ており、かつ各々の分割された型の中央部の突出部は、
その全長に亘り隙間が形成されるように互いに離間対向
していることを特徴とするガラス管の成形方法。Two glass tubes are placed side by side so that their axes are parallel, and then a burner flame is applied from the inside of the glass tube to the area near the end of the glass tube where the communicating hole is planned to be formed, thereby melting the area where the communicating hole is planned to be formed. At the same time, the hole is opened by the wind pressure of the burner to form a communicating hole, and the flesh of the glass tube is pushed out to the outer periphery of this communicating hole, and this flesh joins the periphery of each communicating hole, and then the glass tube on the side of the communicating hole is opened. Heat shrink the ends and weld them together.
Thereafter, this welded part is placed in a mold having a U-shaped recess, and the gas pressure inside the glass tube is increased to form a U-shaped glass tube. The glass tube is divided into two along the plane passing through the center, and the protrusion in the center of each divided mold is
A method for forming glass tubes, characterized in that the glass tubes are spaced apart from each other and face each other so that a gap is formed over the entire length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25240886A JPS63107828A (en) | 1986-10-23 | 1986-10-23 | Method for forming glass tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25240886A JPS63107828A (en) | 1986-10-23 | 1986-10-23 | Method for forming glass tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63107828A true JPS63107828A (en) | 1988-05-12 |
Family
ID=17236927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25240886A Pending JPS63107828A (en) | 1986-10-23 | 1986-10-23 | Method for forming glass tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63107828A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009508789A (en) * | 2005-09-20 | 2009-03-05 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | Welding method for joining components made of high silica material and apparatus for carrying out the method |
-
1986
- 1986-10-23 JP JP25240886A patent/JPS63107828A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009508789A (en) * | 2005-09-20 | 2009-03-05 | ヘレウス クワルツグラス ゲーエムベーハー ウント コンパニー カーゲー | Welding method for joining components made of high silica material and apparatus for carrying out the method |
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