JP6699682B2 - Method for manufacturing glass joined body - Google Patents

Method for manufacturing glass joined body Download PDF

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JP6699682B2
JP6699682B2 JP2018043777A JP2018043777A JP6699682B2 JP 6699682 B2 JP6699682 B2 JP 6699682B2 JP 2018043777 A JP2018043777 A JP 2018043777A JP 2018043777 A JP2018043777 A JP 2018043777A JP 6699682 B2 JP6699682 B2 JP 6699682B2
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glass material
glass
joined body
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contact portion
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JP2018115109A (en
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和田　正紀
正紀 和田
小谷　修
修 小谷
政幸 池本
政幸 池本
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Nippon Electric Glass Co Ltd
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Description

本発明は、ガラス接合体の製造方法に関する。   The present invention relates to a method for manufacturing a glass joined body.

従来、例えば、複数のガラス材を接合し、ガラス接合体を作製することが成されている。ガラス材の接合方法としては、例えば、レーザー光を照射することにより複数のガラス材を溶接する方法が知られている（例えば、特許文献１等を参照）。   Conventionally, for example, a plurality of glass materials are joined together to produce a glass joined body. As a method of joining glass materials, for example, a method of welding a plurality of glass materials by irradiating laser light is known (see, for example, Patent Document 1).

特開２００８−２３９４３０号公報JP, 2008-239430, A

例えば、第１のガラス材と、第２のガラス材とを垂直に溶接したいという要望がある。具体的には、例えば、筒状の第１のガラス材の長さ方向における一方側端部に、円板状の第２のガラス材を溶接し、有底円筒管状の容器を作製したいという要望がある。   For example, there is a desire to vertically weld a first glass material and a second glass material. Specifically, for example, a desire to weld a disk-shaped second glass material to one end portion in the length direction of a cylindrical first glass material to manufacture a bottomed cylindrical tubular container. There is.

しかしながら、第１のガラス材と、第２のガラス材とを垂直に溶接した場合、溶接部の厚みが薄くなるため、強度が低くなりやすい。すなわち、高強度なガラス接合体が得られ難い。   However, when the first glass material and the second glass material are vertically welded, the strength of the welded portion tends to be low because the thickness of the welded portion becomes thin. That is, it is difficult to obtain a high-strength glass joined body.

本発明の主な目的は、高強度なガラス接合体を製造する方法を提供することにある。   A main object of the present invention is to provide a method for producing a high-strength glass joined body.

本発明に係るガラス接合体の製造方法は、第１のガラス材の端面に第２のガラス材が接合されてなるガラス接合体の製造方法であって、第２のガラス材の端部が、第１のガラス材と第２のガラス材との当接部よりも外側に至るように、第１のガラス材の端面と第２のガラス材の主面を当接させる工程と、当接部の外側端部よりも内側にレーザー光を第２のガラス材に対して照射することにより第２のガラス材の端部を融解させて第１のガラス材と第２のガラス材とを溶接する工程と、を含む。この方法では、第１の部分と第２の部分との接合部の肉厚を大きくでき、接合部の強度を向上することができる。従って、高強度なガラス接合体を製造することができる。   A method for manufacturing a glass joined body according to the present invention is a method for manufacturing a glass joined body in which a second glass material is joined to an end surface of a first glass material, wherein an end portion of the second glass material is A step of bringing the end surface of the first glass material into contact with the main surface of the second glass material so as to reach the outside of the contact portion between the first glass material and the second glass material; Of the second glass material by irradiating the second glass material with laser light inside the outer edge of the first glass material to weld the first glass material and the second glass material. And a process. With this method, the thickness of the joint between the first portion and the second portion can be increased, and the strength of the joint can be improved. Therefore, a high-strength glass joined body can be manufactured.

本発明に係るガラス接合体の製造方法では、当接部よりも外側に位置する部分が融解するまでレーザー光を照射することが好ましい。そうすることにより、確実に第１の部分と第２の部分との接合部の肉厚を大きくできるため、接合部の強度をさらに向上することができる。   In the method for manufacturing a glass joined body according to the present invention, it is preferable to irradiate the laser beam until the portion located outside the contact portion is melted. By doing so, the thickness of the joint between the first portion and the second portion can be surely increased, so that the strength of the joint can be further improved.

本発明に係るガラス接合体の製造方法では、当接部における第１のガラス材の厚みをｔ１とし、当接部における第２のガラス材の厚みをｔ２とし、溶接前において、当接部よりも外側に位置している部分の第２のガラス材の厚み方向における断面積をＳとしたときに、Ｓ≦ｔ１×ｔ２となるように、第１のガラス材と第２のガラス材とを当接させてレーザー光を照射することが好ましい。このようにすることにより、レーザー溶接により、第２のガラス材の当接部よりも外側に位置している部分を確実に消失させることができる。 In the method for manufacturing a glass joined body according to the present invention, the thickness of the first glass material at the contact portion is t 1 , the thickness of the second glass material at the contact portion is t 2, and before the welding, the cross-sectional area in the thickness direction of the second glass material of the portion is positioned outward from the parts when the S, such that S ≦ t 1 × t 2, the first glass member and the second It is preferable to irradiate with a laser beam by bringing it into contact with a glass material. By doing so, it is possible to reliably eliminate the portion of the second glass material, which is located outside the contact portion, by laser welding.

本発明に係るガラス接合体の製造方法では、当接部における第１のガラス材の厚みをｔ１とし、溶接前において、当接部よりも外側に位置している部分の長さをＬとしたときに、Ｌ≦ｔ１となるように第１のガラス材と第２のガラス材とを当接させてレーザー光を照射することが好ましい。そうすることにより、レーザー溶接により、第２のガラス材の当接部よりも外側に位置している部分を確実に消失させることができる。 In the method for manufacturing a glass joined body according to the present invention, the thickness of the first glass material at the contact portion is t 1, and the length of the portion located outside the contact portion before welding is L. At this time, it is preferable that the first glass material and the second glass material are brought into contact with each other so that L≦t 1 and laser light is irradiated. By doing so, it is possible to reliably eliminate the portion of the second glass material, which is located outside the contact portion, by laser welding.

本発明に係るガラス接合体の製造方法では、第２のガラス材の主面に対して垂直な方向から視たときに、レーザー光の第２のガラス材の主面におけるスポットの中心が、第１のガラス材の厚み方向において、当接部の中心よりも内側に位置するようにレーザー光を第２のガラス材に照射することが好ましい。そうすることにより、接合部をより厚肉にすることができるため、接合部の強度をさらに向上することができる。   In the method for manufacturing a glass joined body according to the present invention, when viewed from a direction perpendicular to the main surface of the second glass material, the center of the spot of the laser light on the main surface of the second glass material is In the thickness direction of the first glass material, it is preferable to irradiate the second glass material with laser light so as to be located inside the center of the contact portion. By doing so, the joint portion can be made thicker, so that the strength of the joint portion can be further improved.

本発明に係るガラス接合体の製造方法では、第２のガラス材の主面に対して垂直な方向から視たときに、レーザー光の第２のガラス材の主面におけるスポットが、第１のガラス材の厚み方向において、当接部の内側端部よりも内側にまで至っていることが好ましい。そうすることにより、接合部をより厚肉にすることができ、接合部の強度をさらに向上することができる。   In the method for manufacturing a glass joined body according to the present invention, when viewed from a direction perpendicular to the main surface of the second glass material, the spot of the laser light on the main surface of the second glass material is the first In the thickness direction of the glass material, it is preferable that the abutting portion extends further inside than the inner end portion. By doing so, the joint portion can be made thicker and the strength of the joint portion can be further improved.

本発明に係るガラス接合体の製造方法では、第１及び第２のガラス材を歪点以上の温度にまで加熱した状態で、第１のガラス材と第２のガラス材との溶接を行うことが好ましい。そうすることにより、レーザー溶接時に第１及び第２のガラス材が破損することを抑制することができる。   In the method for manufacturing a glass joined body according to the present invention, the first glass material and the second glass material are welded while the first and second glass materials are heated to a temperature equal to or higher than the strain point. Is preferred. By doing so, it is possible to suppress damage to the first and second glass materials during laser welding.

本発明に係るガラス接合体は、円筒状の第１のガラス材と、第１のガラス材の長さ方向における一方側端部を塞ぐように第１のガラス材にレーザー溶接された円板状の第２のガラス材とを備える。本発明に係るガラス接合体では、第１のガラス材と第２のガラス材との接合部の強度が高い。   The glass joined body according to the present invention is a cylindrical first glass material and a disk shape laser-welded to the first glass material so as to close one end portion in the length direction of the first glass material. And a second glass material. In the glass joined body according to the present invention, the strength of the joined portion between the first glass material and the second glass material is high.

本発明に係るガラス接合体は、第１のガラス材と第２のガラス材との接合部が内側に向かって突出していることが好ましい。この場合、接合部の強度をより高くすることができる。   In the glass joined body according to the present invention, it is preferable that a joint portion between the first glass material and the second glass material projects inward. In this case, the strength of the joint can be increased.

本発明によれば、高強度なガラス接合体を製造する方法を提供することができる。   According to the present invention, it is possible to provide a method for producing a high-strength glass joined body.

本発明の一実施形態におけるガラス接合体の製造工程を説明するための模式的斜視図である。It is a typical perspective view for explaining the manufacturing process of the glass zygote in one embodiment of the present invention. 図１の線ＩＩ−ＩＩにおける模式的断面図である。FIG. 2 is a schematic cross-sectional view taken along line II-II of FIG. 1. 図２のＩＩＩ部分の拡大模式的断面図である。FIG. 3 is an enlarged schematic cross-sectional view of a portion III in FIG. 2. 図２のＩＩＩ部分の拡大模式的平面図である。It is an expansion schematic plan view of the III section of FIG. 本発明の一実施形態において製造されたガラス接合体の模式的断面図である。It is a typical sectional view of the glass zygote manufactured in one embodiment of the present invention. 図５のＶＩ部分の拡大模式的断面図である。FIG. 6 is an enlarged schematic sectional view of a VI portion of FIG. 5.

以下、本発明を実施した好ましい形態の一例について説明する。但し、下記の実施形態は、単なる例示である。本発明は、下記の実施形態に何ら限定されない。   Hereinafter, an example of a preferable mode for carrying out the present invention will be described. However, the following embodiments are merely examples. The present invention is not limited to the embodiments described below.

また、実施形態等において参照する各図面において、実質的に同一の機能を有する部材は同一の符号で参照することとする。また、実施形態等において参照する図面は、模式的に記載されたものである。図面に描画された物体の寸法の比率などは、現実の物体の寸法の比率などとは異なる場合がある。図面相互間においても、物体の寸法比率等が異なる場合がある。具体的な物体の寸法比率等は、以下の説明を参酌して判断されるべきである。   In each drawing referred to in the embodiments and the like, members having substantially the same function are referred to by the same reference numeral. Further, the drawings referred to in the embodiments and the like are schematically described. The dimensional ratio of the object drawn in the drawing may be different from the dimensional ratio of the actual object. The dimensional ratio of objects may be different between the drawings. Specific dimensional ratios of objects should be determined in consideration of the following description.

図１は、本実施形態におけるガラス接合体の製造工程を説明するための模式的斜視図である。図２は、図１の線ＩＩ−ＩＩにおける模式的断面図である。図３は、図２のＩＩＩ部分の拡大模式的断面図である。図４は、図２のＩＩＩ部分の拡大模式的平面図である。図５は、本実施形態において製造されたガラス接合体の模式的断面図である。図６は、図５のＶＩ部分の拡大模式的断面図である。   FIG. 1 is a schematic perspective view for explaining the manufacturing process of the glass joined body in the present embodiment. FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. FIG. 3 is an enlarged schematic sectional view of a portion III in FIG. FIG. 4 is an enlarged schematic plan view of a portion III in FIG. FIG. 5 is a schematic cross-sectional view of the glass joined body manufactured in this embodiment. FIG. 6 is an enlarged schematic sectional view of a VI portion of FIG.

まず、図１〜図４を参照しながら、図５及び図６に示すガラス接合体１の製造方法について説明する。   First, a method for manufacturing the glass bonded body 1 shown in FIGS. 5 and 6 will be described with reference to FIGS.

図５に示すガラス接合体１は、図１及び図２に示すように、第１のガラス材１０と、第２のガラス材２０とを有する。第１及び第２のガラス材１０，２０の形状及び寸法は、特に限定されない。第１及び第２のガラス材１０，２０は、それぞれ、平板状、曲板状、屈曲板状、円筒状等であってもよい。本実施形態では、第１のガラス材１０は、円筒状である。第２のガラス材２０は、円板状である。   The glass joined body 1 shown in FIG. 5 has a first glass material 10 and a second glass material 20, as shown in FIGS. 1 and 2. The shapes and dimensions of the first and second glass materials 10 and 20 are not particularly limited. The first and second glass materials 10 and 20 may each have a flat plate shape, a curved plate shape, a bent plate shape, a cylindrical shape, or the like. In the present embodiment, the first glass material 10 has a cylindrical shape. The second glass material 20 has a disk shape.

図３に示すように、第２のガラス材２０の端部２０ａにおいて、第１のガラス材１０の端面１０ａと、第２のガラス材２０の主面２０ｂとを当接させる。具体的には、第２のガラス材２０の端部２０ａが、第１のガラス材１０と第２のガラス材２０との当接部１０ｂ、２０ｄよりも、半径方向の外側に至るように、第１のガラス材１０の端面１０ａと第２のガラス材２０の端部２０ａにおける主面２０ｂとを当接させる。   As shown in FIG. 3, at the end portion 20a of the second glass material 20, the end surface 10a of the first glass material 10 and the main surface 20b of the second glass material 20 are brought into contact with each other. Specifically, the end portion 20a of the second glass material 20 reaches the outer side in the radial direction from the contact portions 10b and 20d between the first glass material 10 and the second glass material 20, The end surface 10a of the first glass material 10 and the main surface 20b of the end portion 20a of the second glass material 20 are brought into contact with each other.

本実施形態では、具体的には、第２のガラス材２０の直径は、第１のガラス材１０の直径よりも大きい。これら第２のガラス材２０と第１のガラス材１０とを、中心が一致するように配し、第１のガラス材１０の端面１０ａと、第２のガラス材２０の端部２０ａにおける主面２０ｂとを当接させる。このため、第２のガラス材２０の端部２０ａが、第１のガラス材１０の当接部１０ｂよりも半径方向の外側にまで至る。   In the present embodiment, specifically, the diameter of the second glass material 20 is larger than the diameter of the first glass material 10. The second glass material 20 and the first glass material 10 are arranged so that their centers coincide with each other, and the end surface 10a of the first glass material 10 and the main surface of the end portion 20a of the second glass material 20 are arranged. 20b and abut. Therefore, the end portion 20a of the second glass material 20 reaches the outer side in the radial direction of the contact portion 10b of the first glass material 10.

上述のように、第１のガラス材１０の端面１０ａと第２のガラス材２０の主面２０ｂとを当接させた状態で、第２のガラス材２０の上方から他方側の主面２０ｃにレーザー光ＬＢを照射する。具体的には、図４に示すように、当接部１０ｂ、２０ｄの外側端部１０ｂ１よりも内側にレーザー光ＬＢを照射する。これにより、第２のガラス材２０の端部２０ａを融解させて第１のガラス材１０と第２のガラス材２０とを溶接する。本実施形態では、第２のガラス材２０の端部２０ａのうち、第１のガラス材１０と当接している部分２０ｄ、１０ｂよりも外側に位置する外側部分２０ｅが融解するまで、第２のガラス材２０にレーザー光ＬＢを照射する。その結果、図５に示す、ガラス接合体１を得る。   As described above, in a state where the end surface 10a of the first glass material 10 and the main surface 20b of the second glass material 20 are in contact with each other, from the upper side of the second glass material 20 to the other main surface 20c. The laser beam LB is irradiated. Specifically, as shown in FIG. 4, the laser light LB is applied to the inside of the outer end portion 10b1 of the contact portions 10b and 20d. As a result, the end portion 20a of the second glass material 20 is melted and the first glass material 10 and the second glass material 20 are welded. In the present embodiment, of the end portion 20a of the second glass material 20, the second portion until the outer portion 20e located outside the portions 20d and 10b in contact with the first glass material 10 melts. The glass material 20 is irradiated with the laser beam LB. As a result, the glass bonded body 1 shown in FIG. 5 is obtained.

なお、レーザー光ＬＢの照射による第１のガラス材１０と第２のガラス材２０との溶接は、第１及び第２のガラス材１０，２０を、第１及び第２のガラス材１０，２０の歪点以上にまで加熱した状態で行うことが好ましく、歪点＋５℃〜歪点＋１００℃の温度範囲で行うことがより好ましい。このようにすることで、溶接の際に、第１及び第２のガラス材１０，２０が破損することを抑制することができる。   The welding of the first glass material 10 and the second glass material 20 by irradiation with the laser beam LB is performed by welding the first and second glass materials 10, 20 to the first and second glass materials 10, 20. It is preferable that the heating is performed up to the strain point or higher, and it is more preferable that the heating is performed in the temperature range of strain point +5°C to strain point +100°C. By doing so, it is possible to suppress damage to the first and second glass materials 10 and 20 during welding.

図５及び図６に示すガラス接合体１は、第１のガラス材１０と、第１のガラス材１０と接合された第２のガラス材２０とを有する。ガラス接合体１は、有底円筒管状の容器を構成している。第１のガラス材１０と第２のガラス材２０によって構成される接合部３０における成す角の大きさ（θ）は、特に限定されない。接合部３０における成す角の大きさ（θ）は、例えば、９０°未満であってもよいし、９０°であってもよいし、９０°より大きくてもよい。   The glass bonded body 1 shown in FIGS. 5 and 6 has a first glass material 10 and a second glass material 20 bonded to the first glass material 10. The glass bonded body 1 constitutes a bottomed cylindrical tubular container. The size of the angle (θ) formed in the joint portion 30 formed by the first glass material 10 and the second glass material 20 is not particularly limited. The size of the angle (θ) formed in the joint portion 30 may be, for example, less than 90°, 90°, or greater than 90°.

具体的には、本実施形態では、ガラス接合体１は、円筒状の第１のガラス材１０と、第１のガラス材１０の長さ方向における一方側端部を塞ぐように第１のガラス材１０にレーザー溶接された第２のガラス材２０とを備える。   Specifically, in the present embodiment, the glass joined body 1 includes the first glass material 10 having a cylindrical shape and the first glass material 10 so as to close one end portion in the length direction of the first glass material 10. The second glass material 20 laser-welded to the material 10.

本実施形態では、当接部１０ｂ、２０ｄの外側端部１０ｂ１よりも内側にレーザー光ＬＢを照射するため、第２のガラス材２０において、当接部２０ｄ（１０ｂ）から融解が開始していく。このため、当接部２０ｄ（１０ｂ）が融解した後に融解した外側部分２０ｅは、内側に引き寄せられていく。より具体的には、融解した外側部分２０ｅは、接合部３０の内側に引き寄せられていく。このため、第１のガラス材１０と第２のガラス材２０との接合部３０が、他の部分に比べて厚肉となり、内側に突出する突出部３０ａが形成される。従って、高強度なガラス接合体１を得ることができる。   In the present embodiment, since the laser light LB is irradiated to the inside of the outer end portion 10b1 of the contact portions 10b and 20d, melting of the second glass material 20 starts from the contact portion 20d (10b). .. Therefore, after the contact portion 20d (10b) is melted, the melted outer portion 20e is pulled inward. More specifically, the melted outer portion 20e is drawn toward the inside of the joint portion 30. Therefore, the joint portion 30 between the first glass material 10 and the second glass material 20 is thicker than the other portions, and the protruding portion 30a protruding inward is formed. Therefore, the high-strength glass joined body 1 can be obtained.

より高強度なガラス接合体１を得る観点からは、接合部３０をより厚肉にすることが好ましい。従って、第２のガラス材２０の外側部分２０ｅが融解するまで、第２のガラス材２０にレーザー光を照射することが好ましい。このようにすることで、レーザー光を照射した際に、融解した外側部分２０ｅが接合部３０の内側により引き寄せられて、接合部をより厚肉にすることができ、より高強度なガラス接合体１を得ることができる。   From the viewpoint of obtaining a stronger glass joined body 1, it is preferable to make the joined portion 30 thicker. Therefore, it is preferable to irradiate the second glass material 20 with the laser beam until the outer portion 20e of the second glass material 20 is melted. By doing so, when the laser light is irradiated, the melted outer portion 20e is attracted by the inner side of the bonding portion 30, and the bonding portion can be made thicker, and the glass bonded body having higher strength can be obtained. 1 can be obtained.

また、図４に示すように、第２のガラス材２０の主面２０ｂ、２０ｃに対して垂直な方向から視たときに、レーザー光ＬＢの第２のガラス材２０の主面２０ｃにおけるスポットの中心Ｃ１が、第１のガラス材１０の厚み方向において、当接部２０ｄ（１０ｂ）の中心Ｃ２よりも内側に位置するようにレーザー光ＬＢを照射することが好ましい。このようにすることで、融解した外側部分２０ｅが接合部３０の内側に引き込まれやすくなり、接合部３０をさらに厚肉にできる。   Further, as shown in FIG. 4, when viewed from a direction perpendicular to the main surfaces 20b and 20c of the second glass material 20, a spot of the laser light LB on the main surface 20c of the second glass material 20 is formed. It is preferable to irradiate the laser beam LB so that the center C1 is located inside the center C2 of the contact portion 20d (10b) in the thickness direction of the first glass material 10. By doing so, the melted outer portion 20e is easily drawn into the inside of the joint portion 30, and the joint portion 30 can be made thicker.

また、第２のガラス材２０の主面２０ｂ、２０ｃに対して垂直な方向から視たときに、レーザー光ＬＢの第２のガラス材２０の主面２０ｃにおけるスポットが、第１のガラス材１０の厚み方向において、当接部１０ｂ、２０ｄの内側端部１０ｂ２よりも内側にまで至っていることがさらに好ましい。このようにすることで、融解した外側部分２０ｅが内側に引き込まれやすくなり、接合部３０をさらに厚肉にできる。   Further, when viewed from the direction perpendicular to the main surfaces 20b and 20c of the second glass material 20, the spot of the laser light LB on the main surface 20c of the second glass material 20 is the first glass material 10. It is further preferable that the contact portions 10b and 20d extend inward in the thickness direction of the contact portions 10b and 20d. By doing so, the melted outer portion 20e is easily drawn inward, and the joint portion 30 can be made thicker.

なお、図６に示すように、レーザー光ＬＢの照射位置によっては、主面２０ｃに凹部２０ｃ１が形成されることもある。しかしながら、凹部２０ｃ１の深さよりも突出部３０ａの高さの方が高くなる。このため、凹部２０ｃ１が形成された場合であっても、高強度なガラス接合体１を得ることができる。   As shown in FIG. 6, a concave portion 20c1 may be formed on the main surface 20c depending on the irradiation position of the laser beam LB. However, the height of the protrusion 30a is higher than the depth of the recess 20c1. Therefore, even when the recess 20c1 is formed, the high-strength glass bonded body 1 can be obtained.

第１のガラス材１０の厚みをｔ１とし、
当接部２０ｄ（１０ｂ）における第２のガラス材２０の厚みをｔ２とし、
溶接前において、当接部２０ｄ（１０ｂ）よりも外側に位置している外側部分２０ｅの第２のガラス材の厚み方向における断面積をＳとし、
溶接前において、当接部２０ｄ（１０ｂ）よりも外側に位置している外側部分２０ｅの長さをＬとしたときに、以下の条件（１）、（２）を満たすように、第１のガラス材１０に第２のガラス材２０を当接させてレーザー溶接を行うことが好ましい。 The thickness of the first glass material 10 is t 1 ,
The thickness of the second glass material 20 at the contact portion 20d (10b) is t 2 ,
Before welding, the cross-sectional area in the thickness direction of the second glass material of the outer portion 20e located outside the contact portion 20d (10b) is S,
Before welding, when the length of the outer portion 20e located on the outer side of the contact portion 20d (10b) is L, the following conditions (1) and (2) are satisfied so that Laser welding is preferably performed by bringing the second glass material 20 into contact with the glass material 10.

Ｓ≦ｔ１×ｔ２ ……… （１）
Ｌ≦ｔ１ ……… （２）
Ｓがｔ１×ｔ２よりも大きい場合や、Ｌがｔ１よりも大きい場合、レーザー溶接によって外側部分２０ｅが完全に消失しない場合がある。条件（１）や条件（２）を満たすようにレーザー溶接を行うことによって、外側部分２０ｅが消失しやすくなる。 S≦t 1 ×t 2 (1)
L≦t 1 (2)
When S is larger than t 1 ×t 2 or when L is larger than t 1 , the outer portion 20e may not be completely lost by laser welding. By performing laser welding so as to satisfy the conditions (1) and (2), the outer portion 20e is likely to disappear.

なお、本発明のガラス接合体は、例えば、耐腐食性が要求される薬品等の容器として用いることができる。   The glass joined body of the present invention can be used, for example, as a container for chemicals or the like that requires corrosion resistance.

１：ガラス接合体
１０：第１のガラス材
１０ａ：端面
１０ｂ、２０ｄ：当接部
１０ｂ１：外側端部
１０ｂ２：内側端部
２０：第２のガラス材
２０ａ：端部
２０ｂ、２０ｃ：主面
２０ｃ１：凹部
２０ｅ：外側部分
３０：接合部
３０ａ：突出部 1: Glass bonded body 10: First glass material 10a: End surfaces 10b, 20d: Contact portion 10b1: Outer end portion 10b2: Inner end portion 20: Second glass material 20a: End portions 20b, 20c: Main surface 20c1 : Recessed part 20e: outside part 30: joint part 30a: protruding part

Claims (5)

第１のガラス材の端面に第２のガラス材が接合されてなるガラス接合体の製造方法であって、
前記第２のガラス材の端部が、前記第１のガラス材と前記第２のガラス材との当接部よりも外側に至るように、前記第１のガラス材の端面と前記第２のガラス材の主面を当接させる工程と、
前記当接部の外側端部よりも内側にレーザー光を前記第２のガラス材に対して照射することにより前記第２のガラス材の端部を融解させて前記当接部より内側に引き寄せ内側に突出する突出部を形成するように前記第１のガラス材と前記第２のガラス材とを溶接する工程と、
を含む、ガラス接合体の製造方法。 A method for manufacturing a glass joined body, in which a second glass material is joined to an end surface of a first glass material,
The end surface of the first glass material and the second glass material are arranged so that the end portion of the second glass material reaches the outside of the contact portion between the first glass material and the second glass material. A step of abutting the main surface of the glass material,
By irradiating the second glass material with laser light inside the outer end portion of the contact portion, the end portion of the second glass material is melted and pulled inward from the contact portion. Welding the first glass material and the second glass material so as to form a protruding portion that protrudes to
And a method for producing a glass joined body. 前記当接部よりも外側に位置する部分が融解するまでレーザー光を照射する、請求項１に記載のガラス接合体の製造方法。   The method for manufacturing a glass joined body according to claim 1, wherein laser light is irradiated until a portion located outside the contact portion is melted. 前記当接部における前記第１のガラス材の厚みをｔ１とし、
前記当接部における前記第２のガラス材の厚みをｔ２とし、
溶接前において、前記当接部よりも外側に位置している部分の前記第２のガラス材の厚み方向における断面積をＳとしたときに、
Ｓ≦ｔ１×ｔ２
となるように、前記第１のガラス材と前記第２のガラス材とを当接させてレーザー光を照射する、請求項１又は２に記載のガラス接合体の製造方法。 The thickness of the first glass material at the contact portion is t 1 ,
The thickness of the second glass material at the contact portion is t 2 ,
Before welding, when the sectional area in the thickness direction of the second glass material of the portion located outside the abutting portion is S,
S≦t 1 ×t 2
The method for producing a glass joined body according to claim 1 or 2, wherein the first glass material and the second glass material are brought into contact with each other to irradiate laser light so that 前記当接部における前記第１のガラス材の厚みをｔ１とし、
溶接前において、前記当接部よりも外側に位置している部分の長さをＬとしたときに、
Ｌ≦ｔ１となるように前記第１のガラス材と前記第２のガラス材とを当接させてレーザー光を照射する、請求項１〜３のいずれか一項に記載のガラス接合体の製造方法。 The thickness of the first glass material at the contact portion is t 1 ,
Before welding, when the length of the portion located outside the abutting portion is L,
The glass bonded body according to any one of claims 1 to 3, wherein the first glass material and the second glass material are brought into contact with each other to irradiate a laser beam so that L≦t 1 . Production method. 前記第１及び第２のガラス材を歪点以上の温度にまで加熱した状態で、前記第１のガラス材と前記第２のガラス材との溶接を行う、請求項１〜４のいずれか一項に記載のガラス接合体の製造方法。   The welding of the said 1st glass material and the said 2nd glass material is performed in the state which heated the said 1st and 2nd glass material to the temperature of a strain point or more, Any one of Claims 1-4. A method for manufacturing a glass joined body according to item.
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