JP3378136B2 - Backing material for enclosure welding - Google Patents
Backing material for enclosure weldingInfo
- Publication number
- JP3378136B2 JP3378136B2 JP03249496A JP3249496A JP3378136B2 JP 3378136 B2 JP3378136 B2 JP 3378136B2 JP 03249496 A JP03249496 A JP 03249496A JP 3249496 A JP3249496 A JP 3249496A JP 3378136 B2 JP3378136 B2 JP 3378136B2
- Authority
- JP
- Japan
- Prior art keywords
- backing material
- ceramic
- welding
- ceramics
- ceramic member
- 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 - Fee Related
Links
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- Butt Welding And Welding Of Specific Article (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はガスシールドアーク
溶接に使用される裏当材に関し、特に、異形鉄筋の片面
溶接に対して好適であるエンクローズ溶接用裏当材に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backing material used for gas shielded arc welding, and more particularly to a backing material for enclosed welding suitable for single-sided welding of deformed reinforcing bars.
【０００２】[0002]
【従来の技術】異形鉄筋のエンクローズ溶接に関して
は、近時、裏当材（バッキング）としてセラミクスを使
用した種々の溶接方法が開示されている。例えば、裏当
材として、可撓性のセラミクス繊維板を使用する技術は
公知である（特公平４−２０７０６号）。2. Description of the Related Art Recently, various kinds of welding methods using ceramics as a backing material (backing) have been disclosed for the enclosed welding of deformed bars. For example, a technique of using a flexible ceramic fiber board as a backing material is known (Japanese Patent Publication No. 4-20706).
【０００３】また、化学組成が制御された焼結セラミク
ス製の裏当材も開示されている（特公平４−５５７８７
号）。更に、所望の形状の一対の半割体からなるセラミ
クス製部材を蝶着部材により回転自在に蝶着させたバッ
キング部材（特公平６−７１６７９号）、及び溶接され
る鉄筋に固定するための固定用クリップを有するセラミ
クス製のバッキング部材（特公平６−８６０３３号）も
開示されている。A backing material made of sintered ceramics having a controlled chemical composition is also disclosed (Japanese Patent Publication No. 4-55787).
issue). Further, a backing member (Japanese Patent Publication No. 6-71679) in which a ceramic member composed of a pair of halves having a desired shape is rotatably hinged by a hinge member, and fixing for fixing to a rebar to be welded. A ceramic backing member (Japanese Patent Publication No. 6-86033) having a clip for use is also disclosed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、特公平
４−２０７０６号に示す方法においては、セラミクス繊
維板を使用して裏ビードを形成するので、セラミクス繊
維板が有する繊維間の隙間に溶接金属が侵入して、裏ビ
ードの表面に微細な凹凸が発生し、ビードの平滑性及び
美麗性にやや欠けるという問題点がある。However, in the method disclosed in Japanese Patent Publication No. 4-20706, since the back bead is formed by using the ceramic fiber board, the weld metal is formed in the gap between the fibers of the ceramic fiber board. There is a problem in that, when entering, fine irregularities are generated on the surface of the back bead, and the smoothness and beauty of the bead are slightly lacking.
【０００５】一方、その他の従来技術は全て裏当材とし
て固形セラミクスを使用しているが、種々の寸法及び形
状の異形鉄筋の全てに固形セラミクス製の裏当材を適合
させるためには、種々の寸法及び形状を有する裏当材を
製造する必要がある。しかしながら、固形セラミクスの
製造においては、一般的に、高価な金型が必要であるた
め、異形鉄筋の寸法毎に固形セラミクス製の裏当材を準
備するためには、これらの裏当材の製造コストが極めて
高くなってしまう。On the other hand, all the other prior arts use solid ceramics as the backing material, but in order to adapt the backing material made of solid ceramics to all deformed reinforcing bars of various sizes and shapes, various materials have been used. It is necessary to manufacture a backing material having the following dimensions and shapes. However, in the production of solid ceramics, an expensive mold is generally required. Therefore, in order to prepare a backing material made of solid ceramics for each dimension of the deformed rebar, production of these backing materials is required. The cost will be extremely high.
【０００６】また、溶接母材である異形鉄筋はその継手
の位置によって寸法及び凹凸の形状が多種多様であり、
継手部の外径を所望の径に規定することが不可能である
ため、可撓性を殆ど有しない固形セラミクスを種々の継
手形状を有する異形鉄筋に使用することは困難である。[0006] Further, the deformed bar which is the welding base material has various sizes and uneven shapes depending on the position of the joint,
Since it is impossible to define the outer diameter of the joint to a desired diameter, it is difficult to use solid ceramics having almost no flexibility for deformed reinforcing bars having various joint shapes.
【０００７】本発明はかかる問題点に鑑みてなされたも
のであって、任意の外径の溶接母材に対して適用するこ
とができ、製造コストが低減できると共に、優れた外観
の裏ビードを得ることができるエンクローズ溶接用裏当
材を提供することを目的とする。The present invention has been made in view of the above problems, and can be applied to a welding base material having an arbitrary outer diameter to reduce the manufacturing cost and to provide a back bead having an excellent appearance. An object is to provide a backing material for enclosed welding that can be obtained.
【０００８】[0008]
【課題を解決するための手段】本発明に係るエンクロー
ズ溶接用裏当材は、複数本の棒状のセラミクス部材と、
前記セラミクス部材を並列に整列させ、隣接するセラミ
クス部材同士を夫々屈曲可能に繋支する繋止材とを有
し、前記繋止材はセラミクス繊維、セラミクス帯及びセ
ラミクス網からなる群から選択された１種の可撓性部材
により構成されていて、前記セラミクス部材の表面に固
定されていることを特徴とする。The backing material for enclosed welding according to the present invention comprises a plurality of rod-shaped ceramic members.
The ceramic members are arranged in parallel, and a stopper for connecting the adjacent ceramic members to each other in a bendable manner is provided.
However, the above-mentioned stopper is made of ceramic fiber, ceramic band and
One kind of flexible member selected from the group consisting of lamex nets
And is fixed on the surface of the ceramic member.
Characterized that you have been fixed.
【０００９】本発明に係る他のエンクローズ溶接用裏当
材は、複数本の棒状のセラミクス部材と、前記セラミク
ス部材を並列に整列させ、隣接するセラミクス部材同士
を夫々屈曲可能に繋止する繋止材とを有し、前記繋止材
は金属線により構成されていることを特徴とする。Another enclosure backing material according to the present invention comprises a plurality of rod-shaped ceramic members and the ceramic material.
The ceramic members in parallel, and the adjacent ceramic members
And a locking material that locks each of them so that they can be bent.
Is composed of a metal wire .
【００１０】本発明に係る更に他のエンクローズ溶接用
裏当材は、１枚の矩形板状のセラミクス部材により構成
されており、前記セラミクス部材の１方の面には幅方向
に延びる複数本の平行な切り欠きが前記セラミクス部材
の長手方向に一定ピッチで形成されており、前記セラミ
クス部材に形成された前記切り欠きに対して直交する方
向に繋止材が固定されており、折曲時に前記繋止材によ
り前記セラミクス部材が繋止され、前記繋止材はセラミ
クス繊維、セラミクス帯及びセラミクス網からなる群か
ら選択された１種の可撓性部材により構成されていて、
前記他方の面に固定されていることを特徴とする。 For yet another enclosed welding according to the present invention
The backing material is composed of one rectangular plate-shaped ceramic member
The width direction on one surface of the ceramic member.
A plurality of parallel notches extending in the
Are formed at a constant pitch in the longitudinal direction of the
One orthogonal to the notch formed in the box member
The locking member is fixed in the direction
The ceramic member is locked, and the locking material is a ceramic
Fiber group, ceramic band and ceramic net
It is composed of one kind of flexible member selected from
It is fixed to the other surface.
【００１１】[0011]
【００１２】本発明においては、並列に配置された棒状
のセラミクス部材を繋止材により屈曲可能に繋止するこ
とにより裏当材が構成されているので、継手の位置によ
って外径等が異なる異形鉄筋等に対しても、任意の外径
の継手部に沿って配置することができる。In the present invention, since the backing material is constituted by connecting the rod-shaped ceramics members arranged in parallel in a bendable manner with the retaining material, the deformed shape whose outer diameter and the like differ depending on the position of the joint. Even for a reinforcing bar or the like, it can be arranged along a joint portion having an arbitrary outer diameter.
【００１３】また、１枚の矩形板状のセラミクス部材の
１方の面に、幅方向に延びる複数本の平行な切り欠きを
形成することによっても同様な利点を有する裏当材を得
ることができる。即ち、セラミクス部材に形成された切
り欠きを異形鉄筋等の溶接母材の長手方向に平行にする
と共に、この切り欠きが形成されていない面を溶接母材
側として配置し、溶接時にこの裏当材を溶接母材に沿っ
て曲げ折る。そうすると、この裏当材は、複数の棒状の
セラミクス部材に分離するので、種々の外径の溶接母材
に適用することができる。Further, a backing material having similar advantages can be obtained by forming a plurality of parallel notches extending in the width direction on one surface of one rectangular plate-shaped ceramics member. it can. That is, the notch formed in the ceramics member is made parallel to the longitudinal direction of the welding base metal such as deformed rebar, and the surface not having the notch is arranged as the welding base metal side. Bend the material along the weld base metal. Then, since the backing material is separated into a plurality of rod-shaped ceramic members, the backing material can be applied to welding base materials having various outer diameters.
【００１４】また、この裏当材に切り欠きに対して直交
する方向、即ち、裏当材の長手方向に繋止材が固定され
ていると、折曲時において、複数の棒状のセラミクス部
材が屈曲可能に構成された裏当材と同様の形状となるの
で、同様に、所望の径に調整することができる。When the backing material is fixed to the backing material in a direction orthogonal to the notch, that is, in the longitudinal direction of the backing material, a plurality of rod-shaped ceramic members are formed at the time of bending. Since the backing material has a shape similar to that of the backing material that can be bent, the desired diameter can be similarly adjusted.
【００１５】このように、裏当材が種々の径に屈曲又は
曲げ折ることができると、溶接母材径毎に裏当材を作製
する必要がないので、裏当材の製造コストを低減させる
ことができる。As described above, when the backing material can be bent or bent into various diameters, it is not necessary to manufacture the backing material for each diameter of the welding base material, and thus the manufacturing cost of the backing material is reduced. be able to.
【００１６】また、繋止材として可撓性部材を使用し、
この繋止材を裏当材の表面に固定すると共に、繋止材が
溶接母材側となるように配置して溶接すると、この可撓
性部材が溶接母材である異形鉄筋の表面の凹凸によって
撓む。従って、裏当材と異形鉄筋表面との間の密着性が
向上し、溶接金属の流れ落ちを防止することができるの
で、優れた形状の裏ビードを得ることができる。Further, a flexible member is used as the stopper,
When fixing this stopper to the surface of the backing material and arranging the stopper so that the stopper is on the side of the welding base material and welding, the unevenness of the surface of the deformed rebar whose flexible member is the welding base material Bends by. Therefore, the adhesion between the backing material and the surface of the deformed reinforcing bar is improved, and the flow of the weld metal can be prevented, so that the back bead having an excellent shape can be obtained.
【００１７】[0017]
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施例について添
付の図面を参照して具体的に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.
【００１９】図１は本発明の第１の実施例に係る溶接用
裏当材を示す平面図であり、図２はその正面図、図３は
その側面図である。また、図４は図３のＡ部を拡大して
示す模式図である。FIG. 1 is a plan view showing a welding backing material according to a first embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a side view thereof. Further, FIG. 4 is a schematic view showing an enlarged part A of FIG.
【００２０】溶接用裏当材１は、複数の棒状のセラミク
ス部材２が繋止材である針金３によって繋止されること
により構成されている。各セラミクス部材２はその側方
向の両端面２ａが円弧状に成形されていて、隣接するセ
ラミクス部材２の端面２ａ同士が接するように、各セラ
ミクス部材２が並列に配置されている。そして、セラミ
クス部材２の長手方向の両端部から若干中央寄りの２カ
所において、長手方向に対して垂直の方向に針金３が圧
入された後、焼成されることによって、各セラミクス部
材２が針金３により簾状に繋止されている。なお、針金
３は隣接するセラミクス部材２の接線４の近傍に位置す
るように圧入されている。The welding backing material 1 is constructed by connecting a plurality of rod-shaped ceramic members 2 with a wire 3 which is a locking material. Both side faces 2a of each ceramic member 2 in the lateral direction are formed in an arc shape, and the ceramic members 2 are arranged in parallel so that the end faces 2a of the adjacent ceramic members 2 are in contact with each other. Then, at two places slightly closer to the center from both longitudinal ends of the ceramic member 2, the wires 3 are press-fitted in a direction perpendicular to the longitudinal direction and then fired, so that each ceramic member 2 is made into a wire 3. It is locked like a blind by. The wire 3 is press-fitted so as to be located near the tangent line 4 of the adjacent ceramics member 2.
【００２１】セラミクス部材２の組成としては、ビード
の形成を考慮して、例えば、ＳｉＯ2 が５０乃至６０重
量％、Ａｌ2Ｏ3が２０乃至３０重量％、ＭｇＯが１０乃
至２０重量％、Ｆｅ2Ｏ3が１乃至３重量％であるような
焼成物を使用することができる。また、針金３の材質
は、針金３とセラミクス部材２との付着力及びセラミク
ス部材２間の屈曲性を確保すると共に、焼成時の耐熱性
を得ることができるように選択する。例えば、線径が
０．５０ｍｍであるＪＩＳ普通鉄線ＳＷＭ−Ｂ等を使用
することができる。The composition of the ceramic member 2 is, for example, 50 to 60% by weight of SiO 2 , 20 to 30% by weight of Al 2 O 3 , 10 to 20% by weight of MgO, and Fe in consideration of formation of beads. It is possible to use a calcined product in which 2 O 3 is 1 to 3% by weight. Further, the material of the wire 3 is selected so as to secure the adhesive force between the wire 3 and the ceramics member 2 and the flexibility between the ceramics members 2 and to obtain the heat resistance during firing. For example, JIS ordinary iron wire SWM-B having a wire diameter of 0.50 mm can be used.
【００２２】このように構成された溶接用裏当材１を使
用して溶接する場合には、図５に示すように、異形鉄筋
等の溶接母材５の外周面５ａに沿って裏当材１を配置
し、この裏当材１を外面側から当金等の溶接治具（図示
せず）によって支持する。そして、溶接母材５の内面５
ｂ側から裏当材１の方向に向かって溶接する。When welding is performed using the welding backing material 1 thus constructed, as shown in FIG. 5, the backing material is provided along the outer peripheral surface 5a of the welding base material 5 such as a deformed bar. 1 is arranged, and the backing material 1 is supported from the outer surface side by a welding jig (not shown) such as a metal plate. Then, the inner surface 5 of the welding base material 5
Weld from the side b toward the backing material 1.
【００２３】前述の如く、裏当材１を構成する各セラミ
クス部材２の両端面２ａは円弧状に形成されており、針
金３は隣接するセラミクス部材２の接線４の近傍におい
てセラミクス部材２同士を繋止しているので、この接線
４を中心として、裏当材１は内外側に所定の角度で屈曲
させることができる。従って、裏当材１は、溶接母材５
の外径Ｒの変動に対応して、多角筒面を形成することが
できる。As described above, both end faces 2a of each ceramic member 2 constituting the backing material 1 are formed in an arc shape, and the wire 3 is formed between the ceramic members 2 in the vicinity of the tangent line 4 of the adjacent ceramic members 2. Since they are locked, the backing material 1 can be bent inward and outward at a predetermined angle around this tangent line 4. Therefore, the backing material 1 is the welding base material 5
The polygonal cylindrical surface can be formed in accordance with the variation of the outer diameter R of.
【００２４】ところで、溶接時において、セラミクスと
溶融池との接触又はアーク熱によってセラミクスは溶融
し、スラグを形成するため、溶接ビードを平滑化させる
効果を有する。従って、隣接するセラミクス部材２間の
なす角（屈曲角）は可及的に１８０°に近づけることが
好ましい。即ち、母材５に沿って屈曲した裏当材１の形
状を略円筒形状に近づけるようにすると、裏ビードの形
状は良好になる。しかしながら、裏当材１を略円筒形状
になるように屈曲させるためには、セラミクス部材２の
ピッチを狭くする必要があるので、製造コストが増加す
る原因となり、好ましくない。一方、屈曲角を１３５°
未満、例えば、１２０°とすると、裏ビードの表面に顕
著な角部が発生するので、平滑な裏ビード形状を得るた
めには、溶接終了後にこの角部をグラインダ研削する必
要がある。そこで、本発明においては、屈曲角を１３５
°以上に定めると、良好な裏ビードが得られる。By the way, at the time of welding, the ceramics are melted by the contact between the ceramics and the molten pool or the arc heat to form slag, which has the effect of smoothing the weld beads. Therefore, it is preferable that the angle (bending angle) formed between the adjacent ceramic members 2 be as close to 180 ° as possible. That is, when the shape of the backing material 1 bent along the base material 5 is made to approach a substantially cylindrical shape, the shape of the back bead becomes good. However, in order to bend the backing material 1 to have a substantially cylindrical shape, it is necessary to narrow the pitch of the ceramics members 2, which causes an increase in manufacturing cost, which is not preferable. On the other hand, the bending angle is 135 °
If the angle is less than 120 °, for example, 120 °, a remarkable corner portion is generated on the surface of the back bead. Therefore, in order to obtain a smooth back bead shape, it is necessary to grind the corner after the welding is completed. Therefore, in the present invention, the bending angle is 135
A good back bead can be obtained by setting the angle above.
【００２５】例えば、溶接母材５が実用上の最小径であ
るとき、即ち、平均直径が１３ｍｍであるとき、屈曲角
を１３５°とすると、セラミクス部材２の幅を７ｍｍに
すると良い。また、溶接母材５の直径が１３ｍｍよりも
太径であるとき、同様に、７ｍｍの幅を有するセラミク
ス部材２を適用すると、屈曲角は１３５°以上になるの
で、更に一層優れた形状の裏ビードを得ることができ
る。For example, when the welding base material 5 has a practical minimum diameter, that is, when the average diameter is 13 mm, and the bending angle is 135 °, the width of the ceramic member 2 may be 7 mm. Further, when the diameter of the welding base material 5 is thicker than 13 mm, when the ceramics member 2 having a width of 7 mm is similarly applied, the bending angle becomes 135 ° or more. You can get a bead.
【００２６】図６（ａ）及び（ｂ）は本発明の第２の実
施例に係る溶接用裏当材の製造方法の１例を示す斜視図
である。本実施例において、第１の実施例と異なる点
は、繋止材として使用する針金の位置のみであるので、
第１の実施例と同一物には同一符号を付して、その詳細
な説明は省略する。FIGS. 6 (a) and 6 (b) are perspective views showing an example of a method for manufacturing a backing material for welding according to the second embodiment of the present invention. In this embodiment, the difference from the first embodiment is only the position of the wire used as the stopper,
The same parts as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.
【００２７】先ず、図６（ａ）に示すように、複数の棒
状のセラミクス部材２を並列に整列させ、各セラミクス
部材２の長手方向の両端部から若干中央寄りの２カ所
に、セラミクス部材２に直交するように２本の針金３を
配置する。次いで、針金３と複数本のセラミクス部材２
とを、面状に整列されたセラミクス部材の面に対して垂
直に圧縮する。First, as shown in FIG. 6 (a), a plurality of rod-shaped ceramic members 2 are aligned in parallel, and the ceramic members 2 are located at two positions slightly closer to the center from both longitudinal ends of each ceramic member 2. Two wires 3 are arranged so as to be orthogonal to. Next, the wire 3 and the plurality of ceramic members 2
And are compressed perpendicularly to the planes of the ceramic members arranged in a plane.
【００２８】そうすると、図６（ｂ）に示すように、針
金３とセラミクス部材２とが圧着すると共に、セラミク
ス部材２が変形し、各セラミクス部材２の側方向の両端
面２ａが円弧状に成形されて、裏当材６は第１の実施例
と同様の形状になる。Then, as shown in FIG. 6 (b), the wire 3 and the ceramics member 2 are pressure-bonded to each other, and the ceramics member 2 is deformed so that both end surfaces 2a of each ceramics member 2 in the lateral direction are formed into an arc shape. As a result, the backing material 6 has the same shape as that of the first embodiment.
【００２９】本実施例は前記第１の実施例と比較して、
針金３がセラミクス部材２の表面付近に配置されてい
る。従って、針金３が配置されている側を内側として屈
曲することができる。このように、繋止材である針金３
の位置は、裏当材６の屈曲可能な方向によって決定する
ことができる。This embodiment is different from the first embodiment in that
The wire 3 is arranged near the surface of the ceramic member 2. Therefore, the side on which the wire 3 is arranged can be bent with the side inside. In this way, the wire 3 that is the locking material
The position of can be determined by the bendable direction of the backing material 6.
【００３０】図７は本発明の第３の実施例に係る溶接用
裏当材を示す平面図であり、図８はその正面図、図９は
その側面図である。FIG. 7 is a plan view showing a welding backing material according to a third embodiment of the present invention, FIG. 8 is a front view thereof, and FIG. 9 is a side view thereof.
【００３１】本実施例の裏当材１１においては、繋止材
としてセラミクス繊維フェルト１３を使用している。即
ち、複数の棒状のセラミクス部材１２よりも耐熱性が高
いセラミクス繊維フェルト１３をセラミクス部材１２に
添着し、焼成することにより、セラミクス繊維フェルト
１３がセラミクス部材１２と焼着し、セラミクス部材１
２の繋止材として作用する。各セラミクス部材１２の形
状は第１の実施例と同様である。In the backing material 11 of this embodiment, the ceramic fiber felt 13 is used as a retaining material. That is, the ceramics fiber felt 13 having higher heat resistance than the rod-shaped ceramics members 12 is attached to the ceramics member 12 and fired, so that the ceramics fiber felt 13 is burned with the ceramics member 12, and the ceramics member 1
Acts as a locking material for 2. The shape of each ceramic member 12 is similar to that of the first embodiment.
【００３２】このように構成された裏当材１１において
は、図１０に示すように、セラミクス繊維フェルト１３
側を溶接母材１５の外周面１５ａに当て、裏当材１１を
外面側から当金等の溶接治具（図示せず）によって支持
し、溶接母材１５の内面１５ｂ側から裏当材１１の方向
に向かって溶接する。セラミクス繊維フェルト１３は、
隣接するセラミクス部材１２の溶接母材１５側でセラミ
クス部材１２同士を繋止しているので、裏当材１１はフ
ェルト１３側に所定の角度で屈曲させることができる。
従って、裏当材１１は、溶接母材１５の外径Ｒの変動に
対応して、多角筒面を形成することができる。また、本
実施例は可撓性のセラミクス繊維フェルト１３を溶接母
材１５に当てているので、第１の実施例と比較して、異
形鉄筋等の溶接母材１５と裏当材１１との密着性を高め
ることができる。In the backing material 11 thus constructed, as shown in FIG. 10, the ceramic fiber felt 13 is used.
The outer surface 15a of the welding base material 15 is applied to the backing material 11, the backing material 11 is supported from the outer surface side by a welding jig (not shown) such as a metal plate, and the backing material 11 is applied from the inner surface 15b side of the welding base material 15. Weld in the direction of. Ceramic fiber felt 13
Since the ceramic members 12 are connected to each other on the side of the welding base material 15 of the adjacent ceramic members 12, the backing material 11 can be bent toward the felt 13 at a predetermined angle.
Therefore, the backing material 11 can form a polygonal cylindrical surface corresponding to the variation of the outer diameter R of the welding base material 15. In addition, since the flexible ceramic fiber felt 13 is applied to the welding base material 15 in the present embodiment, the welding base material 15 such as deformed rebar and the backing material 11 are compared with the first embodiment. Adhesion can be improved.
【００３３】第３の実施例においては、セラミクス繊維
フェルトを繋止材として使用したが、第１及び第２の実
施例において示した裏当材１と溶接母材５との間にセラ
ミクス繊維フェルトのような弾性材を挟み込むようにし
て溶接することもできる。そうすると、第３の実施例と
同様に、溶接母材と裏当材との密着性を高めることがで
きる。In the third embodiment, the ceramic fiber felt was used as the anchoring material, but between the backing material 1 and the welding base material 5 shown in the first and second embodiments, the ceramic fiber felt was used. It is also possible to weld by sandwiching an elastic material such as. Then, similar to the third embodiment, the adhesion between the welding base material and the backing material can be enhanced.
【００３４】図１１は本発明の第４の実施例に係る溶接
用裏当材を示す平面図であり、図１２はその正面図、図
１３はその側面図である。また、図１４は図１３のＢ部
を拡大して示す模式図である。FIG. 11 is a plan view showing a welding backing material according to a fourth embodiment of the present invention, FIG. 12 is a front view thereof, and FIG. 13 is a side view thereof. Further, FIG. 14 is a schematic view showing an enlarged part B of FIG.
【００３５】本実施例においては、繋止材として鋼帯２
３を使用している。即ち、複数の棒状のセラミクス部材
２２の中央に鋼帯２３を押入し、焼成することにより、
鋼帯２３がセラミクス部材２２と焼着して繋止材として
作用し、各セラミクス部材２２が簾状に繋止される。各
セラミクス部材２２は台形柱状であり、鋼帯２３を焼着
する面と反対側の面において、セラミクス部材２２の側
方向の両端面が切り欠かれ、斜面２２ａを形成してい
る。In this embodiment, the steel strip 2 is used as the stopper.
I am using 3. That is, by pressing the steel strip 23 into the center of the plurality of rod-shaped ceramic members 22 and firing it,
The steel strip 23 is baked on the ceramics member 22 and acts as a locking material, and each ceramics member 22 is locked like a blind. Each ceramics member 22 has a trapezoidal columnar shape, and both side surfaces of the ceramics member 22 in the lateral direction are cut out on the surface opposite to the surface on which the steel strip 23 is baked to form a slope 22a.
【００３６】鋼帯２３としては、例えば、厚さが０．５
ｍｍ、幅が１５ｍｍであるＪＩＳＧ ３１４１冷間圧延
鋼帯を使用することができる。The steel strip 23 has a thickness of 0.5, for example.
JIS G 3141 cold rolled steel strips having a width of 15 mm and a width of 15 mm can be used.
【００３７】このように構成された裏当材２１において
は、鋼帯２３側を溶接母材（図示せず）の外周面に当
て、裏当材２１を外面側から当金等の溶接治具（図示せ
ず）によって支持した後、溶接母材の内面側から裏当材
２１の方向に向かって溶接する。鋼帯２３は、隣接する
セラミクス部材２２の溶接母材側でセラミクス部材２２
同士を繋止しているので、裏当材２１は鋼帯２３側に所
定の角度で屈曲させることができる。また、裏当材２１
を溶接母材に当てて溶接すると、溶接母材の開先空間に
は、溶接母材に接続された導電性の鋼帯２３が配置され
ているので、溶接ワイヤ（図示せず）と鋼帯２３との間
に安定した良好なアークを発生させることができる。In the backing material 21 thus constructed, the steel strip 23 side is brought into contact with the outer peripheral surface of the welding base material (not shown), and the backing material 21 is welded from the outer surface side to a welding jig or the like. After being supported by (not shown), welding is performed from the inner surface side of the welding base material toward the backing material 21. The steel strip 23 is provided on the side of the welding base material of the adjacent ceramic members 22.
Since they are connected to each other, the backing material 21 can be bent toward the steel strip 23 side at a predetermined angle. Also, the backing material 21
When the welding is performed by applying the to the welding base metal, the conductive steel strip 23 connected to the welding base metal is arranged in the groove space of the welding base metal, so that the welding wire (not shown) and the steel strip It is possible to generate a stable and good arc between the first and second electrodes.
【００３８】図１５は本発明の第５の実施例に係る溶接
用裏当材を示す平面図であり、図１６はその正面図であ
る。また、図１７は図１６のＣ部を拡大して示す模式図
である。FIG. 15 is a plan view showing a welding backing material according to the fifth embodiment of the present invention, and FIG. 16 is a front view thereof. In addition, FIG. 17 is a schematic view showing an enlarged part C of FIG.
【００３９】本実施例は第１乃至第４の実施例と異な
り、裏当材３１は１枚の矩形板状のセラミクス部材３２
により構成されている。セラミクス部材３２は屈曲する
外面側となる面に、矩形板上のセラミクス部材３２の幅
方向に延びる複数の平行な直線状の切り欠き３２ａがセ
ラミクス部材３２の長手方向に一定ピッチで形成されて
いる。なお、当該ピッチは厳密に一定である必要はな
く、ほぼ一定であればよい。This embodiment differs from the first to fourth embodiments in that the backing material 31 is a rectangular plate-shaped ceramic member 32.
It is composed by. The ceramic member 32 has a plurality of parallel linear cutouts 32a extending in the width direction of the rectangular ceramic member 32 at a constant pitch in the longitudinal direction of the ceramic member 32 on the surface that is the outer surface that bends. . The pitch does not have to be strictly constant, and may be almost constant.
【００４０】このように構成された溶接用裏当材３１を
使用して溶接する場合には、先ず、溶接母材（図示せ
ず）の外周面に裏当材３１の切り欠き３２ａが形成され
ていない面を当て、裏当材３１を支持するために、外側
から当金等の溶接治具（図示せず）を配置する。次い
で、異形鉄筋等の溶接母材を溶接治具に押しつけること
によって、裏当材３１を溶接母材に沿って折り曲げて、
接触させた後、溶接母材間に設けた開先内に溶接ワイヤ
を挿入し、開先奥部の裏当材３１の近傍から溶接を開始
する。When welding is performed using the welding backing material 31 thus constructed, first, the notch 32a of the backing material 31 is formed on the outer peripheral surface of the welding base material (not shown). A welding jig (not shown) such as a metal plate is arranged from the outside in order to apply a non-coated surface and support the backing material 31. Next, the backing material 31 is bent along the welding base material by pressing the welding base material such as deformed reinforcing bar against the welding jig,
After the contact, the welding wire is inserted into the groove provided between the welding base materials, and welding is started in the vicinity of the backing material 31 at the deep part of the groove.
【００４１】本実施例においては、セラミクス部材３２
に切り欠き３２ａが形成されることにより、肉厚が薄い
喉部３２ｂが形成されているので、この喉部３２ｂにお
いて、容易に裏当材３１を曲げ折ることができる。従っ
て、切り欠き３２ａの形状及び深さは、押圧する力に応
じて適宜決定することができる。例えば、機械等を使用
することなく、指の力により溶接母材に裏当材３１を押
しつけ、裏当材３１を曲げ折る場合には、裏当材３１の
隣り合う切り欠きと切り欠きとの間の幅を７ｍｍとする
と、喉部３２ｂの厚さｕは３ｍｍ以下にすることが好ま
しい。In this embodiment, the ceramic member 32
Since the throat portion 32b having a small thickness is formed by forming the notch 32a in the throat portion 32b, the backing material 31 can be easily bent at the throat portion 32b. Therefore, the shape and depth of the notch 32a can be appropriately determined according to the pressing force. For example, when the backing material 31 is pressed against the welding base material by the force of a finger and the backing material 31 is bent and folded without using a machine or the like, when the backing material 31 has adjacent notches and notches. If the width is 7 mm, the thickness u of the throat portion 32b is preferably 3 mm or less.
【００４２】更にまた、本実施例においては、第３又は
第４の実施例に示すように、裏当材３１の溶接母材側の
面にセラミクス繊維フェルト等の可撓性部材を焼着する
か、又は鋼帯等の導電性部材を焼着してもよい。裏当材
３１を曲げ折ると、セラミクス部材３２は複数の棒状に
分離するため、焼着された可撓性部材又は導電性部材は
繋止材として作用することができると共に、第３又は第
４の実施例と同様の効果を得ることができる。Furthermore, in this embodiment, as shown in the third or fourth embodiment, a flexible member such as ceramic fiber felt is baked on the surface of the backing material 31 on the side of the welding base material. Alternatively, a conductive member such as a steel strip may be baked. When the backing material 31 is bent and bent, the ceramics member 32 is separated into a plurality of rods, so that the baked flexible member or conductive member can act as a locking member, and the third or fourth member can be used. It is possible to obtain the same effect as that of the embodiment.
【００４３】[0043]
【発明の効果】以上詳述したように、本発明によれば、
裏当材が屈曲又は曲折可能に構成されているので、任意
の外径の溶接母材に対して適用することができ、裏当材
の製造コストを低減することができる。また、裏当材の
屈曲部又は曲折部を繋止する繋止材を適切に選択する
と、優れた外観の裏ビードを得ることができる。As described in detail above, according to the present invention,
Since the backing material is configured to be bendable or bendable, it can be applied to a welding base material having an arbitrary outer diameter, and the manufacturing cost of the backing material can be reduced. In addition, a back bead having an excellent appearance can be obtained by appropriately selecting a locking material that locks the bent portion or the bent portion of the backing material.
【図１】本発明の第１の実施例に係る溶接用裏当材を示
す平面図である。FIG. 1 is a plan view showing a welding backing material according to a first embodiment of the present invention.
【図２】本発明の第１の実施例に係る溶接用裏当材を示
す正面図である。FIG. 2 is a front view showing a backing material for welding according to the first embodiment of the present invention.
【図３】本発明の第１の実施例に係る溶接用裏当材を示
す側面図である。FIG. 3 is a side view showing a welding backing material according to the first embodiment of the present invention.
【図４】図３のＡ部を拡大して示す模式図である。FIG. 4 is a schematic view showing an enlarged part A of FIG.
【図５】本発明の第１の実施例に係る溶接用裏当材の使
用時の形状を示す模式的断面図である。FIG. 5 is a schematic cross-sectional view showing the shape of the welding backing material according to the first embodiment of the present invention when in use.
【図６】本発明の第２の実施例に係る溶接用裏当材の製
造方法の１例を示す斜視図である。FIG. 6 is a perspective view showing an example of a method for manufacturing a welding backing material according to the second embodiment of the present invention.
【図７】本発明の第３の実施例に係る溶接用裏当材を示
す平面図である。FIG. 7 is a plan view showing a welding backing material according to a third embodiment of the present invention.
【図８】本発明の第３の実施例に係る溶接用裏当材を示
す正面図である。FIG. 8 is a front view showing a welding backing material according to a third embodiment of the present invention.
【図９】本発明の第３の実施例に係る溶接用裏当材を示
す側面図である。FIG. 9 is a side view showing a welding backing material according to a third embodiment of the present invention.
【図１０】本発明の第３の実施例に係る溶接用裏当材の
使用時の形状を示す模式的断面図である。FIG. 10 is a schematic cross-sectional view showing a shape of a backing material for welding according to a third embodiment of the present invention when in use.
【図１１】本発明の第４の実施例に係る溶接用裏当材を
示す平面図である。FIG. 11 is a plan view showing a welding backing material according to a fourth embodiment of the present invention.
【図１２】本発明の第４の実施例に係る溶接用裏当材を
示す正面図である。FIG. 12 is a front view showing a welding backing material according to a fourth embodiment of the present invention.
【図１３】本発明の第４の実施例に係る溶接用裏当材を
示す側面図である。FIG. 13 is a side view showing a welding backing material according to a fourth embodiment of the present invention.
【図１４】図１３のＢ部を拡大して示す模式図である。FIG. 14 is a schematic view showing an enlarged part B of FIG.
【図１５】本発明の第５の実施例に係る溶接用裏当材を
示す平面図である。FIG. 15 is a plan view showing a welding backing material according to a fifth embodiment of the present invention.
【図１６】本発明の第５の実施例に係る溶接用裏当材を
示す正面図である。FIG. 16 is a front view showing a welding backing material according to a fifth embodiment of the present invention.
【図１７】図１６のＣ部を拡大して示す模式図である。FIG. 17 is a schematic view showing an enlarged part C of FIG.
１、１１、２１、３１、６；裏当材 ２、１２、２２、３２；セラミクス部材 ３；針金 ５、１５；溶接母材 １３；セラミクス繊維フェルト ２３；鋼帯 ３２ａ；切り欠き 1, 11, 21, 31, 6; Backing material 2, 12, 22, 32; Ceramics member 3; wire 5, 15; Welding base metal 13; Ceramic fiber felt 23; Steel strip 32a; cutout
Claims (3)
セラミクス部材を並列に整列させ、隣接するセラミクス
部材同士を夫々屈曲可能に繋支する繋止材とを有し、前
記繋止材はセラミクス繊維、セラミクス帯及びセラミク
ス網からなる群から選択された１種の可撓性部材により
構成されていて、前記セラミクス部材の表面に固定され
ていることを特徴とするエンクローズ溶接用裏当材。And 1. A plurality of rod-like ceramic member, the ceramic member are aligned in parallel, adjacent ceramic members to each other respectively bendable in possess a joint sealant that Tsunagi支, before
The retaining material is ceramic fiber, ceramic band and ceramic.
A flexible member selected from the group consisting of
And is fixed to the surface of the ceramic member.
Enclosed welding backing material, characterized in Tei Rukoto.
セラミクス部材を並列に整列させ、隣接するセラミクス
部材同士を夫々屈曲可能に繋止する繋止材とを有し、前
記繋止材は金属線により構成されていることを特徴とす
るエンクローズ溶接用裏当材。2. A plurality of bar-like ceramic member, the ceramic member are aligned in parallel, adjacent ceramic members to each other respectively bendable in possess a joint sealant for locking, before
Enclosed welding backing material Kitsunagitomezai is characterized that you have been made of metal wire.
構成されており、前記セラミクス部材の１方の面には幅
方向に延びる複数本の平行な切り欠きが前記セラミクス
部材の長手方向に一定ピッチで形成されており、前記セ
ラミクス部材に形成された前記切り欠きに対して直交す
る方向に繋止材が固定されており、折曲時に前記繋止材
により前記セラミクス部材が繋止され、前記繋止材はセ
ラミクス繊維、セラミクス帯及びセラミクス網からなる
群から選択された１種の可撓性部材により構成されてい
て、前記他方の面に固定されていることを特徴とするエ
ンクローズ溶接用裏当材。3. A ceramic member in the form of a rectangular plate, wherein one surface of the ceramic member has a plurality of parallel notches extending in the width direction which are constant in the longitudinal direction of the ceramic member. It is formed with a pitch, and the
It is orthogonal to the notch formed in the laminating member.
The locking material is fixed in the direction
The ceramic member is locked by the
Composed of ramix fiber, ceramic band and ceramic mesh
Composed of one kind of flexible member selected from the group
And being fixed to the other surface, a backing material for enclosed welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03249496A JP3378136B2 (en) | 1996-02-20 | 1996-02-20 | Backing material for enclosure welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03249496A JP3378136B2 (en) | 1996-02-20 | 1996-02-20 | Backing material for enclosure welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09225685A JPH09225685A (en) | 1997-09-02 |
| JP3378136B2 true JP3378136B2 (en) | 2003-02-17 |
Family
ID=12360556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03249496A Expired - Fee Related JP3378136B2 (en) | 1996-02-20 | 1996-02-20 | Backing material for enclosure welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3378136B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000012430A (en) * | 1999-12-03 | 2000-03-06 | 이수환 | The method of preparing ceramic back up material for welding |
| JP5429923B2 (en) * | 2008-09-30 | 2014-02-26 | 株式会社武蔵野 | Backing material for gas shielded arc-enclosed welding of steel bars |
| CN104661790B (en) * | 2013-08-20 | 2016-05-18 | 株式会社须之内 | Welding backing plate |
| JP7235635B2 (en) * | 2019-10-01 | 2023-03-08 | 株式会社神戸製鋼所 | Sliding copper pad for welding and welding method |
-
1996
- 1996-02-20 JP JP03249496A patent/JP3378136B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09225685A (en) | 1997-09-02 |
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