JP3192909U - Backing material for welding - Google Patents

Backing material for welding Download PDF

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JP3192909U
JP3192909U JP2014001961U JP2014001961U JP3192909U JP 3192909 U JP3192909 U JP 3192909U JP 2014001961 U JP2014001961 U JP 2014001961U JP 2014001961 U JP2014001961 U JP 2014001961U JP 3192909 U JP3192909 U JP 3192909U
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backing material
welding
arc
shaped portion
connecting sheet
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康二 渡部
康二 渡部
光 和久井
光 和久井
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SUNOUCHI CORPORATION
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Priority to PCT/JP2014/069465 priority patent/WO2015025671A1/en
Priority to CN201480001368.8A priority patent/CN104661790B/en
Priority to KR1020147032983A priority patent/KR101740107B1/en
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Abstract

【課題】溶接抜けを防止でき、溶接部に異物が混入せず、また固化した溶融金属の表面を滑らかで綺麗にすることができる溶接用裏当て材を提供する。
【解決手段】複数本の棒状の無機質材料製裏当て材部品が金属製連結シート14で連結され、裏当て材部品の各々が、連結シート接着面16、その上部の被溶接物に接触する被溶接物接触面18、および第1、第2側壁面を備え、第1側壁面20は、横に凸型で、連結シート接着面の一方の側縁から上方に所定長立ち上がる第1立ち上がり部24、および被溶接物接触面まで延びる凸弧状部26を備え、第2側壁面22は、横に凹型で、連結シート接着面の他方の側縁から上方に第1立ち上がり部よりは短く立ち上がる第2立ち上がり部28、および凸弧状部の半径以上で被溶接物接触面まで延びる凹弧状部30を備え、被溶接物接触面には、側面形状が短軸を中心とした楕円弧状の凹部32が幅方向に延びるように形成されている。
【選択図】図2
The present invention provides a welding backing material that can prevent weld dropout, prevent foreign matter from entering a welded portion, and can smooth and clean the surface of a solidified molten metal.
A plurality of rod-like inorganic material backing material parts are connected by a metal connecting sheet 14, and each of the backing material parts is in contact with a connecting sheet bonding surface 16 and a workpiece to be welded thereon. A weld contact surface 18 and first and second side wall surfaces are provided, and the first side wall surface 20 is a laterally convex shape, and a first rising portion 24 rising upward for a predetermined length from one side edge of the connecting sheet bonding surface. , And a convex arc-shaped portion 26 extending to the workpiece contact surface, and the second side wall surface 22 is a concave shape on the side, and rises from the other side edge of the connecting sheet adhesion surface upward shorter than the first rising portion. A rising arc 28 and a concave arc-shaped portion 30 that extends to the workpiece contact surface at a radius equal to or greater than the radius of the convex arc-shaped portion. It is formed to extend in the direction.
[Selection] Figure 2

Description

本考案は、溶接用裏当て材に関し、特に、異形鉄筋の溶接の際に使用される溶接用裏当て材に関するものである。   The present invention relates to a welding backing material, and more particularly to a welding backing material used when welding deformed reinforcing bars.

異形鉄筋の溶接の際に使用される溶接用裏当て材としては、特許第3378136号公報に記載されたエンクローズ溶接用裏当材が知られている。
特許第3378136号の第1の考案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ものである。
As a backing material for welding used when welding deformed reinforcing bars, a backing material for enclosing welding described in Japanese Patent No. 3378136 is known.
The backing material for enclosing welding according to the first device of Japanese Patent No. 3378136 has a plurality of rod-shaped ceramic members and the ceramic members aligned in parallel to support adjacent ceramic members so that they can be bent. And is formed of a flexible member selected from the group consisting of a ceramic fiber, a ceramic band, and a ceramic net, and is fixed to the surface of the ceramic member. It is characterized by that.

特許第3378136号の第2の考案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ものである。   The backing material for enclosing welding according to the second device of Japanese Patent No. 3378136 has a plurality of rod-shaped ceramic members and the ceramic members aligned in parallel, and adjacent ceramic members are connected to each other so that they can be bent. It is characterized by the above-mentioned, and the said locking material is comprised with the metal wire.

特許第3378136号の第3の考案に係る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ものである。   The backing material for enclose welding according to the third device of Japanese Patent No. 3378136 is composed of a single rectangular plate-shaped ceramic member, and a plurality of surfaces extending in the width direction on one surface of the ceramic member. Parallel notches of the book are formed at a constant pitch in the longitudinal direction of the ceramic member, and a locking material is fixed in a direction perpendicular to the notches formed in the ceramic member. Sometimes the ceramic member is locked by the locking material, and the locking material is composed of one type of flexible member selected from the group consisting of ceramic fibers, ceramic bands and ceramic network, It is fixed to the surface.

特許第3378136号公報Japanese Patent No. 3378136

前記特許第3378136号の第1および第2の考案に係るエンクローズ溶接用裏当材においては、裏当て材の構成要素であるセラミック部材が棒状であったり、矩形板状であったりするため、当初から隣り合うセラミック部材同士の間に隙間ができ、また第3の考案に係るエンクローズ溶接用裏当材においては、鉄筋表面のカーブに合わせて折り曲げた時に、前記切欠きの部分から割れてしまい、この部分に亀裂ないしは隙間が出来、その結果、ロボット溶接をする場合、溶接抜けが生じ、ロボットが停止してしまうという問題がある。   In the backing material for enclose welding according to the first and second inventions of the above-mentioned Patent No. 3378136, because the ceramic member which is a constituent element of the backing material is rod-shaped or rectangular plate-shaped, A gap is formed between adjacent ceramic members from the beginning, and the enclosing welding backing material according to the third device is cracked from the notch portion when bent according to the curve of the reinforcing bar surface. As a result, there is a crack or gap in this portion. As a result, when robot welding is performed, there is a problem that welding is lost and the robot stops.

また、前記隙間または亀裂のため、固化した溶融金属の表面に凹凸が生じてしまい、表面加工等の後処理が必要な場合がある。
さらにまた、前記特許のエンクローズ溶接用裏当材においては、実際に使用するとき、繋止材が被溶接物である鉄筋側に来るので、異物が溶接部に入り込み、溶接欠陥となる恐れがある。さらに、固化した溶融金属の表面に繋止材痕が生じてしまい、この場合にも、表面加工等の後処理が必要な場合がある。
Further, due to the gaps or cracks, irregularities are generated on the surface of the solidified molten metal, and post-treatment such as surface processing may be necessary.
Furthermore, in the backing material for enclose welding of the patent, since the anchoring material comes to the reinforcing bar side to be welded when actually used, foreign matter may enter the welded portion and become a welding defect. is there. Furthermore, a sealing material trace is generated on the surface of the solidified molten metal. In this case as well, post-processing such as surface processing may be necessary.

そこで、本考案は、溶接抜けを防止でき、溶接部に異物が混入生ぜず、また固化した溶融金属の表面が滑らかで綺麗にすることができる溶接用裏当て材を提供することを目的とする。   Therefore, the present invention has an object to provide a welding backing material that can prevent welding failure, does not cause foreign matters to be mixed in the welded portion, and can make the surface of the solidified molten metal smooth and clean. .

前記目的は、本考案の次の(1)〜(13)の構成の溶接用裏当て材により達成される。
(1)
並列して並べられた複数本の棒状の無機質材料製裏当て材部品を金属製連結シートで連結してなる溶接用裏当て材であって、
前記裏当て材部品の各々が、その底部の前記連結シートが接着される連結シート接着面、その上部の被溶接物に接触する被溶接物接触面、および第1および第2側壁面を備え、
前記第1側壁面は、全体で見て、横に凸型をしており、前記連結シート接着面の一方の側縁から上方に所定長立ち上がる第1立ち上がり部、およびこの第1立ち上がり部の上端から前記被溶接物接触面まで延びる凸弧状部を備え、
前記第2側壁面は、全体で見て、横に凹型をしており、前記連結シート接着面の他方の側縁から上方に前記第1立ち上がり部よりは短く所定長立ち上がる第2立ち上がり部、およびこの第2立ち上がり部の上端から、前記凸弧状部の半径以上の半径で前記被溶接物接触面まで延びる凹弧状部を備えており、該溶接用裏当て材が平坦状態にあるときには、前記凹弧状部に隣接する裏当て材部品の凸弧状部が比較的浅く嵌合しており、
前記被溶接物接触面には、溶接継手部に溶融金属の余盛りを形成するための凹部が前記裏当て材部品の幅方向に延びるように形成されており、
前記連結シート側を外にして曲げられたときには、前記隣接する裏当て材部品の凸弧状部が前記凹弧状部により深く嵌合するようになっている
ことを特徴とする溶接用裏当て材。
(2)
前記凸弧状部と凹弧状部の半径が同じである請求項1の溶接用裏当て材。
(3)
被溶接物の表面の曲面に合わせて、曲げて使用される前記(1)または(2)の溶接用裏当て材。
(4)
前記裏当て材部品は、主成分としてSiO2とAl2O3を含有する材料で形成されている前記(1)〜(3)のいずれかの溶接用裏当て材。
(5)
前記裏当て材部品の材料が、鋳物用珪砂、礬土頁岩、カイヤナイト類、蝋石、ドロマイト、およびマグネサイト等の耐火物原料から選ばれた少なくとも一種の材料である前記(4)の溶接用裏当て材。
(6)
前記溶接用裏当て材の材料が、溶接用エンドタブ材または裏当て材製造不具合品または使用済み棄材の粉砕物である前記(1)〜(5)のいずれかの溶接用裏当て材。
(7)
溶接用裏当て材の材料が、製鉄・非鉄精錬・焼成炉等の炉材や湯路等の廃棄用耐火物の粉砕物である前記(1)〜(5)のいずれかの溶接用可撓性裏当て材。
(8)
溶接用裏当て材の材料が、フラックス粉である前記(1)〜(3)のいずれかの溶接用裏当て材。
(9)
前記金属シートが、アルミニウム製である前記(1)〜(8)のいずれかの溶接用裏当て材。
(10)
前記凹部は、側面形状が短軸を中心とした楕円弧状のものである請求項1の〜9のいずれかの溶接用裏当て材。
(11)
前記凹部の楕円弧の楕円度が、0.857〜0.95である前記(10)の溶接用裏当て材。
(12)
前記凹部の最大深さが、0.5〜2.0mmである前記(10)または(11)の溶接用裏当て材。
(13)
前記連結シートの両側部は、前記裏当て材部品の長手方向の両端部より張り出しており、溶接用裏当て材を溶接母材へ取り付ける際の取り付け部となっている前記(10)〜(12)のいずれかの溶接用裏当て材。
The object is achieved by a welding backing material having the following configurations (1) to (13) of the present invention.
(1)
Backing material for welding formed by connecting a plurality of rod-shaped inorganic material backing material parts arranged in parallel with a metal connecting sheet,
Each of the backing material parts includes a connecting sheet bonding surface to which the connecting sheet at the bottom is bonded, a workpiece contact surface to be in contact with a workpiece to be welded thereon, and first and second sidewall surfaces.
The first side wall surface has a laterally convex shape as a whole, a first rising portion rising upward for a predetermined length from one side edge of the connecting sheet bonding surface, and an upper end of the first rising portion A convex arc-shaped portion extending from the workpiece contact surface to the workpiece,
The second side wall surface has a concave shape laterally when viewed as a whole, a second rising portion that rises from the other side edge of the connecting sheet bonding surface upward for a predetermined length shorter than the first rising portion, and A concave arc-shaped portion extending from the upper end of the second rising portion to the workpiece contact surface with a radius equal to or larger than the radius of the convex arc-shaped portion; and when the welding backing is in a flat state, the concave portion The convex arc part of the backing material component adjacent to the arc part fits relatively shallowly,
On the workpiece contact surface, a concave portion for forming a molten metal surplus in the weld joint is formed so as to extend in the width direction of the backing material component,
A welding backing material, wherein when bent with the connecting sheet side outward, the convex arc-shaped portion of the adjacent backing material component is more closely fitted to the concave arc-shaped portion.
(2)
The welding backing material according to claim 1, wherein the convex arc-shaped portion and the concave arc-shaped portion have the same radius.
(3)
The welding backing material according to (1) or (2), which is used by being bent in accordance with the curved surface of the surface of the workpiece.
(4)
The backing material for welding according to any one of (1) to (3), wherein the backing material part is formed of a material containing SiO 2 and Al 2 O 3 as main components.
(5)
For the welding according to (4), the material of the backing material part is at least one material selected from refractory materials such as silica sand for casting, clay shale, kyanite, wax, dolomite, and magnesite. Backing material.
(6)
The welding backing material according to any one of (1) to (5), wherein the material of the welding backing material is a welded end tab material, a backing material production defect product, or a pulverized product of used waste material.
(7)
The welding flexible material according to any one of the above (1) to (5), wherein the material of the welding backing material is a pulverized product of a furnace refractory material such as a furnace material such as iron making, non-ferrous smelting and firing furnaces, and a hot water channel Sex backing material.
(8)
The welding backing material according to any one of (1) to (3), wherein the material of the welding backing material is flux powder.
(9)
The welding backing material according to any one of (1) to (8), wherein the metal sheet is made of aluminum.
(10)
The welding backing material according to any one of claims 1 to 9, wherein the concave portion has an elliptical arc shape whose side surface is centered on a minor axis.
(11)
The welding backing material according to (10), wherein the ellipticity of the elliptic arc of the recess is 0.857 to 0.95.
(12)
The welding backing material according to (10) or (11), wherein the maximum depth of the recess is 0.5 to 2.0 mm.
(13)
Both side portions of the connecting sheet protrude from both end portions in the longitudinal direction of the backing material part, and serve as attachment portions when the welding backing material is attached to the welding base material (10) to (12 ) Any welding backing material.

本考案の溶接用裏当て材においては、該溶接用裏当て材を構成する複数の裏当て材部品の第1および第2側壁面が凹弧状部とこれに嵌合する凸弧状部を有するので、隣り合う裏当て材部品の間の間隙が狭く、しかもストレートではなく、更には被溶接物である鉄筋の表面に合わせるべく曲げたとき、凸弧状部が更に深く凹弧状部に嵌合するので、前記間隙の幅が更に狭くなり、または全くなくなり、したがって、平坦状態で使用しても、曲面状態で使用しても溶接抜けを極力抑止できる。
本考案の溶接用裏当て材においては、また、前記被溶接物接触面に、側面形状が短軸を中心とした楕円弧状であって、前記裏当て材部品の幅方向に延びるように形成された凹部が設けられているので、溶接継手部における溶接面が、母材の外周面よりわずかに膨らんだ余盛り部となる理想的な形状になるとなる効果もある。
In the welding backing material of the present invention, the first and second side wall surfaces of the plurality of backing material parts constituting the welding backing material have the concave arc-shaped portion and the convex arc-shaped portion fitted to the concave arc-shaped portion. Since the gap between adjacent backing material parts is narrow and not straight, and when bent to match the surface of the rebar that is the work piece, the convex arc-shaped part fits deeper into the concave arc-shaped part. , The width of the gap is further narrowed or eliminated at all, and therefore it is possible to suppress the loss of welding as much as possible even when used in a flat state or in a curved state.
In the welding backing material of the present invention, the welded object contact surface is formed such that the side surface shape is an elliptical arc centered on the minor axis and extends in the width direction of the backing material component. Therefore, there is also an effect that the welded surface in the welded joint portion has an ideal shape that becomes a surplus portion slightly swollen from the outer peripheral surface of the base material.

更には、裏当て材部品同士を連結する連結シートは、溶接用裏当て材を使用するとき、被溶接物の表面とは反対側になり、通常は溶融金属に触れることがないので、溶接部に異物が混入することがない。   Furthermore, the connecting sheet that connects the backing material parts is the side opposite to the surface of the work piece when using the welding backing material, and usually does not touch the molten metal. Foreign matter is not mixed in.

本考案の実施形態による溶接用裏当て材の斜視図である。1 is a perspective view of a welding backing material according to an embodiment of the present invention. 図1に示した溶接用裏当て材を構成する裏当て材部品の隣り合った2つを代表して示した斜視図である。FIG. 2 is a perspective view representatively showing two adjacent backing material parts constituting the welding backing material shown in FIG. 1. 図2等に示した裏当て材部品の側面図である。It is a side view of the backing material part shown in FIG. (a)および(b)は、図1に示した溶接用裏当て材を異なる径の被溶接物である鉄筋に適用した例を示す正面図である。(A) And (b) is a front view which shows the example which applied the backing material for welding shown in FIG. 1 to the reinforcing bar which is a to-be-welded object of a different diameter.

以下、添付図面を参照しつつ、本考案の実施の形態による溶接用裏当て材10について説明する。
本考案の実施の形態による溶接用裏当て材10は、並列して並べられた複数本の棒状の無機質材料製裏当て材部品12を金属製連結シート14で連結してなるものである。前記連結シート14の両側部は、前記裏当て材部品の長手方向の両端部より張り出しており、溶接用裏当て材を溶接母材へ取り付ける際の取り付け部14aとなっていることが好ましい。すなわち、前記連結シート14の幅は、裏当て材部品12の長手方向両端部から該裏当て材部品の長さと同程度か、それ以上の長さを持っていることが好ましい。そして、その取り付け部14aの裏当て材側表面には、予め接着剤層が形成され、その上に剥離紙が貼り合わされていることが好ましい。
Hereinafter, a welding backing material 10 according to an embodiment of the present invention will be described with reference to the accompanying drawings.
A welding backing material 10 according to an embodiment of the present invention is formed by connecting a plurality of rod-shaped inorganic material backing material parts 12 arranged in parallel by a metal connecting sheet 14. It is preferable that both side portions of the connecting sheet 14 protrude from both end portions in the longitudinal direction of the backing material part, and serve as attachment portions 14a for attaching the welding backing material to the welding base material. That is, it is preferable that the width of the connecting sheet 14 be equal to or longer than the length of the backing material component from both longitudinal ends of the backing material component 12. And it is preferable that the adhesive layer is previously formed in the backing material side surface of the attaching part 14a, and the release paper is bonded together on it.

前記裏当て材部品12の各々は、その底部の前記連結シート14が接着される連結シート接着面16、その上部の被溶接物(図3に符号Mで示した)に接触する被溶接物接触面18、および第1および第2側壁面20および22を備えている。   Each of the backing material parts 12 is contacted with a connection sheet bonding surface 16 to which the connection sheet 14 at the bottom is bonded, and a workpiece to be welded that is in contact with a workpiece to be welded (indicated by symbol M in FIG. 3). A surface 18 and first and second sidewall surfaces 20 and 22 are provided.

前記第1側壁面20は、図2に良く示されているように、全体で見て、横に凸型をしており、前記連結シート接着面の一方の側縁から上方に所定長立ち上がる第1立ち上がり部24、およびこの第1立ち上がり部の上端から前記被溶接物接触面18まで延びる凸弧状部26を備えている。この凸弧状部26の直径は、前記第2側壁面は12の高さより大きく設定されている。この凸弧状部の弧の中心をC1で示した。   As shown in FIG. 2, the first side wall surface 20 has a laterally convex shape as a whole, and rises from a side edge of the connecting sheet bonding surface by a predetermined length. One rising portion 24 and a convex arc-shaped portion 26 extending from the upper end of the first rising portion to the workpiece contact surface 18 are provided. The diameter of the convex arc-shaped portion 26 is set larger than the height of 12 on the second side wall surface. The center of the arc of the convex arc-shaped portion is indicated by C1.

前記第2側壁面22は、全体で見て、横に凹型をしており、前記連結シート接着面16の他方の側縁から上方に前記第1立ち上がり部24よりは短く所定長立ち上がる第2立ち上がり部28、およびこの第2立ち上がり部の上端から、前記凸弧状部の半径以下の半径で前記被溶接物接触面18まで延びる凹弧状部30を備えている。この凹弧状部30の弧の半径と凸弧状部26の弧の半径は、互いに嵌合することが出来る限りにおいて、実質的に等しいことが望ましい。   The second side wall surface 22 has a concave shape on the side as a whole, and the second side wall surface 22 rises upward from the other side edge of the connecting sheet bonding surface 16 for a predetermined length shorter than the first rising portion 24. And a concave arc-shaped portion 30 extending from the upper end of the portion 28 and the second rising portion to the workpiece contact surface 18 with a radius equal to or smaller than the radius of the convex arc-shaped portion. It is desirable that the radius of the arc of the concave arc-shaped portion 30 and the radius of the arc of the convex arc-shaped portion 26 are substantially equal as long as they can be fitted to each other.

これら凸弧状部26と凹弧状部30は、該溶接用裏当て材10が図1に示した平坦状態にあるときには、前記凹弧状部30に隣接する裏当て材部品12の凸弧状部26が比較的浅く嵌合しており、図4に示したように前記連結シート14側を外にして曲げられたときには、前記隣接する裏当て材部品12の凸弧状部20が前記凹弧状部22により深く嵌合するようになっている。   When the welding backing material 10 is in the flat state shown in FIG. 1, the convex arc-shaped portion 26 and the concave arc-shaped portion 30 are formed so that the convex arc-shaped portion 26 of the backing material component 12 adjacent to the concave arc-shaped portion 30. As shown in FIG. 4, when the connecting sheet 14 side is bent and the bent portion 20 of the adjacent backing material part 12 is bent by the concave arc-shaped portion 22. It is designed to fit deeply.

前記被溶接物接触面18には、図3に示したように、側面形状が短軸を中心とした楕円弧状の凹部32が前記裏当て材部品12の幅方向に延びるように形成されている。前記凹部32の楕円弧の扁平率は、0.857〜0.95であることが好ましい。凹部32は、円弧状や、両側が円弧もしくは楕円弧であって、中央部が平坦なものや、矩形状のものであってもよい。   As shown in FIG. 3, the welded object contact surface 18 is formed with an elliptical arc-shaped recess 32 whose side surface shape is centered on the minor axis so as to extend in the width direction of the backing material component 12. . The oblateness of the elliptic arc of the recess 32 is preferably 0.857 to 0.95. The recess 32 may be arcuate, arcuate or elliptical on both sides, flat at the center, or rectangular.

前記凹部32の楕円弧の短軸は、前記裏当て材部品12の幅方向中心線位置にあることが好ましい。また、前記凹部32の最大深さAは、0.5〜2.0mmであることが好ましい。   It is preferable that the minor axis of the elliptical arc of the recess 32 is at the center line position in the width direction of the backing material part 12. Moreover, it is preferable that the maximum depth A of the said recessed part 32 is 0.5-2.0 mm.

本溶接用裏当て材10は、図4に示したように被溶接物の表面の曲面に合わせて、曲げて使用される。図4の(a)の被溶接物の鉄筋M1は、直径が22mmの鉄筋であり、図4の(b)の被溶接物の鉄筋M2は、直径が36mmの鉄筋である。図4の(a)と(b)から、小さい半径で曲げられた方が、凸弧状部20がより深く凹弧状部22に嵌合(密接)していることが分かる。   As shown in FIG. 4, the main welding backing material 10 is bent and used in accordance with the curved surface of the surface of the workpiece. 4A is a reinforcing bar having a diameter of 22 mm, and the reinforcing bar M2 of the welding object in FIG. 4B is a reinforcing bar having a diameter of 36 mm. 4 (a) and 4 (b), it can be seen that the convex arc-shaped portion 20 is fitted (closely) to the concave arc-shaped portion 22 more deeply when bent with a small radius.

前記裏当て材部品12は、主成分としてSiO2とAl2O3を含有する材料で形成されていることが好ましい。
前記裏当て材部品の材料は、鋳物用珪砂、礬土頁岩、カイヤナイト類、蝋石、ドロマイト、およびマグネサイト等の耐火物原料から選ばれた少なくとも一種の材料であることが望ましい。
The backing material part 12 is preferably formed of a material containing SiO 2 and Al 2 O 3 as main components.
The material of the backing material part is desirably at least one material selected from refractory materials such as silica sand for casting, clay shale, kyanite, wax, dolomite, and magnesite.

上記裏当て材部品の粉体の材料は、また、溶接用エンドタブ材または裏当て材製造不具合品または使用済み棄材の粉砕物であることが特に望ましい。
上記裏当て材部品の材料は、更にまた、製鉄・非鉄精錬・焼成炉等の炉材や湯路等の廃棄用耐火物の粉砕物であることが望ましい。これにより、産業廃棄物の再利用が図れ、廃棄コスト等を節約できる。
上記裏当て材部品の材料は、フラックス粉とすることもできる。
前記金属シートは、アルミニウム製であることが好ましい。
It is particularly desirable that the material of the powder of the backing material part is a welded end tab material or a backing material manufacturing defect product or a pulverized product of used waste material.
It is desirable that the material of the above-mentioned backing material part is further a ground material of a waste refractory such as a furnace material such as iron making, non-ferrous smelting and firing furnaces, and a water channel. As a result, industrial waste can be reused, and disposal costs can be saved.
The material of the backing material component may be flux powder.
The metal sheet is preferably made of aluminum.

以上説明した本考案の実施の形態による溶接用裏当て材においては、該溶接用裏当て材を構成する複数の裏当て材部品の第1および第2側壁面が凹弧状部とこれに嵌合する凸弧状部を有するので、隣り合う裏当て材部品の間の間隙が狭く、しかもストレートではなく、更には被溶接物である鉄筋の表面に合わせるべく曲げたとき、凸弧状部が更に深く凹弧状部に嵌合するので、前記間隙の幅が更に狭くなり、または全くなくなり、したがって、平坦状態で使用しても、曲面状態で使用しても溶接抜けを極力抑止できる。
更には、裏当て材部品同士を連結する連結シートは、溶接用裏当て材を使用するとき、被溶接物の表面とは反対側になり、通常は溶融金属に触れることがないので、溶接部に異物が混入することがない。
In the welding backing material according to the embodiment of the present invention described above, the first and second side wall surfaces of the plurality of backing material parts constituting the welding backing material are fitted to the concave arc-shaped portion. Since the convex arc-shaped part is narrow, the gap between the adjacent backing material parts is narrow, not straight, and when bent to match the surface of the rebar as the work piece, the convex arc-shaped part is more deeply concave. Since it fits into the arcuate portion, the width of the gap is further narrowed or eliminated at all, and therefore, it is possible to suppress weld loss as much as possible even when used in a flat state or a curved surface state.
Furthermore, the connecting sheet that connects the backing material parts is the side opposite to the surface of the work piece when using the welding backing material, and usually does not touch the molten metal. Foreign matter is not mixed in.

10 溶接用裏当て材
12 裏当て材部品
14 連結シート
16 連結シート接着面
18 被溶接物接触面
20 第1側壁面
22 第2側壁面
24 第1立ち上がり部
26 凸弧状部
28 第2立ち上がり部
30 凹弧状部
32 凹部
M1 被溶接物
M2 被溶接物
DESCRIPTION OF SYMBOLS 10 Backing material for welding 12 Backing material components 14 Connection sheet 16 Connection sheet adhesion surface 18 Workpiece contact surface 20 First side wall surface 22 Second side wall surface 24 First rising portion 26 Convex arc portion 28 Second rising portion 30 Concave arc part 32 Concave part M1 Workpiece M2 Workpiece

Claims (13)

並列して並べられた複数本の棒状の無機質材料製裏当て材部品を金属製連結シートで連結してなる溶接用裏当て材であって、
前記裏当て材部品の各々が、その底部の前記連結シートが接着される連結シート接着面、その上部の被溶接物に接触する被溶接物接触面、および第1および第2側壁面を備え、
前記第1側壁面は、全体で見て、横に凸型をしており、前記連結シート接着面の一方の側縁から上方に所定長立ち上がる第1立ち上がり部、およびこの第1立ち上がり部の上端から前記被溶接物接触面まで延びる凸弧状部を備え、
前記第2側壁面は、全体で見て、横に凹型をしており、前記連結シート接着面の他方の側縁から上方に前記第1立ち上がり部よりは短く所定長立ち上がる第2立ち上がり部、およびこの第2立ち上がり部の上端から、前記凸弧状部の半径以上の半径で前記被溶接物接触面まで延びる凹弧状部を備えており、該溶接用裏当て材が平坦状態にあるときには、前記凹弧状部に隣接する裏当て材部品の凸弧状部が比較的浅く嵌合しており、
前記被溶接物接触面には、溶接継手部に溶融金属の余盛りを形成するための凹部が前記裏当て材部品の幅方向に延びるように形成されており、
前記連結シート側を外にして曲げられたときには、前記隣接する裏当て材部品の凸弧状部が前記凹弧状部により深く嵌合するようになっている
ことを特徴とする溶接用裏当て材。
Backing material for welding formed by connecting a plurality of rod-shaped inorganic material backing material parts arranged in parallel with a metal connecting sheet,
Each of the backing material parts includes a connecting sheet bonding surface to which the connecting sheet at the bottom is bonded, a workpiece contact surface to be in contact with a workpiece to be welded thereon, and first and second sidewall surfaces.
The first side wall surface has a laterally convex shape as a whole, a first rising portion rising upward for a predetermined length from one side edge of the connecting sheet bonding surface, and an upper end of the first rising portion A convex arc-shaped portion extending from the workpiece contact surface to the workpiece,
The second side wall surface has a concave shape laterally when viewed as a whole, a second rising portion that rises from the other side edge of the connecting sheet bonding surface upward for a predetermined length shorter than the first rising portion, and A concave arc-shaped portion extending from the upper end of the second rising portion to the workpiece contact surface with a radius equal to or larger than the radius of the convex arc-shaped portion; and when the welding backing is in a flat state, the concave portion The convex arc part of the backing material component adjacent to the arc part fits relatively shallowly,
On the workpiece contact surface, a concave portion for forming a molten metal surplus in the weld joint is formed so as to extend in the width direction of the backing material component,
A welding backing material, wherein when bent with the connecting sheet side outward, the convex arc-shaped portion of the adjacent backing material component is more closely fitted to the concave arc-shaped portion.
前記凸弧状部と凹弧状部の半径が同じである請求項1の溶接用裏当て材。   The welding backing material according to claim 1, wherein the convex arc-shaped portion and the concave arc-shaped portion have the same radius. 被溶接物の表面の曲面に合わせて、曲げて使用される請求項1または2の溶接用裏当て材。   The welding backing material according to claim 1 or 2, wherein the welding backing material is bent according to the curved surface of the surface of the workpiece. 前記裏当て材部品は、主成分としてSiO2とAl2O3を含有する材料で形成されている請求項1〜3のいずれかの溶接用裏当て材。 The backing component may be any welding backing material according to claim 1 to 3, which is formed of a material containing SiO 2 and Al 2 O 3 as a main component. 前記裏当て材部品の材料が、鋳物用珪砂、礬土頁岩、カイヤナイト類、蝋石、ドロマイト、およびマグネサイト等の耐火物原料から選ばれた少なくとも一種の材料である請求項4の溶接用裏当て材。   The welding back according to claim 4, wherein the material of the backing material part is at least one material selected from refractory raw materials such as silica sand for casting, clay shale, kyanite, wax, dolomite, and magnesite. Batting material. 前記溶接用裏当て材の材料が、溶接用エンドタブ材または裏当て材製造不具合品または使用済み棄材の粉砕物である請求項1〜5のいずれかの溶接用裏当て材。   The welding backing material according to any one of claims 1 to 5, wherein the material of the welding backing material is a welded end tab material, a backing material production defect product, or a pulverized product of used waste material. 溶接用裏当て材の材料が、製鉄・非鉄精錬・焼成炉等の炉材や湯路等の廃棄用耐火物の粉砕物である請求項1〜5のいずれかの溶接用可撓性裏当て材。   The flexible backing material for welding according to any one of claims 1 to 5, wherein the material of the welding backing material is a pulverized material of a waste refractory material such as a furnace material such as iron making, non-ferrous smelting and firing furnaces, and a hot water channel. Wood. 溶接用裏当て材の材料が、フラックス粉である請求項1〜3のいずれかの溶接用裏当て材。   The welding backing material according to any one of claims 1 to 3, wherein the welding backing material is flux powder. 前記金属シートが、アルミニウム製である前記請求項1〜8のいずれかの溶接用裏当て材。   The welding backing material according to any one of claims 1 to 8, wherein the metal sheet is made of aluminum. 前記凹部は、側面形状が短軸を中心とした楕円弧状のものである請求項1の〜9のいずれかの溶接用裏当て材。   The welding backing material according to any one of claims 1 to 9, wherein the concave portion has an elliptical arc shape whose side surface is centered on a minor axis. 前記凹部の楕円弧の楕円度が、0.857〜0.95である請求項10の溶接用裏当て材。   The welding backing material according to claim 10, wherein the ellipticity of the elliptical arc of the recess is 0.857 to 0.95. 前記凹部の最大深さが、0.5〜2.0mmである請求項10または12の溶接用裏当て材。   The welding backing material according to claim 10 or 12, wherein the maximum depth of the recess is 0.5 to 2.0 mm. 前記連結シートの両側部は、前記裏当て材部品の長手方向の両端部より張り出しており、溶接用裏当て材を溶接母材へ取り付ける際の取り付け部となっている請求項10〜12のいずれかの溶接用裏当て材。   Either side part of the said connection sheet | seat is overhanging from the both ends of the longitudinal direction of the said backing material component, It is any attachment part at the time of attaching the backing material for welding to a welding preform | base_material. Backing material for welding.
JP2014001961U 2013-08-20 2014-04-15 Backing material for welding Expired - Lifetime JP3192909U (en)

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CN201480001368.8A CN104661790B (en) 2013-08-20 2014-07-23 Welding backing plate
KR1020147032983A KR101740107B1 (en) 2013-08-20 2014-07-23 Backing material for welding
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