JP2011115843A - Welding backing metal - Google Patents
Welding backing metal Download PDFInfo
- Publication number
- JP2011115843A JP2011115843A JP2009291364A JP2009291364A JP2011115843A JP 2011115843 A JP2011115843 A JP 2011115843A JP 2009291364 A JP2009291364 A JP 2009291364A JP 2009291364 A JP2009291364 A JP 2009291364A JP 2011115843 A JP2011115843 A JP 2011115843A
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- backing metal
- backing
- welding
- metal
- bending
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- 239000002184 metal Substances 0.000 title claims abstract description 70
- 238000003466 welding Methods 0.000 title claims abstract description 23
- 238000005452 bending Methods 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
Description
本発明は、構造物の骨組みに用いる鉄骨を溶接するときにコラムに使用する溶接用裏当金(以下単に裏当金とする。)に関するものである。The present invention relates to a welding backing metal (hereinafter simply referred to as backing metal) used for a column when welding a steel frame used for a structural framework.
近年、作業の合理化が求められる中、従来技術の折り曲げ加工による裏当金15は矩形枠状側面8aの曲げ近傍に八箇所の突起部分10aが突出していて裏当金取り付け作業者が片側面の四箇所の突起部分10aを削り取って平らにする作業をしている。
これまでに、端部内周縁に傾斜面を備えたことを特徴とする裏当金16が開発されている。(例えば、特許文献1参照。)
端部内周縁に傾斜面を備えた構造の裏当金16は、継手管材内部へ挿入した溶接棒24の先端の視認ができるように構成した特徴を有している。In recent years, rationalization of work has been demanded, and the backing metal 15 by the bending process of the prior art has eight protruding portions 10a projecting in the vicinity of the bending of the rectangular frame-shaped side surface 8a, so The four projecting portions 10a are scraped and flattened.
Up to now, a backing metal 16 characterized by having an inclined surface on the inner periphery of the end has been developed. (For example, refer to
The backing metal 16 having a structure having an inclined surface at the inner peripheral edge of the end portion has a feature that the tip of the welding rod 24 inserted into the joint pipe material can be visually recognized.
一方、建築技術の向上と建築資材の省力化から薄板で形成される小径のコラムの需要が増加し、それに伴って精度の高い曲げRの小さな裏当金が求められるようになってきた。
従来技術の折り曲げ加工の裏当金15は、図4に示すように矩形枠状側面8aの曲げ近傍の四箇所の突起部分10aを放置したままダイヤフラム11と組立て溶接すると裏当金15とダイヤフラム11の間の隙間が原因で本溶接の際に溶接欠陥が発生しやすいためその付近を削り取って平らにする作業をしなければならないという問題点があった。
また、四箇所の突起部分10aを放置したままダイヤフラム11と組立て溶接すると組立ての寸法精度が悪くなる問題点があった。
さらに、裏当金R形状部近傍の形状変化が大きく前記四箇所の突起部分10a付近を削りすぎるなどの削り方によっては本溶接での溶接欠陥の原因となる場合があった。
なお、端部内周縁に傾斜面を備えた構造の特許文献1の裏当金16は、本発明とは使用目的が異なっていて内周縁に傾斜面を備えた端部側にダイヤフラム11と当接する平面の部分がなく形状も異なっている。そのため、内周縁に傾斜面を備えた端部とダイヤフラム11を組立て溶接する方法では本溶接をすると溶融金属の抜け落ちが発生してしまうため使用できない。
一方、薄板で小径なコラムに対する9mmの肉厚の裏当金は折り曲げ加工に限界があるため製造が難しかった。As shown in FIG. 4, the backing metal 15 of the bending process of the prior art is assembled and welded to the diaphragm 11 while leaving the four protruding portions 10a in the vicinity of the bending of the rectangular frame-shaped side surface 8a, and the backing metal 15 and the diaphragm 11 are welded. Due to the gaps between the two, welding defects are likely to occur during the main welding, and there has been a problem in that it has to be scraped off and flattened.
In addition, there is a problem that the dimensional accuracy of the assembly is deteriorated if the four protrusions 10a are left to be assembled and welded to the diaphragm 11.
Further, the shape change in the vicinity of the backing metal R-shaped portion is large, and depending on how to cut the vicinity of the four protruding portions 10a, it may cause a welding defect in the main welding.
The backing metal 16 of
On the other hand, a 9 mm-thick backing metal for a thin plate with a small diameter column is difficult to manufacture due to limitations in bending.
本発明は、上記従来技術の問題点を解決することを課題とする。具体的には、折り曲げ近傍の四箇所の突起部分を削り取って平らにする作業を省くことのできる裏当金を提供することを課題とする。さらに、折り曲げ精度の高い裏当金を提供することを課題とする。 An object of the present invention is to solve the above-described problems of the prior art. Specifically, it is an object of the present invention to provide a backing metal capable of omitting the work of scraping and flattening the four protruding portions in the vicinity of the bending. Furthermore, it is an object to provide a backing metal with high bending accuracy.
本発明の裏当金は、矩形枠状を形成してコラムの内側面に配設され、帯状の金属板を一つ若しくは同形状の複数の部材からなる矩形枠状に折り曲げて形成される。前記コラムの一端面より突出して溶接される前記裏当金の一端部内側面に周方向に沿って傾斜する傾斜面と、この傾斜面と隣り合ってダイヤフラムと当接し溶接される前記裏当金の一端面と、この一端面から突出しない四箇所の折り曲げ近傍の突起部分と、を有してなることを特徴とし、裏当金の折り曲げ近傍の四箇所の突起部分が突出していないためその付近を削り取って平らにする作業をせずに組立て溶接ができる。
また、前記裏当金の他端部内側面に周方向に沿って傾斜する傾斜面を有してなることを特徴とする裏当金は、安定して曲げRを小さく加工することができる。The backing metal of the present invention forms a rectangular frame shape and is disposed on the inner side surface of the column, and is formed by bending a belt-shaped metal plate into a rectangular frame shape made of one or a plurality of members having the same shape. An inclined surface inclined along the circumferential direction on an inner surface of one end portion of the backing metal that protrudes from one end surface of the column and is welded, and the backing metal that is in contact with and welded to the diaphragm adjacent to the inclined surface. It is characterized in that it has one end surface and four protruding portions in the vicinity of the bending that do not protrude from the one end surface, and since the four protruding portions in the vicinity of the bending of the backing metal do not protrude, Assembly welding is possible without the work of scraping and flattening.
Further, the backing metal having an inclined surface inclined along the circumferential direction on the inner side surface of the other end portion of the backing metal can stably process the bending R to be small.
本発明の裏当金は、一端部内側面に周方向に沿って傾斜する傾斜面を設けた従来技術の折り曲げ加工されただけの構造のものであって、裏当金の折り曲げ近傍の四箇所の突起部分を削り取って平らにする作業をせずに効率よく従来と同様の方法で簡単にダイヤフラムと組立て溶接ができる。 The backing metal of the present invention has a structure that is simply bent according to the prior art in which an inclined surface that is inclined along the circumferential direction is provided on the inner side surface of one end, and is provided at four locations in the vicinity of the folding of the backing metal. The diaphragm can be assembled and welded easily and efficiently in the same manner as before without having to scrape and flatten the protruding portion.
図面を使って、本発明の実施の形態を説明する。
図1は、本発明の裏当金1で、矩形枠状を構成し裏当金1の一端部3の内側面5に周方向に沿って傾斜する傾斜面9とそれと隣り合う裏当金一端面7とこの裏当金一端面7とほぼ平面上にある四箇所の折り曲げ近傍の突起部分10とが設けられるように帯状の金属板を折り曲げ加工されている。
図2に示すようにこの裏当金1は四箇所の折り曲げ近傍を削る作業をせずにそのままコラム12に収容され、前記内側面5に周方向に沿って傾斜する傾斜面9が設けられている裏当金1の一端部3をコラム一端面14より突出させて組立て溶接され、裏当金一端面7を図3に示すようにダイヤフラム11と当接させ組立て溶接される。
そして、溶接に十分な肉厚が確保され、隙間もなく組立て溶接されて本発明の裏当金1を間に挟んだコラム12とダイヤフラム11の本溶接時に溶融金属の抜け落ちがしないようになっている。Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a
As shown in FIG. 2, the
A sufficient thickness is ensured for welding, and assembly and welding are performed without a gap so that the molten metal does not fall off during the main welding of the column 12 and the diaphragm 11 with the
なお、図5及び図6に示すように裏当金の一端部の内側面に周方向に沿って傾斜する傾斜面は平面に限定されるものではなく裏当金17及び裏当金18のように断面が同形状で周方向に連続してできる凹面や凸面でもよく、図7に示す裏当金19のように切欠き状の形状でも目的を果たすことができる。
また、図8に示すように裏当金20の傾斜面9dと一端面7dの区切りがはっきりしていなくてもよい。As shown in FIGS. 5 and 6, the inclined surface inclined along the circumferential direction on the inner surface of one end portion of the backing metal is not limited to a flat surface, but like the backing metal 17 and the backing metal 18. Further, it may be a concave surface or a convex surface having the same cross section and continuously formed in the circumferential direction, and a notched shape such as a
Moreover, as shown in FIG. 8, the division | segmentation of the inclined surface 9d of the
本発明の両端部内側面に周方向に沿って傾斜する傾斜面を有してなることを特徴とする図9及び図10の裏当金21や裏当金22の形状は、従来と同様の方法で無理がなく曲げRの小さな裏当金に折り曲げ加工されている。 The shape of the backing metal 21 and the
1、溶接用裏当金
2、本体
3、裏当金一端部
3a、裏当金一端部
3b、裏当金一端部
3c、裏当金一端部
3d、裏当金一端部
3e、裏当金一端部
3f、裏当金一端部
4、裏当金他端部
5、裏当金内側面
5a、裏当金内側面
5b、裏当金内側面
5c、裏当金内側面
5d、裏当金内側面
5e、裏当金内側面
5f、裏当金内側面
6、裏当金外側面
7、裏当金一端面
7d、裏当金一端面
8、裏当金側面
8a、裏当金側面
9、傾斜面
9a、傾斜面
9b、傾斜面
9c、傾斜面
9d、傾斜面
9e、傾斜面
9f、傾斜面
10、裏当金突起部分
10a、裏当金突起部分
11、ダイヤフラム
12、コラム
13、コラム内側面
14、コラム一端面
15、従来技術の折り曲げ加工の裏当金
16、従来技術の裏当金
23、傾斜面
24、溶接棒DESCRIPTION OF
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2009291364A JP5600824B2 (en) | 2009-12-04 | 2009-12-04 | Welding backing |
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JP2009291364A JP5600824B2 (en) | 2009-12-04 | 2009-12-04 | Welding backing |
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JP2011115843A true JP2011115843A (en) | 2011-06-16 |
JP5600824B2 JP5600824B2 (en) | 2014-10-08 |
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JP2009291364A Expired - Fee Related JP5600824B2 (en) | 2009-12-04 | 2009-12-04 | Welding backing |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111037198A (en) * | 2019-10-29 | 2020-04-21 | 坚纳森(青岛)机械有限公司 | Membrane frame assembly welding machine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63157497U (en) * | 1987-03-27 | 1988-10-14 | ||
JPH0220327Y2 (en) * | 1985-09-12 | 1990-06-04 | ||
JPH07132323A (en) * | 1993-11-10 | 1995-05-23 | Nippon Kokan Raito Steel Kk | Flat steel sheet for bending and bending method therefor |
JP2001353596A (en) * | 2000-06-13 | 2001-12-25 | Shigeru Hagiwara | Backing strip for welding |
JP2005186102A (en) * | 2003-12-25 | 2005-07-14 | Furusato Kogyo Kk | Backing strip for welding, method of producing the same, and column welding method using the backing strip |
-
2009
- 2009-12-04 JP JP2009291364A patent/JP5600824B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0220327Y2 (en) * | 1985-09-12 | 1990-06-04 | ||
JPS63157497U (en) * | 1987-03-27 | 1988-10-14 | ||
JPH07132323A (en) * | 1993-11-10 | 1995-05-23 | Nippon Kokan Raito Steel Kk | Flat steel sheet for bending and bending method therefor |
JP2001353596A (en) * | 2000-06-13 | 2001-12-25 | Shigeru Hagiwara | Backing strip for welding |
JP2005186102A (en) * | 2003-12-25 | 2005-07-14 | Furusato Kogyo Kk | Backing strip for welding, method of producing the same, and column welding method using the backing strip |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111037198A (en) * | 2019-10-29 | 2020-04-21 | 坚纳森(青岛)机械有限公司 | Membrane frame assembly welding machine |
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