JPH0222159Y2 - - Google Patents
Info
- Publication number
- JPH0222159Y2 JPH0222159Y2 JP15641284U JP15641284U JPH0222159Y2 JP H0222159 Y2 JPH0222159 Y2 JP H0222159Y2 JP 15641284 U JP15641284 U JP 15641284U JP 15641284 U JP15641284 U JP 15641284U JP H0222159 Y2 JPH0222159 Y2 JP H0222159Y2
- Authority
- JP
- Japan
- Prior art keywords
- backing material
- welding
- solid material
- slag
- 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
Links
- 239000000463 material Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 16
- 239000011343 solid material Substances 0.000 claims description 11
- 239000002893 slag Substances 0.000 description 12
- 239000011324 bead Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は各種の構造物の片面溶接に用いる裏当
材の形状に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the shape of a backing material used for single-sided welding of various structures.
(従来技術とその問題点)
造船、建築、橋梁等に於て、溶接によつて構造
物を造る際に、両面溶接が不可能な場合が多い。
このために又は溶接工程の手間を省く目的で、片
面溶接が広く実施されているが、この片面溶接に
は裏波ビードを形成させるために、裏当材が使用
される。(Prior art and its problems) When building structures by welding in shipbuilding, architecture, bridges, etc., it is often impossible to weld both sides.
For this reason or for the purpose of saving time and effort in the welding process, single-sided welding is widely practiced, and a backing material is used in this single-sided welding to form an underwave bead.
従来の片面溶接用裏当材は、例えば特開昭59−
61594号公報に開示され裏当材のように、固形材
の中央長手方向にスラグポケツトを設けた形状の
裏当材が一般的に使用されている。このスラグポ
ケツトは健全な裏ビードを得る上で重要である
が、溶融スラグが溶接進行方向に流れ易くスラグ
本来の機能の低下をもたらすという欠点もあつ
た。 Conventional backing material for single-sided welding is, for example, disclosed in Japanese Patent Application Laid-open No. 1983-
Like the backing material disclosed in Japanese Patent No. 61594, a backing material having a shape in which a slug pocket is provided in the central longitudinal direction of a solid material is generally used. Although this slag pocket is important in obtaining a healthy back bead, it also has the disadvantage that molten slag tends to flow in the direction of welding progress, resulting in a deterioration of the original function of the slag.
(問題点を解決するための手段・作用)
本考案は、上記従来の裏当材の問題点を解消す
ることを目的とするものであり、その要旨とする
ところは固形材上面の中央長手方向に凹設したス
ラグポケツトに間隔をあけて凸起を設けてなる片
面溶接用裏当材にある。以下本考案を図面により
説明する。(Means/actions for solving the problems) The present invention aims to solve the problems of the conventional backing material mentioned above, and its gist is to This backing material for single-sided welding has protrusions provided at intervals on a slag pocket recessed in the slag pocket. The present invention will be explained below with reference to the drawings.
第1図は本考案の一具体例の全体斜視図、第2
a図はその使用状態図、第2b図は第2a図の
IB−IB線図である。 Fig. 1 is an overall perspective view of one specific example of the present invention;
Figure a is a diagram of its usage state, and Figure 2b is a diagram of Figure 2a.
It is an IB-IB diagram.
1はセラミツク製耐熱タイル等の固形材で、矩
形状の断面を有し、上面(開先に接する面)中央
長手方向にスラグポケツト4を設けている。2は
固形材1を被溶接材5の開先6裏面に取り付ける
ための可撓性耐熱材、例えばAl箔からなる裏当
材取付用テープであり、固形材1よりも広幅に構
成される。該テープ2は一面に接着剤を塗布さ
れ、その塗布面中央長手方向に、固形材1を連続
的に並べて貼付し、両端長手方向に裏当材使用時
にはくりするはくりテープ3を貼付している。 1 is a solid material such as a heat-resistant ceramic tile, which has a rectangular cross section, and has a slug pocket 4 in the longitudinal direction of the center of the upper surface (the surface in contact with the groove). Reference numeral 2 designates a tape for attaching a backing material made of a flexible heat-resistant material such as Al foil for attaching the solid material 1 to the back surface of the groove 6 of the material to be welded 5, and is configured to be wider than the solid material 1. The tape 2 is coated with adhesive on one side, the solid material 1 is continuously lined up and pasted in the longitudinal direction at the center of the coated surface, and the peeling tape 3 that is peeled off when using a backing material is pasted on both ends in the longitudinal direction. There is.
以上は従来公知の片面溶接用裏当材の態様であ
り、本考案の裏当材ではさらに固形材1の上面に
設けたスラグポケツト4の一部に凸起7を形成し
ており、裏当材全体からみてスラグポケツト4の
長手方向に所定間隔で凸起7が並ぶように構成し
ている。この凸起7は第2a図、第2b図から明
らかなように溶接時(例えばフラツクス入りワイ
ヤによる片面溶接)にスラグポケツトを長手方向
に流動する溶融スラグの堰として機能し、その結
果固形材1と裏ビード間に均一にスラグ層が形成
され、光沢のある均一な裏ビードが形成される。
ただし凸起7の厚さは溶接熱(数千℃)により溶
融する程度の厚さとして、裏ビード余盛形状に影
響を与えないようにする。すなわち凸起7の厚さ
は、流動する溶融スラグの堰止めとして機能する
程度の厚さを必要とし、かつ裏ビード形状に影響
を与えない程度の厚さに抑える。この厚さは適宜
溶接の種類等により決定すべきで、一律に決めら
れない。 The above is an aspect of a conventionally known backing material for single-sided welding, and the backing material of the present invention further has a protrusion 7 formed on a part of the slug pocket 4 provided on the upper surface of the solid material 1. The protrusions 7 are arranged at predetermined intervals in the longitudinal direction of the slug pocket 4 when viewed from the entire material. As is clear from FIGS. 2a and 2b, this protrusion 7 functions as a weir for the molten slag flowing longitudinally through the slag pocket during welding (for example, single-sided welding with flux-cored wire), and as a result, the solid material 1 A slag layer is formed uniformly between the back bead and the back bead, and a glossy and uniform back bead is formed.
However, the thickness of the protrusion 7 should be such that it will be melted by welding heat (several thousand degrees centigrade) so as not to affect the shape of the back bead reinforcement. That is, the thickness of the protrusions 7 needs to be thick enough to function as a dam for the flowing molten slag, and suppressed to a thickness that does not affect the shape of the back bead. This thickness should be appropriately determined depending on the type of welding, etc., and cannot be determined uniformly.
なお、上記図示の例では固形材を短尺のタイル
状固形材とし、裏当材取付用テープ上に連続的に
並べた態様としたが、長尺一体の固形材のスラグ
ポケツトに上記の如く凸起を設けた態様としても
よいことはもちろんである。 In addition, in the example shown above, the solid material is a short tile-shaped solid material, which is arranged continuously on the tape for attaching the backing material. Of course, it is also possible to adopt a mode in which a rise is provided.
(考案の効果)
以上のように、本考案の片面溶接用裏当材によ
れば、溶接時に溶融スラグの過度の流動を抑え
て、溶融スラグ本来の機能を発輝せしめるので光
沢のある均一な裏ビードを形成する上で非常に有
効である。(Effects of the invention) As described above, according to the backing material for single-sided welding of the present invention, excessive flow of molten slag is suppressed during welding, and the original function of molten slag shines, resulting in a glossy and uniform welding material. It is very effective in forming the back bead.
第1図は本考案の一具体例を示す全体斜視図、
第2a図は本考案の裏当材の使用状態図、第2b
図はそのIB−IB線図である。
1……固形材、4……スラグポケツト、7……
凸起。
FIG. 1 is an overall perspective view showing a specific example of the present invention;
Figure 2a is a usage state diagram of the backing material of the present invention, Figure 2b
The figure is the IB-IB diagram. 1...Solid material, 4...Slag pocket, 7...
Convexity.
Claims (1)
ケツトに間隔をあけて凸起を設けてなる片面溶接
用裏当材。 A backing material for single-sided welding consisting of a slug pocket recessed in the longitudinal direction of the center of the upper surface of a solid material, and protrusions provided at intervals.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15641284U JPH0222159Y2 (en) | 1984-10-18 | 1984-10-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15641284U JPH0222159Y2 (en) | 1984-10-18 | 1984-10-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6172391U JPS6172391U (en) | 1986-05-16 |
JPH0222159Y2 true JPH0222159Y2 (en) | 1990-06-14 |
Family
ID=30714416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15641284U Expired JPH0222159Y2 (en) | 1984-10-18 | 1984-10-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0222159Y2 (en) |
-
1984
- 1984-10-18 JP JP15641284U patent/JPH0222159Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6172391U (en) | 1986-05-16 |
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