JPH066230B2 - T-type joint Uranami welding - Google Patents
T-type joint Uranami weldingInfo
- Publication number
- JPH066230B2 JPH066230B2 JP60059596A JP5959685A JPH066230B2 JP H066230 B2 JPH066230 B2 JP H066230B2 JP 60059596 A JP60059596 A JP 60059596A JP 5959685 A JP5959685 A JP 5959685A JP H066230 B2 JPH066230 B2 JP H066230B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- welded
- backing material
- type joint
- aluminum
- 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 - Lifetime
Links
Landscapes
- Arc Welding In General (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、アルミニユム又はアルミニユム合金の裏波溶
接法に係るもので特に、中空の形状で裏面からの加工が
困難な個所の片面Ｔ型継手裏波溶接に有効な裏波溶接法
に係るものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a backside welding method of aluminum or an aluminum alloy, and particularly to a single-sided T-shaped joint having a hollow shape and difficult to process from the backside. The present invention relates to a backside welding method effective for backside welding.
（従来の技術） アルミニユム又はアルミニユム合金の突合せ溶接又はＴ
型継手溶接においては、従来片側から溶接を行う片面裏
波溶接は裏当材を用いない場合良好な裏波ビードを形成
させることは非常に困難であり、そのため鋼材の裏波溶
接に見られるような正常な裏波ビードを得ることは不可
能であつた。したがつて、アルミニユム又はアルミニユ
ム合金の裏波溶接では通常耐火物あるいはステンレス鋼
の薄板などを用いた裏当材を開先裏面に取付け、溶融金
属の溶落ちを防止するとともに裏当材に予め施してある
形状と同じに裏波ビードを形成するようにしていた。し
かしながら、中空の形状で裏面の加工が不可能なもので
は、裏当材を取外すことができず、このような裏当方法
は採用できない。(Prior art) Butt welding or T of aluminum or aluminum alloy
In type joint welding, conventional single-sided backside welding, which is performed from one side, is extremely difficult to form a good backside bead without using a backing material. It was impossible to obtain a good normal Uranami bead. Therefore, in back-wave welding of aluminum or aluminum alloy, a backing material that is usually made of a refractory material or a thin plate of stainless steel is attached to the groove back surface to prevent molten metal burn-through and to be applied to the backing material beforehand. The backside bead was formed in the same shape as that shown. However, in the case of a hollow shape whose back surface cannot be processed, the backing material cannot be removed, and such a backing method cannot be adopted.
したがつてこのような場合、裏当材を被溶接物と同じ材
料で製作し、溶接の際被溶接物と裏当材を同時に溶接し
裏当材を取外さず、固定したまま使用する方法が用いら
れている。Therefore, in such a case, the backing material is made of the same material as the work piece, and at the time of welding, the work piece and the backing material are welded at the same time and the backing material is not removed Is used.
Ｔ型継手については従来第３図に示す裏当法が用いられ
ている。このアルミニユム又はアルミニユム合金のＴ型
継手裏波溶接について第３図で説明する。For the T-type joint, the backing method shown in FIG. 3 has been conventionally used. The T-type joint backside welding of this aluminum or aluminum alloy will be described with reference to FIG.
第３図においてａ，ｂは被溶接物であり、被溶接物ｂは
被溶接物ａよりも板厚が大きいものとする。In FIG. 3, a and b are objects to be welded, and the object to be welded b has a larger plate thickness than the object to be welded a.
ｃは断面が角形の被溶接物ａ，ｂと同材の裏当材であ
る。ｄは片面より溶接を行つた溶接金属であり、被溶接
物ａ，ｂおよび裏当材ｃを溶融している。c is a backing material that is the same material as the objects to be welded a and b having a rectangular cross section. Reference numeral d is a weld metal which is welded from one side, and melts the objects to be welded a and b and the backing material c.
ｅは被溶接物ａと裏当材ｃおよび溶接金属ｄとの接点、
ｆは被溶接物ｂと裏当材ｃおよび溶接金属ｄとの接点で
ある。e is a contact point between the workpiece a, the backing material c and the weld metal d,
f is a contact point between the object to be welded b, the backing material c and the weld metal d.
このように、第３図に示した裏当溶接法で行つたＴ型継
手を矢印の方向へ荷重を加えた場合、第３図の接点ｅ，
ｆの部分に応力集中が起り、この点ｅ，ｆから破断が開
始する。さらに静的荷重でなく繰返し荷重の場合の疲労
強度は裏当材を用いないで裏側からも溶接を行つたもの
に比べ著しく低下する。Thus, when a load is applied in the direction of the arrow to the T-shaped joint made by the backing welding method shown in FIG. 3, the contact points e,
Stress concentration occurs at the portion f, and the fracture starts at these points e and f. Furthermore, the fatigue strength under cyclic loading rather than static loading is significantly lower than that when welding is performed from the back side without using the backing material.
（発明が解決しようとする問題点） 本発明は被溶接物と同材の裏当材を用いてアルミニユム
又はアルミニユム合金による片側から行なう裏面からの
加工が困難な個所のＴ型継手裏波溶接において、上述し
た従来法にみられる強度低下を生じない溶接法を提供す
るものである。(Problems to be Solved by the Invention) The present invention is applicable to T-type joint backside welding at a location where it is difficult to machine from one side using aluminum or aluminum alloy using a backing material of the same material as the object to be welded. The present invention provides a welding method that does not cause the reduction in strength found in the above-mentioned conventional methods.
（問題点を解決するための手段） 本発明は片側から行なうＴ型継手の裏当材に被溶接物と
裏当材とが接しないように裏当材にあらかじめ凹部を設
け被溶接物との間に間隙を有するようにして、被溶接
物、裏当材および溶接金属の接点に生ずる微少われなど
の溶接欠陥および応力集中係数を低減するものである。(Means for Solving the Problems) In the present invention, the backing material of the T-shaped joint, which is formed from one side, is provided with a recess in advance so that the backing material does not come into contact with the backing material. By providing a gap between them, a welding defect such as a minute defect occurring at a contact point between the object to be welded, the backing material and the weld metal and a stress concentration factor are reduced.
すなわち、本発明は被溶接物と同材の裏当材を用いてア
ルミニユム又はアルミニユム合金の片側よりする裏面か
らの加工が困難な個所のＴ型継手溶接において、溶接開
先の裏側に配置する裏当材を、被溶接物と該裏当材との
間に間隙を有するように配設して溶接することを特徴と
するＴ型継手裏波溶接法である。That is, the present invention uses a backing material of the same material as the object to be welded, and in a T-joint welding at a location where it is difficult to process from the back surface from one side of the aluminum or aluminum alloy, the back surface to be placed behind the welding groove The T-type joint backside welding method is characterized in that the welding is performed by disposing the material so as to have a gap between the object to be welded and the backing material.
次に、第１図により本発明に係る溶接法の実施態様につ
いて説明する。Next, an embodiment of the welding method according to the present invention will be described with reference to FIG.
被溶接物１，２で構成されるＴ型継手において、３は裏
当材であり間隙部４，５を有しており、被溶接部２に仮
付溶接６によつて取付けられている。In the T-shaped joint composed of the objects to be welded 1, 3 is a backing material and has gaps 4 and 5, and is attached to the portion to be welded 2 by tack welding 6.
今第１図のように構成されたＴ型継手に片側より溶接を
行つたものを第２図に示す。FIG. 2 shows a T-joint constructed as shown in FIG. 1 and welded from one side.
第２図において、７は溶接により生じた溶接金属であ
り、裏当材３と被溶接物１，２との間に設けられた間隙
部４，５を介して裏当材３を溶融している。In FIG. 2, reference numeral 7 denotes a weld metal produced by welding, which melts the backing material 3 through gaps 4 and 5 provided between the backing material 3 and the objects 1 and 2 to be welded. There is.
したがつて、被溶接物１と溶接金属７との接点８および
被溶接物２と溶接金属７との接点９に切欠部が生じない
ため、溶接による微少割れは発生しない。また繰返し荷
重が加わる個所に使用しても疲労強度の低下がないため
設計上きわめて有利である。Therefore, since the contact points 8 between the object to be welded 1 and the weld metal 7 and the contact points 9 between the object to be welded 2 and the weld metal 7 are not cut out, microcracking due to welding does not occur. Also, even if it is used in a place where repeated loads are applied, fatigue strength does not decrease, which is extremely advantageous in design.
以上のように、本発明によればアルミニユム又はアルミ
ニユム合金による片側よりするＴ型継手の溶接品質の向
上が計れる。As described above, according to the present invention, it is possible to improve the welding quality of a T-joint made of aluminum or an aluminum alloy from one side.
実施例 被溶接材…アルミニユム合金５０８３ 裏当材…アルミニユム合金５０８３ 溶接材料…アルミニユム合金線材５１８３ 溶接方法…手動TiG溶接法 溶接開先…第１ 溶接条件…第１表参照 この結果を、従来法（第３図参照）により第１表と同一
溶接条件で溶接した結果とを併せて第２表に示す。Example Material to be welded ... Aluminum alloy 5083 Backing material ... Aluminum alloy 5083 Welding material ... Aluminum alloy wire 5183 Welding method ... Manual TiG welding method Weld groove ... 1 Welding condition ... See Table 1 The results are shown in Table 2 together with the results of welding under the same welding conditions as in Table 1 by the conventional method (see FIG. 3).
上記第２表から分るように、本発明方法によつて得られ
た継手部は、引張強さが従来法で得られたものより高い
だけでなく、海水雰囲気中の疲労強さが従来法で得られ
たものより約２倍高く、溶接法として優れたものである
ことが立証された。 As can be seen from Table 2 above, not only the tensile strength of the joint portion obtained by the method of the present invention is higher than that obtained by the conventional method, but the fatigue strength in seawater atmosphere is also higher than that of the conventional method. It was proved to be an excellent welding method, which is about twice as high as that obtained in the above.
なお第２表の海水雰囲気中の疲労強さ試験は、５トン引
張疲れ試験機を使用し、６分間の海水の吹付けと３分間
の空気乾燥の繰返しで行つた。The fatigue strength test in the seawater atmosphere shown in Table 2 was carried out by repeating the spraying of seawater for 6 minutes and the air drying for 3 minutes using a 5-ton tensile fatigue tester.
第１図及び第２図は本発明の実施例の説明図、第３図は
従来技術の説明図である。1 and 2 are explanatory views of an embodiment of the present invention, and FIG. 3 is an explanatory view of a conventional technique.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松尾 信太郎 長崎県長崎市飽の浦町１番１号 三菱重工 業株式会社長崎研究所内 (56)参考文献 実開 昭58−47392（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shintaro Matsuo 1-1 1-1 Atsunoura-machi, Nagasaki-shi, Nagasaki Mitsubishi Heavy Industries, Ltd. Nagasaki Research Institute (56) References: 58-47392
Claims (1)
ユムまたはアルミニユム合金の片側よりする裏面からの
加工が困難な個所のＴ型継手溶接において、溶接開先の
裏側に配置する裏当材を、被溶接物と該裏当材との間に
間隙を有するように配接して溶接することを特徴とする
Ｔ型継手裏波溶接法。1. A T-joint weld at a place where it is difficult to process from the back side of one side of aluminum or an aluminum alloy by using a backing material of the same material as the object to be welded, a back placed on the back side of the welding groove. A T-type joint backside welding method, characterized in that the material is arranged and welded so as to have a gap between the object to be welded and the backing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60059596A JPH066230B2 (en) | 1985-03-26 | 1985-03-26 | T-type joint Uranami welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60059596A JPH066230B2 (en) | 1985-03-26 | 1985-03-26 | T-type joint Uranami welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61219485A JPS61219485A (en) | 1986-09-29 |
| JPH066230B2 true JPH066230B2 (en) | 1994-01-26 |
Family
ID=13117778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60059596A Expired - Lifetime JPH066230B2 (en) | 1985-03-26 | 1985-03-26 | T-type joint Uranami welding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066230B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139229B (en) * | 2013-05-09 | 2016-08-24 | 中车大同电力机车有限公司 | Form the welding method of T junction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5847392U (en) * | 1981-09-21 | 1983-03-30 | 株式会社長谷工コーポレーション | Backing material |
-
1985
- 1985-03-26 JP JP60059596A patent/JPH066230B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61219485A (en) | 1986-09-29 |
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