JPH0694076B2 - Welding method of aluminum alloy clad material - Google Patents
Welding method of aluminum alloy clad materialInfo
- Publication number
- JPH0694076B2 JPH0694076B2 JP4667090A JP4667090A JPH0694076B2 JP H0694076 B2 JPH0694076 B2 JP H0694076B2 JP 4667090 A JP4667090 A JP 4667090A JP 4667090 A JP4667090 A JP 4667090A JP H0694076 B2 JPH0694076 B2 JP H0694076B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- skin material
- core material
- welded
- skin
- 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
- 239000000463 material Substances 0.000 title claims description 72
- 238000003466 welding Methods 0.000 title claims description 48
- 238000000034 method Methods 0.000 title claims description 28
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 12
- 239000011162 core material Substances 0.000 claims description 33
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 8
- 229910052721 tungsten Inorganic materials 0.000 description 8
- 239000010937 tungsten Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910018134 Al-Mg Inorganic materials 0.000 description 3
- 229910018467 Al—Mg Inorganic materials 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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、アルミニウム合金クラッド材を突き合わせて
溶接する方法に関するものである。TECHNICAL FIELD The present invention relates to a method for butt-welding aluminum alloy clad materials.
（従来の技術） アルミニウムは酸に対する耐蝕性、特に耐硝酸性に優れ
ているため、硝酸タンクの材料によく用いられている。
しかしアルミニウムは機械的強度が弱いため、強度を必
要とする場合、例えば大型タンクを構成する場合には単
独で用いるのに適さない。そこでそのような場合には、
機械的強度の強いアルミニウムを含む合金、例えばAl−
Mg系合金と、アルミニウムとをクラッドした材料、即ち
「アルミニウム合金クラッド材」が用いられるようにな
ってきた。この材料は、アルミニウムを含む合金からな
る芯材とアルミニウムからなる皮材とが貼り合わされて
なるものである。(Prior Art) Aluminum is often used as a material for a nitric acid tank because it has excellent corrosion resistance against acids, particularly nitric acid resistance.
However, since aluminum has low mechanical strength, it is not suitable for use alone when strength is required, for example, when configuring a large tank. So in such cases,
Alloys containing aluminum with high mechanical strength, such as Al-
A material obtained by clad Mg-based alloy and aluminum, that is, "aluminum alloy clad material" has come to be used. This material is obtained by laminating a core material made of an alloy containing aluminum and a skin material made of aluminum.
ところで上述のアルミニウム合金クラッド材を用いて、
例えばタンクの鏡板を構成するには、一般にアルミニウ
ム合金クラッド材からなる複数枚の板を突き合わせ、そ
の突き合わせ部を溶接して構成する。そしてその溶接法
として従来はMIG溶接法が用いられていた。第４図、第
５図はMIG溶接法による溶接の工程を示す図である。図
において、１はアルミニウムからなる皮材、２はAl−Mg
系合金からなる芯材であり、皮材１の突き合わせ部には
皮材１の厚さの半分以上の深さを有する開先1aが、また
芯材２には芯材２の厚みと同じ深さの開先2aが形成され
ている。そしてこのMIG溶接法では、例えばCuからなる
裏当材３を用いて、第５図に示すように皮材１側からａ
部分を溶接し、次いで芯材２側からｂ、ｃ、…ｆ部分と
順次溶接していた。By the way, using the above aluminum alloy clad material,
For example, in order to construct the end plate of the tank, generally, a plurality of plates made of an aluminum alloy clad material are butted and the butted parts are welded. The MIG welding method has been conventionally used as the welding method. FIG. 4 and FIG. 5 are views showing the welding process by the MIG welding method. In the figure, 1 is a skin material made of aluminum, 2 is Al-Mg
A core material made of a system alloy, a groove 1a having a depth equal to or greater than half the thickness of the skin material 1 is provided at the abutting portion of the skin material 1, and a depth equal to the thickness of the core material 2 is provided at the core material 2. A groove 2a is formed. In this MIG welding method, a backing material 3 made of, for example, Cu is used, and as shown in FIG.
The parts were welded, and then the b, c, ... F parts were sequentially welded from the core material 2 side.
（発明が解決しようとする問題点） しかしながら上述のMIG溶接法では、厚さ方向に対して
不均一な幅を有する溶け込み形状となるために溶接変形
が生じ易く、また気孔等の溶接欠陥も生じ易い。しかも
裏当材３を用いる必要があるので、手間がかかり、裏当
材３が水分を含んでいるような場合にはガスが発生し、
これによっても溶接欠陥が生じるという問題があった。(Problems to be solved by the invention) However, in the above-mentioned MIG welding method, since the welded shape has a non-uniform width in the thickness direction, welding deformation easily occurs, and welding defects such as pores also occur. easy. Moreover, since it is necessary to use the backing material 3, it takes time and labor, and when the backing material 3 contains water, gas is generated,
This also causes a problem that welding defects occur.
本発明は、アルミニウム合金クラッド材を突き合わせて
溶接する方法であって、溶接変形、溶接欠陥が生じるの
を防止でき、しかも裏当材を不要とできる方法を提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of butt welding aluminum alloy clad materials, which can prevent welding deformation and welding defects from occurring, and can eliminate the need for a backing material.
（問題点を解決するための手段） 本発明は、アルミニウムを含む合金からなる芯材とアル
ミニウムからなる皮材とが貼り合わされてなるアルミニ
ウム合金クラッド材を突き合わせて溶接する方法におい
て、芯材の突き合わせ部に皮材の芯材側の面が所定の幅
で露出する深さの開先を形成し、まず皮材の突き合わせ
部を皮材側からDCSP−TIG溶接法を手動により行なって
溶接し、次いで芯材の突き合わせ部を芯材側からMIG溶
接法により溶接するようにしたものである。(Means for Solving the Problems) The present invention relates to a method of butt-welding an aluminum alloy clad material obtained by laminating a core material made of an alloy containing aluminum and a skin material made of aluminum. Form a groove with a depth at which the surface of the core material side of the skin material is exposed with a predetermined width, and first weld the butted portion of the skin material by manually performing the DCSP-TIG welding method from the skin material side. Next, the abutting portion of the core material is welded from the core material side by the MIG welding method.
芯材としては、例えばA5052、A5083等のAl−Mg系合金が
用いられ、皮材としては、例えばA1050、A1070等の純ア
ルミニウムが用いられる。As the core material, an Al-Mg alloy such as A5052 or A5083 is used, and as the skin material, pure aluminum such as A1050 or A1070 is used.
芯材の開先は60度の角度の外開き形状に形成するのが好
ましく、開先底部に露出させる皮材の芯材側の面の幅
は、皮材の溶け込み部の底部の幅より広い方が好まし
い。It is preferable that the groove of the core material is formed in an outward opening shape with an angle of 60 degrees, and the width of the surface of the skin material exposed on the groove bottom side on the core material side is wider than the width of the bottom part of the melted part of the skin material. Is preferred.
DCSP−TIG溶接法とは、被溶接物（ここでは皮材）と陽
極とし、トーチに保持されたタングステン電極を陰極と
し、ヘリウム、アルゴン等の不活性ガスの雰囲気中で、
タングステン電極と被溶接物との間にアークを発生さ
せ、その熱で溶加材を溶かして被溶接物を溶接する方法
である。ここでは皮材の突き合わせ部に開先を形成せ
ず、又は形成しても浅い深さのものとし、溶加材を用い
ないで、被溶接物を溶かして溶接する。また被溶接物が
溶け過ぎていないかどうかを目測により表面側の溶け込
み部の幅に基づいて判断しながらDCSP−TIG溶接法を手
動で行なう。例えば溶け込み部の幅が広くて溶け過ぎて
いると判断した場合には、タングステン電極を手動によ
り皮材に近づける。The DCSP-TIG welding method is used as an object to be welded (skin material in this case) and an anode, a tungsten electrode held by a torch as a cathode, in an atmosphere of an inert gas such as helium or argon,
In this method, an arc is generated between the tungsten electrode and the object to be welded, and the heat is used to melt the filler material to weld the object to be welded. Here, the groove is not formed at the abutting portion of the skin material or has a shallow depth even if it is formed, and the welded material is melted and welded without using a filler material. In addition, the DCSP-TIG welding method is manually performed while visually observing whether or not the object to be welded has melted excessively based on the width of the welded portion on the surface side. For example, when it is determined that the width of the melted portion is wide and the melted portion is too large, the tungsten electrode is manually brought close to the skin material.
（作用） 芯材の開先底部には皮材の芯材側の面が露出ししている
ので、皮材を溶接する際に芯材が皮材に流れ込んで皮材
と混合することは殆んどない。従って皮材の有する耐蝕
性、特に耐硝酸性が劣化することはない。(Function) Since the surface of the core material on the core material side is exposed at the groove bottom of the core material, when welding the skin material, the core material hardly flows into the skin material and mixes with the skin material. Not really. Therefore, the corrosion resistance of the skin material, particularly nitric acid resistance, does not deteriorate.
またDCSP−TIG溶接法による皮材の溶接を手動で行なう
ので、皮材の溶け具合に対応したタングステン電極と皮
材との間隔の調整は、容易且つ迅速に行ない得ることと
なる。従って皮材の溶け過ぎが生じることはなく、この
ため溶接欠陥が生じることはなく、また裏当材が不要と
なる。なおDCSP−TIG溶接法を自動で行なった場合に
は、手動の場合のような迅速な調整は行ない得ないの
で、裏当材を必要とする。Further, since the skin material is manually welded by the DCSP-TIG welding method, the gap between the tungsten electrode and the skin material can be easily and quickly adjusted according to the melting degree of the skin material. Therefore, the over-melting of the skin material does not occur, so that welding defects do not occur and the backing material becomes unnecessary. In addition, when the DCSP-TIG welding method is performed automatically, the backing material is necessary because the quick adjustment unlike the case of manual operation cannot be performed.
（実施例） 第１図に示すアルミニウム合金クラッド材の突き合わせ
部を溶接した。第１図において、皮材１はA1050又はA10
70のアルミニウムからなり、芯材２はA5052又はA5083の
Al−Mg系合金からなっており、皮材１は厚さ5mm、芯材
２は厚さ20mmである。皮材１と芯材２は熱圧着により貼
り合わされている。皮材１には開先1bが90度の角度で外
開きに形成されており、その深さは2mmである。芯材２
には開先2bが60度の角度で外開きに形成されており、開
先2bの底部には皮材１の芯材２側の面2cが露出してい
る。その露出部の幅ｗは3mmである。(Example) The abutting portion of the aluminum alloy clad material shown in FIG. 1 was welded. In FIG. 1, the skin material 1 is A1050 or A10.
Made of 70 aluminum, the core material 2 is made of A5052 or A5083
It is made of Al-Mg alloy, the skin 1 has a thickness of 5 mm, and the core 2 has a thickness of 20 mm. The skin material 1 and the core material 2 are bonded by thermocompression bonding. A groove 1b is formed on the skin material 1 so as to open outward at an angle of 90 degrees, and the depth thereof is 2 mm. Core material 2
The groove 2b is formed so as to open outward at an angle of 60 degrees, and the surface 2c of the skin material 1 on the side of the core material 2 is exposed at the bottom of the groove 2b. The width w of the exposed portion is 3 mm.
まず皮材１の突突き合わせ部（溶接部）の前処理を行な
った。即ち、有機溶剤で開先1bの脱脂処理を行なった
後、カッター等により開先1bの面の表面酸化被膜を除去
し、次いで更に開先1bの脱脂処理を行なった。なお溶接
前に仮付を行なってもよい。First, the butt-butting portion (welded portion) of the skin material 1 was pretreated. That is, after the groove 1b was degreased with an organic solvent, the surface oxide film on the surface of the groove 1b was removed with a cutter or the like, and then the groove 1b was further degreased. Note that temporary attachment may be performed before welding.
そして皮材１を上にして皮材１の突き合わせ部を第２図
に示すような装置を用いてDCSP−TIG溶接法により溶接
した。第２図において、11はトーチ、12はトーチ11に保
持されたタングステン電極、13はヘリウム、アルゴン等
の不活性ガスである。DCSP−TIG溶接法については前述
した通りであり、手動によりトーチ11を移動させながら
行なった。タングステン電極12と皮材１との間隔は、突
き合わせ部が溶け過ぎていないかどうかを目測により表
面側の溶け込み部の幅に基づいて判断しながら迅速に調
整した。この溶接は、第３図のａ部分、次いでｂ部分と
いうように２回行なった。この時の溶接条件は、概ね次
の範囲とした。Then, with the skin material 1 facing upward, the abutting portion of the skin material 1 was welded by the DCSP-TIG welding method using an apparatus as shown in FIG. In FIG. 2, 11 is a torch, 12 is a tungsten electrode held by the torch 11, and 13 is an inert gas such as helium or argon. The DCSP-TIG welding method is as described above, and was carried out while manually moving the torch 11. The distance between the tungsten electrode 12 and the skin material 1 was quickly adjusted by visually observing whether or not the butted portion was excessively melted based on the width of the welded portion on the front surface side. This welding was performed twice, that is, the portion a in FIG. 3 and then the portion b. The welding conditions at this time were approximately in the following ranges.
電 流 250〜360A 電 圧 26 〜34V 電極移動速度 250〜550mm/分 ガス流量 15〜20／分 次に芯材２を上にして芯材２の突き合わせ部を通常のMI
G溶接法により溶接した。この溶接は第３図に示すよう
に、ｃ、ｄ……ｉ部分というように７回行なった。Current 250 to 360A Voltage 26 to 34V Electrode moving speed 250 to 550mm / min Gas flow rate 15 to 20 / min Next, with the core material 2 facing up, the butted part of the core material 2 should be a normal MI.
Welded by the G welding method. As shown in FIG. 3, this welding was performed 7 times such as c, d ... i.
こうして溶接された部分には、溶接変形、溶接欠陥は生
じていなかった。No welding deformation or welding defects occurred in the welded portion.
（発明の効果） 以上のように本発明によれば； （１）芯材２の開先2b底部に皮材１の芯材２側の面2cを
所定の幅だけ露出させたので、皮材１を溶接する際に、
芯材２が皮材１に流れ込むことによって芯材２と皮材１
とが混合するのを防止できる。従って皮材１の溶接によ
る耐蝕性の劣化を防止できる。(Effects of the Invention) According to the present invention as described above; (1) Since the surface 2c of the skin material 1 on the core material 2 side is exposed to the bottom of the groove 2b of the core material 2 by a predetermined width, the skin material When welding 1
When the core material 2 flows into the skin material 1, the core material 2 and the skin material 1
It is possible to prevent and from mixing. Therefore, deterioration of corrosion resistance due to welding of the skin material 1 can be prevented.
（２）DCSP−TIG溶接法による皮材１の溶接を手動で行
なうようにしたので、皮材１が溶け過ぎている場合には
タングステン電極12を皮材１に容易且つ迅速に近づける
ことができる。従って皮材１の溶け過ぎによる溶接欠陥
の発生を防止でき、また裏当材を不要にして溶接作業を
簡素化できる。またDCSP−TIG溶接法では、厚さ方向に
対して均一な幅を有する溶け込み形状が得られるので、
溶接変形が生じるのも防止できる。(2) Since the skin material 1 is manually welded by the DCSP-TIG welding method, the tungsten electrode 12 can be brought close to the skin material 1 easily and quickly when the skin material 1 is excessively melted. . Therefore, the occurrence of welding defects due to the excessive melting of the skin material 1 can be prevented, and the welding work can be simplified by eliminating the need for a backing material. Also, in the DCSP-TIG welding method, since a welded shape having a uniform width in the thickness direction can be obtained,
It is also possible to prevent welding deformation.
第１図は本発明の方法により溶接するアルミニウム合金
クラッド材の突き合わせ部を示す断面図、第２図は第１
図のクラッド材をDCSP−TIG溶接する際の模式部分断面
図、第３図は第１図のクラッド材をDCSP−TIG溶接する
際の工程を示す断面図、第４図はMIG溶接法により溶接
するアルミニウム合金クラッド材の突き合わせ部を示す
断面図、第５図は第４図に示すクラッド材をMIG溶接す
る際の工程を示す断面図である。 １……皮材、1a、1b……開先、２……芯材、2a、2b……
開先、３……裏当材、12……タングステン電極FIG. 1 is a sectional view showing a butt portion of an aluminum alloy clad material to be welded by the method of the present invention, and FIG.
Fig. 3 is a schematic partial sectional view of the clad material shown in Fig. 1 when performing DCSP-TIG welding. Fig. 3 is a sectional view showing the steps of DCSP-TIG welding of the shown clad material. Fig. 4 shows welding using the MIG welding method. FIG. 5 is a cross-sectional view showing a butt portion of the aluminum alloy clad material, and FIG. 5 is a cross-sectional view showing a step of MIG welding the clad material shown in FIG. 1 ... Leather material, 1a, 1b ... Groove, 2 ... Core material, 2a, 2b ....
Groove 3 …… Backing material, 12 …… Tungsten electrode
Claims (1)
ルミニウムからなる皮材とが貼り合わされてなるアルミ
ニウム合金クラッド材を突き合わせて溶接する方法にお
いて、芯材の突き合わせ部に皮材の芯材側の面が所定の
幅で露出する深さの開先を形成し、まず皮材の突き合わ
せ部を皮材側からDCSP−TIG溶接法を手動により行なっ
て溶接し、次いで芯材の突き合わせ部を芯材側からMIG
溶接法により溶接したことを特徴とするアルミニウム合
金クラッド材の溶接方法。1. A method of butt-welding an aluminum alloy clad material obtained by laminating a core material made of an alloy containing aluminum and a skin material made of aluminum, wherein a butt portion of the core material is provided on the core material side of the skin material. Form a groove with a depth where the surface is exposed with a predetermined width, first weld the butt portion of the skin material manually from the skin side by the DCSP-TIG welding method, and then weld the butt portion of the core material to the core material. MIG from the side
A method for welding an aluminum alloy clad material, characterized by being welded by a welding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4667090A JPH0694076B2 (en) | 1990-02-26 | 1990-02-26 | Welding method of aluminum alloy clad material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4667090A JPH0694076B2 (en) | 1990-02-26 | 1990-02-26 | Welding method of aluminum alloy clad material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03248776A JPH03248776A (en) | 1991-11-06 |
| JPH0694076B2 true JPH0694076B2 (en) | 1994-11-24 |
Family
ID=12753796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4667090A Expired - Lifetime JPH0694076B2 (en) | 1990-02-26 | 1990-02-26 | Welding method of aluminum alloy clad material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0694076B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878471A (en) * | 2014-03-06 | 2014-06-25 | 西安轨道交通装备有限责任公司 | Method for welding tank body of concentrated nitric acid tank truck |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014946B (en) * | 2014-05-16 | 2016-10-12 | 南京中车浦镇城轨车辆有限责任公司 | The bevel for welding structure of Z-type aluminium alloy extrusions butt weld and welding method thereof |
| CN107283033A (en) * | 2017-07-29 | 2017-10-24 | 江苏恒高电气制造有限公司 | MIG the and TIG assembled welding process of girth welding is docked for aluminium |
-
1990
- 1990-02-26 JP JP4667090A patent/JPH0694076B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103878471A (en) * | 2014-03-06 | 2014-06-25 | 西安轨道交通装备有限责任公司 | Method for welding tank body of concentrated nitric acid tank truck |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03248776A (en) | 1991-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1997579A1 (en) | Flux-cored wire for different-material bonding and method of bonding different materials | |
| JP2004223548A (en) | Method of joining aluminum and steel | |
| JP6263296B2 (en) | Wire for welding dissimilar materials and manufacturing method thereof | |
| JP2011036918A (en) | Method for joining different materials and filler metal therefor | |
| JP2003211270A (en) | Method of joining aluminum and steel | |
| JP3992592B2 (en) | Method for producing welded joint made of dissimilar metals | |
| JP7048355B2 (en) | Dissimilar material joining joint and dissimilar material joining method | |
| JP2001259888A (en) | Flux cored wire for welding galvanized steel sheet having excellent pit resistance and blowhole resistance | |
| FR2839463A1 (en) | LASER-ARC HYBRID WELDING PROCESS IN MULTI-THICKNESS WITH CHAIN ATTACK | |
| JPH0694076B2 (en) | Welding method of aluminum alloy clad material | |
| JPH06114587A (en) | Butt welding method for thick plates | |
| JP4614223B2 (en) | Dissimilar material joining material and dissimilar material joining method | |
| JP2006224147A (en) | Method for joining different materials and filler metal therefor | |
| US20200164472A1 (en) | Wire for welding different types of materials and method of manufacturing the same | |
| JP2006088174A (en) | Dissimilar material joining method | |
| JP2004351507A (en) | Spot welding joining method and joining joint between iron-based material and aluminum-based material | |
| US7371994B2 (en) | Buried arc welding of integrally backed square butt joints | |
| EP3528991B1 (en) | Enhanced resistance spot welding using cladded aluminum alloys | |
| JP4128022B2 (en) | Groove butt welding method using insert member and insert member used therefor | |
| JP2833279B2 (en) | Steel pipe welding method | |
| JP2018023994A (en) | Manufacturing method of dissimilar metal joining body | |
| JPH0615110B2 (en) | One-sided welding method | |
| JPH06285631A (en) | Hard buildup welding method for al alloy | |
| JP3102821B2 (en) | Single-sided gas shielded arc welding method for in-plane tack joints | |
| JP2954551B2 (en) | Shielding gas for arc welding of aluminum alloy |