JPS61209774A - Tig welding method - Google Patents
Tig welding methodInfo
- Publication number
- JPS61209774A JPS61209774A JP5060385A JP5060385A JPS61209774A JP S61209774 A JPS61209774 A JP S61209774A JP 5060385 A JP5060385 A JP 5060385A JP 5060385 A JP5060385 A JP 5060385A JP S61209774 A JPS61209774 A JP S61209774A
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- JP
- Japan
- Prior art keywords
- filler
- molten pool
- metal
- molten
- arc
- Prior art date
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Abstract
Description
【発明の詳細な説明】
イ、産業上の利用分野
本発明は広範囲な組成の溶接金属を容易に得ることので
きるティグ溶接方法に関する・口、従来の技術
従来のティグ溶接方法は、1本のタングステン電極から
発するアークの中K111方から1本の溶加材を送給し
、これをアーク熱で溶融しながら溶接ビードを形成する
。この場合、タングステン電極と溶融池の酸化を防止す
る丸め、アルfン、ヘリウムなどといりた高温度におい
ても分解しない中性のイナートガスをシールドガスとし
ている。この丸め、溶加材そのものの化学成分とタング
ステン電極のアークによって溶融され形成された溶接金
属の化学成分は、母材の希釈を考慮しなければ、はぼ一
致する。従ってティグ溶接方法では溶接金属の化学成分
は概ね溶加材の化学成分と見なすことができる。したが
って所定の化学成分の溶接金属を得るためには、その成
分とほぼ同等の溶加材を調達する必要があった。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a TIG welding method that can easily obtain weld metals with a wide range of compositions. A piece of filler material is fed from the K111 side of the arc emitted from the tungsten electrode, and is melted by the arc heat to form a weld bead. In this case, a neutral inert gas that does not decompose even at high temperatures, such as rounding, aluminum, helium, etc., is used as the shielding gas to prevent oxidation of the tungsten electrode and the molten pool. The chemical composition of this rounded filler metal itself and the chemical composition of the weld metal melted and formed by the arc of the tungsten electrode are almost identical, unless dilution of the base metal is taken into account. Therefore, in the TIG welding method, the chemical composition of the weld metal can generally be considered to be the chemical composition of the filler metal. Therefore, in order to obtain a weld metal with a predetermined chemical composition, it was necessary to procure a filler metal with approximately the same composition.
しかしながら、所定の溶接金属の化学成分に応じてその
溶加材を調達することは大変なことであり、経済的にも
負担が大きい、それにも拘わらす溶加材についてはこれ
といった改善がなさ托ていないのが現状である。However, it is difficult and economically burdensome to procure filler metal according to the chemical composition of a given weld metal, and despite this, there has been no significant improvement in filler metal. The current situation is that this is not the case.
これに対しミグ溶接方法などでは、シールドガスとして
アルがンに酸素あるいは炭酸ガスを予め混合したものを
使用し、酸素あるいは炭酸ガスの混合量を変えることに
よってシールドガス全体の酸素ポテンシャルを調整でき
るので、ワイヤにTl。On the other hand, in the MIG welding method, a mixture of argon and oxygen or carbon dioxide is used as the shielding gas, and by changing the amount of oxygen or carbon dioxide mixed, the oxygen potential of the entire shielding gas can be adjusted. , Tl on the wire.
ZrJi*N!nなどの酸化性元素を含む場合には、シ
ールドガスの酸素ポテンシャルを調整し溶接金属中の酸
化性元素の量をコントロールすることがモきる。ZrJi*N! When the weld metal contains an oxidizing element such as n, it is possible to control the amount of the oxidizing element in the weld metal by adjusting the oxygen potential of the shielding gas.
ティグ溶接方法でも、かかるシールドガスを使用すれば
ミグ溶接方法同様に溶接金属中の酸化性元素の量をコン
トロールできるが、ティグ溶接ではタングステン電極の
酸化消耗を招き使用できない。In the TIG welding method, if such a shielding gas is used, the amount of oxidizing elements in the weld metal can be controlled in the same manner as in the MIG welding method, but in TIG welding, the tungsten electrode becomes oxidized and consumed, making it unusable.
酸化消耗した電極のタングステンは溶接金属に移行し、
溶接金属の化学成分は意図しないものになシ、また電極
が消耗するので一定したアークの継続ができなくなシ溶
接不能になる。The oxidized and consumed tungsten of the electrode transfers to the weld metal,
The chemical components of the weld metal may be unintentional, and the electrodes may become worn out, making it impossible to maintain a constant arc and making welding impossible.
ノ1発明が解決しようとする問題点
本発明は化学成分の異なる溶加材を少なくとも2種類使
用することによって、2種類の溶加材溶融量をそれぞれ
変化させて使用溶加材の中間の化学成分をもつ溶接金属
を幾種類も得ることを目的としている。No. 1 Problems to be Solved by the Invention The present invention uses at least two types of filler metals with different chemical compositions, and changes the melting amount of the two types of filler metals to achieve a chemical intermediate between the filler metals used. The aim is to obtain various types of weld metals with different compositions.
貴問題点を解決するための手段
本発明の要旨は、ティグ溶接方法において化学成分の異
なる2本の溶加材を1個の溶融池で同時に溶融すること
を特徴とするティグ溶接方法にある。Means for Solving the Problems The gist of the present invention resides in a TIG welding method characterized in that two filler metals having different chemical compositions are simultaneously melted in one molten pool.
以下、本発明の詳細な説明する。第1図および第2図は
本発明による方法の1実施態様を示す斜視図である。第
1図において電源IK接続されたタングステン電極6と
母材2の間にアーク3を発生させ、溶融池4を大気から
遮断して形成するためにがス5で包囲するように従来の
ティグ溶接と同じように設定する。そして、化学成分の
異なる2本の溶加材7,8をタングステン電極進行方向
9の前方に配置し、との溶加材を同時に10,11の方
向にアーク3と溶融池4の向きに送給し、アーク3の熱
で溶加材7.8を同時に溶融し溶融池4を形成し、凝固
した時溶接金属12となる。The present invention will be explained in detail below. 1 and 2 are perspective views showing one embodiment of the method according to the invention. In Fig. 1, an arc 3 is generated between a tungsten electrode 6 connected to a power supply IK and a base metal 2, and a molten pool 4 is surrounded by a gas 5 to form a molten pool 4 isolated from the atmosphere. Set in the same way. Then, two filler metals 7 and 8 having different chemical compositions are placed in front of the tungsten electrode traveling direction 9, and the filler metals 7 and 8 are simultaneously fed in the directions 10 and 11 toward the arc 3 and the molten pool 4. The filler metal 7.8 is simultaneously melted by the heat of the arc 3 to form a molten pool 4, which becomes a weld metal 12 when solidified.
第2図は溶加材7.8をタングステン電極の両側から第
1図の場合と同様に送給し、溶接金属12を形成する状
況を示したもので、その他の構成は第1図と同様である
。Figure 2 shows a situation in which filler metal 7.8 is fed from both sides of the tungsten electrode in the same manner as in Figure 1 to form weld metal 12, and the other configuration is the same as in Figure 1. It is.
この2本の溶加材はアーク3で溶融され、溶融池4を形
成するが、溶融池4はアーク3のアーク力と熱によって
対流が生じ十分攪拌するので、溶融池4は2本の溶加材
の成分を混合したものとなる。そして、この混合した溶
接金属の成分は必要に応じて調整することができる。つ
まシ溶加材7゜8のそれぞれの化学成分と送給速度を変
えるととKよって溶融量を加減できるので、溶融池の組
成は溶加材7,8の送給速度の調整によって効率的に変
えることができる。These two filler metals are melted by the arc 3 and form a molten pool 4, but the molten pool 4 is sufficiently stirred by convection caused by the arc force and heat of the arc 3, so the molten pool 4 is formed by the two molten metals. It is a mixture of filler ingredients. The components of this mixed weld metal can be adjusted as necessary. By changing the chemical composition and feeding speed of each of the filler metals 7 and 8, the amount of melt can be adjusted depending on the temperature, so the composition of the molten pool can be made more efficient by adjusting the feeding speed of the filler metals 7 and 8. can be changed to
本発明は上記の如く構成されているので、化学成分を変
えた溶加材2種類を調達することKよりて、281[類
の溶加材の中間的な化学成分をもつ溶接金属を幾種類に
も得ることができる。Since the present invention is constructed as described above, by procuring two types of filler metals with different chemical compositions, several types of weld metals having chemical compositions intermediate to the filler metals of 281[class] can be procured. You can also get it.
なお第1図および第2図では溶加材の本数をそれぞれ2
本用いる場合を示したが、3本以上用いる場合もタング
ステン電極の前方、後方または前方と後方の両側から溶
融池4へ送給するように配置すればよい。In addition, in Figures 1 and 2, the number of filler metals is 2, respectively.
Although the case where this is used is shown, even when three or more electrodes are used, they may be arranged so that they are fed to the molten pool 4 from the front, the rear, or both the front and rear sides of the tungsten electrode.
実施例 以下に実施例で本発明をさらに具体的に説明する。Example The present invention will be explained in more detail below using Examples.
第1表に示す諸元の3.5 %Ni鋼からなる試験板を
第3図でθ=45°、t=12.7■、G=6.4露と
した開先をとシ、第2表に示すC量と81量の違う組成
の直径1.2 mのA溶加材とB溶加材の2本を用いて
第3表に示す溶接条件でティグ溶接した。A test plate made of 3.5% Ni steel with the specifications shown in Table 1 was prepared with a groove with θ = 45°, t = 12.7 mm, and G = 6.4 dew in Figure 3. TIG welding was performed under the welding conditions shown in Table 3 using two filler metals A and B, each having a diameter of 1.2 m and having a different composition of C content shown in Table 2 and 81 content.
溶接条件の試験JllL1はC量と81量の低いA溶加
材だけを溶加材溶融量が111量minとしたもので試
験/!E2は、A溶加材とB溶加材の割合が3対1にな
るようム溶加材を8.25 #r/win e B溶加
材を2、75 JFr/m1n送給し、溶加材溶融量が
トータルで11 gr/m1nとなるようにしたもので
ある。試験A3は、1対10割合になるようそれぞれ5
.5g1n送給し、また試験A4は1対3になるようA
溶加材を2.75 、!Fr/min * B溶加材を
8.25 #r/nin送給し溶加材溶融量を11 g
r/minとなるようにした。Welding condition test JllL1 was tested using only A filler metal with a low C content and 81 content, with a filler metal melt amount of 111 min/! E2 feeds filler metal 8.25 #r/win e filler B at 2.75 JFr/m1n so that the ratio of filler metal A to filler B is 3:1, and The total melting amount of the filler material was 11 gr/m1n. Test A3 is 5 each so that the ratio is 1:10.
.. 5g1n was fed, and test A4 was A4 so that the ratio was 1:3.
2.75 filler metal,! Fr/min * B filler metal is fed at 8.25 #r/nin, and the amount of melted filler metal is 11 g.
r/min.
試験屋5はC量とSi量が高いB溶加材だげでティグ溶
接したものである。Tester 5 performed TIG welding using only B filler metal with high C and Si contents.
溶接終了後、試験材の開先中央部溶接金属から分析試料
とJIS、A2号丸棒引張試験片およびJIB。After welding was completed, analysis samples were prepared from the weld metal at the center of the groove of the test material, JIS, A2 round bar tensile test piece, and JIB.
4号シャルピー衝撃試験片を採取し、分析試験と引張試
験およびシャルピー衝撃試験を行なった。A No. 4 Charpy impact test piece was taken and subjected to an analytical test, a tensile test, and a Charpy impact test.
これらの溶接金属の分析試験結果を第4表K。Table 4 K shows the analytical test results of these weld metals.
引張試験結果および衝撃試験結果を第5表に示す。The tensile test results and impact test results are shown in Table 5.
本実施例はCとSt量が異なF) Mn 、 Niはほ
ぼ同量の溶加材を組合せ溶接したので、その溶接金属の
化学成分は第4表で明らかな通り、2本の溶加材の溶融
量に応じた値になっている。す表わちMn、Nlが2本
の溶加材ともほぼ同じであれば、2本の溶加材の溶融量
を変えても溶接金属の化学成分はもとの溶加材の成分と
ほぼ同等で変わりがない。In this example, filler metals with different amounts of C, St, F) Mn, and Ni were combined and welded in almost the same amount, so the chemical composition of the weld metal was as clear from Table 4, as shown in Table 4. The value depends on the amount of melting. In other words, if Mn and Nl are almost the same for the two filler metals, the chemical composition of the weld metal will be almost the same as the original filler metal even if the melting amount of the two filler metals is changed. Equal and unchanged.
一方、CとSt量が2本の溶加材とも異なれば、溶接金
属の化学成分は2本の溶加材の溶融量の比、 にほぼ内
分された値となっている。この実施例では2種類の溶加
材で3種類の溶接金属の成分を系統的に得る場合を示し
たが、必要に応じ増減でき、化学成分に応じた溶接金属
の機械的性質を知ることができる。そして、この逆をた
どれば必要とする機械的性賞金もった溶接金属の化学成
分を探シあてることができ、この化学成分から溶加材及
びその溶融量を決めることもできる。On the other hand, if the C and St amounts of the two filler metals are different, the chemical composition of the weld metal will be a value that is approximately divided into the ratio of the melting amounts of the two filler metals. This example shows the case where three types of weld metal components are systematically obtained using two types of filler metals, but it can be increased or decreased as necessary, and it is possible to know the mechanical properties of weld metal depending on the chemical composition. can. By following this process in reverse, it is possible to find the chemical composition of the weld metal that has the required mechanical properties, and from this chemical composition it is also possible to determine the filler metal and its melting amount.
二6発明の効果
このように従来のティグ溶接方法では溶接金属の化学成
分は溶加材の化学成分そのものであシ、必要な化学成分
の溶接金属を得るためには、それに等しい成分の溶加材
を調達しなければならなかったが、本発明の方法によっ
て溶加材2種類調達することによってそれぞれの溶加材
の送給速度を調整して同時に溶融させる結果、2種類の
溶加材の化学成分の中間の化学成分をもつ溶接金属を効
率よく得ることが可能になった。26 Effects of the Invention As described above, in the conventional TIG welding method, the chemical composition of the weld metal is the same as the chemical composition of the filler metal. However, by procuring two types of filler metals using the method of the present invention, the feeding speed of each filler metal is adjusted and melted at the same time. It has become possible to efficiently obtain weld metal with an intermediate chemical composition.
第1図および第2図は本発明の実施態様を示す斜視図、
第3図は試験板の形状を示す図である。
1・・・電源、2・・・母材、3・・・アーク、4・・
・溶融池、5・・・シールドガス、6・・・タングステ
ン電極、7・・・溶加材、8・・・溶加材、9・・・溶
接進行方向、1o・・・溶加材送給方向、11・・・溶
加材送給方向、12・・・溶接金属、13・・・試験板
、14・・・真当金。1 and 2 are perspective views showing embodiments of the present invention,
FIG. 3 is a diagram showing the shape of the test plate. 1... Power supply, 2... Base material, 3... Arc, 4...
- Molten pool, 5... Shielding gas, 6... Tungsten electrode, 7... Filler metal, 8... Filler metal, 9... Welding direction, 1o... Filler material feeding feeding direction, 11... filler metal feeding direction, 12... weld metal, 13... test plate, 14... true metal.
Claims (1)
材を1個の溶融池で同時に溶融することを特徴とするテ
ィグ溶接方法。A TIG welding method characterized by simultaneously melting two filler metals with different chemical compositions in one molten pool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60050603A JPH0655353B2 (en) | 1985-03-15 | 1985-03-15 | Teg welding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60050603A JPH0655353B2 (en) | 1985-03-15 | 1985-03-15 | Teg welding method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61209774A true JPS61209774A (en) | 1986-09-18 |
JPH0655353B2 JPH0655353B2 (en) | 1994-07-27 |
Family
ID=12863539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60050603A Expired - Lifetime JPH0655353B2 (en) | 1985-03-15 | 1985-03-15 | Teg welding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0655353B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002001538A (en) * | 2000-06-21 | 2002-01-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method and device for welding of multielectrode |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037270A (en) * | 1983-08-11 | 1985-02-26 | Sasakura Eng Co Ltd | Build-up welding method by single electrode-two filler wire system |
-
1985
- 1985-03-15 JP JP60050603A patent/JPH0655353B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6037270A (en) * | 1983-08-11 | 1985-02-26 | Sasakura Eng Co Ltd | Build-up welding method by single electrode-two filler wire system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002001538A (en) * | 2000-06-21 | 2002-01-08 | Ishikawajima Harima Heavy Ind Co Ltd | Method and device for welding of multielectrode |
Also Published As
Publication number | Publication date |
---|---|
JPH0655353B2 (en) | 1994-07-27 |
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